Answer:
Tyrosine kinases are therapeutic targets for anticancer compounds
Explanation:
Tyrosine kinases are a type of enzymes capable of activating signaling network pathways by protein phosphorylation, which is a posttranslational modification where one phosphate group is added to the protein and thereby activating it. In the last years, tyrosine kinases have been used as therapeutic anticancer agents. For example, it has been shown that c-MET proto-oncogene, a receptor tyrosine kinase involved in signaling pathways, is targeted by the PROteolysis TArgeting Chimera (PROTAC). PROTAC is a drug that acts as an enzyme capable of removing unwanted proteins bound to this receptor.
The diagram below shows the stages of succession in a forest ecosystem. A diagram showing 4 stages of succession in a forest ecosystem. Stage A: A mature forest. A fire occurs, resulting in Stage B, a burnt forest where nothing is growing. Stage C, pioneer plant species grow in the bare ground. More species follow and grow bigger. Stage D: A mature forest with several tree species and younger trees. Which area shows the climax community of secondary succession?
Answer:
D
Explanation:
just took the test
Answer:
D
Explanation:
Area D shows the climax of secondary succession.
A higher population density, faster transmission rate, and ot CD longer infectious period each cause a disease like influenza to spread to more people. Which of the following statements correctly explain why? 1. At high densities, infected individuals encountrr more individuals who are also infected. 2. At high transmission rates, an infected-susceptible encounter is more likely to result in an infection. 3. With long recovery, an infected individual is contagious longer and can infect more susceptibles.
Over one million total bases were inserted into M. capricolum. The final result was a bacterial cell that originated from M. capricolum, but behaved like and expressed the proteins of M. mycoides. This synthetic M. mycoides bacterium was also able to self-replicate, a fundamental quality of life. 71 The demonstration that completely synthetic genomes can be used to start synthetic life promises other exciting discoveries and technologies. For example, photosynthetic algae could be transplanted with genomes that would enable these organisms to produce biofuel. In fact, the ExxonMobil Research and Engineering Company has already worked out an agreement with Synthetic Genomics, the company that helped fund the JCVI research team, to start just such a project. Select one: a. True b. Not Given c. False
Answer:
True
Explanation:
The Craig Venter Institute developed the first self-replicating bacterium cell by inserting artificial genetic information (DNA) chemically synthesized in the laboratory. Interestingly, this bacterium contains a few 'watermarks' inserted in the DNA sequence as a signature of its synthetic origin derived from the laboratory data. In line with this, ExxonMobil and Synthetic Genomics Inc. are working together to develop a biotechnological technology based on the exploitation of algae biodiversity for producing biofuel at higher yields in the next years.
what is biodiversity Which of the following shows the correct chronological order (geologically oldest to most recent) of near or total extinctions for the organisms listed?
Answer:
Biodiversity is the diversity of living beings, be they animals or plants, which together make up the totality of life on planet Earth. In other words, the term biodiversity necessarily implies a large number of different species and genres of living beings, which interrelate with each other through food chains, sharing natural habitats or even establishing more complex links. In any case, it requires that heterogeneity that implies the existence of several different living beings from each other in a given space.
What are two types of weak bonds
Answer:
Hydrogen and van der waal
When the body is exposed to dangerously low temperatures, shivering and surface capillary vasoconstriction occur. This is an example of ____.
Answer:
negative feedback
Explanation:
When the temperature of the body falls below the normal level, the shivering and surface capillary vasoconstriction that occurs is an example of a negative feedback mechanism of maintaining homeostasis.
The negative feedback mechanism act to counter the process that causes the deviation away from the normal body temperature, the set point. The sensor/receptor which is the skin, in this case, sends information to the control center (part of the brain), the control switch then activates the process of vasoconstriction and muscle shivering to raise the body temperature in case of abnormally low temperature or vasoconstriction and heavy breathing in case of abnormally high temperature.
The entire process is an example of negative feedback in homeostasis.
The model above is an example of negative feedback.
Negative feedback is a loop that feeds back to the input of the system's output, thereby reversing the change in such output.The negative feedback allows creating an equilibrium (homeostasis) in the system.This type of loop mechanism (negative feedback) is very common in nature.In conclusion, the model above is an example of negative feedback.
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Explain why athletes who excel at short sprints probably have fewer slow oxidative fibers in their leg muscles.
Answer:
Athletes who train short distances and explosive moments of extreme metabolic anaerobiosis have a higher percentage of fast fibers in the muscular structure of skeletal muscles, that is, in the muscles that achieve and carry out locomotion.
Some researchers also argue that men have a predisposition to have more fast fibers than women, since these are predominantly slow fibers.
Rapid muscle fibers to the leg muscle, generating more powerful contractions with less presence of oxygen and greater lactic acidification in the metabolism of the energy currency.
Explanation:
Fast and slow fibers are two different types of fibers, these are usually trained according to the histology or physiology of each athlete.
Those with the highest amount of fast fibers will train and perform better in high-power physical activities, that is, for short distances with little demand for oxygen.
how can we reuse an old biosensor with a new device, knowing that the sensor is related to the mentioned device.
Please ❤️
Answer:
A biosensor is a analytical device used for the detection of the chemicals.
Explanation:
Biosensor is an analytical device that is used to detect the chemical substances. It combines the biological substances with the physiological substance that detect it properly.
The biosensor are the chemical detector that used receptors, the transducer and the electronic system that includes the signal amplifier.
The electronics and transducer combined and produce the CMOS that is microsensor system. This receptor is called a bioreceptor.
The main aim to produce the biosensor is make an easy and quick , convenient testing. So that it can measured sample that was procured at the point
Compared to stars viewed with the unaided eye, stars viewed with telescope appear
Answer:
Stars viewed with a telescope appear a lot closer than viewed with an unaided eye. That is because telescopes are basically magnifying glasses for you to scout the night sky and see distant things with better clarity.
Explanation:
Question 19 (5 points)
During puberty many changes in the body begin to occur. In males, more
testosterone is produces while estrogen becomes more prevelent in females. These
changes are largely induced by which gland of the endocrine system?
Pituitary gland
Adrenal glands
Parathyroid glands
Pineal gland
Answer:
pituitary gland
Explanation:
it produces it
Answer:
Pituitary gland
Explanation:
The pituitary gland plays an important role in growth and beginning the chemical changes that accompany puberty.
Which is a natural factor that causes long-term climate change?
Earth’s position
pollen grains
fossils
ice cores
Answer:
the is Earth's position
Answer:
A. Earths positions
Explanation:
ummmmmmm it is
A part of an mRNA has the sequence GGA. Which change to the sequence would indicate a missense mutation
Answer:
A replacement of a letter with different letter would indicate a missense mutation. (eg. GGA would become something like GCA and it would make something completely different).
Explanation:
A missense mutation is when the RNA replicates the instructions wrong from the DNA. When RNA is transcribed to make amino acids, it will make a completely different amino acid rather than the one that is needed/blueprinted. For example, if the sequence was AAG in the RNA (Derived from TTC DNA), it would create Lys amino acid. However, if the RNA sequence was AGG (Derived from abnormal TCC DNA), it would make Arg amino acid, which is different.
Answer:
GCA
Explanation:
just took it, ap ex
Which sentence relies on the connotation of the boldfaced word to convey
meaning?
A. Though it was hot outside, the air-conditioning made the room
cold.
B. When I told Dad that I had lost his keys, he went totally bananas.
C. Mom asked me to pick up some peaches from the market.
D. Kris pulled up the anchor, and we set sail for the enchanted island,
Answer:
B. When I told Dad that I had lost his keys, he went totally bananas.
Explanation:
The expression "he totally went bananas" needs to be bolded to convey meaning.
Hope it helps.
Which describes the four cells that are produced at the end of meiosis? identical haploid cells genetically different diploid cells genetically different haploid cells identical diploid cells
Answer:In many ways, meiosis is a lot like mitosis. The cell goes through similar stages and uses similar strategies to organize and separate chromosomes. In meiosis, however, the cell has a more complex task. It still needs to separate sister chromatids (the two halves of a duplicated chromosome), as in mitosis. But it must also separate homologous chromosomes, the similar but nonidentical chromosome pairs an organism receives from its two parents.
Explanation:Mitosis(Opens in a new window)(Opens in a new window) is used for almost all of your body’s cell division needs. It adds new cells during development and replaces old and worn-out cells throughout your life. The goal of mitosis is to produce daughter cells that are genetically identical to their mothers, with not a single chromosome more or less.
Meiosis, on the other hand, is used for just one purpose in the human body: the production of gametes—sex cells, or sperm and eggs. Its goal is to make daughter cells with exactly half as many chromosomes as the starting cell.
To put that another way, meiosis in humans is a division process that takes us from a diploid cell—one with two sets of chromosomes—to haploid cells—ones with a single set of chromosomes. In humans, the haploid cells made in meiosis are sperm and eggs. When a sperm and an egg join in fertilization, the two haploid sets of chromosomes form a complete diploid set: a new genome.
Answer:
b
Explanation:
Why are scientists studying the effects of warming on boreal forests? How far might this forest biome move if climate projections are correct?
Answer:
Scientists studying the effects of warming on boreal forests which change the biome.
Explanation:
The main effect of warming on boreal forests is to change the biome because the plants and animals will not tolerate the increased temperature which occcurs due to climate change so the plants and animals disappeared from the boreal forests and change its biome. The animals migrated to other suitable environment where they continue its growth and increase their population. If climate projections are correct, the biome of this forest go to those places where the environment is suitable.
Which of the following cis-acting elements of focused promoters serves as the binding site for TFIID?
1. TATA Box
2. Enhancer
3. BRE
4. INR
Answer:
1. TATA Box
Explanation:
TFIID, also called transcription factor II D, is a Transcription Factor that interacts with the minor groove of the TATA box. The TATA element is a core promoter component present in genes of eukaryotic organisms, which is formed by the consensus sequence TATA(A/T)A(A/T).
TFIID is involved in the first stage of the transcription process, during the formation of the pre-initiation complex. TFIID contains a TATA-binding subunit and a complex of associated factors (TBP-associated factors) that interact with specific RNA polymerases, for example, by interacting with the RNA polymerase II (RNAP II) during transcription of the messenger RNA (mRNA).
One reason cells divide is that
Answer:
A lot of answers ! :P In explanation
Explanation:
For example, when you skin your knee, cells divide to replace old, dead, or damaged cells. Cells also divide so living things can grow. When organisms grow, it isn't because cells are getting larger. Organisms grow because cells are dividing to produce more and more cells.
I hope I helped you :♡
Which process produces clones? asexual reproduction sexual reproduction chromosome duplication gamete formation
Answer:
asexual reproduction
Explanation:
In nature, some plants and single-celled organisms, such as bacteria, produce genetically identical offspring through a process called asexual reproduction. In asexual reproduction, a new individual is generated from a copy of a single cell from the parent organism.
Reproduction without the fusion of gametes is done without the fertilization of gametes, it is responsible for the formation of clones. The correct option is A.
What is a clone?The collection of genetically identical cells or in other words the organismsthat are produced without gamete fusion by a single progenitor either cell or organism is referred to as a clone.
Reproduction without the fusion of gametes do not have involvement of gamete, so crossing over will not take place in this type of reproduction.
As variation is the result of crossing over, this type of reproduction will have identical cells as the parent ones. These identical cells are called as clones.
Thus, the correct option is A.
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You are observing a sample of cells in the lab to determine why they did not divide properly. You notice that the chromosomes are lined up in the middle of the cell, and the spindle fibers have extended towards them, but have not attached. What could be damaged?
Answer:
The kinetochore of the chromosomes
Explanation:
What could be damaged that is hindering the spindle fibers from attaching to the chromosomes are the kinetochores of the chromosomes.
At the metaphase stage of the cell division, the chromosomes align at the equator of the cell and the spindle fibers engage each chromosome at a region known as the kinetochore.
The kinetochore is made up of complex proteins and lies around the centromere region of the chromosome. The microtubules of the spindle fibers attach to this region during the metaphase stage.
If the kinetochore is damaged, it means the spindle fiber will not be able to attach to the chromosome.
A graph titled "Average plant height (cm) vs. Concentration of sodium phosphate (mg/L)" shows an upward-sloping line that reaches a maximum value and then stays there over the remainder of the graph.
What noticeable trend from this graph might be used to make a conclusion?
A.
Average plant height increases with an increase in the concentration of sodium phosphate until the plants reach a maximum possible height.
B.
Average plant height causes an increase in the concentration of sodium phosphate.
C.
Average plant height is not affected by the concentration of sodium phosphate.
D.
Average plant height is halved every time the concentration of sodium phosphate is doubled until all of the sodium phosphate has been used up.
Answer:
A. Average plant height increases with an increase in the concentration of sodium phosphate until the plants reach a maximum possible height.
Explanation:
The graph in the attachment section portrays the average height of plants (cm) on the y-axis plotted against the concentration of sodium phoshate (mg/L) on the x-axis. Based on the observation of the result in the graph, an increase in the concentration of phosphate caused an increase in the average plant height (as depicted by the upward-sloping line).
However, the plant's average height didn't go beyond 35cm despite an increase in concentration of phosphate. This is because the plants has reached a maximum possible height i.e. a height climax. Hence, they cannot grow taller than 35cm no matter the amount of external nutrients (sodium phosphate) supplied.
Therefore, the noticeable trend that can be used to make a conclusion is that average plant height increases with an increase in the concentration of sodium phosphate until the plants reach a maximum possible height.
How did the control group differ from the experimental group in the 2005 peacock butterfly experiment?
Answer:
They were spotless and soundless
Explanation:
The control group is used as a reference to compare the result obtained from the experimental group.
The control group differ from the experimental group in the 2005 peacock butterfly experiment in ways such as the control groups of butterflies having their spots covered with paints. A small part of the peacock’s wings were also removed to prevent them from making sound.
This validates them being spotless and soundless
Draw a flow chart of the steps that would be employed by a neutrophil to eliminate a bacterial cell. Assume that no antibodies are present that recognize the bacteria as foreign.
Answer:
The neutrophil is the first line of defense, it is called as PMN OR POLYMORPHONUCLEAR NEUTROPHIL, this cell is said to be the first line of defense for the first to reach the area of infection or in the area of trauma, this upon reaching that area (where it is attracted by defense chemomodulators) it recognizes the bacteria or the foreign body as an antigen, since these do not present the cellular histocompatibility complex of our organism, by recognizing it as an antigen, this cell can detect that it is not something typical of our body but something new that was inoculated, is how this phagocyte to the bacteria and induces its own programmed cell death.
In an injury or infection, the purulent collection is not only debris and pathogenic microorganisms, but they are dead cell bodies of PMNs that induce their own cell death with the battery inside to be able to inhibit its advance in our body, when this phenomenon passes the PMN it is called a peach.
Explanation:
In the event that no antibodies are present, it would not change much if it is the first time that the bacteria enters our body since the formation of antibodies by the lymphocyte cell line occurs as the last stage of immunity (neutrophils appear first, then the antigen presenting cells and finally the lymphocyte lineage in charge of making immunological memory with antibodies).
The PMN are guided more than anything by the humoral factor of the immune response, but the proinflammatory factor like cytokines or leukins, but not by the antibodies, that is why he wrote this process of bacterial assimilation in the response.
If a lipid bilayer is at least 108 times less permeable to K ions than it is to water, how do the K ions that are needed for many cellular functions get into the cell
Answer:
Explanation:
If the lipid bilayer is at least 108 times less permeable to K ions than it is to water, then a way that this much needed ions can get into the cell is through ion channels.
Ion channels are memberane proteins that form pores and they also span across the cell membrane allowing ions to pass through these pores. They act as a passage through which charged ions can pass through. There are three main type: voltage-gated, extracellular ligand-gated, and intracellular ligand-gated ion channels.
The equations are not balanced. Which equation would have the same coefficients in the same order as 2CO2 + 3H20 C2H6O + 3O2? FeCl3 + NH4OH Fe(OH)3 + NH4Cl CH4 + O2 CO2 + H2O Fe + H2SO4 Fe2(SO4)3 + H2 PCl5 + H2O HCl + H3PO4
Answer:
Unbalanced= Fe + H2SO4 Fe2(SO4)3 + H2
Balanced with same coefficients in the same order= 2Fe + 3H2SO4 ---> Fe2(SO4)3 + 3H2
Explanation:
Balancing a chemical equation means having the same number of atoms of an element on the reactant side as on the product side in accordance to the law of conservation of mass. To do this, coefficients (number behind the element) are used.
In this question,the below balanced equation was given
2CO2 + 3H20 ---> C2H6O + 3O2
Four other unbalanced equations were also given to be balanced and see which will have the same coefficients in the same order as the template equation. Let's start balancing each equation.
1. FeCl3 + NH4OH ---> Fe(OH)3 + NH4Cl (unbalanced)
Atoms of nitrogen, hydrogen, oxygen and Chlorine are unequal in both sides. Hence, we have
FeCl3 + 3NH4OH ---> Fe(OH)3 + 3NH4Cl (balanced)
2. CH4 + O2 ---> CO2 + H2O (unbalanced)
Atoms of hydrogen and oxygen are unequal in both sides. We have;
CH4 + 2O2 ---> CO2 + 2H2O (balanced)
3. Fe + H2SO4 ---> Fe2(SO4)3 + H2 (unbalanced)
Atoms of iron, sulphur, and oxygen are unequal in both sides. Hence,
2Fe + 3H2SO4 ---> Fe2(SO4)3 + 3H2 (balanced)
4. PCl5 + H2O ---> HCl + H3PO4 (unbalanced)
Atoms of chlorine, hydrogen, and oxygen are unequal in both sides. Hence,
PCl5 + 4H2O ---> 5HCl + H3PO4 (balanced).
From the above balanced equations, it can be observed that; 2Fe + 3H2SO4 ---> Fe2(SO4)3 + 3H2 has the same coefficients in the same order as 2CO2 + 3H20 ---> C2H6O + 3O2
That is, coefficient 2---- 3 ---- 1 ----- 3.
Taking into accoun the law of conservation of matter, the reaction 2 Fe + 3 H₂SO₄ → Fe₂(SO4)₃ + 3 H₂ has the same coefficients in the same order as 2 CO₂ + 3 H₂O → C₂H₆O + 3 O₂
In first place, you have the balanced equation:
2 CO₂ + 3 H₂O → C₂H₆O + 3 O₂
The coefficients of the balanced reaction in order are: 2 -3- 1- 3
Law of conservation of matter
The law of conservation of matter states that since no atom can be created or destroyed in a chemical reaction, the number of atoms that are present in the reagents has to be equal to the number of atoms present in the products.
Balance a chemical equationConsidering the law of conservation of matter, you must balance the chemical equation.
For that, you must first look at the subscripts next to each atom to find the number of atoms in the equation. If the same atom appears in more than one molecule, you must add its amounts
On the other side the coefficients located in front of each molecule indicate the amount of each compound for the reaction. This coefficient can be modified to balance the equation, just as you should never alter the subscripts.
By multiplying the coefficient mentioned by the subscript, you get the amount of each element present in the reaction.
This caseConsidering what was expressed above and the reactions given, the following balanced reactions are obtained:
FeCl₃ + 3 NH₄OH → Fe(OH)₃ + 3 NH₄ClCH₄ + 2 O₂ → CO₂ + 2 H₂O2 Fe + 3 H₂SO₄ → Fe₂(SO4)₃ + 3 H₂ PCl₅ + 4 H₂O → 5 HCl + H₃PO₄The coefficients of each balanced reaction in order are:
1 -3- 1- 31 -2- 1- 22 -3- 1- 31 -4 -5 -1Finally, the reaction 2 Fe + 3 H₂SO₄ → Fe₂(SO4)₃ + 3 H₂ has the same coefficients in the same order as 2 CO₂ + 3 H₂O → C₂H₆O + 3 O₂
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A cactus can either have long needles (L) or short needles (1). A cactus
grower crosses two cacti. The cross is shown in the Punnett square below.
LL
LL LL
ULI
What is the phenotype ratio for this cross?
O A. One long, three short
B. Four long, zero short
O C. Two long, two short
O D. Three long, one short
PREVIOUS
Answer:
The punnet square in this question is unclear. The punnet square has been attached as an image.
Based on the punnet square, the answer is C. Two long, two short
Explanation:
This question involves a single gene coding for needle length in cactus plant. The allele for long needle (L) is dominant over the allele for short needle (l).
According to the question, two cacti were crossed with genotypes Ll and ll respectively. The following allelic combinations of gametes will be produced by each parent
Ll- L and l
ll- l and l
Using these gametes in a punnet square (as seen in the image below), four possible offsprings with genotypes: Ll and ll will be produced in a 1:1 proportion.
Ll offsprings will be phenotypically long-needled while ll offsprings will be phenotypically short-needled. Hence, two long needle offsprings and two short needle offsprings will be produced in this cross.
Which of the following changes is most likely to happen if the process
shown
in the picture continues?
A. Increase in biodiversity
B. Increased access to useful minerals
C. Increased loss of soil nutrients
D. Increased recharge of groundwater
Answer:
C. Increased loss of soil nutrients
Explanation:
Deforestation and land degradation are the processes that adversely affect the environment. The continued process in the image can lead to the loss of soil nutrients. Thus, option C is correct.
What is deforestation?Deforestation is the process of destroying a large mass of the area by cutting and excluding the trees for various purposes including the building of infrastructure, roads, mining, etc.
Deforestation and land degradation are the factors that have a negative impact on the environment as ity leads to an increased level of pollution and destroys the soil quality and disturbs the water table.
The tree roots are involved in holding the soil that can get carried away by the strong winds and water. Deforestation can lead to soil erosion and a decrease in soil nutrients.
Therefore, the process of land degradation and deforestation can lead to increased loss of soil nutrients.
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The amino acid methionine is specified by the codon 5'-AUG, and a methionine tRNA can have the anticodon sequence 5'-CAU. Which of the following is the base sequence of the template strand of the part of the tRNA gene corresponding to the anticodon?
a. 5'-GTAb. 5'-CAUc. 5'-CATd. 5'-UACe. 5'-AUGf. 5'-GUAg. 5'-TACh. 5'-ATG
Answer:
g. 5' GUA
Explanation:
Because it is a reverse start codon to the 5'-AUG. Template stands and coding strands have the reverse of each other
A-T(DNA), A-U (RNA), G-C
Hope this helps.
The base sequence of the template strand of the part of the tRNA gene corresponding to the anticodon is 5'-GUA. So, the correct option is F.
What is a Template strand?Any strand which is used by DNA polymerase/RNA polymerase to attach a complementary base during DNA replication/RNA transcription. It provides an idea for replication.
The amino acid methionine is specified by the codon 5'-AUG, the template strand of the part of the tRNA gene is a reverse of the start codon. Template stands and coding strands are complementary to each other in such a way as to facilitate the process of DNA replication or RNA transcription.
Therefore, the base sequence of the template strand of the part of the tRNA gene corresponding to the anticodon is 5'-GUA.
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You often see high-pressure areas and low-pressure areas indicated on weather
maps. Which statement best describes the wind direction with respect to these high-
and low-pressure areas?
Wind will blow towards low-pressure areas and away from high-pressure areas.
Consider a general Eudicot flowering plant. Identify three major "above ground" structures and two major "below ground" structures.
Answer:
See the answer below
Explanation:
A Eudicot flowering plant is a plant that comes up with two seed leaves during the process of germination. Generally, Eudicot plants are characterized by netted venation of leaves, floral parts in 4/5 or multiples, and ring arrangement of vascular bundles.
Three major above-ground structure of a typical Eudicot include;
1. The stem
2. The leaves
3. The flowers (for those that have reached maturity)
Two major below-ground structures of a typical Eudicot include;
1. The roots
2. The root hairs
1. Describe at least one part of the experiment procedure you thought was essential for getting good results. Did you find that certain steps in the procedure had to be followed carefully to get consistent results? If you wanted better results, do you think there is a step that could have been added to the procedure? 2. Discuss your thoughts on the overall lab design. Did it help you understand the concepts better, or did it raise more questions? Do you think you could have designed a better experiment? If so, explain how and then discuss it with your classmates. Share some of your knowledge with them to learn a little more about this experiment.
Answer:
Control environment is the most important procedures for getting good results.
Explanation:
The control environment for an experiment is the essential part for getting good results. In control environment, there is no or less chances of infestation from the external environment which can cause the results of the data more acceptable. So the scientists prefers laboratory for performing experiment as compared to outer environment. So in my opinion for getting better results, the control environment is the most necessary experimental procedure.
Yes, for getting better results I think there is a step that could have been added to the procedure is to follow the international standard procedures for taking the readings by the experimenter.
Answer:
The control environment for an experiment is the essential part for getting good results. In control environment, there is no or less chances of infestation from the external environment which can cause the results of the data more acceptable. So the scientists prefers laboratory for performing experiment as compared to outer environment. So in my opinion for getting better results, the control environment is the most necessary experimental procedure.
Explanation: