Suppose that you extract all of the proteins of a leaf and measure the percentage that is rubisco. What percentage of the leaf proteins will the rubisco comprise?

a. 10%
b. 25%
c. 50%
d. 75%


Answer: c. 50%

Biology & Microbiology

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The annual growth rings seen in trees are made up of

a. apical meristem. b. cork cambium. c. vascular cambium. d. both apical meristem and cork cambium.

Biology & Microbiology

Of all the different codons that exist, three of

them

a. are not used in any organisms. b. do not code for an amino acid. c. code for non-functional amino acids. d. signify ‘start here’. e. do more than one of these things.

Biology & Microbiology

Which uses synthetic DNA plus DNA cloning techniques to introduce nucleotide changes at specific sites?

a. artificial chromosome synthesis b. ligation c. oligonucleotide replacement d. site-directed mutagenesis

Biology & Microbiology

The conversion of nitrate (NO3-) to nitrogen gas (N2) is called

A. photosynthesis. B. denitrification. C. nitrification. D. ammonification. E. nitrogen fixation.

Biology & Microbiology