The outer membrane of the nucleus is continuous with the membrane of which other organelle?

A. mitochondrion
B. endoplasmic reticulum
C. peroxisome
D. Golgi apparatus
E. endosome


Ans: B. endoplasmic reticulum

Biology & Microbiology

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The Panamanian golden frog is in decline because of __________, which are being driven by ____________.

A. outbreaks of a virus, global climate change B. outbreaks of a fungus, deforestation C. introduced species, increased global trade D. outbreaks of a fungus, global climate change E. outbreaks of a virus, deforestation

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Which hormone results in the production of more neurons in the higher vocal center of the brains of male, but not

female, zebra finches?

a. testosterone b. estrogen c. octopamine d. epinephrine e. androgen

Biology & Microbiology

The important feature of all cells that react to a specific hormone is (are) the

a. type of blood supply they receive. b. proximity of the endocrine gland. c. presence of an appropriate receptor molecule. d. characteristics of their plasma membranes. e. presence of specific genes responsive to the hormone.

Biology & Microbiology

Every node in a phylogenetic tree represents a(n) ________

A) common ancestor B) extinction event C) transitional form D) sister species

Biology & Microbiology