Which of the following drugs is NOT an alkaloid?

A. morphine
B. caffeine
C. LSD
D. nicotine
E. heroin


C. LSD

Biology & Microbiology

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Which of the following are fetal membranes? (Check all that apply.)  

_____  chorion _____  endometrium _____  allantois _____  amnion _____  yolk sac

Biology & Microbiology

Which of the following statements is most

correct concerning the ancestry of Eukarya?

a. The lineage that led to Eukarya consists only of other eukaryotes. b. The lineage that led to Eukarya consists only of Archea. c. The lineage that led to Eukarya consists only of Bacteria. d. The lineage that led to Eukarya consists of Archaea and Bacteria. e. There is no lineage that led to Eukarya. Eukarya arose and has remained always in stasis.

Biology & Microbiology

The most accurate statement about FSH is ________.

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

Biology & Microbiology

A hypothetical population has two alleles for a gene: A and a. In a random sample of 100 individuals, 20 are homozygous for a, 20 are homozygous for A, and 60 are heterozygous. What is the frequency of A?

A) 20% B) 25% C) 50% D) 60% E) 80%

Biology & Microbiology