8th Grade Living Environment Midterm Regents Exam
- 1.Describe one example of diffusion in the human body. In your description be sure to: • identify the place where diffusion takes place • identify a substance that diffuses there identify where that substance diffuses from and where it diffuses to, at that place
- 2.Vaccines play an important role in the ability of the body to resist certain diseases. Describe the contents of a vaccine.
- 3.Vaccines play an important role in the ability of the body to resist certain diseases. Explain how a vaccination results in the long-term ability of the body to resist disease. BONUS QUESTION(+5): Identify the system in the body that is most directly affected by a vaccination (PLEASE WRITE THIS SYSTEM IN ALL CAPS).
- 4.
Base your answer on the diagram below and on your knowledge of biology. Which statement describes two unsafe laboratory practices represented in the diagram?- A.
The opening of the test tube is pointed toward the student and the student is not wearing goggles.
- B.
2) The beaker has water in it and the flame is under the tripod.
- C.
3) The test tube is unstoppered and the student is not wearing goggles.
- D.
4) The flame is too high and the test tube is unstoppered.
- 5.Diagrams, tables, and graphs are used by scientists mainly to
- A.
test a hypothesis
- B.
predict the independent variable
- C.
Design a research plan for an experiment
- D.
Organize data
- 6.
The diagram below represents levels of organization in living things. Which term would best represent X?
- A.
Stomach
- B.
Organelle
- C.
Tissue
- D.
Human
- 7.The absorption and distribution of materials within an organism is a life function known as
- A.
TRANSPORT
- B.
SYNTHESIS
- C.
REPRODUCTION
- D.
LOCOMOTION
- 8.
Which graph of blood sugar level over a 12-hour period best illustrates the concept of dynamic equilibrium in the body?
- A.
Graph 1
- B.
Graph 2
- C.
Graph 3
- D.
Graph 4
- 9.Which situation is not an example of the maintenance of a dynamic equilibrium in an organism?
- A.
Water passes into an animal cell causing it to swell
- B.
The release of insulin lowers the blood sugar level in a human after eating a mea.
- C.
Guard cells contribute to the regulation of water content in a geranium plant
- D.
A runner perspires while running a race on a hot summer day.
- 10.Feedback interactions in the human body are important because they
- A.
1) regulate the shape of molecules involved in cellular communication
- B.
2) determine the diversity necessary for evolution to occur
- C.
3) keep the internal body environment within its normal range
- D.
4) direct the synthesis of altered genes that are passed on to every cell in the body
- 11.Which response usually occurs after an individual receives a vaccination for influenza virus?
- A.
1) Antibodies against the virus form in the blood.
- B.
2) Enzymes released from platelets hydrolyze the virus.
- C.
3) Antigens from the vaccine deactivate the virus.
- D.
4) Hormones in the blood inhibit reproduction of the virus.
- 12.Which elements are present in all organic compounds?
- A.
Nitrogen and carbon
- B.
2) nitrogen and oxygen
- C.
3) hydrogen and oxygen
- D.
4) hydrogen and carbon
- 13.An enzyme that works best in an acidic environment would function best at a pH of
- A.
11
- B.
9
- C.
3
- D.
7
- 14.A student placed a food sample in a test tube. She added Benedict's solution to the sample and heated the test tube in a boiling water bath. After a few minutes, no color change was observed. Which conclusion could correctly be drawn?
- A.
Protein is present
- B.
Glucose is present
- C.
Protein is not present
- D.
Glucose is not present
- 15.
Base your answer to the following question on the graph below and on your knowledge of biology. Which factor most likely accounts for the change in the rate of enzyme action as the temperature increases from 40°C to 58°C?
- A.
The high temperature causes the shape of the enzyme to be altered.
- B.
Not enough substrate is present at these high temperatures
- C.
Excess acids have been building up, causing the enzyme to become fatigued.
- D.
Too much substrate is present at these high temperatures.
- 16.
A red onion cell has undergone a change, as represented in the diagram below.
- A.
Salt water
- B.
Light
- C.
Darkness
- D.
Distilled water
- 17.Which substance is a suitable indicator for detecting the presence of starch in a plant cell?
- A.
Bromthymol blue
- B.
PH paper
- C.
Fehling's solution
- D.
Iodine solution
- 18.How does the control setup in an experiment differ from the other setups in the same experiment?
- A.
1) It utilizes a different method of data collection.
- B.
2) It differs in the one variable being tested.
- C.
3) It tests a different hypothesis.
- D.
4) It has more variables.
- 19.A child has brown hair and brown eyes. His father has brown hair and blue eyes. His mother has red hair and brown eyes. The best explanation for the child having brown hair and brown eyes is that
- A.
A.) a gene mutation occurred that resulted in brown hair and brown eyes
- B.
B.) gene expression must change in each generation so evolution can occur
- C.
C.) the child received genetic information from each parent
- D.
D.) cell from his mother’s eyes were present in the fertilized egg.
- 20.
The diagram below represents a genetic procedure.Which statement best describes the outcome of this procedure?
- A.
A.) bacterial cells will destroy defective human genetic material
- B.
B.) bacterial cells may form a multicellular embryo
- C.
C.) the inserted human DNA will change harmful bacteria to harmless ones
- D.
D.) the inserted human DNA may direct the synthesis of human proteins
- 21.
Viral activity is represented in the diagram below. Invading the host cell enables the virus to
- A.
Reproduce
- B.
Obtain nutrients
- C.
Increase in its size
- D.
Synthesized need for oxygen
- 22.Feedback interactions in the human body are important because they
- A.
Regulate the shape of molecules involved in cellular communication
- B.
Determine the diversity necessary for evolution to occur
- C.
Keep the internal body environment within its normal range
- D.
Direct the synthesis of altered genes that are passed on to every cell in the body
- 23.Even though the environment changes, a population that occupies a given geographic area will most likely continue to be found in this area if the
- A.
Members of the population exceed the carrying capacity
- B.
Members of the population decrease in number
- C.
Population passes on those genes that result in favorable adaptations
- D.
Variations in the population decrease over time
- 24.One similarity between cell receptors and antibodies is that both
- A.
1) are highly specific in their actions
- B.
2) are involved in digestion
- C.
3) slow the rates of chemical reactions
- D.
4) are produced by nerve cells
- 25.
Which one do you like?
- A.
The individuals who survived were able to produce antibodies against the ebola virus
- B.
80% of the population had a natural immunity to the Ebola virus
- C.
80% of the population was infected with a viral antigen
- D.
The individuals who survived were not exposed to the Ebola antigens.
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