Four of the five choices listed below are types of

cells in plants. Select the exception.
a. cork
b. parenchyma
c. cuticle
d. sieve tube
e. tracheid


Answer: c

Biology & Microbiology

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Considering the global carbon cycle, where are humans having a great impact?

I) terrestrial ecosystems II) oceans III) atmosphere A) only I B) only II C) only III D) only I and III E) I, II, and III

Biology & Microbiology

Which of the following leukocytes have granules in their cytoplasm that stain blue with methylene blue?

A) eosinophils B) monocytes C) lymphocytes D) neutrophils E) basophils

Biology & Microbiology

Which of the following statements is true?

A) The term expressivity defines the percentage of individuals who show at least some degree of expression of a mutant genotype. B) Penetrance specifically refers to the expression of lethal genes in heterozygotes. C) Genomic anticipation refers to observations that a genetic disorder occurs at an earlier age in successive generations, whereas genetic imprinting occurs when gene expression varies depending on parental origin. D) Expressivity is the term used to describe the balanced genetic output from a hemizygous condition. E) Genomic imprinting occurs when one allele converts another.

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The equilibrium constant (K) for the reaction Y->X can be expressed with respect to the concentrations of the reactant and product molecules. Which of the expressions below shows the correct relationship between K, [Y], and [X]?

(a) K = [Y]/[X] (b) K = [Y] * [X] (c) K = [X]/[Y] (d) K = [X] – [Y]

Biology & Microbiology