Which of the following best describes the bark of a tree?
a. all of the tissue outside the vascular cambium
b. the tissue inside of the vascular cambium
c. cork and periderm
d. secondary phloem
e. primary phloem
A
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In mismatch repair on newly replicated DNA, enzymes distinguish between old and newly replicated DNA strands based on the fact that newly replicated DNA strands are ________-methylated relative to older DNA.
Fill in the blank(s) with the appropriate word(s).
When you pick up your backpack and sling into onto your shoulder, your biceps contract
What must occur for your arm to move back down to your side as you walk away?
a. An antagonistic muscle must contract. b. The tendon connected to the biceps must elongate. c. No muscles must contract. d. Not only must an antagonistic muscle contract, but also the tendon connected to the biceps must elongate
The type of transmission that involves air as a vehicle is droplet nuclei that are transmitted by _____ and _____
Fill in the blank(s) with the appropriate word(s).
All bacteria and viruses are
A) antibodies. B) plasma cells. C) pathogens. D) causes of cancer. E) microbes.