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Week1-3
Anna Mattern
| Question | Answer |
|---|---|
| Homeostasis can best be described as: | a state of relative constancy. |
| Positive-feedback control systems: | accelerate a change. |
| The term that literally means self-immunity is: | autoimmunity |
| Intracellular parasites that consist of DNA or RNA surrounded by a protein coat and sometimes by a lipoprotein envelope are called: | viruses. |
| Of the 11 major body systems, which is the least involved in maintaining homeostasis? | Reproductive |
| The body’s thermostat is located in the | hypothalamus. |
| 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 |
| Epidemiology is the study of the _____ of diseases in human populations. | occurrence distribution transmission |
| Intrinsic control: | is sometimes called autoregulation |
| 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. |
| The normal reading or range of normal is called the: | set point. |
| Which of the following is not one of the basic components in a feedback control loop? | Transmitter |
| Which of the following may put one at risk for developing a given disease? | Environment Stress Lifestyle |
| Of the 11 major body systems, which is the least involved in maintaining homeostasis? | Reproductive |
| 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. |
| f 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. |
| Negative-feedback control systems: | oppose a change. |
| The contraction of the uterus during the birth of a baby is an example of _____ feedback. | positive |
| Pathogenesis can be defined as: | the course of disease development |
| Of the pathogenic organisms, which of the following are the most complex? | Tapeworms |
| Which lipid is part of vitamin D? | Steroids |
| Humans can synthesize 13 of 21 basic amino acids; the remaining 8, which must be included in the diet, are called: | essential amino acids. |
| When two molecules of glucose are joined, they form which disaccharide? | Maltose |
| The types of lipids found that form hormones, such as cortisone, estrogen, and testosterone are: | steroids. |
| Peptide bonds join together molecules of: | amino acids. |
| If one side of a DNA molecule is CTAGGCTG, the other side would be: | GATCCGAC. |
| The alpha helix is an example of which level of protein structure? | Secondary |
| Which level of protein structure refers to the number, kind, and sequence of amino acids? | Primary |
| A _____ is a functional group that is temporarily unattached and is highly reactive because of unpaired electrons. | free radical |
| The basic building blocks of fats are: | fatty acids and glycerol. |
| Sometimes referred to as animal starch, _____ is the main polysaccharide in the body. | glycogen |
| Unsaturated fats: | will kink or bend because of the double bonds between the carbon atoms. |
| Which of the following is not one of the major groups of organic substances in the human body? | Salts |
| Which of the following is not true of RNA? | It contains ribose sugar. It contains adenine. It is composed of smaller molecules called nucleotides |
| All of the following substances are organic except: | electrolytes. |
| 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. |
| Which lipid acts as a “tissue hormone”? | Prostaglandin |
| Which of the following is not true of both triglycerides and phospholipids? | They both contain a hydrophobic and hydrophilic end |
| 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 |
| The small water channels in the cell membrane are called: | aquaporins. |
| All of the following are examples of passive transport except: | endocytosis. |
| Which is not true about the sodium and potassium pump? | Sodium moves into the cell and potassium moves out of the cell. |
| The correct order of the phases of mitosis is: | prophase, metaphase, anaphase, telophase. |
| Phagocytosis is an example of: | endocytosis |
| Transcription can be best described as the: | synthesis of mRNA. |
| If a sequence of nitrogen bases in nucleic acid were A-U-C-G-A, which of the following would be true about the nucleic acid? | It contains ribose sugar. |
| Water will move through the cell membrane by: | osmosis |
| NaCl would move through the cell membrane in which direction? | Both into and out of the cell |
| Which of the following is not true of RNA? | It contains deoxyribose sugar. |
| Extensive weight training causes the muscle cells to: | hypertrophy |
| Diffusion requires: | a concentration gradient. |
| Which is true about the sodium and potassium pump? | Three sodium ions are taken out of the cell. |
| A saline solution that contains a higher concentration of salt than a red blood cell would be: | hypertonic |
| When the chromosomes align themselves across the equator of the spindle fibers, it is characteristic of which phase of mitosis? | Metaphase |
| All of the following occur as a result of meiosis except: | chromosome number remains at 46. |
| Which of the following statements is true? | The site of transcription is within the nucleus, whereas the site of translation is in the cytoplasm. |
| Twenty-three chromosomes per cell in humans is referred to as: | haploid |
| 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 |
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Annam7160
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