Answer:
leaves are green because of the pigment in them.
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
climbing organ of betel plant
Answer:
The climbing organ of a betel plant: Is a Root
The climbing organ of the betel plant is a root. The correct option is b).
What is the betel plant?
A betel plant is of the family Piperaceae. The plant is evergreen and has green, shiny heart-shaped leaves. It is used as a mouth freshener in India and is widely eaten.
The roots that help the plant climb up are called adventitious roots. so they are the plant's climbing organs.
Thus, the correct option is b) Root, regarding the climbing organ of the betel plant.
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The options are attached below:
a) Tendrils b) Root c) Stem d) Leaves.
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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How long does it take for bugs to die?
How could you use different research methods to complement each other when studying a particular process in the brain?
Answer is given below
Explanation:
The brain is a complex structure and requires different methods to be declared in order to obtain a clear illustrator. Cavalder study is a method of comparing the brain of a dead person. For example, Einstein compared the brain to the brain of ordinary people. It has been hypothesized that the proportion of glia cells in the neuron is higher in a person with a higher IQ, such as Einstein. However, it cannot be confirmed that only a specific brain is available. The study of the session helps us to identify the problem associated with defects in a particular area and eliminates the function of a specific area of the brain. For example, clots form in the frontal lobe during a stroke, which can sometimes lead to epilepsy. The disadvantage of these methods is that the brain is not active. A new method of EEG electroencephalogram that measures electrical signals if each neuron is present. It measures brain activity when the brain is active. The EEG can provide information about the normal patterns of electrical activity in the brain, and although the EEG allows the researcher to quickly observe when these changes occur in real time, the electrode measures the surface of the skull and each electrode measures brain waves from large areas to be placed on the brain. EEGs do not provide a very clear picture of brain structure. The image of the brain cannot be obtained by changing the electrode to measure the electrical signal. but there are MRI techniques to provide more specific brain images. Functional magnetic resonance imaging uses the scan method using magnetic fields to create an image of the brain in each activity field. Therefore all mixed methods can help to study the brain and related activities more deeply and effectively.Answer:
Brain is a complex structure and needs analgamation of various methods to get a clearer picture.
One method is cavalder studies where brains of dead person is compared. For instance , Einstien brain was compared with ordinary people brain. The ratio of glia cells to neuron was hypothesised to be higher in high IQ person such as Einstien. However , this cannot be ascertained as only one special brain was available.
Lession studies help us identify the problem associated with a lession in a particular area and conclude the function of specific region of brain.for example , during stroke the is clot in frontal lobe that leads to epileptic ceasure sometimes.
Drawback of these method is that brain is not active. So new method of EEG electro encephelogram which measure electrical signals if each neuron. It measures brain activity when brain is active.
the EEG can provide information about the general patterns of electrical activity within the brain, and although the EEG allows the researcher to see these changes quickly as they occur in real time, the electrodes must be placed on the surface of the skull and each electrode measures brain waves from large areas of the brain. As a result, EEGs do not provide a very clear picture of the structure of the brain. A still images of brain cannot be obtained by placing electrodes to measure electrical signal.
But MRI techniques exist to provide more specific brain images. Functional magnetic resonance imaging uses a scan method utilising magnetic field to create an image of brain in each activity area.
Thus all methods combined can help in study of brain and associated activities more profoundly and effectively.
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Basic biology. Please help!
Answer:
TGGCAATCG
Explanation:
Remember:
Adenine always pairs up with either Uracil (RNA) or Thymine (DNA)
Cytosine always pairs up with Guanine (Both DNA and RNA)
You are given two test tubes, A and B, each with 3 mL of starch solution. You add 1 mL of amylase to tube A, and 1 mL of water to tube B. After waiting for 30 minutes, what would you expect to see?
Answer:
CHOOSE
Explanation:
MATHEMATICSN HOLD ON
D.H., a 54-year-old resort owner, has had multiple chronic medical problems, including type 2 diabetes mellitus (DM) for 25 years, which has progressed to insulin-dependent DM for the past 10 years; a kidney transplant 5 years ago with no signs of rejection at last biopsy; hypertension (HTN); and remote peptic ulcer disease (PUD). His medications include insulin, immunosuppressive agents, and two antihypertensive drugs. He visited his local physician with complaints of left ear, mastoid, and sinus pain. He was diagnosed with sinusitis and Candida albicans infection (thrush); cephalexin (Keflex) and nystatin were prescribed. Later that evening he developed nausea, hematemesis, and weakness and was taken to the emergency department. He was admitted and started on IV antibiotics, but his condition worsened throughout the night; his dyspnea increased and he developed difficulty speaking. He was flown to your tertiary referral center and was intubated en route. On arrival, D.H. had decreased level of consciousness (LOC) with periods of total unresponsiveness, weakness, and cranial nerve deficits. His diagnosis is meningitis complicated by an aspiration pneumonia and atrial fibrillation. D.H. has continued fever and leukocytosis despite aggressive antibiotic therapy.
What is the probable route of entry of bacteria into D.H.'s brain?
Answer:
Chances are, you haven't infected the bacteria in a hospital setting or surgery, as you could have contacted them anywhere.
What happened with said patient was the face of the immunosuppressive treatment, the defense of the patient was decreased and it generated a worse picture with a bacterium that would not act in such a pathogenic way in another person who does not receive corticosteroid treatment.
This deduction could be made since prior to pneumonia and meningitis there were other infections that occurred in the patient indicating immunosuppression or lowered immunity, which were alerts for professionals.
Explanation:
The immunosuppression generated by corticosteroids is an adverse effect of said drug, thus causing bacteria or other pathogenic microorganisms to more easily generate lethal diseases that occur, similar to the human immuno-insufficiency syndrome.
These pneumonias and meningitis are very common in children but not in adults, which means that the defense of acquired immunity throughout life would not be serious.
In patients like these where corticosteroids suppress the path of humoral defense factors, thus inhibiting the presence of COX and thromboxane A2 in the immune lineage, that is why the immunological tests are weakened and the bacteria have more spread or harmful effects such as this patient.
The bacterium does not indicate that it is intra-surgical or hospital-based because of the severity of the disease it triggered, but because the patient is immunosuppressed.
Being nervous interferes with sexual arousal. Explain why, with reference to the sympathetic and parasympathetic nervous systems.
Answer:
When one is nervous activates the sympathetic system and the irrigation towards the cardiac and muscular zone is increased, increases the arterial tension and the respiratory rate.
That is why the blood or blood volume is dispersed in these organs to be able to render efficiently in a moment of stress or flight for the human.
When we have sexual intercourse and there is sexual excitement, a large part of the blood volume goes to the reproductive organs to be able to irrigate the area and produce said excitement, if we are stressed in an alert situation, it will be harmed by the priority body to irrigate the main areas like heart and muscle.
Explanation:
It is important to clarify that the physiological stress in humans is a normal situation, thanks to the presence of cortisol and it is what keeps us active, but if it increases due to anxiety or overwork, psychological problems, etc., it will no longer be physiological due to that is in excess.
Thus, sexual arousal will also be affected by the psychological impotence generated by excess mental stress outside the vascular pattern.
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.
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.
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.
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.
Which pair of structures would provide a positive identification of an animal cell under a microscope? plasma membrane, A. endoplasmic reticulum B. Golgi apparatus, mitochondrion C. lysosome, flagellum D. cell wall, chromatin
Answer:Lysosome Flagellum
Explanation:
Answer:
c. lysosome, flagellum
Explanation:
k12 I took the test
Which of the following is the first step a researcher should take before experimentation begins?
A. Select laboratory equipment.
B. Generate a hypothesis.
C. Design experimental procedures.
D. Apply the units of the SI system.
Answer:
. Generate a hypothesis.
Explanation:
Normally the first step to take before any experimental procedures is the to make observations,This is necessary before experimental designs and hypothesis can occur.It is important because certain intriguing phenomenon must be unravel.
Later on some questions as to why/how ,or when this observation occur should be next.This is important to find out if there is any clues to the subject under investigation by previous researchers which may be useful to unravel more facts about the questions.
Note;In most cases formulation of questions is listed first before observation.However, in reality the two occurs simultaneously,because it may be the observation that promoted questions.
When an educated guess is needed to explain the phenomenon observed,hypothesis must be set up. The evidences available must be able to support the hypothesis Therefore these evidences must be testable ,to prove the hypothesis beyond doubt.
Experimental set up should be designed to test the hypothesis,and to confirm its feasibility.This involved the factor being manipulated (independent variable) and the factor which varies with the independent variable the dependent variable.Certain data are obtained,and collated.
Theses data are analysed to find out the relationships,And therefore to find out how they varies with the independent variables.
Conclusion is the last step,where a submission is reached if the data support the hypothesis,which may provide explanation to the phenomenon.
Based on this the sequence should be 1.Research questions 2.Observation 3.Hypothesis 4.set up experimental design and data collation 5. Data analysis 6,conclusion.
However, from the options given the nearest to the first step in absence of observation and research questions is hypothesis.Normally, if a research question and observation were there,this will be chosen as third.But,in absence,this can be taken as first
Question 17 of 25
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.
Question 5 of 30
1 Point
How is a virus different from a bacterium?
A. A bacterium is a living cell, but a virus is not
B. A bacterium causes illness, but a virus does not
C. A virus causes illness, but a bacterium does not
D. A virus is a living cell, but a bacterium is not
Answer:
The answer is option A.
A bacterium is a living cell, but a virus is not.
Hope this helps you
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).
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.
Question 3 (5 points)
Which macromolecule stores the most energy, and is needed by the cell in order to
produce ATP?
Nucleic acids
Carbohydrates
O Proteins
Lipids
Answer:
carbohydrates
Explanation:
Answer:
Carbohydrates
Explanation:
Carbohydrates are compounds made primarily of carbon, hydrogen, and oxygen that store the most energy. Generally, these are known as sugars. These molecules are required for cellular respiration and ATP production. Lipids and fats store energy, but are not used in ATP production. Proteins do not store energy and instead provide the raw materials for the body to build other molecules, called amino acids.
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:
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.
Need answers ASAP. What kind of a bug is this? I found it in my backyard, in PA. Where I used to live, I hardly ever saw these. I think it’s a grasshopper but I can’t be sure. It has wings but only uses time to glide. It can jump far, too. 1.25-1.5 inches long.
The temperature in a room is 56c. What would the velocity of a sound wave be at this temperature
Answer:
The temperature in a room is 56°C. The velocity of a sound wave be at this temperature would be 364.6 Hz.
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
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
2. Research how antibiotics affect bacterial cells. Which cell structure(s) are typically targeted? Based on this information do you think human cells are affected by the antibiotics? Include references to information sources used.
Answer:antibiotics produce antigens that kills bacteria....our WBC's also protect our body by producing antigens
Explanation:
No its limited use for human is good bcz its their body need over use affect kidneys
Answer:
press dat crown for meh
Explanation:
Why do you think so much photosynthesis occurs in the ocean?
Answer:
Whether the photosynthetic organisms has adaptive mechanisms to access sunlight. But yes they do.
Explanation:
Thank you.
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.