The sequence of amino acids is the ____
structure of proteins.
a. primary
b. secondary
c. tertiary
d. quaternary
e. stereo
A
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A new species of mammal is discovered deep in the Antarctic. This mammal contains an organ that does not seem to
be homologous to any other known organ. Upon examination, it appears that this organ is responsible for secreting hormones necessary for regulating subcutaneous fat levels to regulate body temperature. To which system does this new organ most likely belong?
a. digestive system b. integumentary system c. immune system d. endocrine system e. nervous system
Which is an advantage of binary fission over eukaryotic cell division?
a. It has more robust checkpoints. b. It leads to fewer genetic mutations. c. It is less complicated and faster. d. It allows for more genetically-diverse offspring.
Water stops diffusing into a plant cell from the
soil when
a. turgor pressure inside the plant cell decreases. b. turgor pressure between the plant cell and soil is equal. c. turgor pressure inside a plant cell is at a maximum. d. there is no turgor pressure inside the cell or within the soil. e. more than one of these situations
The cells that become eggs that a woman ovulates at age 40 were initially produced
A. at puberty. B. at her birth. C. when she was a fetus. D. about a month before ovulation.