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ValentinkaMS [17]
2 years ago
6

A proposed theory in the history of evolution where prokaryotic cells engulfed aerobic heterotrophic prokaryotes and photosynthe

sis prokaryotes is called?
Biology
1 answer:
serious [3.7K]2 years ago
7 0
This theory is called endosymbiosis. 
Think this is how chloroplasts came into being as well as mitochondria.
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Generally speaking, which of the following mutations.....? would most severely affect the protein coded for by a gene? -a base s
Svet_ta [14]
The answer is <span>a frameshift deletion at the beginning of the gene.

The frameshift deletion means that due to the deletion, the reading frame will be changed. Because of this, changed mRNA will be synthesized and translated into altered protein. It is known that codon is a triplet (a set of three nucleotides), that code for certain amino acid. The earlier in the sequence the deletion occurs, the protein will be more severely affected.
For example, if codons on RNA are THE BIG BAD DOG and the frameshift deletion happens on the first triplet (earlier in the sequence), the changed sequence will be  TEB IGB ADD OG. If </span>the frameshift deletion happens on the third triplet (later in the sequence), <span>the changed sequence will be THE BIG ADD OG.</span> This way, if the<span> frameshift deletion occurs at the beginning of the gene,</span> the more codons will be changed and in turn, they will code different amino acids.
7 0
3 years ago
A single-stranded DNA sequence is attached to a microarray chip, and fluorescently labeled complementary RNA (cRNA) fragments (p
Darya [45]

Answer:

Option A , Genome

Explanation:

Microarrays that contains array of single stranded DNA are used to study thousands of gene expression for all the genes of a genome and are usually termed as DNA miscroarrays. These microarrays being single stranded allows attachment of complementary DNA strand to bind to their surface. The mRNA from the cell is extracted and converted into cDNA which is further used for DNA cloning.

Hence, option A is correct

5 0
2 years ago
Bruising is an element of which organ system
Citrus2011 [14]
Usually is only because of blood vessels breaking in the skin.
3 0
3 years ago
In all animals, the largest percentage of the body's fluids are located in the:
REY [17]
I think it would be in the cells
8 0
3 years ago
Some micronutrients, such as vitamins e and c, can function as antioxidants in that they are able to:
eduard
 Some micronutrients, such as vitamins e and c, can function as antioxidants in that they are able to neutralize free radicals. Radical are highly unstable molecules  produced in our body when we are exposed to toxins. <span>Vitamins C and E, carotenoids (including </span>beta-carotene<span>), and the mineral </span>selenium<span> are all powerful antioxidants found in food.</span>
6 0
3 years ago
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