Macrocystis can grow up to ____ centimeters per day

a. 10
b. 15
c. 35
d. 50
e. 100


D

Biology & Microbiology

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Which of the following bacteria is least likely to be the cause of septic shock?

A) Escherichia coli B) Haemophilus influenzae C) Mycoplasma pneumoniae D) Neisseria meningitidis

Biology & Microbiology

Biological membranes are held together mainly by

a. hydrogen bonds between lipid molecules. b. hydration layers over lipid molecules. c. exclusion of the nonpolar regions of lipids by water. d. hydrogen bonds between water molecules. e. surface tension at the interface between layers of water molecules.

Biology & Microbiology

Two bird species overlap in a hybrid zone. They are isolated by a slight difference in the male songs and by the females' tendency to select males with the "correct" song. Hybrid offspring tend to have reduced fertility compared to either of the parent

species. What effect might natural selection have in this situation? A) Natural selection might favor males with less distinctive calls and/or females that are less "choosy." B) Natural selection might favor males with more distinctive calls and/or females that are more "choosy." As a result, the reproductive barrier between the two species could be reinforced. C) Natural selection could lead to the hybrid species taking over and eliminating the weaker parent species. D) Natural selection could lead to the stronger of the two species taking over and eliminating the other species.

Biology & Microbiology

Complications from untreated gonorrhea in females include

a. pelvic inflammatory disease. b. sterility. c. painful infection of the urethral canal. d. both a and b.

Biology & Microbiology