SAT II Biology E : Animal Biology

Study concepts, example questions & explanations for SAT II Biology E

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Example Questions

Example Question #125 : Sat Subject Test In Biology

Which of the following glands is considered both part of the endocrine system and the nervous system?

Possible Answers:

Hypothalamus

Parathyroid gland

Thalamus

Pituitary gland

Thyroid gland

Correct answer:

Hypothalamus

Explanation:

The correct answer is hypothalamus. The hypothalamus is made of nervous tissue and is a part of all vertebrate brains, placing it as part of the nervous system. It also secretes a number of hormones that directly affect the pituitary gland, affecting a large number of bodily functions. In this way, the hypothalamus connects the nervous and endocrine systems and is part of both of them.

Example Question #1 : Excretory And Digestive Systems

Lipase and trypsin are secreted by what digestive organ?

Possible Answers:

Pancreas

Salivary glands

Small intestine

Large intestine

Stomach

Correct answer:

Pancreas

Explanation:

Lipase and trypsin are enzymes secreted by the pancreas into the duodenum of the small intestine. These enzymes aid in the digestion of food. Salivary glands produce amylase in order to begin digestion in the mouth and the stomach aids in digestion primarily via stomach acid

Example Question #1 : Systems Biology

Which of the following neurotransmitters is the primary inhibitory neurotransmitter in the human central nervous system?

Possible Answers:

GABA

Serotonin

Dopamine

Acetylcholine

Glutamate

Correct answer:

GABA

Explanation:

The correct answer is GABA. GABA is the primary inhibitor used to lower the activity of cells in the human central nervous system. Glutamate, serotonin, and dopamine usually increase the activity of cells, and acetylcholine can increase or decrease cell activity depending on what cell receptor is interacting with the acetylcholine.

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