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BIOLOGY MULTIPLE CHOICE TEST WITH ANSWER



BIOLOGY MULTIPLE CHOICE TEST WITH ANSWER
Below are few of my collections of Biology Multiple Choice Questions with answer related to respiratory system, circulatory system and Mendelian inheritance. 
1.  What important activity takes place in the lungs?
a.       Food is digested.
b.      Liquid waste is filtered from the blood.
c.       Oxygen is exchanged for carbon dioxide.
d.      The trachea is exchanged for the larynx.
2.  What is the purpose of the little hairs inside the nose?
a.       To fight disease.
b.      They serve no purpose.
c.       To keep dust out of the lungs.
d.      To tickle the nose and cause sneezes.
3.  From what source do cells get their food?
a.       Blood                                            c.  Oxygen
b.      Other cells                                     d.  carbon dioxide
4.   Why is oxygen important to blood and to the cells?
a.       Oxygen helps the blood to clot.
b.      Oxygen brings food to the cells.
c.       Oxygen is necessary for cell growth and energy.
d.      Oxygen is not important -- carbon dioxide is the most
important substance to the body.
5.  Why does blood turn dark red as it circulates through the body?
a.       It starts to clot.
b.      It gets old and dirty flowing through the body.
c.       The oxygen in it is replaced with carbon dioxide.
d.      The farther blood is from the heart, the more dark red it is.
6.  When blood flows into the right atrium from the body, it contains
a. little oxygen and a lot of carbon dioxide.
b. a lot of oxygen and little carbon dioxide.
c. a lot of both oxygen and carbon dioxide.
d. little of either oxygen or carbon dioxide.
7.  Air moves out of the lungs when the pressure inside the lungs is
a.  less than the pressure in the atmosphere.
b.  greater than the pressure in the atmosphere.
c.   equal to the pressure in the atmosphere.
d.   greater than the intra-alveolar pressure.
8.  Which is the correct sequence of blood vessels from the heart through the body and back to the heart?
a. Veins venules capillaries arterioles arteries
b. Arterioles arteries capillaries veins venules
c. Arteries arterioles veins venules capillaries
d. Arteries arterioles capillaries venules veins
9.  When we breathe in, we inhale many gases present in the air, including oxygen. 
                         What do you think happens to the gases that are not needed by the body?
a.       These gases will be absorbed in the lungs.
b.      These gases will not be recognized by the body.
c.       These gases will be given off together with the carbon dioxide.
d.      These gases will still pass from the lungs into the blood, and circulate throughout the body.

10.  .  The heart is considered to be a double pump because __________.
a.       The atria contract then the ventricles contract, giving two pumps.
b.      The two sides of the heart beat independently, controlled by two separate mechanisms.
c.       The two sides of the heart pump blood that never mixes.
d.      There is a "back up" mechanism in the heart in case of heart attack that gives one a "second chance" - that is the double pump available to everyone.
11.  Anemia is a disorder that results from an insufficient number of red blood cells or from the diminished ability of the red blood cells to carry oxygen to the tissues of the body. What component of red blood cells is diminished if a person is suffering from anemia?
a. chlorophyll                                      c. cytoplasm
b. hemoglobin                                    d. gamma globulin
12.   Which of the following is a respiratory disorder that results in permanent damage to the alveoli?
a.       SARS                                                        c.  common cold
b.      Emphysema                                             d.  influenza
13.  During pulmonary circulation, blood leaves the
a.       right atrium and goes directly to the lungs.
b.      right ventricle and moves to the lungs.
c.       left ventricle and moves to the lungs.
d.      right ventricle and goes directly to the aorta.
14.  The role of valves in the veins is to
 a. Keep the blood from flowing backward when the veins are squeezed by the skeletal muscles
b. Push the blood upward toward the heart
c. Slow blood flow in the veins so that the blood can move more slowly in the capillaries
d. Block the flow of blood to the heart until it has time to contract again
15.  What happens to cause air to be exhaled from the lungs?
a. The rib muscles contract and move outward.
b. The chest cavity expands and grows larger.
c. The diaphragm relaxes and moves upward.
d. The lungs contract and then expand.
16.  .  Mendel's unit factors in pairs are most accurately known to be __________.
a.        two maternal chromatids
b.      two alleles on nonhomologous chromosomes
c.       two alleles on a paternal and a maternal homologue
d.      identical alleles on homologous chromosomes
17.  The term phenotype refers to the __________ of an individual.
a.       breeding pattern
b.      number of chromosomes
c.       genetic constitution
d.      appearance of a characteristic or trait
18.  Organisms that have two identical alleles for a particular trait are said to be
                        a.  hybrid.                                            c.  heterozygous
                        b.  homozygous                                  d.  domina
 19.  Yellow seed color (Y) is dominant to green (y) and round seed shape (R ) is dominant to  wrinkled (r ). What genotypes produce yellow, wrinkled seeds?
a.  YYRr and YyRr                            c.  YYRR and Yyrr
                        b) YyRR and yyrr                               d . Yyrr and YYrr
20.  After crossing two strains of cabbage plant, one green and one yellow, you find the first generation offspring are all green. In the F2, you find 87 green plants and 28 yellow plants. What mode of inheritance best explains your results?
a) non-mendelian inheritance              c.  complete dominance
b) dominant epistasis                          d.  partial dominance
21.  In humans, the ability to roll the tongue is a dominant trait. The inability to roll the tongue is a recessive trait. If two individuals homozygous recessive for this trait have a child, what is the chance that the child will be able to roll his tongue?
a.       100%                                             c. 25%
                        b.50%                                         d.  0%

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