Which of the following microscopes provides an image that is upside-down and facing left when viewed through the eye piece?
a. dissecting
b. light
c. scanning electron
d. transmission electron
b. light
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Which of the following statements is CORRECT about biomembranes?
A. The phospholipid tails interact with water. B. The phospholipid head groups are repelled by water. C. Electron microscopy indicates the membrane looks like train tracks with two light lines of lipids separated by a dark line containing proteins. D. The membrane is composed of two protein layers separated by a lipid layer. E. Membrane proteins are globular, and some span the phospholipid bilayer and project from both sides of the membrane.
GnRH-producing cells in the brains of male cichlids are larger in territorial individuals
Indicate whether the statement is true or false.
Red coat is dominant in horses and white coat is recessive. In a cross between a homozygous dominant red-coated
horse and a white-coated horse, what genotype(s) would be observed in the offspring?
a. all homozygous recessive b. all homozygous dominant c. half homozygous dominant and half homozygous recessive d. all heterozygous e. half heterozygous and half homozygous dominant
Populations of species that occupy the same geographic area and interact with each other are collectively called a(n)
A) population. B) ecosystem. C) drift. D) biosphere. E) community.