TEAS Science Questions with Correct Answers 100% Verified 2023/2024

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) the 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 - Correct Answer 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 - Correct Answer d) rough endoplasmic reticulum Nails are made of a protein called ____ a) collagen b)vinculin c)keratin d) elastin - Correct Answer 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 - Correct Answer 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