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GenaCL600 [577]
3 years ago
11

One necessary condition for the evolution of the first life on earth was

Biology
2 answers:
balandron [24]3 years ago
6 0
D) the presence of liquid water
Ghella [55]3 years ago
5 0

Answer:

The Presence of Liquid Water

Explanation:

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An important characteristic of antibacterial drugs is their selective toxicity. if antibacterial drugs were not selectively toxi
Vanyuwa [196]

Answer;

-inhibition of peptidoglycan synthesis

-inhibition of fimbriae synthesis

-interfering with translation at 70s ribosomes

Explanation;

- Selective toxicity refers to the ability of the drug to targets sites that are relative specific to the microorganism responsible for infection. Sometimes these sites are unique to the microorganism or simply more essential to survival of the microorganism than to the host.

-Antibacterial action generally falls within one of four mechanisms, three of which involve the inhibition or regulation of enzymes involved in cell wall biosynthesis, nucleic acid metabolism and repair, or protein synthesis, respectively. The fourth mechanism involves the disruption of membrane structure.


7 0
3 years ago
From the following, choose the factors that may produce or increase the risk of mutations.
mel-nik [20]

Answer:

High Temperature, X-rays, Radiation, Some Chemicals

Explanation:

In general, mutations happen due to some error in the DNA duplication process, however, there are certain factors in the environment that can increase the incidence rate of these genetic errors. Excessive exposure to x-rays, substances present in smoke, ultraviolet light, excessive temperature, nitrous acid and some dyes present in food, for example, can favor the appearance of mutations. In general, we can say that mutations can be caused by high temperature, X-rays, radiation, some chemicals.

8 0
3 years ago
A change in the frequency of alleles in a gene pool can be explained by all of the following except?
ivanzaharov [21]
The correct answer of the given question above would be option D. CHROMOSOMAL POTENTIAL. A change in the  frequency of alleles in a gene pool can be explained by all of the following except the chromosomal potential. <span>A change in allele frequency is more likely to produce microevolution. Hope this answer helps.</span>
4 0
3 years ago
Read 2 more answers
a reduction of the size of a population to single or few individuals resulting in loss of genetic variation is known as the ____
makvit [3.9K]

Answer:

Bottleneck effect

Explanation:

The Bottleneck effect is when species go through an event that reduces its population. The ones that survive have reduced genetic diversity compared to the original population since fewer individuals means there are fewer genotypes.

3 0
3 years ago
The data here indicates the number of species of amphibians that are affected by several factors in their environments.
Nana76 [90]

Answer:

b i hope it helps you !!!

Explanation:

7 0
3 years ago
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