Biology 20 - Demo

The following is a sampling of questions from our Biology 20 testbank.

(Each science question is coded according to program of studies objective, skill required and question for that particular objective. ie. bi1.k.15 [bi1 --- Major concept 1: Unit 1: Biology 20 Program of Studies] --- [k --- Knowledge --- 15] 1st knowledge objective 5th question for the objective

Use the following information to answer questions # 11 - 13.

Plants grow best in light from the
  1. green wavelength
  2. blue or red wavelengths
  3. violet or blue wavelengths
  4. red or yellow wavelengths
Plants tend to reflect light from the
  1. green wavelength
  2. red wavelength
  3. blue wavelength
  4. yellow wavelength
Solar radiation is stored most effectively by plants exposed to light of wavelengths in the
  1. red and blue spectrum
  2. red and green spectrum
  3. yellow and violet spectrum
  4. blue and yellow spectrum
The plant that gained the most mass in the experiment was plant
  1. 1
  2. 5
  3. 3
  4. 2
A botanist wishing to study the ability of a plant to capture and convert solar energy into chemical energy would have to design an experiment that can measure the plant's
  1. albedo
  2. growth rate
  3. total surface area
  4. temperature tolerances

Use the following information to answer questions # 16 - 20.

The highest albedo is registered by the
  1. black, coarse surface
  2. green, shiny surface
  3. white surface
  4. white, shiny surfaces
The surface that most closely resembles the prairie topography in summer is
  1. white
  2. green
  3. green, coarse
  4. white, shiny

The Drumheller badlands would absorb solar energy similar to that of
  1. black surfaces
  2. white, shiny surfaces
  3. green, coarse surfaces
  4. black, coarse surfaces
The city streets of Edmonton and Calgary would have an albedo similar to
  1. black, coarse surfaces
  2. green, shiny surfaces
  3. green, coarse surfaces
  4. white surfaces
The surface that absorbs the largest amount of solar energy is
  1. black and coarse
  2. green and coarse
  3. white and coarse
  4. grey and coarse

As we sit today the earth is covered by roughly 71% water with large masses of ice covering our northern and southern polar regions. A shift of world temperatures by as little as 5ÉC upwards would have drastic effects on the biosphere of the earth. Explain how the biological systems of the world would be effected by this temperature increase. (5 marks)
suggested response:
Cereal grain seeds contain tiny seed plants inside their structure. Explain why these seed grains must be dehydrated before they can be placed into storage bins on Alberta farms. (4 marks)
suggested response:
When the process of decay is delayed due to environmental abnormalities the result is
  1. fossil fuel
  2. plant starch
  3. phosphoric acid production
  4. bacterial and viral infection
Soils that lack nitrogen can readily be identified by the type of plant life growing on them. The plant that grows rapidly in lawns that lack nitrogen is
  1. dandelion
  2. brome grass
  3. puffballs
  4. clover
A student set up two geranium plants. One plant was placed in the dark for 48 hours and the other was placed in bright sunlight for 48 hours. At the end of the 48 hours 3 leaves were removed from each plant. Each set of 3 leaves was placed in boiling alcohol for 3 minutes. The student would make the interpretation that
  1. the solution that turned green had leaves that photosynthesized
  2. the solution that stayed colorless had leaves that photosynthesized
  3. the plant kept in the dark would have produced the colorless solution
  4. the plant that produced a green solution came from the plant kept in bright light
Two plants each weighing 50.0 g are placed in pots containing the same type of soil. For 1 week the plants are given 0.50 mL of a plant nutrient mixed with 50.0 mL of water. One plant is stored in a dark closet for the week. The second plant is kept in a south facing window for the week. A quantitative measure of starch production could be achieved by
  1. determining which plant had the largest increase in mass
  2. deciding which plant had the darker, fuller leaves
  3. measuring the total amount of nutrient used
  4. determining how much soil was removed

Use the following diagram to answer questions # 20 - 22.

Plant Leaf After Boiling in Alcohol

The plant leaf was boiled in alcohol to remove
  1. oxygen
  2. carotenes
  3. chlorophyll
  4. carbon dioxide
The pattern on the leaf exists because the plant was left in bright sunlight for 12 hours. An iodine solution was poured over the leaf to bring out the pattern. The dark lines of the pattern occurred because of a reaction between iodine and
  1. starch
  2. glucose
  3. oils
  4. chlorophyll
Anaerobic respiration occurs inside the animal cell. ATP are produced along with
  1. lactic acid
  2. ethanol and carbon dioxide
  3. water and oxygen
  4. pyruvic acid and acetic acid

Use the following information to answer question # 32.

The correct sequence of aerobic respiration is
  1. C, E, D, B, A
  2. B, C, D, E, A
  3. B, D, E, A, C
  4. B, C, D, A, E

Which product of glycolysis enters the Kreb's Citric Acid cycle?
  1. PGAL
  2. acetic acid
  3. pyruvic acid
  4. hydrogen ions and their electrons
Two hydrogen ions along with their respective electrons move down the hydrogen transfer sequence. Each acceptor has a stronger attraction for the hydrogen ions and their electrons. The correct sequence of hydrogen acceptors is
  1. oxygen --> NAD --> FAD --> cytochrome
  2. NAD --> FAD --> cytochrome --> oxygen
  3. FAD --> NAD --> cytochrome --> oxygen
  4. cytochrome --> FAD --> NAD --> oxygen

Use the following information to answer questions # 49 - 51.

The pyramid represents the relationship between chicken, corn plants, aphids and ants.

This pyramid would have 10000
  1. corn plants
  2. chickens
  3. ants
  4. aphids
The odd shape of the pyramid of numbers occurs because
  1. corn plants are not that hardy
  2. chicken do not require very much food
  3. ants cannot eat all the aphids before they multiply
  4. one corn plant can feed many more aphids
Present day maladies include penicillin resistant bacteria. These bacteria developed because
  1. penicillin was destroying too many bacteria
  2. man was getting too good at wiping out epidemics
  3. of poor methods of screening blood in blood banks
  4. of mutations in the regular population
Many screenwriters have dealt with the topic of life after a nuclear holocaust in which life on earth as we know it is completely changed. Darwin would take the point of view that
  1. people and organisms would develop necessary characteristics to live in the new environment
  2. people and organisms would be completely wiped out and life would one day begin again from a primordial sea
  3. mutations already exist in people and organisms that would make these organisms suitable for the new environment
  4. people and organisms would acquire the necessary characteristics to survive in the new environment
Each year millions of people are born around the world. This means that there are many new variations in the population. Some of those will be better suited to the ever changing environment. Those that are not well suited to the present environment
  1. are aborted or die shortly after birth
  2. adapt changes that are suitable to the environment
  3. will not have the ability to burn glucose in their cells
  4. will reproduce offspring that can live in the new environment
A student observing a microscope slide of a blood smear would find in greatest abundance
  1. erythrocytes
  2. leukocytes
  3. helper T cells
  4. monocytes
Erythroblastosis fetalis is a blood disorder that may attack babies inside the mother's uterus. The disorder is caused by
  1. the rhesus factor
  2. blood type A groupings
  3. malfunctioning leukocytes
  4. too many type B blood cells
Killer T cells are released into the bloodstream to
  1. locate diseased cells and puncture holes in the membranes of the cells
  2. couple with the macrophage cells and produce lymphokine to mark the diseased cells
  3. suppress the work of the leukocytes indicating that the disease has been eradicated
  4. engulf diseased cells to stop them from spreading

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Last modified: April 14, 1999