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Morgan Smith
Physiology 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 and a negative-feedback mechanism. |
| What term describes a signal traveling toward a particular center or point of reference? | Afferent |
| Negative-feedback control systems: | Oppose a change |
| what is not a lipid? | Polysaccharide |
| A triglyceride is composed of a glycerol molecule and three of the same type of fatty acid. True or False ? | False |
| What determines how a protein performs? | Shape |
| When two amino acids are joined, a peptide bond is formed and an H+ ion is released. True or False? | False |
| Which lipid is part of vitamin D? | Steroids |
| The result of meiosis is | Four daughter cells that are haploid |
| RNA makes proteins by | Translation |
| Red blood cells are placed in an unknown solution. After 45 minutes, the cells are examined and determined to have decreased in size. The unknown solution is | Hypertonic |
| Osmosis can be defined as | the net movement of water molecules from a region of lower solute concentration to a region of higher solute concentration. |
| Which is not a characteristic of meiosis? | Two haploid gametes |
| During which stage of mitosis do the centrioles move to the opposite poles of the cell? | Prophase |
| Diffusion requires: | A concentration gradient |
| Extensive weight training causes the muscle cells to: | Hypertrophy |
| Which cells electrically insulate axons to increase the speed of conduction? | Oligodendrocytes and Schwann cells |
| Why is cartilage slow to heal? | It is semi-solid and flexible and because it has little to no blood supply |
| In bone formation, the cells that produce the organic matrix are the: | Osteoblasts |
| The cells responsible for active erosion of bone minerals are called: | Osteoclasts |
| The four kinds of protein that make up myofilaments are myosin, actin, | Tropomyosin and myofibril |
| The muscle’s ability to stretch or extend and to return to its resting length is called? | Extensibility |
| The minimal level of stimulation required to cause a fiber to contract is called the? | Threshold stimulus |
| A contraction in which the tension within the muscle remains the same but the length changes is called a ??????? contraction. | Isotonic |
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morgank00
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