Chloroplasts arose via _____.
A. endosymbiosis of euglenids
B. endosymbiosis of ?-Proteobacteria
C. endosymbiosis of cyanobacteria
D. endosymbiosis of dinoflagellates
Answer: C. endosymbiosis of cyanobacteria
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Which of the following descriptions of genetic information flow best illustrates the central dogma of biology?
A) DNA to RNA to protein B) RNA to DNA to protein C) protein to DNA to protein D) protein to RNA to DNA
Which hormone sets the body's basal metabolic rate?
A. estrogen B. insulin C. norepinephrine D. cortisol E. thyroxin
The process where cartilage is gradually replaced with bone tissue during fetal development is called ________
Fill in the blank(s) with correct word
Which of the following occurs during the Calvin cycle of photosynthesis?
A) Chlorophyll acts as an enzyme, but only in the dark. B) Carbon dioxide is converted to chemicals that can be used to make sugars. C) Nothing occurs because the plant rests in the dark. D) Water is converted to its most basic elements, hydrogen and water.