A taproot system lacks

(a) lateral roots.
(b) a taproot.
(c) both of the above.
(d) none of the above.


(d) none of the above.

Biology & Microbiology

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Interaction of a pathogen-associated molecular pattern (PAMP) with a pattern recognition receptor (PRR) results in

A) formation of transmembrane pores that cause cell lysis. B) transmembrane signal transduction that initiates transcription of genes involved in phagocytosis, inflammation, and pathogen killing. C) molecular activation of the adaptive immune system. D) a superantigen reaction that can cause septic shock.

Biology & Microbiology

Which of the following allows cells to recognize each other?

a. Glycolipids b. Protein channels c. Carbohydrates d. Cholesterol

Biology & Microbiology

When you feel threatened, the

neurotransmitter, ___, is released from ___ neurons and your response is to fight or flee.

a. acetylcholine--sympathetic b. acetylcholine--parasympathetic c. norepinephrine--sympathetic d. serotonin--sympathetic e. serotonin--parasympathetic

Biology & Microbiology

Which layer of the digestive tract is in direct contact with digested food?

a. mucosa b. circular muscle c. longitudinal muscle d. submucosa e. serosa

Biology & Microbiology