An ABC transporter:a
is a type of water channel.
b. uses the energy of ATP to transport solutes.
c. uses gated channels to transport ADP.
d. is present in kidney tubules and prevents dehydration.
e. is a type of porin.
B
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According to the latest research, what statement best describes the first eukaryote?
a. It lacked a nucleus, a mitochondrion, or a chloroplast. b. It lacked a nucleus, but contained a mitochondrion and a chloroplast. c. It contained a nucleus and a chloroplast, but not a mitochondrion. d. It contained a nucleus and a mitochondrion, but not a chloroplast. e. It contained a nucleus, a mitochondrion, and a chloroplast.
What type of reproduction produces genetic clones of a parent?
a. sexual reproduction b. asexual reproduction c. hermaphrodites d. external fertilization e. internal fertilization
A prokaryote that occupies a habitat that is characterized by extreme heat (above 50 degrees Celsius) is a(an):
a. Thermophile b. Acidophile c. Halophile d. Basophile e. Hydrophile
Antibodies ________
A) are shaped like the letter B B) are generalists in that any antibody can bind to any antigen C) assist in destroying particular antigens D) are produced by T cells