Based on what you know about the biochemical composition of cells from Chapter 1 in your text book, the primary information containing building blocks of chromosomes are likely
A. amino acids.
B. lipids.
C. nucleotides.
D. carbohydrates.
C
Biology & Microbiology
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Microenvironments of soil exist where ________ concentrations greatly vary
A) oxygen B) nitrate C) sulfur D) oxygen, nitrate, and sulfur
Biology & Microbiology
The chemical composition of urine reflects the processes of
A. filtration. B. reabsorption. C. secretion. D. concentration. E. All of the answer choices are correct.
Biology & Microbiology
Which of these types of animals would you expect to find in the deepest rock layers?
A) whales B) fish C) parrots D) frogs
Biology & Microbiology
The yolk sac of humans
A) stores nutrients to support the developing embryo. B) is evidence of humans' relationships with egg-laying vertebrates. C) secretes HCG. D) absorbs nutrients from, and releases waste to, the mother's blood.
Biology & Microbiology