HSA Review

BIOLOGY HSA POST-TEST

BIOCHEMISTRY POST-TEST

Part A. Selected-Response Questions

_____1.Which organic molecule stores hereditary information?

  1. carbohydratesC. proteins
  2. lipidsD. nucleic acids

_____2.The products of photosynthesis are

  1. oxygen, water, and energy
  2. glucose and carbon dioxide
  3. oxygen and glucose
  4. carbon dioxide, water, and energy

_____3.Which statement is true about water?

  1. Water is a weak solvent.
  2. Water is a polar molecule.
  3. A water molecule is made up of three kinds of atoms.
  4. Water has higher density than most other substances.

_____4.Why might a biologist use a catalyst?

  1. to maintain a steady pH within a cell
  2. to force two elements to bond together
  3. to increase the rate of a chemical reaction
  4. to increase the mass of the molecules in a cell

_____5.What type of organic compound serves to give plants their rigid structures?

  1. carbohydratesC. nucleic acids
  2. lipidsD. proteins

_____6.Jeda placed a plastic bottle of water in the freezer to make it cold. When she returned to get the bottle, she discovered that it had cracked. Which property of water is responsible for this?

  1. Water is an excellent solvent.
  2. Ice is less dense than liquid water.
  3. Water is a nonpolar molecule.
  4. Water releases and absorbs energy quickly.

_____7.Magnesium and calcium are examples of inorganic substances that the human body needs in small amounts. What are these substances called?

  1. vitaminsC. lipids
  2. mineralsD. carbohydrates

_____8.The pH of blood is relatively neutral. It is neither an acid nor a base. You would expect the pH of blood to be close to

  1. 0 B. 4C. 7D. 14

_____9.Which of these changes would lead to an increase in the removal of carbon dioxide from the atmosphere?

  1. increase in respiration
  2. decrease in photosynthesis
  3. decrease in manufacturing
  4. increase in the number of trees

_____10.An organism that conducts chemosynthesis is different from an organism that conducts photosynthesis because it

  1. does not require energy to produce food
  2. is a consumer rather than a producer of food
  3. uses inorganic compounds as a source of energy
  4. lives in isolation without other organisms around it

_____11.The building blocks for carbohydrates are

  1. simple sugars.C. metabolism.
  2. amino acids.D. nucleotides.

_____12.A protein is

  1. constructed from amino acids.
  2. made of carbon, hydrogen, and oxygen only.
  3. a small molecule.
  4. a building block found in animals only.

Use the graph to answer Numbers 13 through 14.

_____13.Enzyme X will work best in a(n)

  1. neutral solution.C. acid solution.
  2. basic solution.D. carbohydrate solution.

_____14.The optimum pH for enzyme X is

  1. 2 B. 4C. 7D. 12

The diagram below shows the relationship between oxygen and carbon dioxide in an ecosystem.

_____15.Which of these statements is true?

  1. Animals use oxygen during respiration.
  2. Plants use oxygen during photosynthesis.
  3. Animals release oxygen during respiration.
  4. Plants release only carbon dioxide during photosynthesis.

_____16.Which of these is NOT a property of water?

  1. cohesionC. nonpolarity
  2. polarityD. stores heat well

_____17.Enzyme activity is affected by

  1. temperature.
  2. any factor affecting the shape of the enzyme.
  3. pH.
  4. All of the above

_____18.Which of these environmental factors does NOT directly influence the rate of photosynthesis?

  1. light intensityC. carbon dioxide concentration
  2. oxygen concentrationD. temperature

_____19.Photosynthetic organisms get energy from

  1. inorganic substances.C. producers.
  2. light. D. consumers.

_____20.The energy released from ATP is used to

  1. build molecules.C. carry out life activities.
  2. power chemical reactions.D. All of the above


_____21.Graph A demonstrates that the rate of photosynthesis

  1. decreases in response to increasing light intensity.
  2. increases indefinitely in response to increasing light intensity.
  3. increases in response to increasing light intensity, but only to a certain point.
  4. is not affected by changes in light intensity.

_____22.Take together, these graphs demonstrate that

  1. photosynthesis is independent of environmental influences.
  2. increases in light intensity cause increases in temperature.
  3. as the rate of photosynthesis increases, the temperature eventually decreases.
  4. the rate of photosynthesis is affected by changes in the environment.

_____23.Dietary fiber

  1. is readily digested and absorbed.
  2. may prevent cancer in the lower digestive system.
  3. is a component of many simple sugars.
  4. All of the above

_____24.A person who decides to be a vegetarian can obtain the same amino acids as the amino acids that are in beef and chicken if the person chooses to eat

  1. mostly carbohydrates and fats.
  2. plenty of fruits and vegetables.
  3. combinations of beans and grain products.
  4. vitamin supplements with every meal.

_____25.Proteins have a major role in all of the following functions except

  1. forming structural components of organisms.
  2. serving as enzymes.
  3. storing energy.
  4. acting as hormones.

Part B. Brief Constructed Response Question

26. A water plant placed in a bright light gives off bubbles of oxygen. In the lab, it was noticed that if the light were placed at different distances from the plant in the aquarium, the rate of bubbling varied. The data are shown in the table below.

Distance from Light (cm) / O2 Bubbles/Minute /
10 / 40
20 / 20
30 / 10
40 / 5

Analyze the information in the table by responding to the bulleted items below.

  • Plot the data on a line graph. Be sure to label the axes and provide the graph with a title.
  • Describe the independent and dependent variables in this experiment.
  • Draw a conclusion from the data.
  • Predict the amount of oxygen released at 50 and at 60 centimeters.

Write your answer on your own paper.

Biology HSA Review Spring 2006

Biochemistry Post-Test 1