How many phases are there in the eukaryotic cell cycle?
a. 1
b. 2
c. 3
d. 4
e. 5
e
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An organism grown in a high nutrient liquid broth to high turbidity always appears to produce a blue pigment and even when a large inoculum is transferred to a nutrient rich agar plate it appears blue
When the researcher noticed it never appears blue when very small colonies were grown in low nutrient agar plates. What is the most plausible conclusion? A) Large populations enabled the differentiation of a subpopulation of cells that created the blue pigment. B) Only high nutrient conditions provide enough energy for cells to produce this secondary metabolite that appears blue. C) The blue pigment production is linked to quorum sensing. D) The strong gradient from very high to low nutrient bioavailability induces production of the blue metabolite.
A molecule of RNA has 99 phosphodiester bonds connecting ________ ribonucleotides.
Fill in the blank(s) with the appropriate word(s).
During photosynthesis in a leaf, sugars are loaded into the sieve tube by , followed by to move water which increases pressure.
A. osmosis; gravity B. gravity; active transport C. active transport; osmosis D. osmosis; facilitated diffusion E. facilitated diffusion; osmosis
Homoplasies are similarities that result from shared ancestry
1.True 2.False