After a cookie has been eaten and digested, sugar molecules enter bloodstream by process of

a. active transport
b. diffusion
c. excretion
d. cellular respiration


Answer: b. diffusion

Biology & Microbiology

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Choose the description below that best matches the current model of RNA polymerase holoenzyme.

A. A core enzyme composed of five sigma factors bound by a polypeptide chain. B. A core enzyme composed of five polypeptides bound by ribosomes. C. An open complex or "bubble" formed by DNA, mRNA, and RNA polymerase. D. A core enzyme composed of five polypeptides bound by a transcription factor.

Biology & Microbiology

Entropy is a measure of

A. order. B. kinetic energy. C. potential energy. D. disorder. E. complexity.

Biology & Microbiology

Fill in the blanks to complete the following statements. Bacteria can produce __________ that are highly resistant forms of the organism that develop in response to adverse environmental conditions

Fill in the blank(s) with correct word

Biology & Microbiology

Protein deficiency tends to cause edema because __________.

a. blood pressure rises, pushing fluid out of the capillary b. a decrease in plasma protein levels reduces the osmotic force driving fluid into the capillary c. a rise in angiotensin promotes vasoconstriction d. activation of the parasympathetic nervous system

Biology & Microbiology