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Essential Biochemistry - Cell And Membrane Transport (Section 3)

1
Which of the following is a characteristic of active transport?
Answer
A
B
C
2
Which of the following is NOT a characteristic of eukaryotic cells?
Answer
(C)
Smaller size than prokaryotic cells
3
What are the components of the cell membrane?
Answer
A
B
C
4
Which type of cell lacks a nucleus and other membrane-bound organelles?
Answer
(B)
Prokaryotic cells
5
Which of the following is the site of lipid synthesis in a cell?
Answer
(B)
Smooth Endoplasmic Reticulum
6
What type of transport requires a protein and moves substances against their concentration gradient?
Answer
(C)
Active transport
7
What is the main function of the smooth endoplasmic reticulum?
Answer
(B)
Lipid synthesis
8
Which of the following molecules can freely diffuse across the cell membrane?
Answer
A
C
9
Which of the following are components of the cell membrane?
Answer
A
B
C
10
What process uses transport proteins to move molecules across the cell membrane?
Answer
(C)
Facilitated diffusion
11
Which organelle is responsible for ATP synthesis?
Answer
(B)
Mitochondria
12
Which of the following is a type of endocytosis?
Answer
(B)
Pinocytosis
13
What is the primary function of the rough endoplasmic reticulum (RER)?
Answer
(B)
Protein synthesis and modification
14
Which of the following structures can be found in both prokaryotic and eukaryotic cells?
Answer
A
B
15
What is a function of the ER?
Answer
A
B
C
16
What are the main differences between facilitated diffusion and simple diffusion?
Answer
(C)
Facilitated diffusion involves a transport protein and simple diffusion does not.
17
What is the function of the mitochondria?
Answer
(B)
Production of ATP
18
Which of the following is true regarding the plasma membrane?
Answer
B
C
D
19
What is the function of membrane carbohydrates?
Answer
(A)
Cell recognition
20
Which of the following is NOT a function of membrane proteins?
Answer
(D)
Energy production
21
What is the main function of the cell membrane?
Answer
(B)
Regulation of substance transport
22
Which of the following organelles is responsible for breaking down harmful substances?
Answer
(B)
Lysosomes
23
Which of the following are functions of the cytoskeleton?
Answer
A
B
D
24
Mitochondrial DNA is:
Answer
(A)
Maternal inherited
25
What is phagocytosis?
Answer
(B)
The engulfment of solid particles by a cell.
26
Which type of cell lacks a nucleus and other membrane-bound organelles?
Answer
(B)
Prokaryotic cells
27
Which of the following are found in the cell membrane?
Answer
A
B
D
28
Na+-K+ ATPase is the marker enzyme of:
Answer
(B)
Plasma membrane
29
Which of the following is a characteristic of the cell membrane?
Answer
(B)
It is selectively permeable.
30
Which of the following structures is found in BOTH prokaryotic and eukaryotic cells?
Answer
(C)
Ribosomes
31
What is the role of transport proteins in the cell membrane?
Answer
(B)
To facilitate the movement of specific molecules across the membrane.
32
Which of the following are involved in passive transport across the cell membrane?
Answer
A
B
D
33
Which of the following is a characteristic of prokaryotic cells?
Answer
(C)
Smaller size than eukaryotic cells
34
Select the subcellular component involved in the formation of ATP:
Answer
(D)
Mitochondria
35
Which of the following statements about mitochondria are true?
Answer
A
B
36
Which of the following is a function performed by the cell membrane?
Answer
(C)
Transport of molecules
37
The fluid mosaic model describes the structure of the:
Answer
(B)
Cell membrane
38
What is the role of cholesterol in the cell membrane?
Answer
(B)
To maintain membrane fluidity.
39
Which of the following is a form of passive transport?
Answer
(C)
Facilitated diffusion
40
What is the role of carbohydrates in the cell membrane?
Answer
(B)
To act as recognition sites for cell-cell interactions
41
Plasma membrane is made up of:
Answer
(A)
Lipid bilayer
42
Which of the following are found in the cytoplasm?
Answer
(C)
Organelles
43
Which of the following statements about passive transport is correct?
Answer
(C)
It includes processes like simple diffusion and facilitated diffusion.
44
What is the function of the rough endoplasmic reticulum?
Answer
(B)
Protein synthesis and modification
45
Which processes are types of passive transport?
Answer
A
B
46
What type of transport moves a substance against its concentration gradient?
Answer
(C)
Active transport
47
What is the term for the movement of water across a semipermeable membrane?
Answer
(B)
Osmosis
48
What is the process by which cells take in large molecules?
Answer
(B)
Endocytosis
49
What is the function of the cell wall?
Answer
(B)
To provide shape and support to the cell