Questions from Conceptual Biology

Q: The ________ attaches to the pelvic girdle. a. radius

The ________ attaches to the pelvic girdle. a. radius b. sternum c. femur d. tibia

Q: In sarcomeres, phosphate-group transfers from ATP activate ______.

In sarcomeres, phosphate-group transfers from ATP activate ______. a. actin c. troponin b. myosin d. Z bands

Q: A sarcomere shortens when ________. a. thick filaments shorten

A sarcomere shortens when ________. a. thick filaments shorten b. thin filaments shorten c. both thick and thin filaments shorten d. none of the above

Q: A motor unit is _______. a. a muscle and the

A motor unit is _______. a. a muscle and the bone it moves b. two muscles that work in opposition c. the amount a muscle shortens during contraction d. a motor neuron and the muscle fibers it controls...

Q: ____ from a motor neuron excites a muscle fiber. a

____ from a motor neuron excites a muscle fiber. a. Ach b. GABA c. calcium d. phosphate

Q: ______ increase the surface area of some epithelial cells. a

______ increase the surface area of some epithelial cells. a. Microfilaments b. Microvilli c. Gap junctions d. Adhering junctions

Q: Tears are an _______ secretion released by specialized _______ tissue cells.

Tears are an _______ secretion released by specialized _______ tissue cells. a. endocrine/epithelial b. endocrine/connective c. exocrine/epithelial d. exocrine/connective

Q: Cancers most commonly arise in tissue. a. epithelial

Cancers most commonly arise in tissue. a. epithelial b. muscle c. nervous d. connective

Q: The most abundant protein in your body is ______. a.

The most abundant protein in your body is ______. a. melanin b. elastin c. collagen d. keratin

Q: The Gulf Stream is a current that flows ______ along the _______

The Gulf Stream is a current that flows ______ along the _______ coast of the United States. a. north to south; east b. north to south; west c. south to north; east d. south to north; west