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dsp73
3 years ago
5

Beadle and Tatum's concept of the gene has been further refined to state which of the following most correct and current idea?

Biology
1 answer:
Rufina [12.5K]3 years ago
3 0

Answer:

a. one gene - one enzyme

Explanation:

Genes are connected to enzymes was first suggested by Sir Archibald Garrod. Later on, Beadle and Tatum carried out genetic studies on <em>Neurospora </em>and confirmed Garrod's hypothesis.

The link between genes and enzymes was called “one gene-one enzyme hypothesis”.

But this hypothesis is not accurate and changed because some proteins are encoded by genes are not enzymes. Some genes do not encode a whole protein but a subunit of a protein. In general, one polypeptide (a chain of amino acids) encoded by one gene.      

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Organisms with similar body symmetry are considered more closely related to each other than to organisms with different body sym
leonid [27]

Answer:

A snail.

Explanation:

Sea slugs are in this phylum called mollusks. This group of animals includes animals such as snails.

8 0
2 years ago
A 14 month old child returns from surgery for an undescended testicle. when planning for the child's discharge, the nurse should
Drupady [299]

Remind the parents to observe the child for :

1. excessive bleeding.

2. infection at the surgical incision site.

If any of these are observed, the child should get immediate medical attention.

6 0
4 years ago
chambers A and B are placed next to each other but are separated by a film permeable to both glucose and fructose. chambers A co
Molodets [167]

Answer:

2.glucose move into chamber B faster than fructose

Explanation:  

  • Facilitated diffusion: refers to the transport of hydrophilic molecules that are not able to freely cross the membrane. Channel protein and many carrier proteins are in charge of this <u>passive transport</u>. If uncharged molecules need to be carried <u>this process depends on concentration gradients</u> and molecules are transported from a higher concentration side to a lower concentration side. If ions need to be transported this process depends on an electrochemical gradient. The glucose is an example of a hydrophilic protein that gets into the cell by facilitated diffusion.  Facilitated diffusion is a passive transport process because the cell does not need any energy to make it happen.  

The exposed scenario is an example of facilitated diffusion, a process that occurs in favor of the concentration gradient, and which rate depends on the concentration of molecules in each side of the membrane, in this case, glucose and fructose, among other factors that might also influence the diffusion rate. So, as the concentration of glucose is higher in chamber A (80%), and lower in chamber B (20%), in comparison with fructose, the first one will diffuse faster than fructose. The difference in concentration between both chambers is sharper in glucose, so its transport is faster than the fructose transport, which will also diffuse but at a lower rate.

7 0
3 years ago
Which of the following is not a physical irreversible change.
wariber [46]

Answer:

Burning of a candle

Explanation:

All of the other things cannot be undone. the burning of a candle can. Blow the candle out and you have undone a phisical change

I hope this answer helps you :)

4 0
3 years ago
Read 2 more answers
In 3-5 sentences explain which type of reproduction is more beneficial, asexual or sexual.
a_sh-v [17]

Answer:

3 or 5 sentances?

Explanation:

3 0
2 years ago
Read 2 more answers
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