Which kingdom contains "extremophiles"?
a. eubacteria
b. archaebacteria
c. fungi
d. protista
Ans: b. archaebacteria
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On which portion of the hemoglobin molecule does carbon dioxide bind?
a. protein chain b. cholesterol side chains c. iron in the cytoplasm d. heme group e. nuclear side chains
A survivorship curve in which most individuals die late in life is a type ________ curve.
A. IV B. I C. 0I D. III E. II
"She is a carrier of the cystic fibrosis trait." This statement acknowledges that this person
A. is homozygous for the trait. B. is heterozygous for the trait. C. may be trisomic. D. has two recessive alleles.
In humans, what is brown adipose tissue used for?
a. for controlling blood pressure b. for digesting fats c. for nonshivering thermogenesis d. for cooling the body when it is exposed