B, an Amoeba. Amoebas are a great example of a unicellular organism, and they rely on a surface area to volume ration which allows them to grow and eat.
<h3>Oxidative Phosphorylation</h3>
Explanation:
The process by which ATP is generated by utilizing the large amount of energy released during the transfer of electrons from NADH or FADH₂ to the O₂ through a series of electron carrier present in the mitochondrial membrane is called oxidative phosphorylation.
The process of electron transfer is accompanied by the pumping of protons across inner membrane of mitochondria, from the mitochondrial matrix to intermembrane space establishing electrochemical proton gradient.
The ATP synthase complex present in the mitochondrial membrane allows the protons to move down the proton gradient as a result enough energy is released to add a phosphate group to ADP and form ATP inside the mitochondrial matrix.
Answer: A (AA x aa)
Explanation:
In option (A) both of the parent mussels are homozygotes, for alleles "a" and "A" respectively. Therefore, every single one (100%) of their offspring would be expected to be Aa heterozygotes. Combinations (B) and (D) yield a lower proportion of heterozygotes (50%), and combination (C) yields none at all. Punnett squares follow:
(A)
<u> | A A </u>
<u>a | aA aA </u>
<u>a | aA aA </u>
<u />
(B)
<u> | A a </u>
<u>A | AA Aa </u>
<u>a | aA aa </u>
<u />
(C)
<u> | A A </u>
<u>A | AA AA </u>
<u>A | AA AA </u>
<u />
(D)
<u> | A a </u>
<u>a | aA aa </u>
<u>a | aA aa </u>
<u />
Prokaryotic organisms tend to be single celled and rely on many simple mechanisms for nutrition and transport. However, eukaryotic organisms are more complex and have multiple systems within in their body, consisting of specialized cells and structures. Therefore, because <span>the need to create many differentiated cell types in eukaryotes means that there must be many mechanisms to modulate gene expression.</span>