Which structure contains the angiosperm egg?

A. style
B. stigma
C. anther
D. embryo sac
E. endosperm


Answer: D

Biology & Microbiology

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In Bacteria, sensor kinases that respond to extracellular signals transfer this signal to the cytoplasmic machinery by typically phosphorylating the ________ residues

A) histidine B) serine C) threonine D) tyrosine

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The discovery of immense ridges and trenches stretching thousands of kilometers across the seafloor in the 1950’s led

to acceptance of the theory of ____.

a. magnetic poles b. creationism c. evolution d. natural selection e. plate tectonics

Biology & Microbiology

Which part of the brain is involved in sensory adaptation?

A. pons B. cerebellum C. thalamus D. medulla oblongata E. ventricles

Biology & Microbiology

The control in an experiment _______.

A. makes the experiment valid B. is an additional replicate for statistical purposes C. reduces the experimental errors D. minimizes experimental inaccuracy E. allows for comparisons to the experimental group

Biology & Microbiology