Cell Structure And Compartments

Question: An organism’s first line of defense against attack by an invader such as a virus or bacterium is usually
[A].

to flee or hide

[B].

its body wall

[C].

a specific immune response

[D].

a nonspecific immune response

Answer: Option B

Explanation:

No answer description available for this question.

Question: Which of the following two organelles look most alike structurally?
[A].

Nucleus and vesicle

[B].

Golgi apparatus and smooth endoplasmic reticulum ER

[C].

Vacuole and cytoskeleton

[D].

Lysosome and chloroplast

Answer: Option B

Explanation:

No answer description available for this question.

Question: Which of the following organelles is directly connected to the outer membrane of the nucleus in a eukaryotic cell?
[A].

Mitochondrion

[B].

Lysosome

[C].

Golgi apparatus

[D].

Endoplasmic reticulum

Answer: Option D

Explanation:

No answer description available for this question.

Question: Eukaryotic cells are more efficient than prokaryotes because their internal compartmentalization
[A].

makes each compartment nutritionally independent of all others

[B].

allows for specialization through the subdivision of particular tasks

[C].

allows for specialization through merging of different tasks

[D].

reduces overall cell size

Answer: Option B

Explanation:

No answer description available for this question.

Question: According to the fluid mosaic model of cell membranes,
[A].

the most common type of molecules in the membrane are proteins

[B].

basic membrane structure results from how the proteins interact with water

[C].

the membrane is a highly mobile mixture of phospholipids and proteins

[D].

the unique properties of cell types are determined by their phospholipids

Answer: Option C

Explanation:

No answer description available for this question.

Question: Clearly defined nucleus, mitochondria in a large central vacuole and chloroplasts, indicate the group of organisms from
[A].

bacteria

[B].

fungi

[C].

plants

[D].

animals

Answer: Option C

Explanation:

No answer description available for this question.

Question: Microtubules, motor proteins, and actin filaments are all part of
[A].

the mechanism of photosynthesis that occurs in chloroplasts

[B].

the rough ER (endoplasmic reticulum) in prokaryotic cells

[C].

the cytoskeleton of eukaryotic cells

[D].

the process that moves small molecules across cell membranes

Answer: Option C

Explanation:

No answer description available for this question.

Question: In which of the following cell organelles, it is expected to find the biochemical reactions that harness energy from the breakdown of sugar molecules to synthesize large amounts of ATP?
[A].

Lysosome

[B].

Vesicles

[C].

Mitochondria

[D].

Plasma membrane

Answer: Option C

Explanation:

No answer description available for this question.

Question: Lysosomes are specialized vesicles in __________ that contain digestive enzymes for the breakdown of food. A related organalle known as a vacuole, which is found in __________ , also contains enzymes but in addition may act as a storage organelle for nutrients or water.
[A].

animals; plants and fungi

[B].

plants; animals and fungi

[C].

plants and fungi; animals

[D].

animals and plants; fungi

Answer: Option A

Explanation:

No answer description available for this question.

Question: Which of the following statements about prokaryotes is false?
[A].

Prokaryotic cells concentrate important materials for the cells survival

[B].

The substance known as cytosol is found within the bacterial nucleus

[C].

Prokaryotic cells are much smaller than most eukaryotic cells

[D].

Ancient prokaryotes may have given rise to some eukaryotic organelles

Answer: Option B

Explanation:

No answer description available for this question.