Of the proteoglycans associated with the extracellular matrix in vertebrates, which of the following is associated with the lubrication of joints?

A) chondroitin sulfate
B) glucuronate
C) hyaluronate
D) keratan sulfate
E) mucoproteins


C) hyaluronate

Biology & Microbiology

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A typical gene has _____ enhancer sequence(s); each enhancer sequence has ____ regulatory transcription factor

A. several; one B. several; several C. from 10-20; from 2-10 D. one; several E. one; from 2-10

Biology & Microbiology

If 100 females produce 50 offspring, the age specific fertility rate is

A. 0.75. B. 0.5. C. 2. D. 50. E. impossible to calculate with this information.

Biology & Microbiology

Endogenous infectious agents arise from microbes that are ________.

A. in food B. in the air C. transmitted from one person to another D. on fomites E. the patient's own normal biota

Biology & Microbiology

Which of the following terms belongs with the words synapsis, tetrads, and chiasmata?

A) haploid B) crossing over C) autosomes D) prophase II E) fertilization

Biology & Microbiology