What is the structure and function of a helix-loop-helix protein?
What will be an ideal response?
Ans: A helix-loop-helix protein has a motif that forms two amphipathic alpha helices separated by a linker (or loop). This allows proteins to dimerize.
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The proteins associated with the light-dependent reactions of photosynthesis are located ____.
A. on the outer membranes of the chloroplast B. in the stroma C. on the thylakoid membrane D. throughout the cytoplasm of plant cells E. in the thylakoid compartment
The sequence of eras beginning with the earliest era and processing forward to the most recent era in the geologic time scale is
A. Archean - Mesozoic - Cenozoic. B. Cenozoic - Archean - Mesozoic. C. Archean - Paleozoic - Proterozoic. D. Mesozoic - Cenozoic - Paleozoic. E. Paleozoic - Mesozoic - Cenozoic.
An inactivating mutation in the progesterone receptor gene would likely result in _____
A) the absence of secondary sex characteristics B) the inability of the uterus to support pregnancy C) enlarged and hyperactive uterine endometrium D) the absence of mammary gland development
What is the difference between a decomposer and a detritivore?
What will be an ideal response?