Fight-or-flight reactions include activation of the _____
A) parathyroid glands, leading to increased metabolic rate
B) anterior pituitary gland, leading to cessation of gonadal function
C) adrenal medulla, leading to increased secretion of epinephrine
D) pancreas, leading to a reduction in the blood sugar concentration
C
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Homeotic genes encode very important transcription factors that specify the identity of body parts or segments during development
For example, the development of legs on thoracic segments T1, T2, and T3 and wings on segment T2 is controlled by homeotic genes. A. true B. false
The extracellular matrix of blood consists of ____
a. fibronectin b. elastin c. plasma d. basal lamina e. interstitial fluid
When a shoot bends toward the light, that means that more ________ are being produced on the side ________ the light
a. auxins / away from b. gibberellins / away from c. auxins / closer to d. cytokinins / closer to
What animals could drink seawater and not get dehydrated?
A. garter snake B. human C. sea gull D. freshwater perch E. bullfrog