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Human Physiology
covered in weeks 1-6.
| Question | Answer |
|---|---|
| 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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