What is the role played by adipokinetic hormone in the regulation of insect flight?
What will be an ideal response?
Answer: During energy-demanding activities such as flight, adipokinetic hormone (AdK) is released by the corpora cardiacum and stimulates the mobilization of insect fat body lipid and glycogen stores. The resultant mobilized products (i.e., DAG, fatty acids, and trehalose) provide energy to the flight muscles.
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If an animal cell has 18 chromosomes and undergoes mitosis, how many chromosomes would each daughter cell have?
A) 9 B) 36 C) 23 D) 18 E) It varies, but the total number in the two daughter cells will always add up to 18.
Fear can result in
A) increased stimulation of the cardioinhibitory center by higher brain centers. B) increased stimulation of the cardioacceleratory center by higher brain centers. C) decreased heart rate. D) decreased blood pressure. E) parasympathetic stimulation.
Which vitamin is necessary to produce many clotting factors in the liver?
A. Vitamin K B. Vitamin D C. Vitamin C D. Vitamin B3
The epidermis of the skin is composed of _______ tissue, while the dermis of the skin is composed of _______ tissue.
A.) connective; muscular B.) connective; epithelial C.) nervous; connective D.) epithelial; connective E.) epithelial; muscular