Q.1) |  Physical and chemical changes or reactions that occur within the body are collectively known as |
Q.1) | Physical and chemical changes or reactions that occur within the body are collectively known as |
A. | Metabolism |
B. | Physiology |
C. | Assimilation |
D. | excretion |
Q.2) | Which of the following lists best illustrates the idea of increasing levels of complexity? |
A. | Cells, tissues, organelles, organs, systems |
B. | tissues, cells, organs, organelles, systems |
C. | organs, organelles, systems, cells, tissues |
D. | organelles, cells, tissues, organs, systems |
Q.3) | Which of the following is not an example of a homeostatic mechanism? |
A. | Shivering when body temperature falls below normal limts |
B. | increasing heart rate and contraction force when blood pressure falls |
C. | pulling blankets over yourself when cold at night |
D. | secreting insulin after a meal to decrease blood sugar concentration |
Q.4) | Homeostasis is defined as the |
A. | ability of human beings to keep body weight within normal limits |
B. | maintenance of a constant external temperature inside a room |
C. | ingestion of enough food to keep hunger pains from developing |
D. | tendency of the body to maintain a stable environment |
Q.5) | How is oxygen used by living organisms? |
A. | It controls the amount of heat produced |
B. | Its a source of energy |
C. | It is used to release energy that is stored in food |
D. | It is part of water and is necessary to keep organisms hydrated |
Q.6) | Which of the following organs is located in the abdominopelvic cavity? |
A. | Heart |
B. | Trachea |
C. | Thymus gland |
D. | Kidney |
Q.7) | The membrane on the surface of a lung is called the |
A. | Visceral pleura |
B. | parietal pleura |
C. | visceral pericardium |
D. | parietal pericardium |
Q.8) | A section that separates the body in to right and left portions would be the |
A. | Frontal section |
B. | transverse section |
C. | coronal section |
D. | sagittal section |
Q.9) | The thoracic cavity lies where in relationship to the abdominopelvic cavity? |
A. | Dorsal (posterior) |
B. | Ventral (anterior) |
C. | Superior |
D. | inferior |
Q.10) | When the body is placed in the anatomical position, which of the following is not true? |
A. | The face is forward |
B. | the arms are at the sides |
C. | the palms are facing backward |
D. | the body is erect |
Q.11) | A mechanism functioning to maintain a stable internal environment is most likely to involve |
A. | positive feedback |
B. | negative feedback |
C. | a vicious circle |
D. | none of the above |
Q.12) | A parietal membrane __________, where as a visceral membrane ______________. |
A. | covers organs; lines cavities |
B. | lines cavities; covers organs |
C. | is thick; is thin |
D. | secretes mucous;secretes serous fluid |
Q.13) | The diaphragm separates the thoracic and the abdominopelvic cavities. |
A. | True |
B. | False |
Q.14) | The elbow is distal to the wrist. |
A. | True |
B. | False |
Q.15) | A decomposition reaction can be symbolized by |
A. | A+B --> C+D |
B. | A+B -->AB |
C. | AB-->A+B |
D. | C+D-->AB |
Q.16) | Electrolytes are substances that |
A. | Form covalent bonds with water |
B. | ionize when dissolved in water |
C. | cannot conduct electricity in solution |
D. | are not found in the human body in any appreciable amounts. |
Q.17) | The pH scale measures the |
A. | concentration of hydrogen ions in solution |
B. | amounts of salts dissolved in water |
C. | number of hydroxyl ions in water |
D. | strength of an electrical current carried by a solution |
Q.18) | Synthesis reactions are particularly important in the body for |
A. | release of energy |
B. | digestion of food particles |
C. | growth of body parts |
D. | neutralization of acids by buffers |
Q.19) | A covalent bond is characterized by |
A. | one atom sharing and another atom gaining electrons |
B. | atoms sharing pairs of electrons |
C. | oppositely charged atoms being attracted to each other |
D. | All of the above |
Q.20) | Lipids are characterized by |
A. | A group of substances that are insoluble in water. |
B. | a number of compounds such as phospholipids, cholesterol and fats. |
C. | fat molecules containing C, H, & O but the proportion of oxygen is much smaller than in carbohydrates. |
D. | All of the above. |
Q.21) | The general characteristics of proteins are that they |
A. | serve as structural materials, energy sources, and chemical messengers. |
B. | contain C, H, O and N, and sometimes sulfur. |
C. | can act as enzymes |
D. | All of the above. |
Q.22) | An enzyme is defined as a |
A. | protein that speeds up chemical reactions without being changed or depleted. |
B. | protein that functions as a hormone |
C. | protein that inhibits chemical reactions by being changed or depleted |
D. | fibrous protein that is used to help build certain tissues in the body |
Q.23) | Sodium ions and calcium ions are examples of |
A. | Cations |
B. | anions |
C. | salts |
D. | buffers |
Q.24) | Table sugar breaking down into glucose and fructose is an example of |
A. | a synthesis reaction |
B. | hydrolysis |
C. | a decomposition reaction |
D. | an exchange reaction |
Q.25) | water causes substances formed with ionic bonds to |
A. | bond more strongly |
B. | dissociate |
C. | degrade |
D. | denature |
Q.26) | which of the following is not hydrophylic? |
A. | Carbohydrates |
B. | Lipids |
C. | proteins |
D. | nucleic acid |
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