Hydrophobic messengers include which of the following?

A) retinoids
B) cAMP
C) pertussis toxin
D) calcium ions
E) ryanodine


A) retinoids

Biology & Microbiology

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Humans have direct development, a closed circulatory system, well-developed eyes, and large brains. Which mollusk also shares these features?  

A.  Chiton B.  Slug C.  Octopus D.  Nudibranch Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about cephalopods? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Biology & Microbiology

In skeletal muscle contraction, which of the following must be moved to the grooves in the actin

double helix to uncover the crossbridge binding site?

a. troponin b. Ca2+ c. tropomyosin d. ATP e. acetylcholine

Biology & Microbiology

This does not apply to ribosomes

A. Prokaryotes and eukaryotes have different ribosomes B. Ribosomes are made of protein and RNA C. Ribosomes are made of two subunits D. Ribosomes are site of translation E. All apply to ribosomes

Biology & Microbiology

Which of the following is/are recommended to avoid food borne infections?

What will be an ideal response?

Biology & Microbiology