A __________ is a confined fluid upon which muscle contractions act. What will be an ideal response?


hydrostatic skeleton

Biology & Microbiology

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Which of the boxes marked 1-4 correspond to plants with a heterozygous genotype?

A) 1 B) 1 and 2 C) 1, 2, and 3 D) 2 and 3 E) 2, 3, and 4

Biology & Microbiology

The glands of vertebrates are derived from ____________ epithelium.  

A.  invaginated B.  stratified C.  endocrine D.  scarified E.  keratinized

Biology & Microbiology

Which of the following is a hominin?

a. chimpanzee b. Australopithecus c. baboon d. chimpanzee and Australopithecus e. chimpanzee, Australopithecus, and baboon

Biology & Microbiology

Which class of drugs would be effective against HIV but not against most other pathogenic viruses?

A. Translation inhibitors that stop assembly of viral proteins B. Receptor antagonists that block viral entry C. Non-nucleoside reverse transcriptase inhibitors that block reverse transcription D. Nucleotide analogs that halt replication

Biology & Microbiology