The brain regulates the amount of cortisol produced by the adrenals by releasing ______, which is a type of _______ hormone

a. testosterone; steroid
b. epinephrine; peptide
c. epinephrine; amino acid-derived
d. CRH; steroid
e. CRH; peptide


E; The brain produces CRH (a medium-sized peptide) when a person is under stress. The CRH acts on the pituitary, which releases ACTH (a large peptide), which acts on the adrenal cortex, prompting it to release cortisol (a steroid).

Biology & Microbiology

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Place the cellular processes responsible for animal development in the correct order: ____

a. induction ? differentiation ? determination b. induction ? determination ? differentiation c. determination ? induction ? differentiation d. determination ? differentiation ? induction e. differentiation ? determination ? induction

Biology & Microbiology

What type of neuron directly stimulates a muscle or gland?

a. afferent neuron b. efferent neuron c. interneuron d. afferent and efferent neurons e. afferent neurons and interneurons

Biology & Microbiology

In a population of 400 salamanders, some individuals have long toes and others have short toes. This phenotypic difference is due to a single gene with dominant and recessive alleles, T and t, where T confers long toes. If the toe length gene is in Hardy Weinberg equilibrium, and 256 individuals have short toes, how many individuals are heterozygous at the toe length locus?

A) More information is needed to determine the answer. B) 32 C) 128 D) 144

Biology & Microbiology

Which of the following communication signals matches the animal?

a. chemical; honeybees b. tactile; frogs c. auditory; baboons d. visual; frogs e. chemical; fireflies

Biology & Microbiology