The sequence of nucleotides in a messenger RNA molecule is needed to determine the sequence of
A. amino acids in a protein.
B. nucleotides in the anticodons of tRNA.
C. nucleotides in a gene.
D. amino acids in DNA.
E. codons in DNA.
A
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Calcium homeostasis is regulated through the digestive tract.
a. true b. false
________ have 46 chromosomes, whereas ________ have 23.
A. Type A spermatogonia; type B spermatogonia B. Secondary spermatocytes; primary spermatocytes C. Primary spermatocytes; spermatids D. Spermatogonia; primary spermatocytes E. Spermatids; spermatozoa
The fibula
A) forms an important part of the knee joint. B) articulates with the femur. C) helps to bear the weight of the body. D) provides lateral stability to the ankle. E) is the medial bone of the leg.
As someone starts to develop in puberty, most cells in their reproductive organs are probably starting to express
A. more receptors for sex hormones. B. fewer receptors for sex hormones.