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Study Stack 1
Physiology 1-6
| Question | Answer |
|---|---|
| What are the three levels of homeostatic control? | Intracellular control, Intrinsic control, Extrinsic control |
| What type of tissue help reduce friction between opposing surfaces in a movable joint? | Connective tissue. |
| What are the primary germ layers in embryonic tissue development? | Endoderm, Mesoderm, Ectoderm. |
| What are the four phases of Mitotic cell division? | Prophase, Metaphase, Anaphase, Telophase |
| At what phase does a centromere of each chromosome split to form two chromo-somes, each consisting of a single DNA molecule? | Anaphase. |
| Cells reproduce by splitting themselves into two smaller daughter cells. True or False. | True. |
| Which feedback system negate changes in a variable? | Negative Feedback Loop |
| Which feedback system amplify or reinforce the change that is occurring? | Positive Feedback Loop |
| What are organic compounds containing carbon, hydrogen, and oxygen commonly called sugars and starches? | Carbohydrates |
| What are the three major roles of lipids in the body? | 1. Energy source 2. Structural role 3. Integral parts of cell membranes |
| What is the most abundant organic compounds in the body? | Proteins |
| What forms the backbone of the chains in DNA? | Alternating deoxyribose and phosphate units. |
| What are the base bonds in DNA? | 1. Adenine binds to thymine (two hydrogen bonds) 2. Cytosine binds to guanine (three hydrogen bonds) |
| What are the nitrogenous bases in RNA? | Adenine, Uracil, Guanine, and Cytosine |
| What is the set of chemical reactions in a cell? | Catabolism- the breakdown of molecules into smaller molecules. Anabolism- the building of larger molecules from smaller molecules. |
| Active transport requires energy use by the membrane? True or False. | True. |
| Passive transport does not require any energy expenditure by the cell ? True or False. | True. |
| What happens to cells in a hypotonic solution? | The cell swells as water flows into them. |
| What is Deoxyribonucleic acid (DNA)? | A double-helix polymer (composed of nucleotides) that functions to transfer information, encoded in genes, to direct the synthesis of proteins. |
| What are the two primary layers of skin? | Epidermis and Dermis. |
| What sensory nerve endings to form “light touch” receptors? | Tactile epithelial cells (Merkel cells) |
| How long does it take for skin to regenerate? | 35 days. |
| What type of bone is dense and solid in appearance? | Compact bone. |
| Osteons permit delivery of nutrients and removal of waste products. True or False. | True. |
| What type of bone is also called spongy bone or trabecular bone? | Cancellous bone. |
| What bone-forming cells are found in all bone surfaces? | Osteoblast. |
| What are the general functions of muscle? | 1. Movement of the body as a whole or movement of its parts 2. Heat production 3. Posture |
| What are the four different kinds of protein molecules make up myofilaments? | Myosin, Actin, Tropomyosin, and Troponin. |
| What are the characteristics of skeletal muscle cells? | 1. Excitability (irritability)—ability to be stimulated 2. Contractility—ability to contract, or shorten, and produce body movement 3. Extensibility—ability to extend, or stretch, thereby allowing muscles to return to their resting length |
Created by:
dsandyly
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