Chemicals that are poisonous to specific cell types are said to be
(a) hazardous.
(b) cytotoxic.
(c) allelochemicals.
(d) bioactive.
(a) hazardous.
Biology & Microbiology
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DNA is recognized as a left-handed molecule
Indicate whether the statement is true or false
Biology & Microbiology
The bark of a woody stem contains:
1.xylem
2.parenchyma
3.vascular cambium
4.phloem
If the mitochondrion is the result of endosymbiosis, what membrane of the mitochondrion represents the engulfing vesicle?
A. matrix B. cristae C. the outer mitochondrial membrane D. grana E. vacuole
Biology & Microbiology
The McDonald–Kreitman test:
a. compares substitution rates between and within species. b. compares substitution rates across two time scales. c. compares substitution rates across genes. d. A and B. e. All of the above.
Biology & Microbiology