A squirrel population in an oak forest in Indiana is limited by hawk predators, the amount of acorns produced annually, nesting sites in the trees, and cold winter temperatures. Which of the following is an abiotic factor limiting this squirrel population?
A. the hawks in the region
B. the number of acorns produced annually
C. the stress of cold winter temperatures
D. the number of available nesting sites
Ans: C. the stress of cold winter temperatures
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Chaparral is
A. a type of shrubland/grassland. B. a type of forest. C. restricted to serpentine soils. D. widespread in Africa. E. distinguished by tall trees.
About 4% of individuals of Northern European descent are carriers for ____, an autosomal recessive genetic disorder
in which a defective membrane transport protein leads to deficient chloride levels in extracellular fluids.
a. Duchenne muscular dystrophy b. phenylketonuria c. achondroplasia d. sickle-cell anemia e. cystic fibrosis
X-linked traits are more likely to be expressed in males. Why? Under what circumstances are they expressed in females?
What will be an ideal response?
Part of antibody involved in binding to various cells and molecules of the immune response
A. Fab B. Fc C. Hinge region D. Complement binding site E. Disulfide bonds