List one of the two geographical characteristics of most deserts
What will be an ideal response?
The two characteristics are their location at approximately 30° N and 30° S latitudes and in the rain shadow of large mountain ranges.
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In a certain breed of chicken, an incomplete dominant gene controls color. The homozygous black (BB), when crossed
with the homozygous splashed-white (bb), produces an intermediate gray color pattern referred to as blue. A second gene controls the shape of the comb. The dominant allele (R) produces rose, whereas the recessive allele (r) produces single. Give the F1 and F2 genotypic and phenotypic ratios of a cross between a true-breeding black with a single comb and a true-breeding splashed-white with a rose comb. What will be an ideal response?
Which of the following is a waste product of photosynthesis?
A) CO2 B) H2O C) O2 D) All of the above
Many diseases are the result of a problem with cell signaling. Which of the following diseases BEST exemplifies this fact?
a. a specific type of cancer, which is caused by a truncated receptor that becomes stuck in the activated form. b. congestive heart failure, which is caused by chronic high blood pressure due to excessive sodium intake c. familial hypercholesterolemia (high cholesterol in the blood), which is caused by a decrease in the number of receptors for cholesterol. d. cystic fibrosis, which is caused by a mutation in a channel protein, resulting in a buildup of mucus
Osmosis is affected by a solution's ____________ , which is a term that describes the osmotic pressure of a fluid.
Fill in the blank(s) with the appropriate word(s).