Which of the following ions is associated with auxin and used during signal transduction that causes a plant to bend towards a light source?

A. H+
B. Ca2+
C. Mg2+
D. Na+


Answer: A

Biology & Microbiology

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The breakdown of glucose to pyruvate by a cell is an example of a(n) ________ reaction.

A) anabolic B) aerobic C) catabolic D) amphibolic E) synthesis

Biology & Microbiology

While phenotypically male, smaller testes, enlarged breasts, and reduced body hair are all signs of a non-disjunction error condition that results in an XXY genotype. Which kind of error results in XXY genotype, called Klinefelter syndrome?

a. point mutation b. deletion c. non-disjunction d. crossing over

Biology & Microbiology

Which of the following indicates the distance, in nucleotides, between genes and genetic markers?

a. physical map b. model organism c. genome sequence d. genetic map

Biology & Microbiology

Which of the following is the best definition of "empty magnification"?

A) An image is magnified so much resolution and contrast are lost. B) A specimen is so lacking in color it cannot be observed on a light microscope. C) A magnified specimen is so small it cannot be resolved on a light microscope. D) The background on the field is almost totally black. E) A magnified image has lots of empty space around a small object.

Biology & Microbiology