What structure will help prevent the backflow of blood within the veins?

a. Valves
b. Skeletal muscle
c. Endothelium
d. Smooth muscle
e. Basement membrane


a

Biology & Microbiology

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What kind of climate is most often associated with epiphytic plants?

A) warm B) humid C) sunny D) freezing

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Spinal reflexes do not involve

a. afferent nerves. b. efferent nerves. c. interneurons. d. the spinal cord. e. the brain.

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In the garden peas example above, a tall plant with white flowers crossed with a dwarf plant with

purple flowers produces 1/4 tall purple flowers, 1/4 tall white flowers, 1/4 dwarf purple flowers, and 1/4 dwarf white flowers. What is the genotype of the parents? What will be an ideal response?

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Fibrous structural proteins of the extracellular matrix are embedded in gels formed from polysaccharides called

a. elastin. b. fibronectin. c. glycosaminoglycans (GAGs). d. laminin.

Biology & Microbiology