What are the three different types of skeletal systems?
What will be an ideal response?
Answer: Hydrostatic, exoskeleton, and endoskeleton
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Explain how the SRY gene induces the development of testes and the male reproductive tract
What will be an ideal response?
The spinal cord runs through, and is protected by, the __________. Fill in the blank(s) with the appropriate word(s)
The unfolded protein response slows the production of ________ and increases the ________
A) signal recognition particles; activity of proteasomes B) most proteins; production of lysosomal proteins C) protein disulfide isomerase; activity of proteasomes D) most proteins; production of proteins required for protein folding and degradation
Arteries differ from veins in that
A. veins carry blood to the internal organs of the body. B. arteries have valves that veins do not have. C. veins have thinner walls than arteries. D. the pressure in veins is greater than that in arteries.