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Rima Rohit
Physiology Assignment 1 - Weeks 1-6
| Question | Answer |
|---|---|
| Which of the following is a basic component of every feedback control loop? | All of these are components of a feedback control loop (sensor mechanism, integrating center, effector, feedback) |
| Events that lead to an immune response to an infection or the formation of a blood clot are examples of | Positive Feedback |
| Which level of control operates at the cell level, often using genes and enzymes to regulate cell function? | Intracellular Regulation |
| The concept that information may flow ahead to another process to trigger a change in anticipation of an event that will follow is called | Feed-Forward |
| What term describes a signal traveling toward a particular center or point of reference? | Afferent |
| Negative-feedback mechanisms: | All of the above are correct (minimize changes in blood glucose levels, maintain homeostasis, are responsible for an increased rate of sweating when air temperature is higher than body temperature) |
| 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 |
| The body's thermostat is located in the | Hypothalamus |
| Of the 11 major body systems, which is the least involved in maintaining homeostasis? | Reproductive |
| RNA and DNA have the same pyrimidine bases but different purine bases. | False |
| A triglyceride is composed of a glycerol molecule and three of the same type of fatty acid. | False |
| What determines how a protein performs? | Shape |
| The lipid that is often referred to as a tissue hormone is | Prostaglandin |
| Which of these is not a lipid? | Polysaccharide |
| The element that is present in all proteins but not in carbohydrates is: | Nitrogen |
| Humans can synthesize 13 of 21 basic amino acids; the remaining 8, which must be included in the diet, are called: | Essential Amino Acids |
| Prostaglandins and steroids share which of the following characteristics? | Both have a ring structure in their molecule |
| The type of lipoprotein associated with "bad" cholesterol and the production of atherosclerotic changes in blood vessels is: | LDL |
| The type of lipds found that form hormones, such as cortisone, estrogen, and testosterone are: | Steriods |
| In which stage of mitosis do chromosomes move to the opposite ends of cells along the spindle fibers? | Anaphase |
| If red blood cells containing 10% solute are placed in a solution containing 10% solute, what will happen? | Water will move into and out of the cells at equal rates. |
| Facilitated diffusion is not an active transport process because it | Does not depend on cell energy |
| A chemical that reduces the amount of activation energy needed to start a chemical reaction is a(n) | Catalyst |
| The result of meiosis is | Four daughter cells that are haploid |
| A membrane carrier structure attracts a solute to a binding site, changes shape, and releases the solute on the other side of the cell membrane. This describes the process of: | Carrier-Mediated Transport |
| A saline solution that contains a higher concentration of salt than a red blood cell would be: | Hypertonic |
| All of the following are examples of passive transport except: | Endocytosis |
| Extensive weight training causes the muscle cells to: | Hypertrophy |
| Which is true about the sodium and potassium pump? | Three sodium ions are taken out of the cell |
| Which is not a function of epithelial tissue? | Assimilation |
| Which cells electrically insulate axons to increase the speed of conduction? | Both A and B (Oligodendrocytes & Schwann Cells) |
| Which of the following is not a characteristic of smooth muscles? | Having intercalated disks |
| Which type of connective tissue helps newborns maintain body temperature of producing heat? | Brown Fat |
| Which is the following is not a characteristic of skeletal muscles? | Having one nucleus per cell |
| Which of the following is not a characteristic of the diaphysis? | Provides a bulbous shape for attachment of muscle |
| A condition that is caused by an abnormally increased roundness in the thoracic curvature is | Kyphosis |
| Bones grow in a diameter by the combined action of which two of the three bone cell types? | Osteoblasts and Osteoclasts |
| Which of the following is not dependent on the proper amount of calcium ions in the blood? | All of the above are dependent on the proper amount of calcium ions in the blood (blood clotting, transmission of nerve impulses, contraction of cardiac muscle) |
| Which of the following is not a charactertistic of the epiphyses? | Cylindrical in shape |
| The joint present during the growth years between the epiphyses of a long bone and its diaphysis is the | Synchrondrosis |
| According to the sliding filament theory | Actin moves past myosin |
| Which type of movement occurs between the carpal and tarsal bones and between the articular facets of adjoining spinal vertebrae? | Gliding |
| Repeated stimulation of muscle in time lessens its excitability and contractibility and may result in | Fatigue |
| Synarthrotic joints are | Immovable |
| Which joint allows for the most movement? | Ball and Socket |
| Which type of muscle is responsible for peristalsis? | Single-Unit Smooth |
| The largest and most frequently injured joint is the: | Knee |
| Which of the following is not one of the major functions of muscles? | Protection |
| Which type of joint joins the two pubic bones together? | Symphysis |
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Rima Rohit
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