The sex hormones estrogen, progesterone, and testosterone belong to which class of molecules?

A. proteins
B. amino acids
C. lipids
D. carbohydrates
E. nucleic acids


Ans: C. lipids

Biology & Microbiology

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If a pitcher plant is grown in an insect-free environment, what would you expect to happen?

a. No changes will occur. b. The plant will limit its growth. c. The plant will produce more nectar. d. The plant will instantly die.

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The hormone that promotes conservation of water in the human endocrine system is the

A. antidiuretic hormone (ADH). B. prolactin. C. oxytocin. D. luteinizing hormone (LH). E. thyroid-stimulating hormone (TSH).

Biology & Microbiology

Which organ is part of more than one organ system?

a. stomach b. liver c. pancreas d. intestine e. brain

Biology & Microbiology

A(n) (genome/codon/operon) is a set of prokaryotic genes that are regulated and transcribed as a unit

What will be an ideal response?

Biology & Microbiology