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crimeas [40]
3 years ago
5

What determines which electron donor and electron acceptor a given microbe uses in its anaerobic ETS? Choose one: A. Microbes us

e the most common donor available for their donor; the only acceptor that works with the ETS is oxygen. B. The available donors and acceptors will induce gene expression of their redox enzymes, thereby allowing their use. C. Each bacterium can only use one donor and one acceptor in their ETS. D. Microbes use the most common donors and acceptors available.
Biology
1 answer:
faltersainse [42]3 years ago
7 0

Answer:

B. The available donors and acceptors will induce gene expression of their redox enzymes, thereby allowing their use

Explanation:

Electron transport chain is the important stage of cellular respiration where the electron is donated by certain redox molecules.

The ETC takes place in both the aerobic and anaerobic type of respiration wherein the aerobic respiration, oxygen is used as the electron acceptor whereas in the anaerobic respiration some other molecules like sulfate and nitrate are used.

In anaerobic respiration, the type of electron donors and the donor-acceptor molecules determine the fate of the chain as these molecules act as an inducer of the genes of redox enzymes and the genes for the enzymes are expressed.

Thus, Option-B is correct.

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Please explain the difference between a frameshift mutation and a base substitution mutation.
harina [27]

Answer:

A frameshift changes every codon past it. A base substitution only changes one codon.

Explanation:

DNA is comprised of nucleotides (A, C, T, G) that make up amino acids. Every three bases is called a codon and represents an amino acid.

In a frameshift mutation, a nucleotide is either added or deleted from the sequence. This offsets the entire sequence after it because the reading frame shifts. Here's an example:

ACTGCTATCGTCATC

If another T is added in between the first and second codons, then every codon after will be changed.

ACT>T<GCTATCGTCATC

A substitution mutation is usually less severe, as it only alters one codon in the sequence. These occur when one nucleotide is replaced by another one. Here's an example:

ACTGCTATCGTCATC

Let's say the first G is replaced by a T.

ACT>T<CTATCGTCATC

As you can see, none of the other codons changed.

Typically, a frameshift mutation is considered worse than a substitution mutation.

7 0
3 years ago
Read 2 more answers
the moon rotating twice in the same amount of time the moon orbit earth once.would you be be able to see the moons far side from
lesantik [10]

Answer:

no the moons far side is well you know FAR so it will be no

Explanation:

i am very sorry if wrong i am just trying to help so i can move on in to ambisous rank

5 0
3 years ago
The nervous system isn’t only
masya89 [10]
What’s the rest of the question
5 0
3 years ago
True or false: in the sequence aggcct, an available phosphate group would be found at the 5' end of the nucleotide labeled "t."
Oksanka [162]

The answer is false.

an available phosphate group would be found at the 5' end of the nucleotide labeled A. The 5′-end of a DNA contains a phosphate group that is  attached to the 5′ carbon of the ribose ring and that A phosphate group  permits ligation of two nucleotides ( phosphodiester bond).


4 0
3 years ago
What would happen if all the major mountain ranges, particularly in the north hemisphere were gone? The Rockies, Himalayas, the
mylen [45]

Answer:

These big and hefty mountain ranges are play important role in weather and wind patterns in their related geographical region. Mountain ranges such as Himalayas, Rockies and Alps affects the weather and movement of wind on global level as well.

In absence of these mountains the global pattern of the wind can be affected and cause drastic change in global climate change as they play crucial role as barrier to wind and jet streams by diverting or dividing it.

For instance Himalayas, during the northern winters diverts the wind and acts as barrier for wind which prevents it from freezing. Rockies and Andies blocks the moisture laden winds flow from Pacific Ocean to western flanks of the american continent that leads to a dry region called rain Shadow desert zone.

Hence if these mountain ranges are gone these impacts will not be felt. Similarly Himalayas in India, cause monsoon wind to strike and cause rain in the region. So winds are greatly affected by these Mountains. If these mountain ranges were gone, winds will flow undisturbed as there would be no barrier to global wind patterns.

6 0
3 years ago
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