Question 1

How is ATP synthesized via electron transport and oxidative phosphorylation? Be sure to include the following items in your

Accepted Answer

electrons, glycolysis, Krebs cycle, NADH, FADH₂, hydrogen ion pump, intermembrane space, ATP synthase, ATP, and oxygen.

Question 2

The rough endoplasmic reticulum

Accepted Answer

The rough endoplasmic reticulum (RER) is studded with ribosomes and synthesizes proteins for export from the cell or for use in construction of a new cellular membrane. It is continuous with the smooth endoplasmic reticulum and is connected to the nucleus. Therefore, all of these statements are correct.

Question 3

Which component below is not always found in a typical human cell?

Accepted Answer

Flagellum is not always found in a typical human cell. While some cells in the human body, such as sperm cells, do have flagella, most other cells do not.

Question 4

Of the organelles below, which occurs in the lowest number within a typical human cell?

Accepted Answer

A typical human cell is usually a eukaryotic cell with a single nucleus, whereas other organelles like mitochondria, vaults, peroxisomes, and lysosomes can be present in multiple copies.

Question 5

Select the incorrect statement about the smooth ER.

Accepted Answer

The answer of Select the incorrect statement about the smooth...

Question 6

Select the incorrect statement about ribosomes.

Accepted Answer

Ribosomes do not have a membrane. They are composed of two parts, a small subunit and a large subunit, and are responsible for assembling polypeptides through the process of protein synthesis. They may be found free in the cytoplasm or bound to the endoplasmic reticulum. Additionally, ribosomes are composed of both RNA and protein.

Question 7

Which structure is not associated with the secretion of proteins produced by ER?

Accepted Answer

Lysosomal membrane is not involved in the secretion of proteins produced by ER. It is involved in the degradation of materials brought into the cell. The other structures listed are involved in the secretory pathway of proteins.

Question 8

Describe the structure and function of cilia and flagella. Be sure to include the following in your

Accepted Answer

The answer of Describe the structure and function of cilia...

Question 9

The rough ER is a membranous system associated with

Accepted Answer

The rough endoplasmic reticulum (ER) is studded with ribosomes, which are responsible for protein synthesis. Therefore, the rough ER is primarily associated with ribosomes, not any of the other organelles listed.

Question 10

A typical human cell is about ____ micrometers in diameter.

Accepted Answer

A typical human cell is about 10 to 20 micrometers in diameter. Choices A, C, D, and E are too small or too large.

Question 11

Which organelle is not membrane-bound?

Accepted Answer

Ribosomes are not membrane-bound organelles; they are composed of protein and RNA and function in protein synthesis. The other options are all membrane-bound organelles.

Question 12

Which statement about the plasma membrane is not true?

Accepted Answer

The plasma membrane is the barrier that surrounds individual cells and separates the inside of the cell (intracellular fluid or ICF) from the outside environment (extracellular fluid or ECF). It is not the barrier that surrounds blood vessels and separates the blood plasma from the interstitial fluid. This is the function of the endothelial cells that line blood vessel walls.

Question 13

Select the structure that is not located in the cytosol of the cell.

Accepted Answer

The answer of Select the structure that is not located...

Question 14

Describe two benefits of a cell carrying out anaerobic glycolysis. Be sure to include the following in your

Accepted Answer

The answer of Describe two benefits of a cell carrying...

Question 15

Which of the following is contained within the nucleus?

Accepted Answer

Ribosomal subunits are produced in the nucleolus and assembled within the nucleus before being transported out to the cytoplasm. The other choices listed are not typically found within the nucleus.

Question 16

Which of the following must be at ribosome in order for protein synthesis to occur?

Accepted Answer

Protein synthesis requires both tRNA and mRNA at the ribosome. mRNA provides the template for the sequence of amino acids, while tRNA brings the appropriate amino acids to the ribosome. DNA is not directly involved in the process at the ribosome.

Question 17

Which statement about human cells is incorrect?

Accepted Answer

The answer of Which statement about human cells is incorrect?
...

Question 18

Smooth ER in liver cells

Accepted Answer

Smooth ER in liver cells has enzymes to detoxify harmful substances, such as alcohol and drugs. This is an important function in the liver's role in metabolism and detoxification. Large numbers of ribosomes are found on rough ER, and the sarcoplasmic reticulum is a specialized type of smooth ER found in muscle cells that stores calcium. Smooth ER does interact with other organelles, such as the Golgi apparatus, in the transport and modification of lipids and proteins.

Question 19

The smooth endoplasmic reticulum

Accepted Answer

The smooth endoplasmic reticulum (SER) gives rise to transport vesicles containing newly synthesized molecules wrapped in a layer of smooth ER membrane. This process is important for lipid metabolism and the detoxification of drugs and other harmful substances in the cell. The SER does not have ribosomes and is not involved in protein secretion or the formation of cisternae.

Question 20

Describe the movement of vesicles along microtubules in the cytoskeleton. Include the following in your

Accepted Answer

The answer of Describe the movement of vesicles along microtubules...

Quiz 2: Cell Physiology