What is a reason for the slow progress of manganese nodule mining?
a. The lack of monetary value of the nodules
b. None of these choices.
c. The lack of technology to mine them.
d. The impending question of ownership of them.
d
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True or False: fats are not an animal's primary source of energy because some tissue types like brain tissue use glucose exclusively
A. true B. false
The replication illustrated here is termed
a. dominant. b. recessive c. semiconservative. d. conservative. e. hemiconservative.
In horses, black coat color is influenced by the dominant allele (B), and chestnut coat color by the
recessive allele (b). Trotting gait is due to a dominant gene (T), pacing gait to the recessive allele (t). What color horse would you use to find out the genotype of a black trotter? Give the genotype and phenotype. What will be an ideal response?
Given that the enzymes that catalyze nitrogen fixation are inhibited by oxygen, what are two "strategies" that nitrogen-fixing prokaryotes might use to protect these enzymes from oxygen?
1. Couple them with photosystem II (the photosystem that splits water molecules). 2. Package them in membranes that are impermeable to all gases. 3. Be obligate anaerobes. 4. Be strict aerobes. 5. Package these enzymes in specialized cells or compartments that inhibit oxygen entry. A) 1 and 4 B) 2 and 4 C) 3 and 4 D) 3 and 5