Exam 7: Inside the Cell

The liver is involved in detoxification of many poisons and drugs. Which of the following structures is primarily involved in this process and, therefore, abundant in liver cells?

All of the following are part of a prokaryotic cell EXCEPT ________.

Proteins coded for by nuclear DNA but found within mitochondria move from the cytoplasm into mitochondria using ________.

Which organelle often takes up much of the volume of a plant cell?

Which organelle is the primary site of ATP synthesis in eukaryotic cells?

Scientists have found that polypeptides which are normally synthesized in the endoplasmic reticulum are about 20 amino acids longer when they are synthesized by ribosomes not attached to the endoplasmic reticulum. What is a possible explanation for the greater length of these polypeptides?

A primary objective of cell fractionation (including differential centrifugation) is to ________.

Motor proteins require energy in the form of ATP. ATP hydrolysis results in a conformational change that allows the protein to move along microtubular tracks (pathways). What structural component of the motor protein contains the ATP binding site and, therefore, changes shape to enable movement?

Cells require which of the following to form cilia or flagella?

In receptor-mediated endocytosis, receptor molecules initially project to the outside of the cell. Where do they end up after endocytosis?

Which of the following contains hydrolytic enzymes?

A cell with a predominance of free ribosomes is most likely ________.

Movement of vesicles within the cell depends on what cellular structures?

Which of the following is a major difference between prokaryotic cells and eukaryotic cells?

A cell with an extensive area of smooth endoplasmic reticulum is specialized to ________.

Which of the following is NOT found in a prokaryote?

Where are proteins produced other than on ribosomes free in the cytosol or ribosomes attached to the ER?

Which structure is common to plant and animal cells?

Tay-Sachs disease is a human genetic abnormality that results in cells accumulating and becoming clogged with very large, complex, undigested lipids. Which cellular organelle must be involved in this condition?

An organism with a cell wall would most likely be unable to take in materials through ________.