Among important crop plants, nitrogen-fixing root nodules are most commonly an attribute of
a) wheat.
b) cabbage and other members of the brassica family.
c) legumes.
d) corn.
e) members of the potato family.
Ans: c) legumes.
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Aminoglycoside antibiotics
A. inhibit folic acid biosynthesis. B. inhibit cell wall synthesis. C. bind to bacterial DNA polymerase. D. bind to the 30S ribosomal subunit.
The ____ phylum has about 550 known living species of vascular, seed-bearing plants, the most among gymnosperms
Many of them have needlelike leaves with thick cuticles and sunken stomata, and are thus adapted to dry conditions.
a. Cycadophyta b. Anthophyta c. Gnetophyta d. Coniferophyta e. Ginkgophyta
A person who inherited the allele combination AA is ____
a. homozygous dominant b. homozygous recessive c. heterozygous d. codominant e. dominant
Which cell structure is important in adherence?
a. cell wall a. fimbria b. teichoic acid c. lipopolysaccharide