Photosynthetic pigments in bacteria are located in the:
A. cell wall.
B. nuclei.
C. plasma membrane.
D. chloroplasts.
E. plasmids.
Answer: C
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What embryo-produced hormone maintains progesterone and estrogen secretion by the corpus luteum through the first trimester of pregnancy?
A) luteinizing hormone (LH) B) follicle-stimulating hormone (FSH) C) progesterone D) human chorionic gonadotropin (hCG) E) gonadotropin-releasing hormone (GnRH)
Which of the following types of sensory receptors does not generate an action potential in response to its stimulus?
A. thermoreceptors B. nociceptors C. chemoreceptors D. mechanoreceptors
A set of SNPs close together on a chromosome is called a(n) ____________________
Fill in the blank(s) with correct word
How many "turns" are present in crambin?
a. 1 b. 2 c. 3 d. 4