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Test Timeline

Created By: Ken Pitts
According to this information, which group demonstrated the greatest biodiversity during the Cretaceous period?
A dinosaurs
B crocodilians
C snakes
D lizards

If a paleontologist finds fossils of many different species existing in the same area at approximately the same time, the paleontologist can conclude that the ecosystem in this area had a high degree of
A climatic variation.
B episodic speciation.
C biological diversity.
D geographic isolation.

In order for the body to maintain homeostasis, the chemical decomposition of food to produce energy must be followed by
A water intake.
B muscle contractions.
C waste removal.
D nervous impulses.

Carbon dioxide is produced as cells break down nutrients for energy. Which of the following pairs of systems would participate in removing the carbon dioxide from the body?
A endocrine and circulatory
B circulatory and respiratory
C respiratory and endocrine
D reproductive and excretory

The respiratory system depends on the nervous system for signals to
A enhance the amount of available oxygen in the lungs.
B coordinate muscles controlling breathing.
C release enzymes to increase the exchange of gases.
D exchange gases with the circulatory system.

78 Striking the tendon just below the kneecap causes the lower leg to jerk. Moving an object quickly toward the face can cause the eyes to blink shut. These are examples of
A learned responses.
B short-term memory.
C reflex reactions.
D sensory overload.

79 The fight-or-flight response includes greater heart output and a rise in blood pressure. This response is due to
A insulin secreted by the pancreas.
B thyroxine secreted by the thyroid gland.
C oxytocin secreted by the pituitary gland.
D adrenaline secreted by the adrenal glands.

80 Which of these secretes a hormone that regulates the rate of metabolism of the body?
A spleen
B cerebrum
C thyroid
D kidney

The homeostatic mechanism in humans that regulates blood pH depends on the feedback of information from
A stretch receptors.
B chemical receptors.
C hormone receptors.
D thermal receptors.

82 Which of the following is a function of the nervous system?
A releasing ATP into contracting muscle tissues
B signaling muscle tissues to contract
C producing lactic acid in fatigued muscle tissues
D increasing cellular respiration in muscle tissues

83 A signal that the bladder is full is sent to the central nervous system by
A feedback loops.
B sensory neurons.
C nephron tubules.
D receptor proteins.

84 What is the greatest danger to a patient who has had damage to the skin?
A loss of oils produced by the skin
B excessive muscle contractions in the damaged area
C infections in uncovered tissues
D damaged tissue entering the blood stream

Sweat and skin secretions contain a mixture of molecules that kills or limits the growth of many types of microbes. This control of microbes is an example of
A a nonspecific defense against infection.
B an enzyme-catalyzed biochemical reaction.
C a feedback loop to maintain homeostasis.
D a specific immune response to infection by microbes. 

86 The Sabin vaccine is a liquid containing weakened polio viruses. Vaccinated individuals become protected against polio because the weakened viruses
A prevent further viral invasion.
B induce an inflammatory response.
C promote production of antibodies.
D are too weak to cause illness.

87 Injecting a person with a killed-bacteria vaccine can protect that individual from a disease because the proteins of the killed bacteria
A remain in the body, and live bacteria later prey on them instead of live tissues.
B bind with receptors in the body, so that live bacteria cannot bind with them later.
C stimulate the production of antibodies which can be manufactured later in response to infection.
D give the person a mild form of the disease, which conditions the body not to respond to later infection.

Which of the following require a host cell because they are not able to make proteins on their own?
A blue-green algae
B bacteria
C protozoans
D viruses

89 How do human diseases caused by bacteria and diseases caused by viruses react to antibiotics?
A Neither responds to antibiotics.
B Both respond to antibiotics.
C Viral diseases respond to antibiotics;
bacterial diseases do not.
D Bacterial diseases respond to antibiotics; viral diseases do not.

90 Individuals with HIV sometimes contract a pneumonia infection that is rare in the rest of the population because people with HIV
A are unable to fight off these pneumonia-causing organisms.
B are more often exposed to these pneumonia-causing organisms.
C release pheromones that attract the pneumonia-causing organisms.
D release substances that increase the strength of the pneumonia-causing organisms.
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