A scientist looks at two different cells under a microscope. Cell A has many more ribosomes than cell B. What can the scientist conclude about the cells?
<em><u>A. Cell A makes more proteins than cell B. </u></em>B. Cell B makes more proteins than cell A. C. Cell A and cell B make the same proteins.
<em><u>this is because ribosomes are responsible for the synthesis, or production, of proteins.</u></em>
Plant cells and animal cells do not look exactly the same or have all of the same organelles, since they each have different needs. For example, plant cells contain chloroplasts since they need to perform photosynthesis, but animal cells do not. Diagram of an animal cell with components lettered.
This control is called negative feedback. Mechanism of negative feedback. Each metabolic reaction or process is regulated by several enzymes. These enzymes control the rate of these reactions and thus are fundamental in maintaining homeostasis. In a negative-feedback pathways, the end product of a pathway binds to the allosteric site of the first enzyme, closing its active site and blocking the rest of the reactions.
