Answer:
pollution or deforestation can both decrease genetic diversity by killing certain species.
I was wondering if anyone could help with this? The photo is posted below.
Answer:
B.
Explanation:
Think about it this way: if water flowed through a smaller pipe, there would be more resistance than if water flowed through a bigger pipe. Same concept applies to electricity.
A 4-year-old child arrives at the clinic with his mother. The mother tells you that she recently moved in with her new boyfriend and her son has been very quiet lately
The animation demonstrates several traits that are characteristic of the primate order. In particular, it shows how primates have several features that enhance their vision and their sense of touch and dexterity. These characteristics make primates particularly well adapted to what type of environment?
Answer:
Arboreal Habitats.
Explanation:
The word arboreal has its roots in the Latin word arboreus, which means "relating to trees."
The word arboreal speaks to not just to animals that are adapted to the tree environment, but also to all other things that look like or take the branching form of a tree. An example would be a diagrammatic representation of one's family geology.
Examples of animals that live on trees are:
KoalaMajority of the Avian Species (especially those that can fly)Sloths etc.Cheers!
Drag each tile to the correct box
Place the items in order from highest to lowest degree of internal organization
tissue
organ system
HID
&
Answer:
cell
tissue
organ
organ system
I hope this helps
Order from highest to lowest degree of internal organization are organ system, organ, tissues, cell.
What are the characteristic feature of tissue?A group of cells with similar structure and performing specific function called as tissue.
In animal it can be up four types such as connective, muscle, nervous, and epithelial tissue.
Connective tissue is made up of cells and gel like substances. Except lymph and blood all tissue contains collagenous fibers.
Fibers Of connective tissue help in binding of bones, movement of lungs, physical support to cell.
Muscle tissue are up different types like skeletal, cardiac and smooth muscle.
Skeletal muscle help in binding of tendons to bones followed by movement.
Cardiac muscle in heart and help in contraction to pump blood.
Smooth muscle in the intestine helps in movement of food through the digestive tract.
Nervous tissue is present in the brain, spinal cord, and peripheral nerves, made up of neurons.
Epithelial tissue are present on the surfaces the skin, the trachea, the reproductive tract, provide protection to organs.
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7.
What holds combinations of atoms together in molecules?
O protons and electrons
atomic magnetism
nuclear forces
chemical bonds
Chemical bonds.
Chemical bonds hold the atoms of a molecule together thereby forming covalent bonds, when two atoms share electrons.
Which of the following best characterizes an ecological footprint?
A. A measure of environmental impact
B. A measure of biological productivity
C. A measure of biocapacity
D. A measure of land area
SUBMIT
Answer:
Option B
Explanation:
An economics footprint can be described as a measure of biological productivity.
Ecological footprints show a comparison of the rapidness of our resources consumption and waste generation to the rapidness of natural absorbing these wastes and also including our carbon emission.
Thus, one of the characteristics of ecological footprints is a measure of our biological productivity.
What is the role of RNA? edgunuity please
Answer:
Role of RNA in Biology. ... RNA is a unique polymer. Like DNA, it can bind with great specificity to either DNA or another RNA through complementary base pairing. It can also bind specific proteins or small molecules, and, remarkably, RNA can catalyze chemical reactions, including joining amino acids to make proteins.
Explanation:
RNA determines the sequence of amino acids in proteins and polypeptides by a two- step process: transcription of DNA produces mRNA in the nucleus, then translation of the mRNA to tRNA takes place at the ribosome in the cytoplasm.
Hope it helps.
Which is often used in the production of nuclear power?
what is an allele A. an organism that lives in eukaryotes b.a group of chromosomes c. a chromosome that determines gender d. a gene that causes specific trait
Answer:
d. gene that causes specific trait
Explanation:
hope this helped :3
Consider that it takes, on average, 24 hours (or 1,440 minutes) for each onion root tip cell to complete the cell cycle. You can calculate the amount of time spent in each phase of the cell cycle form the percentage of cells in that stage.
Percentage of cells in stage X 1,440 minutes = ________ minutes of cell cycle spent in stage.
Answer: Hope this helps you :)
To calculate the time spent on each stage of the cell cycle, we need to know the total time required to complete the cycle and the percentage of cells that are in that stage. Then, take the product of both values.
--------------------
According to the statement,
The percentage of cells in a stage X 1,440 minutes = Time in minutes of cell cycle spent in the stage.
So, to know how much time is spent in each stage of the cell cycle, we need to know the time it takes for a cell to complete the whole cell cycle, and how many cells there are.
We already know that it takes, on average, 24 hours (or 1,440 minutes) for each onion root tip cell to complete the cell cycle.
Now, we should count the number of cells. Since I do not have a slide, I will assume that there are at least 50 cells, and from that 50 cells present in the slide, 25 are in the same stage. Let us say that the 25 cells are in the prophase.
So, considering a total number of 50 cells (100%), 25 cells equals 50% of the total.
Now, we know that
Time required to complete the cell cycle = 1440 minutesPercentage of cells in the prophase = 50%
Minutes spent in prophase = % of cells in prophase x 1440 minutes
Minutes spent in prophase = 50% x 1440 minutes
Minutes spent in prophase = 0.5 x 1440 minutes
Minutes spent in prophase = 720 minutes
According to this example, cells spend 720 minutes of their time in the prophase.
Now, I suggest you count how many cells do you have in your slide, and recognize how many are in each of the stages. Then you will be able to calculate the real-time spent per stage.
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Some human proteins that are used in therapeutics, such as insulin, can be produced by genetically modified yeast. Though genetically modified bacteria can also be used to produce these therapeutics, yeast is considered by many to be the superior type of organism to use for this purpose. What is the advantage of using yeast cells instead of bacterial cells when expressing human proteins?
a. Yeast cells grow faster than bacterial cells when expressing human proteins.
b. Yeast cells splice mRNA in an identical manner as human cells.
c. Yeast cells fold and modify proteins in a manner similar to human cells.
d. Yeast cells use the same genetic code for specifying amino acids as human cells.
Answer:
The correct answer is c.Yeast cells fold and modify proteins in a manner similar to human cells.
Explanation:
Yeasts are known as one of the most useful microorganisms to humans due to the best known eukaryotic microorganisms.
As yeasts are eukaryotes like humans and hence have the system for post translational modification that is needed for proper folding of eukaryotic genes. Due to this fact and advantages yeast is considered by many to be the superior type of organism to use for for producing proteins.
Thus, the correct answer is C. Yeast cells fold and modify proteins in a manner similar to human cells.
the number of possible genetically different gametes for an organism equals 2n where n is the number of pairs of chromosomes if an organism has six pairs of chromosomes how many different gametes ca it produce
A. 64
B. 256
C. 32
D. 128
Answer:
64
Explanation:
After duplication, at what point does a cell become two cells with identical DNA? starting in prophase end of anaphase end of cytokinesis
Answer:
The correct answer is - end of cytokinesis.
Explanation:
Cytokinesis :- a procedure that partitions the cytoplasm and plasma layer of a cell, bringing about two indistinguishable cells that contain their own DNA, nucleus, nuclear membrane, and plasma membrane.
During the last phase of the cell cycle, cytokinesis permits the cell to complete the process of isolating, making two cells with indistinguishable duplicates of DNA
The cell squeezes in the equator area with the assistance of a ring of contractile protein filaments. The formed cleavage furrow develops until the two cells squeeze off totally.
Thus, the correct answer is - end of cytokinesis.
Answer:
end of cytokinesis
Explanation:
why during cold weather a person urinate more frequently and urine is more diluted?
Explanation:
Cold weather will result in your body needing to filter more blood than normal as blood is rushing to your vital organs at a higher frequency. This results in you having to pee more often.
What is a recombination? How is it different from mutation
A compound synthesized by bacteria or fungi that destroys or inhibits the growth of other microbes is a/an:__________.
a. synthetic drug
b. antibiotic
c. antimicrobial drug
d. competitive inhibitor
Answer:
antimicrobial drugs
Explanation:
An antimicrobial is a substance that kills or inhibits the growth of microorganisms such as bacteria, fungi, or protozoans.
Answer:
[tex]\boxed{Option C}[/tex]
Explanation:
A compound synthesized by bacteria or fungi that destroys or inhibits the growth of other microbes is an anti-microbial drug. Anti means "against" so anti microbes mean against microbes. Antimicrobial drugs are synthesized by bacteria and fungi and are used against microbes.
QUESTION 20 "Nitrous acid causes all possible transitions (A<-- -->G, C<-- -->T). If a protein has an alanine at position 65, what amino acid(s) would be likely to replace alanine as a result of nitrous acid mutagenesis
Answer:
Explanation:
Nitrous acid mutation occurs when a Nitrogenous base is replaced by a keto group.
Alanine is replaced by hypoxanthine,
Cytocine is replaced b Uracil
Guanine is replaced by Xanthine.
Nitrous mutation often affects Adenine, Cytocine and guanine. The Nitrogenous base is changed into another substance(keto group)
Alanine at position 65 would be replace by hypoxanthine a keto group which is a form of nitrous mutation.
Other forms of amino acid mutation
Mutation of amino acid nitrogenous base can either be transition or transversion.
Transition is the substitution of a purine base by another purine base. Since purine are Adenine and Guanine
Pyrimidine is cytocine and thymine or Uracil. Adenine can be substituted for by guanine or guanine by adenine
E.G A - G now G - A where Guanine substitute Adenine
Whole transversional substitution can also occur which involve a purine been substitued for by a pyrimidine or pyrimidine by a Purine.
A - G
Now C-G where cytosine substitute Adenine.
The frequency of purple pollen cones is 0.34 in a population of Virginia pine (Pinus virginiana). In the same population, the frequency of four needles per fascicle is 0.67.
If these two traits are independent, what is the probability that a single pine tree has both purple pollen cones and four needles per fascicle? (calculate to 2 decimals)
Answer: P(p and f) = 0.23
Explanation: The frequency of a specific trait is also the probability of that trait appearing in that population. So:
Probability of purple pollen cones: P(p) = 0.34
Probability of four needles per fascicle: P(f) = 0.67
Using multiplication rule:
P(p and f) = P(p)*P(f)
P(p and f) = 0.34*0.67
P(p and f) = 0.23
The probability of having both purple and four needles is 0.23
Bob is struck on the left side of the head with a board and is knocked unconscious. When he recovers consciousness, he can hear but cannot understand what is being said to him. This implies damage to the:________a) Speech center.b) General interpretive area.c) Prefrontal lobe.d) Inner ear.
Answer: Option D.
Damage to inner ear.
Explanation:
Cochlea damage or inner damage causes permanent hearing loss.
It is the inner ear of Bob that is damaged because the inner ear is responsible for changing soundwaves to electrical waves because the inner ear make the brain to hear and understand sounds and therefore keeping balance . So damage to the inner ear causes hearing loss and inability to understand what is heard because the cochlea of the inner that change soundwaves to electrical signals or nerve impulses which allow the brain to hear and understand is damaged.
Some other symptoms of inner ear damage are;
Dizziness or spinning sensation (vertigo)
Nausea and vomiting.
Problems with balance or walking.
Hearing loss (or decrease in sound volume) in one ear.
Earache or ear pain.
Fever (sometimes)
Feeling of fullness in the ear.
7) We learned that post-transcriptional processing is very important in eukaryotic cells, such as those in our own
bodies. Of what possible advantage could this be to a cell? Name one part of mammalian (including human) function
that relies very much on the 'slicing and recombination that is part of post-transcriptional processing.
Answer:
Alternative splicing is a posttranscriptional modification that enables to produce many proteins from a single gene, thereby increasing its functional diversity. In mammals, alternative splicing has shown to be associated with the control of different signaling pathways in response to environmental conditions.
Explanation:
Posttranscriptional modifications are required for the maturation of primary RNA transcripts, and it is associated with the process of translation into proteins. These types of modifications include the alternative splicing in order to remove introns of pre-mRNA molecules, the addition of a cap to the 5' end and polyadenylation of the 3′ end of mRNAs, etc. For example, the polyadenylation (poly-A) of mRNA tails provide stability to these molecules, thereby they are more resistant to exonucleolytic degradation and thus can be translated into proteins.
what is ecological footprint
Explanation:
Ecological footprint:
Is a Measure the area required by an individual, population or activity of biologically produced land and water to produce all the resources it consumes and absorb the waste it generates, using prevailing technology and resource management practices. Hope this helps and have a great day! Good luckThe practical application of science Is colled ....
Answer:
Applied research is the practical application of science. It accesses and uses accumulated theories, knowledge, methods, and techniques, for a specific, state-, business-, or client-driven purpose.
hope this answer is correct .....
Answer:
The practical application of science is called Technology . Technology is the sum of techniques , skills , methods , and processes used in the production of goods or services or in the accomplishment of objectives , such as scientific investigation .
Hope this helps
ADVANTAGES OFCORONA VIRUS
Answer:
Coronavirus in its own doesn't have an advantage.
I believe that it helps us to prevent other epidemic diseases such as cholera and other diseases that are caused by lack of sanitization.
Since washing hands frequently is the way of preventing coronavirus.
And wearing mask also helps us to prevent other respiratory diseases being transmitted.
A control variable is: A. Measured to show the effect of a change. B. Collected to draw conclusions. C. Changed to test a hypothesis. D. Kept the same to make an experiment a fair test.
A control variable Kept the same to make an experiment a fair test. Thus, option D is correct.
What Is a Control Variable ?
Variables may be controlled directly or indirectly by randomization methods.
A control variable is a type of variable unit which held constant in a research study.
It’s variability does not involve study aims but it is controlled and also show an influencing effect on the study outcomes.
It limits the effect of confounding and other extraneous variables and enhance the internal validity of a study.
In an experiment, the effect of an independent variable on a dependent variable can be investigated, for this control variables will help to understand that the results are caused by manipulated data in experiments.
Thus, option D is correct.
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Which kind of joint allows the arms to swing in circles? hinge
ellipsoidal
ball-and-socket
sliding
Answer:
hinge
Explanation:
BALL AND SOCKET Explanation:
Organize the levels of organization in the human body from the smallest (left) to the largest (right) component.
organ
organ system
cell
tissue
Answer:
Cell, Tissue, Organ, Organ System
Explanation:
Cell, tissue, organ and organ system are the levels of organization in the human body from the smallest to the largest component.
What is cell?Cell is the basic structural and functional unit of an organism.
What is tissue?Tissue is formed by the group of cells.
What is organ?Organ is formed by the group of tissues.
What is organ system?Organ system is formed by the group of organs.
What are levels?Levels are the arrangements.
What is organization?Organization is the hierarchy of biological systems.
Therefore those are the organization levels in the human body.
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Which of the following is a correct comparison between RNA polymerase holoenzyme that functions in transcription and the primase enzyme that functions in DNA replication?
A) Both enzymes synthesize RNA
B) Both enzymes are bound by sigma factor
C) Both enzymes shnthesize DNA
D) Both enzymes are composed of RNA
Answer:
Option A
Explanation:
RNA polymerase is an enzyme that aids in the transcription of DNA into RNA during transcript in the nucleus.
Primase is an enzyme that synthesizes short RNA sequences called primers. These primers serve as a starting point for DNA synthesis during replication as the DNA polymerases cannot begin the synthesis of the new strand, they only extend it after primase begins it.
And since primase produces RNA molecules, the enzyme can be said to be a type of RNA polymerase.
A mutation of the proteolytic enzyme Trypsin results in a stable covalent bond between one of the catalytic amino acids of the protease and its protein substrate. Which of the following are probably true?
a. The enzyme would become inactive.
b. The enzyme and substrate would be stuck together.
c. The delta-G of the proteolysis reaction would change.
d. The rate of the catalyzed reaction would increase.
b. The enzyme and substrate would be stuck together.
You will be given a stock solution of BSA protein with a BSA concentration of 2 mg/mL. (Here, "mgimL is the concentration unit instead of molarity.)
1) Use the parallel dilution formula to calculate the volume of this stock solution you will need to make 100 HL of each BSA dilution shown in the table below. The desired concentrations of these dilutions are provided in the first column of the table.
2) Calculate the volume of water required so that each dilution will have a final volume of 100 μL
Transfer your calculated values to Table 1 of the Lab Procedures.
Protein concentration(mg/mL) of BSA dilution Volume of BSA stockneeded (uL) Volume of waterneeded (uL)
0.10
0.15
0.20
0.25
0.30
0.35
0.40
Answer: See table in the attachment.
Explanation: 1) The Parallel Dilution Formula is given by:
[tex]C_{1}.V_{1} = C_{2}.V_{2}[/tex]
where:
C is concentration
V is volume
For the given data, index 1 represents the concentration and volume of the stock solution and index 2, the concentration and volume of the diluted solution. For example:
[tex]V_{1} = \frac{C_{2}.V_{2}}{C_{1}}[/tex]
[tex]V_{1} = \frac{0.1.100}{2}[/tex] = 5 μL
[tex]V_{1} = \frac{0.15.100}{2}[/tex] = 7.5 μL
[tex]V_{1} = \frac{0.2.100}{2}[/tex] = 10 μL
[tex]V_{1} = \frac{0.25.100}{2}[/tex] = 12.5 μL
[tex]V_{1} = \frac{0.3.100}{2}[/tex] = 15 μL
[tex]V_{1} = \frac{0.35.100}{2}[/tex] = 17.5 μL
[tex]V_{1} = \frac{0.2.100}{2}[/tex] = 20 μL
Substituing [tex]C_{2}[/tex] for each concentration given and find each volume needed.
The results is shown in the second column of the table.
2) The stock and total volume is determined. So, to calculate the volume of water needed:
[tex]V_{H_{2}O} = V_{total} - V_{stock}[/tex]
[tex]V_{H_{2}O}[/tex] = 100 - 5 = 95 μL
[tex]V_{H_{2}O}[/tex] = 100 - 7.5 = 92.5 μL
[tex]V_{H_{2}O}[/tex] = 100 - 10 = 90 μL
[tex]V_{H_{2}O}[/tex] = 100 - 12.5 = 87.5 μL
[tex]V_{H_{2}O}[/tex] = 100 - 15 = 85 μL
[tex]V_{H_{2}O}[/tex] = 100 - 17.5 82.5 μL
[tex]V_{H_{2}O}[/tex] = 100 - 20 = 80 μL
As shown in the third column of the table.
Predict the classification level that would first differentiate these snakes from a frog or a toad a.genus b.order c.phylum d.class
Answer:
d.class
Explanation:
All living organisms were grouped into a system of classification comprising of 7 levels i.e. Kingdom, Phylum/Division, Class, Order, Family, Genus, and Species. Organisms grouped into the same level of classification has something in common.
In this question, a snake, frog or toad are different species of organisms. They all belong to the same Kingdom, which is Animalia. Snakes, toads and frogs are also commonly grouped into the Phylum Chordata because they all possess a backbone.
However, the next level of classification, which is CLASS, is the first to differentiate the snake from a toad or frog. Snakes belong to the class: Reptilia while toads and frogs belong to the class: Amphibia i.e. animals that can live on both land and water.
Answer:
The classification level that would first differentiate snakes from a frog or a toad is the Class.
Both animals belong to the Animal Kingdom, both also belong to the Phylum of Chordata.
However, when it comes to Class, the snakes belong to the Reptilia, while the frogs belong to the Amphibia.
Kindly note that when it comes to levels of classification in the animal kingdom, there are 7 levels namely
Kingdom Phylum or division ClassOrderFamilyGenus, and Species. The largest group is the Kingdom while and Species is the smallest.Cheers!