In meiosis homologous chromosomes separate during
A. prophase I.
B. prophase II.
C. anaphase I.
D. metaphase I.
E. anaphase II.
C. anaphase I.
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The cytoplasmic membrane of both eukaryotes and prokaryotes functions to
A. form endoplasmic reticulum. B. produce energy. C. regulate movement of molecules that enter and leave the cell. D. form lysosomes and Golgi apparatus.
Which of the following is a difference between a purine and a pyrimidine?
a. Purines have a single ring structure. b. Pyrimidines cannot bind phosphate. c. Pyrimidines are smaller in size. d. Purines are only found in RNA.
The term used to describe partially digested food in the stomach is ____
a. chyme b. bolus c. rugae d. gastric juice e. feces
Which brain structure maintains homeostasis and influences blood pressure, heart rate, digestive activity, breathing rate, and body temperature?
A) hypothalamus B) medulla oblongata C) thalamus D) cerebellum