Which of the following is NOT typically a main function of stems?
a. mechanical support
b. storage of water, nutrients and sugars
c. energy capture
d. routes for vascular tissues
e. new growth
C
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If you are rolling a standard six-sided die with each side numbered from 1 to 6, what is the probability that you will roll a 2 or a 4?
a. 1/6 b. 1/2 c. 1/3 d. 1/4
The cell membrane is selectively permeable and regulates transport. It is also involved in
A) secretion. B) storage of wastes. C) storage of DNA. D) Gram stain reactions.
________ cells that convert sugar to starch in mature roots are part of the ________ tissue system
A) Parenchyma; ground B) Xylem; vascular C) Companion; ground D) Periderm; dermal E) Phloem; vascular
The recessive allele of a gene causes cystic fibrosis. For this gene among Caucasians, p = 0.98. If a Caucasian population is in Hardy-Weinberg equilibrium with respect to this gene, what proportion of babies is born homozygous recessive and therefore suffers cystic fibrosis?
A) (0.02)2 = 0.0004
B) 0.02
C) (0.98)2 = 0.9604
D) 2(0.02 × 0.98)= 0.0392