Physical exercise normally accounts for a _________ proportion of total energy expenditure.
Fill in the blank(s) with the appropriate word(s).
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A single molecule of glucose requires _____ "turns" through the citric acid cycle for its chemical energy to be completely harvested
A. 1 B. 2 C. 3 D. 4 E. 5
If a geneticist describes a trait as being 70% penetrant, what would they mean?
A. Individuals with the trait show variation in expression B. It is lethal in 30% of the individuals who have the trait C. Only 70% of the individuals who carry the allele(s) for a trait express the trait D. The trait is present in 70% of the population
The sexually transmitted disease characterized by painful genital ulcers is
A. chancroid. B. syphilis. C. gonorrhea. D. trachoma.
__________ is the wood of flowering plants and __________ is the wood of conifers
a. Hardwood; softwood b. Summer wood; spring wood c. Softwood; hardwood d. Spring wood; summer wood e. Heartwood; softwood