Which of the following do green algae and plants NOT have in common?
A. plastids
B. chlorophyll a
C. chlorophyll b
D. beta-carotene
E. heterocysts
E. heterocysts
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The ureters drain urine into the
a. renal pelvis. b. cecum. c. urinary bladder. d. small intestine.
A set of genetic markers located close together on a single ____________________ is called a haplotype. What will be an ideal response?
DNA nucleotide sequences that indicate when RNA polymerase should finish making an RNA molecule are called
A. enhancer sequences. B. elongation sequences. C. genetic recombinant sequences. D. termination sequences.
Cytotoxic T-cells
A. lack specificity for a target cell. B. secrete interleukin-2 to stimulate B and T-cells. C. stimulate B-cell proliferation. D. secrete granzymes and perforins that damage target cells. E. All of these choices are correct.