This figure compares an intertidal habitat before and after an oil spill. Which one of the following organisms appears to persist after the spill?

1.fish
2.mollusks
3.echinoderms
4.barnacles
4

Biology & Microbiology

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Myelinated axons make up the _________ of the brain

A. brain stem B. white matter C. sulci D. gray matter

Biology & Microbiology

A transgenic crop is created by _____

a. artificial selection b. selective breeding c. transfer of a genetic trait from a different species into the plant's cells d. culturing adult stem cells e. cutting DNA with restriction enzymes and separating the DNA fragments by size

Biology & Microbiology

If all the offspring of a testcross are alike and

resemble the organism being tested, then that parent is a. homozygous dominant. b. homozygous recessive. c. heterozygous. d. recessive. e. incompletely dominant.

Biology & Microbiology

Monoclonal antibodies bound to toxins are known as ____

a. interleukins b. immunotoxins c. antibodies d. IgT e. interferons

Biology & Microbiology