If you were preparing nutrient agar at home and did not have an autoclave, what could you use to sterilize the nutrient agar?
A) bleach
B) boiling for one hour
C) hydrogen peroxide
D) oven at 121°C for one hour
E) pressure cooker at 121°C for 15 minutes
E
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Hyposecretion of ADH results in
A) stimulation of protein synthesis. B) reduced uptake of blood glucose. C) diabetes insipidus. D) an increase in the mass and length of bones. E) overstimulation of cell division.
By analyzing the chemical formulas, you can determine that this molecule, CH3CH(NH2)COOH, is a(n) ________, whereas the molecule C5H10O5 is a(n) ________
A) cholesterol; amino acid B) fatty acid; sugar C) nucleotide; glycerol D) amino acid; sugar
In the late 1990s, what important discovery in genetics was made?
a. The three-dimensional structure of DNA was described, which showed how DNA might be replicated. b. The first recombinant DNA experiments were performed that started the biotechnology field. c. DNA sequencing methods were first discovered. d. Genes were found to be located on chromosomes. e. Tiny RNAs were discovered that play important roles in the regulation of gene expression.
Trace the correct path of the sperm during ejaculation.
A. vas deferens, seminiferous tubules, epididymis, urethra B. seminiferous tubules, vas deferens, epididymis, urethra C. testes, urethra, vas deferens, penis D. seminiferous tubules, epididymis, vas deferens, urethra E. urethra, vas deferens, seminal vesicles, testes