INTRUCTIONS: Place a check on the box if the organ/structure is present in billy goats/bucks. Leave it blank if it is absent. Goats Testes Scrotum Epididymis Ductus deferens Ampulla Seminal vescicle Prostate gland Bulbourethral gland Bladder Penis Sigmoid flexure

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A: Active transport includes the use of metabolic energy for the transport of substances.

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A:    

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Sleep Physiology

Sleep is a condition of reduced muscle movement in the body. Awareness about the surroundings is reduced at the time of sleep. The body stays mildly responsive or non-responsive to external stimuli. The sleep-wake cycle is controlled by the circadian rhythm that produces a resting phase for the body.