Intermediate filaments are typically _______ in diameter.
a. 5-7 nm
b. 8-11 nm
c. 16-22 nm
d. 24-26 nm
e. 32-36 nm
Answer: b. 8-11 nm
Biology & Microbiology
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The energy for active transport of substances into and out of plant cells is provided by _________.
A. Phloem B. ADP C. ATP D. Voltage E. Water
Biology & Microbiology
Approximately what percentage of the energy in one trophic level is incorporated into the next trophic level?
A. 1% B. 30% C. 100% D. 10% E. 60%
Biology & Microbiology
Except during initiation of translation, transfer RNA molecules carrying amino acids initially bind to the ribosome at the (P/A/E) site
What will be an ideal response?
Biology & Microbiology
The amniotic egg was important in the colonization of the land because it:
A) had a hard shell and membranes to prevent drying out. B) was deposited in water. C) was easy to produce. D) could hold multiple embryos.
Biology & Microbiology