The cell layer responsible for the production of cork cells in Figure 35-3 is:
a. 2.
b. 3.
c. 4.
d. 9.
e. 11.
B
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You are researching a cytoplasmic protein associated with a nerve disorder. The native form of the enzyme appears to be globular protein; however, when a sample of the purified protein is treated with a chemical that reduces disulfide bonds,
the enzymatic activity decreases dramatically and multiple globular proteins can be detected in the sample. What does this tell you about the protein? A) The primary structure of the protein contains multiple cysteine residues that are hydrolyzed by the chemical reductant. B) The protein is most likely composed of multiple polypeptide chains that are held together by disulfide bonds. C) The protein is most likely composed of ? helices that are held together by disulfide bonds. D) The protein is most likely composed of ? sheets that are held together by disulfide bonds. E) The primary and secondary structure of the protein depends on disulfide bonds.
Biologists currently recognize ________ different kingdoms.
Fill in the blank(s) with the appropriate word(s).
The ________ are fungi that lack mitochondria, peroxisomes, and centrioles.
Fill in the blank(s) with the appropriate word(s).
What cyanobacterium is an excellent source of both protein and iron, useful in treatment of anemia and acts as a food source for good intestinal flora probiotics Lactobacillus & Bifidus?
a. Anabena b. Microcysts c. Chlorobi d. Spirulina e. Synechoccocus