Why don't the countries that most need high-protein crops grow them?
A) High-protein crops usually require fertilizers, which may not be affordable to these countries.
B) High-protein crops require extensive irrigation, which may not be affordable to these countries.
C) High-protein crops are more difficult to process, making the foods they produce too expensive.
D) High-protein crops are typically low in most other vital nutrients.
Answer: A
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Assume that an mRNA transcript is synthesized complementary to this DNA sequence:3
'-CTTACATGGCATCC-5' See the provided genetic code table. If the start codon is considered the first codon, which amino acid is specified by the second codon?
a. asparagine b. tyrosine c. arginine d. proline e. cysteine
Fatty acids are ________; they function in the cell as ________
A) short chains of double-bonded carbon molecules; storage lipids B) short chains of double-bonded carbon molecules; vitamins and cofactors C) four-ringed hydrocarbon molecules; key components of membranes D) long, unbranched hydrocarbon chains with a carboxyl group at one end; building blocks for other lipids E) short chains of double-bonded carbon molecules; vitamins, cofactors, and storage lipids
Which of the following is an incorrect description of a blood vessel type?
A) Veins have high compliance. B) Most of the blood volume at rest is in the systemic veins. C) Arteries are elastic. D) The radius of arterioles can be regulated by both intrinsic and extrinsic controls. E) Capillary walls are comprised of only two cell layers, minimizing the distance for exchange.
Which statement regarding cell reproduction is true?
A. There is no DNA replication during cell reproduction. B. Cell division occurs prior to DNA replication. C. DNA replicates before cell division occurs. D. DNA replication and cell division occur at the same time. E. There is no cell division during cell reproduction.