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Human Physiology

covered in weeks 1-6.

QuestionAnswer
Shivering to try to raise your body temperature back to normal would be an example of the body trying to maintain homeostasis. a negative-feedback mechanism.
Which of the following is not one of the basic components in a feedback control loop? Transmitter
Of the 11 major body systems, which is the least involved in maintaining homeostasis? Reproductive
The normal reading or range of normal is called the: set point.
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
Homeostasis can best be described as: a state of relative constancy
Intracellular parasites that consist of DNA or RNA surrounded by a protein coat and sometimes by a lipoprotein envelope are called: virus
Negative-feedback mechanisms: minimize changes in blood glucose levels.maintain homeostasis. are responsible for an increased rate of sweating when air temperature is higher than body temperature.
Of the pathogenic organisms, which of the following are the most complex? tapeworms
Which of the following may put one at risk for developing a given disease Environment Stress Lifestyle
Negative-feedback control systems: oppose a change
Epidemiology is the study of the _____ of diseases in human populations. occurrence distribution transmission
The contraction of the uterus during the birth of a baby is an example of _____ feedback. positive
Intrinsic control: is sometimes called autoregulation
Pathogenesis can be defined as: the course of disease development.
The body’s thermostat is located in the: hypothalamus.
Positive-feedback control systems: accelerate a change.
The term that literally means self-immunity is: autoimmunity.
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
Which of the following is a basic component of every feedback control loop? sensor mechanism integrating center effector feedback
A _____ is a functional group that is temporarily unattached and is highly reactive because of unpaired electrons. free radical
The amino group in an amino acid is: NH3+
If one side of a DNA molecule is CTAGGCTG, the other side would be: GATCCGAC.
Unsaturated fats: will kink or bend because of the double bonds between the carbon atoms.
DNA s a double-helix strand of nucleotides.
A structural lipid found in the cell membrane is a: phospholipid. steroid.
Which of the following is not true of both triglycerides and phospholipids? They both contain a hydrophobic and hydrophilic end.
When two molecules of glucose are joined, they form which disaccharide? Sucrose Maltose
Peptide bonds join together molecules of: glycerol. amino acids.
The types of lipids found that form hormones, such as cortisone, estrogen, and testosterone are: steroids.
Which of the following is not true of RNA? It contains ribose sugar. It contains adenine. It is composed of smaller molecules called nucleotides.
Which energy-releasing or energy-transferring molecule does not contain a nucleotide? Creatine phosphate
The alpha helix is an example of which level of protein structure? Secondary
The formation of sucrose involves the removal of a molecule of water. This is called: dehydration synthesis.
The type of lipoprotein associated with “bad” cholesterol and the production of atherosclerotic changes in blood vessels is: LDL.
Humans can synthesize 13 of 21 basic amino acids; the remaining 8, which must be included in the diet, are called: essential amino acids.
What is the most important factor in determining the physical and chemical properties of fatty acids? Degree of saturation
The term glycoprotein, a combination of two words, tells you that the compound is made of _____, with _____ being the dominant component. carbohydrate and protein; protein
Which of the following is not true of carbohydrates? They include substances commonly called sugars. They are the body’s primary source of energy. They are a part of both DNA and RNA.
Which of the following is not one of the major groups of organic substances in the human body? Salts
Which lipid is part of vitamin D? Steroids
Sometimes referred to as animal starch, _____ is the main polysaccharide in the body. glycogen
Amino acids frequently become joined by: peptide bonds.
Which lipid acts as a “tissue hormone”? Prostaglandin
The element that is present in all proteins but not in carbohydrates i nitrogen.
The roles played by proteins can be divided into which categories? Structural and functional
All of the following substances are organic except electrolytes.
The basic building blocks of fats are: fatty acids and glycerol.
Which level of protein structure refers to the number, kind, and sequence of amino acids? Primary
Prostaglandins and steroids share which of the following characteristics? Both have a ring structure in their molecule.
Created by: torimorales
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