Cell surface receptors that are able to create mechanical stability by tethering cells to the extracellular matrix (ECM) are known as

a) Adhesions.
b) Fibrinogens
c) Notch receptors
d) Integrins


Answer: d) Integrins

Biology & Microbiology

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Gastrulation results in the formation of:

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Biology & Microbiology

Banner-tailed kangaroo rats, Dipodomys spectabilis, are rodents endemic to (found only in) the deserts of the southwestern United States. Which of the following is the best description of their niche?

A. seed-eating rodents that compete with other seed-eating organisms for food B. found in parts of Arizona, New Mexico, Texas, and Mexico C. found primarily in Sonoran and Chihuahuan deserts D. found only in arid habitats E. found primarily in areas with relatively heavy soils

Biology & Microbiology

James Watson and Francis Crick

a. were both English researchers working at Cambridge University. b. performed elegant experiments in DNA chemistry. c. constructed an accurate model of the DNA molecule illustrating its structural simplicity. d. performed experiments that convinced scientists that DNA is a double-stranded molecule. e. did all of these

Biology & Microbiology

how many virus particles per cell does "serum hep" provide?

What will be an ideal response?

Biology & Microbiology