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TEAS Science Questions

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Which of the following illustrates a negative feedback mechanism that occurs in the human body? a)the release of insulin from the pancreas in response to an increase in blood sugar levels b) th... e release of glucagon from the pancreas in response to an increase in blood- sugar levels c) the release of oxytocin resulting in uterine contractions as childbirth is underway d) chemical reactions that result in coagulation due to fibrin being released - a) the release of insulin from the pancreas in response to an increase in blood - sugar levels Pancreatic cells have an abundance of _______ to meet the protein production demands of the cell a) nuclei b)mitochondria c)lysosomes d) rough endoplasmic reticulum - d) rough endoplasmic reticulum Nails are made of a protein called ____ a) collagen b)vinculin c)keratin d) elastin - c) keratin Anxiety about an upcoming final exam causes a student to experience an increase in blood pressure, dilation of the pupils, and a dry mouth. Which of the following nervous system responses is responsible for these physical symptoms? A. Voluntary B. Sympathetic C. Limbic D. Cognitive - b) sympathetic Which of the following results from the release of the neurotransmitter dopamine into the nerve synapse? a) the presynaptic neuron fires an action potential b) Dopamine binds to receptor proteins on the membrane of the postsynaptic cell c)Dopamine enters the cytoplasm of the postsynaptic cell d) dopamine cause the postsynaptic nerve cell to contract - b) dopamine binds to receptor proteins on the membrane of the postsynaptic cell Which of the following describes the function of the ribosome in a living cell? a) production of ATP molecules from energy in nutrient molecules b) Disposal and recycling of damaged or unneeded cell parts c) Use of genetic information to build specific protein molecules d) regulation of molecules entering and leaving the cell - c) use of genetic information to build specific protein molecules if an intensive property in independent of the amount of the material being measured, which of the following is an example of intensive property? a)Length b)mass c)volume d) density - c) Density Which of the following statements correctly matches a body system with its function? a) the digestive system facilitates absorption of substances into the bloodstream b) the respiratory system transports oxygenated blood throughout the lungs and body c) The excitatory system prevents harmful substances from entering the body d) The endocrine system transports hormones from place to place within the body - a) the digestive system facilitates absorption of substance into the blood stream 235 U . ---> . X + 4HE 92 . 2 which of the following is "x" in the reaction above? a) 239 Pu 94 b) 231 Pu 94 c) 231 Th 90 - c) 231 Th 90 What is the role of the urethra? a) to transport urine out of the body b) to transport the egg to the uterus [Show More]

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