Answer:
Can have a cell wall ~ Prokaryotic
Unicellular organisms ~ Both
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<span>A. </span>Mechanoreceptor–temperature </span>
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<span>B. </span>Photoreceptor–chemicals </span>
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C. Pain receptor–tissue injury
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<span>D. </span>Chemoreceptor–pressure </span>
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Answer:
A truncated protein refers to a protein that gets shortened due to a mutation, which does not allow the process of translation to take place properly. The formation of a truncated protein can take place due to a frameshift mutation of one or two base pairs. In such kind of mutation, a single or two base pairs get withdrawn from the sequence resulting in the formation of a completely changed triplicate codon sequence, which may result in the generation of a truncated protein comprising a different set of amino acids.
A nonsense mutation can also result in the formation of a truncated protein. A nonsense mutation generally codes for certain kinds of amino acid, however, post mutation can get converted into a stop codon. This transformation can result in the formation of a truncated protein.
Deletion or insertion at the chromosomal level can also result in the formation of a truncated protein. As insertion and deletion of a certain concentration of DNA can probably lead to the formation of a novel codon that can either be a nonsense codon or a stop codon, which may eventually result in the formation of a truncated protein.
Hence, the correct answers are statements 1st, 2nd, 3rd, 4th, and 6th
Answer:
Marine mammals use sound in a variety of ways while feeding. One well-known example is echolocation, in which animals produce short pulses of sounds that are reflected back when they strike an object.
Deposit feeders pass sand, mud, water or sediment into their mouths
Suspension feeders catch food or organic material from the water using tentacles or spiny arms
Filter feeders; capture food that is suspended in the water by creating a current within them for the water to flow through.
Predators actively seek out their prey items. In the ocean, some predators can be adapted to blend in with the surrounding area and wait for a prey item to pass by or they can be adapted to move quickly to chase down prey.
Explanation:
Bottleneck is the term used to define chance changes in the frequency of alleles which have a significant effect on small populations. The effect is that the population is greatly reduced because of the change in the allele frequency. A genetic drift will follow which will expedite evolution.