Root hairs are extensions of the ____
a. apical meristem
b. vascular bundles
c. pericycle
d. epidermal cells
e. root cap
ANSWER: d
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Why is nonhomologous end joining usually not a random joining of ends?
What will be an ideal response?
This image shows _____
1.passive transport
2.exocytosis
3.endocytosis
4.pseudopods surrounding a pathogen
The pattern shown in figure 9.6 best resembles
A) a survivorship curve. B) exponential growth. C) R0= 0. D) r < 0.
For what purpose do bacteria use restriction enzymes?
A. They are used in plasmid exchanges to fuse plasmid DNA. B. They are used to restrict important nutrients from leaving the bacterial cell. C. They are used to resist infections by viruses. D. They are used to cut up and recycle mRNA transcripts. E. They are used to attach amino acids to tRNA molecules.