Four of the five answers are correct statements about E. coli. Select the exception
a. It grows easily in a laboratory.
b. It is a rod-shaped species of proteobacteria.
c. It is widely used in industrial biotechnology.
d. It is capable of photosynthesis.
e. It is a normal inhabitant of the gut.
d
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Within a cell, the amount of protein made using a given mRNA molecule depends partly on _____
A) the degree of DNA methylation B) the rate at which the mRNA is degraded C) the presence of certain transcription factors D) the number of introns present in the mRNA E) the types of ribosomes present in the cytoplasm
Which pair of species would be expected to have fewer genetic differences: orangutans and gorillas or gorillas and humans? Why?
A. Gorillas and humans because their common ancestor (C) is more recent than that of orangutans and gorillas (B).
B. Gorillas and humans because their common ancestor (B) is more recent than that of orangutans and gorillas (D).
C. Gorillas and orangutans because their common ancestor (C) is more recent than that of humans and gorillas (B).
D. Humans and orangutans because their common ancestor (C) is more recent than that of orangutans and gorillas (D).
At high tide a coastal plant or animal cell will be in
Estuaries are locations where rivers flow into oceans, with tidal shifts changing the salt concentrations. Plants and animals that live in estuaries face a dilemma in maintaining water balance inside their cells. During high tide they are in salt water, while at low tide they are in fresh water. A. osmosis. B. an isotonic solution. C. a hypotonic solution. D. a hypertonic solution. E. equilibrium.
Transformation, conjugation, and transduction are forms of vertical gene transfer for prokaryotes
____________________ Indicate whether the statement is true or false.