Question 1

Which is NOT a function of the cytoskeleton?
A) maintains a cell's shape
B) anchors organelles in place within a cell
C) allows cell and its organelles to move
D) secretes the calcium for bone tissue
E) allows the formation of pseudopodia

Accepted Answer

All of the above are functions of the cytoskeleton except that it does not secrete the calcium for bone tissue.

Question 2

In plants,chloroplasts are necessary for
A) respiration.
B) secretion.
C) photosynthesis.
D) storage.
E) cell movement.

Accepted Answer

Chloroplasts carry out photosynthesis for plant cells.

Question 3

Which organelle has a 9 + 0 pattern of microtubules?
A) cilia
B) flagella
C) centriole
D) kinesin
E) microtubule

Accepted Answer

Centrioles have a 9 + 0 pattern of microtubule triplets. Cilia and flagella have a 9 + 2 pattern. Kinesin is a motor molecule.

Question 4

In a certain group of people,males are more subject to respiratory infections and are sterile.The most likely explanation for this disease is malfunctioning
A) lysosomes.
B) intermediate filaments.
C) actin filaments.
D) rough endoplasmic reticulum.
E) cilia and flagella.

Accepted Answer

The respiratory system uses cilia to keep the passageways clear while sperm use flagella to swim. There is most likely a problem with microtubule formation.

Question 5

In a person with a mitochondrial disease such that mitochondria do not produce enough energy for the cell,which organs would likely be most affected?
A) muscles
B) liver
C) skin
D) stomach
E) ovaries/testes

Accepted Answer

High energy demand tissues include muscles, the central nervous system, and the eye. Although the other organs would be affected, the high energy demand tissues would be most noticeably affected earlier.

Question 6

Mitochondria are bounded by a double membrane.The inner filled space is called the matrix which contains ______________ that break down carbohydrate products,releasing _______________ to be used for ATP production.
A) DNA/energy
B) ribosomes/carbon dioxide
C) RNA/energy
D) enzymes/energy

Accepted Answer

The matrix of mitochondria contain enzymes that break down carbohydrates releasing energy that is used to synthesize ATP. Although mitochondria contain DNA, RNA, and ribosomes, these do not break down carbohydrates.

Question 7

Microtubules
A) are composed mostly of lipid.
B) form a spindle that distributes chromosomes in an orderly manner.
C) may be associated with metabolism.
D) are found in the nucleus.
E) are composed of actin.

Accepted Answer

The function of microtubules is to form a spindle that distributes chromosomes in an orderly manner. They are composed of the protein tubulin and are found throughout the cytoplasm.

Question 8

Which of the following would be considered evidence that chloroplasts are involved in photosynthesis?
A) Isolated chloroplasts give off oxygen when exposed to sunlight.
B) Plants that are green contain chloroplasts.
C) Both plants and algae have chloroplasts.
D) Plants have both chloroplasts and mitochondria.
E) Chloroplasts contain thylakoids which are stacked in structures called grana.

Accepted Answer

While all of the statements are true, only the statement that isolated chloroplasts give off oxygen when exposed to sunlight applies to photosynthesis. In photosynthesis, solar energy results in photosynthesis which gives off oxygen.

Question 9

During photosynthesis,solar energy is converted to chemical energy by the chloroplasts.The process is represented by:
A) carbohydrate + oxygen $\rarr$ carbon dioxide + water + energy
B) carbohydrate + carbon dioxide $\rarr$ oxygen + water + energy
C) solar energy + oxygen + water $\rarr$ carbohydrate + oxygen
D) solar energy + carbon dioxide + water $\rarr$ carbohydrate + oxygen
E) solar energy $\rarr$ carbohydrate + oxygen

Accepted Answer

The formula for photosysnthesis is solar energy + carbon dioxide + water goes to carbohydrate + oxygen. This occurs in the chloroplast.

Question 10

Kinesin and dynein are associated with
A) microtubules.
B) actin filaments.
C) Golgi apparatus.
D) intermediate filaments.
E) endoplasmic reticulum.

Accepted Answer

Kinesin and dynein are motor molecules associated with microtubules.

Question 11

Centrioles
A) consist of 9 + 2 pattern.
B) are composed of microtubule triplets.
C) carry on cellular respiration.
D) are found in plant cells.
E) are composed of actin.

Accepted Answer

Centrioles are composed of a 9 + 0 pattern of microtubule triplets. They are not found in plant cells and are not composed of actin. They are part of the cytoskeleton.

Question 12

If cells were moved to a low-gravity environment,such as in space exploration,a change would most likely be expected in the
A) nucleus and the genetic process.
B) chloroplast and energy capture.
C) cytoskeleton.
D) vacuoles and lysosomes.
E) mitochondrion and energy release.

Accepted Answer

Since the cytoskeleton is responsible for cellular movement, it would be most affected by a low-gravity environment.

Question 13

Which organelle will use up oxygen and give off carbon dioxide and water?
A) lysosomes
B) Golgi apparatus
C) mitochondria
D) chloroplasts
E) endoplasmic reticulum

Accepted Answer

Oxygen is used up and carbon dioxide and water are given off during photosynthesis. Chloroplasts carry out photosyntehsis. The other organelles have other functions.

Question 14

Thylakoids and cristae are respectively structures of
A) lysosomes and the endoplasmic reticulum.
B) the nucleus and nucleolus.
C) chloroplasts and mitochondria.
D) mitochondria and chloroplasts.
E) the cell wall and the plasma membrane.

Accepted Answer

Thylakoids are found in chloroplasts while cristae are found in mitochondria.

Question 15

Since cyanobacteria do not contain chloroplasts and yet they photosynthesize,chloroplasts are not required for photosynthesis.

Accepted Answer

Although they do not have chloroplasts, cyanobacteria do have thylakoids. Therefore thylakoids are required for photosynthesis.

Question 16

Brock's father has inherited a mitochondrial disease.Is Brock in danger of also having this disease?

Accepted Answer

The answer of Brock's father has inherited a mitochondrial disease.Is...

Question 17

Which organelle has 13 rows of tubulin dimers around an empty central core?
A) flagella
B) microtubules
C) actin filaments
D) intermediate filaments
E) cilia

Accepted Answer

Microtubules are composed of 13 rows of tubulin dimers, surrounding what appears in electron micrographs to be an empty central core.

Question 18

Which organelle will give off oxygen and use up carbon dioxide in plants?
A) Golgi apparatus
B) rough endoplasmic reticulum
C) lysosomes
D) mitochondria
E) chloroplasts

Accepted Answer

Chloroplasts give off oxygen and use up carbon dioxide during photosynthesis. Mitochondria will give off carbon dioxide and use up oxygen during respiration. The other organelles have different functions.

Question 19

Which of these is present in plant,but not animal,cells?
A) nucleus
B) centrioles
C) cell membrane
D) Golgi apparatus
E) chloroplasts

Accepted Answer

Plants have chloroplasts but animal cells do not. Both plant and animal cells have a cell membrane, Golgi apparatus, and nucleus. Only animal cells have centrioles.

Question 20

When viewed through a microscope,one characteristic of living cells is that their internal structures move.What organelles are most directly responsible for this motion we see?
A) cell membrane and nucleus
B) ribosomes and endoplasmic reticulum
C) centrioles and cell wall
D) mitochondria and cytoskeleton
E) chloroplasts and lysosomes

Accepted Answer

Mitochondria provide the energy for organelle movement, while the cytoskeleton provide the structures needed for movement. The other organelles are involved in different functions.

Quiz 3: Cell Structure and Function

Which is NOT a function of the cytoskeleton?

In plants,chloroplasts are necessary for

Which organelle has a 9 + 0 pattern of microtubules?

In a certain group of people,males are more subject to respiratory infections and are sterile.The most likely explanation for this disease is malfunctioning

In a person with a mitochondrial disease such that mitochondria do not produce enough energy for the cell,which organs would likely be most affected?

Mitochondria are bounded by a double membrane.The inner filled space is called the matrix which contains that break down carbohydrate products,releasing _ to be used for ATP production.

Microtubules

Which of the following would be considered evidence that chloroplasts are involved in photosynthesis?

During photosynthesis,solar energy is converted to chemical energy by the chloroplasts.The process is represented by:

Kinesin and dynein are associated with

Centrioles

If cells were moved to a low-gravity environment,such as in space exploration,a change would most likely be expected in the

Which organelle will use up oxygen and give off carbon dioxide and water?

Thylakoids and cristae are respectively structures of

Since cyanobacteria do not contain chloroplasts and yet they photosynthesize,chloroplasts are not required for photosynthesis.

Brock's father has inherited a mitochondrial disease.Is Brock in danger of also having this disease?

Which organelle has 13 rows of tubulin dimers around an empty central core?

Which organelle will give off oxygen and use up carbon dioxide in plants?

Which of these is present in plant,but not animal,cells?

When viewed through a microscope,one characteristic of living cells is that their internal structures move.What organelles are most directly responsible for this motion we see?