Mitosis takes place in which region of the root?
a. zone of maturation
b. root cap
c. zone of elongation
d. meristem region
e. region of differentiation
Answer: d
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Describe several reasons why blood flows more slowly in capillaries than in arteries?
What will be an ideal response?
When RNA-dependent RNA polymerase is synthesizing mRNA it is functioning as a ________.
A. helicase B. replicase C. transcriptase D. ligase
Sulfa antibiotics damage bacteria by affecting a certain bacterial enzyme. The sulfa antibiotic looks similar to a substrate normally required by the bacterial cells to live
The sulfa antibiotic occupies the active site of the required enzyme and blocks entry of its normal substrate. This prevents the bacteria from making nucleotides that are required for their reproduction and survival. Based on this information, the action of sulfa antibiotics is an example of A) activation energy. B) denaturing of proteins. C) electron carriers. D) competitive inhibition.
Which of the following is not true of seaweeds?
a. They are found in the red, green, and brown algal groups. b. They have true roots that anchor them tightly to withstand the turbulence of waves. c. They may be a source of food and commercial products. d. Most are classified as charophytes, the closest living relatives of land plants. e. They are multicellular photoautotrophs.