The structure indicated by the letter "B" above represents _____
a. actin
b. a myofibril
c. myosin
d. the sarcoplasmic reticulum
e. a muscle fiber
ANSWER: d
You might also like to view...
The uptake of DNA released from a cell is ________, while transfer of DNA with cell-to-cell contact would most likely result in ________
A) transformation / conjugation B) transduction / conjugation C) conjugation / transformation D) transformation / transduction
Due to countercurrent flow in fish gills, __________
with the __________ oxygen concentration is always in contact with __________ containing __________ oxygen. a. blood; most; water; less b. water; least; blood; less c. water; greatest; blood; greater d. blood; greatest; blood; less e. water; greatest; water; less
Which of the following organelles contains protein-digesting enzymes that break down proteins to amino acids?
A. chloroplasts B. lysosomes C. ribosomes D. mitochondria
Lamarck's hypothesis that traits acquired during the lifetime of an individual are passed on to progeny:
a. was interesting, reasonable, and based on an idea that was universally accepted by scientists and nonscientists alike. b. connected evolutionary change to environmental fit. c. Both of the above. d. None of the above.