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week 1-6

physiology

QuestionAnswer
which of the following is a protein substance with no DNA or RNA and is thought to be the cause of mad cow disease? prion
If the secretion of oxytocin during childbirth operated as a negative feedback control loop, what effect would it have on uterine contractions? oxytocin would inhibit uterine contractions.
intrinsic control is sometime called autoregulation.
positive feedback control systems accelerate a change/
humans can synthesize 13 of 21 basic amino acids; the remaining 8 , which must be included in the diet, are called: essential amino acids.
sometimes referred to as animal starch, --- is the main polysaccharide in the body. glycogen
a structural lipid found in the cell membrane is a : phospholipid and steroid.
the basic building blocks of fats are: fatty acids and glycerol.
The element that is present in all proteins but not in carbohydrates is nitrogen.
the correct order of the phases of mitosis is prophase, metaphase, anaphase, telophase.
during which stage of mitosis do the centrioles move to the opposite poles the cell? d prophase
an individual's entire set of DNA can be referred to as a: genome.
the physical process by which water and solute move through a membrane when a hydrostatic pressure gradient exists across the membrane is the process of filtration.
two solutions of different concentrations of glucose are separated by a membrane that allows both glucose and water to pass through. When dynamic equilibrium is reached, there will be: an even exchange of material across the membrane.
the small water channels in the cell membrane are called: aquaporins.
which is true about the sodium and potassium pump? three sodium ions are taken out of the cell.
diffusion of particles through a membrane by means of a carrier molecule is called: facilitated diffusion.
all of the following occur as a result of meiosis: primitive sex cells become mature gametes, the cells become haploid, meiosis occurs in two steps.
an individual's entire set of DNA can be referred to as a genome.
diffusion of particles through a membrane by means of a carrier molecule is called: facilitated diffusion.
which of the following is not a characteristic of connective tissue? typically holds its cells together tightly by means of desmosomes.
which cells form the blood brain barrie that protects the brain form harmful substances in the blood? astrocytes.
which of the following vitamins are absorbed through the skin ? vitamin A, D and K.
which of the following is not a proteoglycan found in the matrix of connective tissue? collagen.
connective tissue forms from stem cell tissue called: mesenchyme.
which cells electrically insulate axons to increase the speed of conduction? Oligodendrocytes, Schwann cells.
the function of epithelial tissue absorption, secretion, protection
which type of connective tissue helps newborns maintain body temperature by producing heat? Brown fat.
basement membrane is composed of molecules made by--- tissue. connective and epithelial.
which of the following are dependent on the proper amount of calcium ions in the blood? blood clotting, transmission of nerve impulses, contraction of cardiac muscle.
normally, bone loss will begin to exceed bone gain between the ages of ----years. 35-40.
as the activity of osteoblasts increases, the : amount of calcium in bone increases, level of calcium in the blood decreases.
the substance that attracts oxygen in the myoglobin molecule is iron.
the ability of muscle cells to respond to nerve stimuli is called: irritability.
the lactate produced by anaerobic respiration is converted back to glucose in the liver
a condyloid joint is an example of an ---joint. biaxial.
after it is released from the sarcoplasmic reticulum, the calcium combines with which protein? troponin.
which of the following terms describes an isometric contraction? static tension
Created by: qiuyilu
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