Chapter 03

Instructions

Choose your answers from a-d by clicking the radio button next to each choice and then press 'Submit' to get your score.

The plasma membrane:

a) is composed entirely of lipids.

b) is mainly made up of proteins.

c) is approximately equal parts by weight of lipid and protein.

d) is composed of equal parts of carbohydrates and lipids.

The plasma membrane:

a) is largely impermeable to ions.

b) is impermeable to water.

c) has a uniform composition.

d) forms a barrier to non-polar molecules.

A cell with a large, pale nucleus:

a) is unhealthy and about to die.

b) is in a resting condition.

c) is involved in wholesale gene transcription.

d) is about to divide.

During mitosis, anaphase is associated with:

a) a halving of the chromosome number.

b) the dispersion of the nuclear membrane.

c) the separation of the sister chromatids to form the chromosomes.

d) Option d

Epithelia:

a) are composed of cells interspersed with collagen fibers.

b) line the joints.

c) always have a single cell layer.

d) functionally separate contiguous compartments.

Fatty acids:

a) can be metabolized to glucose.

b) are the largest store of energy in the body.

c) can provide energy by anaerobic metabolism.

d) enter the TCA cycle after conversion to pyruvate.