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horsena [70]
3 years ago
13

How many amino acids could be specified if codons consisted of two nucleotides instead of three? What problem would this present

for an organism making proteins using all 20 amino acids? I need help with the last part i dont undertsand
Biology
1 answer:
Greeley [361]3 years ago
7 0

Answer:

This could result in a mutation.

Explanation:

A change in the DNA can affect the work of cells because it can cause a mutation; it can be a good mutation or bad. The three main mutations that occur are Insertion, Deletion and Substitution. Insertion is when DNA base(s) are added in, Deletion is when DNA base(s) are removed. Lastly, Substitution is when DNA base(s) are switched on. All of these mutations can have effects. These effects are Silent effect, Missence, and Nonsense. Silent effect is a mutation that does not change the sequence of amino acids in a protein. Missence is a mutation that causes the sequence of amino acids to change. This can cause incorrect protein folding and protein malfunction. Nonsense is a mutation that causes an early stop codon. This effect leads to a protein that is too small. Also a Frameshift can occur. Framshift is when the reading of a frameshift is moved over by one or more bases such that every subsequent amino acid changes. An example of a frameshift is THE CAT ATE THE RAT. If you insert an A at the Beginning this happens ATH ECA TAT ETH ERA T. IN Conclusion there are two Mutations that also play a role in this Point Mutation and Chromosomal Mutaion. Point Mutation is when a single DNA base is either substituted, inserted or deleted from the sequence. Chromocomal Mutation is when large pieces of a chromosome or an entire chromosome is either substituted, inserted or deleted.

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What are some things you would have to label and describe or identify when preparing a herbarium folder.
julia-pushkina [17]

Answer:

The main step to prepare herbarium sheet are:

Collection and pressing of specimens. Fresh materials are pressed in plant press in herbarium press. ...

Drying of specimens. ...

Mounting of specimens on herbarium sheets. ...

Labeling of specimens. ...

6 0
3 years ago
When alcohol intake exceeds the body's ability to metabolize it, excess alcohol __________.
katen-ka-za [31]

Answer:

becomes accumulated in the blood

Explanation:

The processing of alcohol is constant in every individual. The rate at which alcohol stays in someone's body is determined by how much of it is consumed.

Alcohol enters the digestive system once ingested and travels to the stomach and small intestines. The amount of alcohol absorbed in the small intestine enters directly to the bloodstream. Once in the blood, alcohol is circulated with it. The liver is responsible for the metabolic elimination of most (about 95%) of ingested alcohol from the body. If an individual consumes more than this, the system becomes saturated, and the additional alcohol will accumulate in the blood and other tissues until it can be metabolized. If this happens frequently or too fast, damage to the brain and tissues of the body can occur.

Blood Alcohol Concentration (BAC) depends on the amount of alcohol consumed and the rate at which the individual's body metabolizes alcohol. Because the metabolism of alcohol by the body is constant, taking in alcohol at a rate higher than the rate of metabolizing it results in a cumulative effect and increase in the blood alcohol concentration.

It is important to note that, the more one drinks the longer alcohol stays in the system.

6 0
3 years ago
The ____________ functions as a gateway through which chemicals and small particles, such as ____________ enter or leave the cel
Vilka [71]

Answer: cell membrane

such as water, micro-organism

physical process

simple diffusion, osmosis and filtration

such as potasssium permaganate in water,urea a liver waste diffuses from the body and the kidney help in filtering it out

physiological processs

active transport, phagocytosis and pinocytosis

such as soduim-potassium pump, exocytosis

Explanation:  transportation in and out of cell is done in different ways listed above but a barrier to this movement is the cell membrane which is an outer covering of the cell. it protect the cell and only some materials can penetrate the cell membrane e.g micro-organism, water e.t.c. the various physical and physiological processes are the various ways substance  cna be liquid, solid or gas are transported within or outside the  cell e.g food

6 0
3 years ago
Cats and other nocturnal predators have a greater number of rod cells in their eyes compared to cone cells. What would you predi
Annette [7]

It is possible to predict that because of the decreased number of cone cells, cats have poor color vision.

<h3>What are cone cells?</h3>

Cone cells are specialized cells in the eye required to produce the spectra of color observed in nature.

Cone cells can be considered photoreceptors located in the retina of the eye (in animals and humans).

Cone cells act in the best way in bright light conditions, conversely to rod cells that serve to observe at the night.

Learn more about cone cells here:

brainly.com/question/13942524

8 0
2 years ago
12. One similarity between DNA and messenger RNA molecules is that they both contain
kap26 [50]

Answer:

B

Explanation:

In fact, mRNA's bases are directly copied from DNA. However mRNA's bases are complimentary to DNA's .!

7 0
2 years ago
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