Four of the five answers listed below are characteristics of most veins. Select the exception
a. blood volume reservoir
b. contain valves
c. low resistance-transport tubes
d. transport oxygen
e. low blood pressure
D
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Prokaryotes reproducing by binary fission can increase genetic variation by (select all correct choices):
A. mutation. B. DNA transfer during conjugation. C. obtaining DNA from the environment. D. obtaining DNA through viral infection. E. exchange of genetic material between homologous chromosomes.
You would not expect to find homeobox or homeobox-like genes in:
a. Drosophila. b. Arabidopsis. c. C. elegans. d. H. sapiens e. E.coli
Which of the following statements regarding the Golgi apparatus is false?
A) The Golgi apparatus works closely with the endoplasmic reticulum. B) The Golgi apparatus serves as a molecular warehouse and finishing factory. C) The Golgi apparatus decreases in size when a cell increases its protein production. D) The Golgi apparatus modifies chemicals received from the endoplasmic reticulum.
In fetal circulation, most blood is shunted away from the lungs. Why is this the case?
A) The lungs don't need any blood. B) The fetus receives oxygen at the placenta, and the lungs are not yet fully functional. C) The lungs do not form until right before birth. D) The lungs have their own circulation.