You find an Arabidopsis plant in your greenhouse that lacks stamens and carpels, and has two rows of petals and sepals. What happened to cause this abnormal flower development?

A. a mutation in gene C
B. an overexpression of gene B
C. a mutation in gene A
D. a mutation in gene C and overexpression of gene E
E. mutations in gene C and gene A


A. a mutation in gene C

Biology & Microbiology

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Which of the following is not coded for by the retroviral genome?

A. viral coat proteins B. tRNA C. reverse transcriptase D. integrase E. envelope protein

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Gonadotropin-releasing hormone regulates

A. follicle-stimulating hormone. B. luteinizing hormone. C. steroid production by the gonads. D. both follicle-stimulating and luteinizing hormones. E. both follicle-stimulating and luteinizing hormones as well as steroid production by the gonads.

Biology & Microbiology

All of the following lipids or lipid components are hydrophobic EXCEPT

A) fatty acid tails. B) saturated fats. C) unsaturated fats. D) waxes. E) fatty acid heads.

Biology & Microbiology

If a bacterial cell is placed in a _______ solution, it loses water by a process referred to as _________

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology