Question 1

As a molecule moves through the plasma membrane it passes through

Accepted Answer

A)   a hydrophobic layer of phospholipid heads then a hydrophilic layer of phospholipid tails and then another hydrophobic layer of phospholipid heads.
B)   a hydrophobic layer of phospholipid tails then a hydrophilic layer of phospholipid heads and then another hydrophobic layer of phospholipid tails.
C)   a hydrophilic layer of phospholipid heads then a hydrophobic layer of phospholipid tails.
D)   a hydrophilic layer of phospholipid heads then a hydrophobic layer of phospholipid tails and then another hydrophilic layer of phospholipid heads.
E)   a hydrophobic layer of phospholipid tails and then a hydrophilic layer of phospholipid heads.F) C) and E)
G) A) and B)

Question 2

The nucleus is a double membrane that encloses the DNA. Inside the nucleus the DNA acts as the template to produce mRNA and ribosomes; to exit the nucleus these molecules must

Accepted Answer

A)   diffuse through the double membrane into the cytoplasm.
B)   pass through carrier proteins which use ATP to transport the molecules.
C)   attach to carrier molecules that carry them through the membrane.
D)   pass through pores that span both membranes.
E)   be transported across the two membranes by means of vesicles.F) C) and D)
G) A) and D)

Question 3

Without a centrosome, cells would not be able to

Accepted Answer

A)   move organelles around the cytoplasm.
B)   manufacture actin filaments.
C)   manufacture proteins.
D)   produce ATP.
E)   break down carbohydrate.F) A) and B)
G) A) and E)

Exam 4: Inside the Cell

As a molecule moves through the plasma membrane it passes through

Correct Answer
verified

Without a centrosome, cells would not be able to

Correct Answer
verified

The nucleus is a double membrane that encloses the DNA. Inside the nucleus the DNA acts as the template to produce mRNA and ribosomes; to exit the nucleus these molecules must

Correct Answer
verified

Exam 4: Inside the Cell

As a molecule moves through the plasma membrane it passes through

Correct AnswerverifiedShow Answer

Without a centrosome, cells would not be able to

Correct AnswerverifiedShow Answer

The nucleus is a double membrane that encloses the DNA. Inside the nucleus the DNA acts as the template to produce mRNA and ribosomes; to exit the nucleus these molecules must

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified