Prokaryotic cells divide by a process known as
A. conjugation.
B. mitosis.
C. binary fusion.
D. binary fission.
D
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Florists often create brightly colored flowers by immersing the stems in colored water. Which
cells are primarily responsible for this color change?
a. phloem b. xylem c. xylem and phloem d. neither xylem nor phloem
Creutzfeldt-Jalob disease is one of the diseases caused by infectious proteins called
____________________. Fill in the blank(s) with the appropriate word(s).
Sperm and egg cells contain half the number of chromosomes found in somatic cells, and are referred to as ________, which comes from the Greek word haploos, meaning "single."
Fill in the blank(s) with correct word
Each of the following is a voltage-gated Na+ channel property except
A) opens rapidly when stimulated. B) closes rapidly in absence of stimulus. C) opens to a variable extent depending on how much the stimulus voltage exceeds the threshold voltage. D) has a voltage sensor helix that controls channel gating. E) can be inactivated by the inactivating particle part of the channel protein.