Biochemistry

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.