Incorrect Practice Questions

Question 1

What is the main function of the endomembrane system?

Answer 1

Building and modifying lipids and secretory proteins

Question 2

What allows the ECM to resist compression?

Answer 2

Proteoglycans

Question 3

Which of the following is NOT correct? Plasmodesmata:
A) have continuous lignin coating
B) are small enough to prevent organelle movement
C) allow the free exchange of small molecules
D) are associated with ER

Answer 3

A

Question 4

During energy generation in the mitochondria hydrogen ions (H+) are pumped from the…

Answer 4

Mitochondrial matrix into the intermembrane space

Question 5

What best describes the relationship between photosynthesis and cellular respiration?

Answer 5

ATP molecules are produced by photosynthesis and used by cellular respiration.

Question 6

Which of the following statements concerning the nucleus is NOT correct?
A) nuclear pores allow molecules to move in or out of the nucleus
B) the nucleus is surrounded by two phospholipid bilayers
C) the nuclear lamina is composed of intermediate filaments
D) euchromatin is the name given to newly synthesised DNA

Answer 6

D

Question 7

Each sister chromatid in mitosis contains?

Answer 7

1 double stranded copy of their DNA molecule

Question 8

Crossing over between homologous chromosomes occurs during meiosis in:

Answer 8

Prophase 1

Question 9

What are the major functions that membrane proteins perform?

Answer 9

Cell to cell recognition

Signal transduction

Intercellular joining

Linking cytoskeleton and ECM

Question 10

What is the function of the sER?

Answer 10

Synthesise lipids (including steroids), metabolise carbohydrates, detoxify drugs and alcohol or store calcium ions.

Question 11

What is the function of transport vesicles?

Answer 11

Carries products of ER and Golgi apparatus to various locations

Question 12

What is the function of the plasma membrane?

Answer 12

To act as a selective barrier that regulates the passage of material into and out of the cell

Question 13

What is the function of intermediate filaments?

Answer 13

Reinforce cell shape and anchor nucleus and certain other organelles

Formation of nuclear lamina

Question 14

What is the structure of microtubules

Answer 14

Hollow tubes approximately 25nm in diameter, composed of tubulin subunits

Question 15

Cellular respiration can BEST be described as:
A) using energy released from breaking high energy covalent bonds in organic molecules to make ATP

B) taking electrons from food and giving them to phosphate to make ATP

C) taking electrons from food and giving them to oxygen to make water, and using the energy released to make ATP.

D) converting higher energy organic molecules to lower energy organic molecules and using the energy released to make ATP.

Answer 15

C

Question 16

Which one of the following statements concerning the mitochondria is not correct?
A)The number of mitochondria within a cell may change to meet energy demand

B) The mitochondria into membrane space has a low pH

C) Electron transport and chemiosmosis
occurs within the mitochondrial matrix

D) ATP synthesis is present on the in a mitochondrial membrane

Answer 16

C

Question 17

List three reasons why a cell requires energy:

Answer 17

Mechanical work
Transport
Make new materials