The symplast is the continuum of living cytoplasm.

A bacterial cell wall is made up of ______________.

A) N-acetyl glucosamine
B) N-acetyl muramic acid
C) N-acetyl amino acids
D) N-acetyl glucosamine, N-acetyl muramic acid, and amino acids
E) N-acetyl glucosamine, N-acetyl muramic acid, and amino acids and acidic acids

Sponges are believed to have arisen from the choanoflagellates because they possess:

A) amebocytes
B) collar cells
C) spongin
D) spicules
E) oscula

What occurs when glucose molecules are broken apart during cellular respiration?

A) The heat produced is used to drive biological reactions.
B) Oxygen is released and used as an energy source.
C) The energy released is used in ATP synthesis.
D) ATP is converted into ADP.
E) ADP is released as a waste product.

Proteolytic processing of eukaryotic proteins involves:

A) removal of a portion of the polypeptide chain from an inactive protein precursor
B) the addition of one or more functional groups to a precursor protein
C) the removal of one or more functional groups from a precursor protein
D) removal of histones
E) removing the cap and tail of a newly synthesized protein

The eye movement called ________ is a tracking mechanism that occurs when a person is reading.

A) vertigo
B) nystagmus
C) saccades
D) none of the above

What hormone, secreted by the stomach, increases the secretion of acids by cells of the stomach lining?

A) amylase
B) gastrin
C) pepsin
D) pepsinogen
E) insulin

a general term for a disease-causing agent

A) emerging disease
B) bacteriophage
C) vector
D) retrovirus
E) pathogen

The origin of a muscle is found on the bone that moves.

Which part of the blastocyst will develop into the human embryo?

A) archenteron
B) blastopore
C) chorion
D) trophoblast
E) inner cell mass