If gastrulation was blocked by an environmental toxin, then ________.

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#Question id: 15448

#XL - S Microbiology

Stimulation of a single B cell would result in the generation of a clone of cells having_____

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#Question id: 10340

#XL - Q Biochemistry

There several charecteristics of nitrate reductase, which of the following properties of nitrate reductase is incorrect?

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#Question id: 561

#XL - Q Biochemistry

Enzyme X exhibits maximum activity at pH = 6.9.  X shows a fairly sharp decrease in its activity when the pH goes much lower than 6.4.  One likely interpretation of this pH activity is that:

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#Question id: 8936

#XL - R Botany

Organisms showing radial symmetry would likely

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#Question id: 3480

#XL - T Zoology

Which of the following statements about learning and behavior is correct?

A) Operant conditioning involves associating a behavior with a reward or punishment.

B) Associative learning involves linking one stimulus with another.

C) Behavior can be modified by learning, but some apparent learning is due to maturation.

D) Imprinting is a learned behavior with an innate component acquired during a sensitive period.