What is the major difference between the endoskeleton and the exoskeleton?

A) The endoskeleton is capable of growth.
B) The endoskeleton permits movement.
C) The endoskeleton contains calcium.
D) The endoskeleton is molted more frequently.
E) The endoskeleton provides support.

Which type of RNA carries the protein-building message?

A) messenger RNA
B) nuclear RNA
C) ribosomal RNA
D) transfer RNA
E) structural RNA

Gladys had a stroke that has left her unable to detect certain sensations of her face. Based on this information, which region of the brain is most likely affected?

A) Parietal lobe, in middle region of the postcentral gyrus
B) Parietal lobe, in the most inferior region of the postcentral gyrus
C) Frontal lobe, in middle region of the precentral gyrus
D) Frontal lobe, in most inferior region of the precentral gyrus

process by which one generation replaces another

A) development
B) reproduction
C) photosynthesis
D) growth
E) homeostasis

Which developmental stage occurs first?

A) cleavage
B) fetus
C) gastrula
D) zygote
E) blastula

An example of a short-day plant is

A) poinsettia.
B) sunflower.
C) spinach.
D) coleus.
E) corn.

Which are composed of actin?

A) all myofilaments
B) thin filaments
C) thick filaments
D) none of the above

Ossification that involves replacing cartilage with bone is ________.

A) intramembranous
B) endochondral
C) interstitial
D) appositional
E) osteomalacia