In which of the following vessels or chambers is blood relatively high in oxygen?
a. pulmonary artery
b. right atrium
c. inferior vena cava
d. right ventricle
e. pulmonary vein
E
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A seed does NOT include
a. endosperm. b. seed coats. c. cotyledons. d. pollen grains. e. embryo.
Every glucose molecule that goes through cellular respiration, how many times is a carbon molecule fully oxidized to CO2 in the citric acid cycle?
a. 4 times b. 3 times c. 2 times d. 1 time
A disorder that has varying levels of severity is an example of ________.
Fill in the blank(s) with the appropriate word(s).
Which of these would a paleontologist most likely do to determine if a fossil represents a reptile or a mammal?
A) Look for the presence of milk-producing glands. B) Look for the mammalian characteristics of a four-chambered heart and a diaphragm. C) Use molecular analysis to look for the protein keratin. D) Examine the teeth.