Which of the following is (are) found in many veins that help direct blood flow in one direction only: toward the heart?
A) lymph nodes B) pericardium C) myocardium D) valves
Answer: D
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Which of these is the site for protein modification?
a. nucleus b. cytoskeleton c. mitochondria d. rough endoplasmic reticulum e. nucleolus
What would a species that has a high number of alleles for many genes that are distributed throughout the population have?
A) low genetic variability B) high genetic drift C) high genetic variability D) a large amount of inbreeding depression
How do bony fish regulate buoyancy?
A) With an air-filled swim bladder B) With a large, oil-filled liver C) By constantly swimming at an upwards angle D) Through the calcium in the bones, which makes the skeleton lighter than the water
Which of the following processes requires oxygen?
A) The Krebs cycle B) Glycolysis C) The ETC D) Fermentation