Human Physiology - General Questions and Answers

Which hormones are responsible to regulate the blood calcium levels? Insulin and glucagon Thyroid hormone and insulin Calcitonin and parathyroid hormone Parathyroid hormone and thyroid hormone Glucagon and calcitonin

Most plants incorporate carbon dioxide into sugars by means of a cycle of reactions called the CAM cycle. carbon cycle. Calvin cycle. Krebs cycle.

As many as 25 persons can benefit from a single organ and tissue donor. Thousands of people are in need of an organ or tissue transplant, and anyone, regardless of age, race, or gender can be a donor. Organs that cannot be placed are often used for research on a variety of diseases and conditions. Which of the following body parts is a tissue that could be used in a transplant? A. heart B. kidney C. cornea D. pancreas E. lungs

What best explains the unexpected findings in your data? Over reporting due to feigning (faking illness) Under reporting of incidents Over reporting due to false positives Contamination of lab samples

During steps 6 and 7 of glycolysis, where does the energy come from to create the high energy intermediate 1,3-bisphophoglycerate? From the hydrolysis of ATP From the oxidation of NADH From the substrate level phosphorylation of ATP From the oxidation of glyceraldehyde 3-phosphate

In eukaryotic cells, the citric acid cycle occurs in the cytosol the mitochondrial matrix the intermembrane space the lysosome

What hormone causes dwarfism or gigantism in children when levels are improprerly regulated? GH TSH ACTH FSH LH

What behaviors are considered cardioprotective? Limit fats to <20% of daily calories, with the majority of those fats being saturated fats Limit the amount of fiber in your diet All of the above Don't smoke, or reduce smoking if you are not ready to quit

Which of the following explains how cells become specialized to develop into parts of organ systems? one: Cells join together with others that have the same function, which produces organs. Cells perform chemical reactions that change their physiology, which allows them to become organs. Cells develop in particular areas of the body, which gives them the same functions. Cells undergo differentiation during their development, which activates particular genes.

What mechanism allows the Na*/Glucose symport to move glucose into cells against the glucose concentration gradient? A. The symport uses ATP to power glucose and Na* import. B. The symport pumps Na* out of the cytosol to make room for imported glucose. C. The symport can only change conformation and import Na* if it is also importing glucose. D. The symport can't move glucose against its gradient and will actually export glucose to the gut lumen between meals.

Acetylcholinesterase degrades acetylcholine shortly after it is released by neurons at neuromuscular junctions. What would happen if acetylcholinesterase was inhibited by a toxin? A. Muscles would not be able to contract (known as flaccid paralysis) B. Muscles would continually contract and not relax (known as rigid paralysis) C. Muscles would behave normally.

What happens if an initial stimulus is not sufficient for a neuron's membrane to reach the threshold potential? A. No action potential will occur and the membrane will return to resting membrane potential. B. No action potential will occur, but the membrane will not recover its resting membrane potential. C. The action potential will still occur, but the depolarization won't be as strong.

List the functions of the lymphatic system