Blood flow slows in capillaries due to their ________.

A. valves
B. small diameters
C. large collective cross-sectional area
D. small collective cross-sectional area
E. short lengths


Answer: C

Biology & Microbiology

You might also like to view...

An intermediate in the creation of DNA nucleotides is ribose 5-phosphate, shown here. What enzymatic activity is needed to ready ribose 5-phosphate for use in DNA nucleotide synthesis?

A. DNase B. reductase C. oxygenase D. RNase E. RNA polymerase

Biology & Microbiology

What is the total number of possible outcomes that two gametes, both of which are heterozygous for both of their alleles, can produce?

a. 4 outcomes b. 12 outcomes c. 14 outcomes d. 16 outcomes e. 32 outcomes

Biology & Microbiology

What term describes regulation of the trp operon that can occur even in trpR? mutants, thus suggesting that the mechanism is repressor-independent?

A) modulation B) derepression C) attenuation D) amplification

Biology & Microbiology

Which of the following is NOT a characteristic of amphibians?

A. They have lungs. B. They have a cartilaginous skeleton. C. They are ectothermic. D. They have a three-chambered heart. E. They have vertebrae.

Biology & Microbiology