Amylase is a digestive enzyme. Salivary glands in your mouth make salivary amylase, which begins the digestive process by breaking down food into smaller molecules as you chew. Which of these diagrams best represents part of the structure of amylase?

C. [Diagram showing two 'Amino acid' blocks connected]

A. [Diagram showing three 'SUGA' blocks in a row]

B. [Diagram showing six 'nucleotide' blocks connected in pairs]

D. [Diagram showing 'GLYCEROL' with three 'FATTY ACID' blocks attached]

Which of the following correctly matches the structure AND function? Choose TWO.

B. Structure 2: Protein → structural component

D. Structure 4: Nucleic Acid → transfer of genetic information

A. Structure 1: Carbohydrate → long-term energy storage

C. Structure 3: Lipid → waterproofing

Which of these factors was NOT controlled in the experiment?

D. the mass of the liver and potato tissues

B. the volume of the test tubes

C. the volume of hydrogen peroxide solution

The student conducted a second experiment. She boiled the liver tissue completely and added it to the hydrogen peroxide solution. She observed that little to no oxygen was released in the second experiment.

A. Exposing catalase to high temperatures makes it inactive.

B. Boiling liver breaks down hydrogen peroxide faster.

C. Exposing catalase to high temperatures changes it into a different enzyme.

D. Boiling removes oxygen from the liver.

A cell has a defect that results in the loss of its ability to regulate the passage of water, food, and wastes into and out of the cell. In which of the following cell structures is this defect most likely to be located?

C. Cell membrane: semipermeable membrane

A. Mitochondria: energy producing organelles

B. Chloroplasts: energy producing organelles

D. Golgi apparatus: involved in packaging and transport

Which of the following is one important difference between a virus and a bacterial cell?

C. A virus can never reproduce on its own, but a bacterial cell can.

A. A virus is much larger in size than a bacterial cell.

B. A virus always causes more severe disease than a bacterial cell.

D. A virus does not contain genetic material, but a bacterial cell does.

The graph below shows how the activity of an enzyme changes over a range of pH values. Which of the following conclusions is supported by the data? Choose TWO.

A. The optimum pH of the enzyme is 9.

C. The enzyme’s activity is greater around pH 8 than around pH 5.

B. The optimum pH of the enzyme is 14.

D. The enzyme’s activity continually increases as pH increases from 9 to 10.

There are many different enzymes located in the cytoplasm of a single cell. How is a specific enzyme able to catalyze a specific reaction?

C. An enzyme binds to a specific substrate (reactant) for the reaction catalyzed.

A. Different enzymes are synthesized in specific areas of cytoplasm.

B. Most enzymes can catalyze many different reactions.

D. Enzymes are transported to specific substrates (reactants) by ribosomes.

If the paramecium is then placed in a hypertonic environment, which of the following will occur?

D. Water will diffuse out of the paramecium.

A. Water will diffuse into the paramecium.

B. Salt will be pumped out of the paramecium by the vacuole.

C. Salt will be pumped into the paramecium by the vacuole.

Diagram C nor Diagram D above show active transport or passive transport. Which statement supports this statement?

C. There is no evidence of a concentration gradient.

A. Water is moving from an area of high concentration to low.

B. Molecules are moving in Diagrams C and D.

D. Water is moving from an area of low concentration to high.

Which would be the best conditions for algae to undergo photosynthesis?

B. around 40° with a light intensity of 250 lux

A. temperature around 20° with a light intensity of 50 lux

C. temperature around 60° with a light intensity of 125 lux

D. temperature around 100° with a light intensity of 250 lux

Which model below correctly demonstrates energy transfer from light energy into stored chemical energy during photosynthesis?

D). 6CO2 + 6H2O ------> C6H12O6 + 6O2 (Sunlight energy)

A). CO2 + H2O ------> C6H12O6 + O2 (Sunlight energy)

B). C6H12O6 + 6O2 ------> 6CO2 + 6H2O (Sunlight energy)

C). C6H12O6 + O2 ------> CO2 + H2O (Sunlight energy)

Which statements are not true according to Figure 1 and Figure 2? Choose TWO.

A. As long as all other variables remain constant, as temperature increases, the rate of photosynthesis increases.

C. As long as all other variables remain constant, increasing light intensity, increases the rate of photosynthesis up to a point and then decreases.

B. As long as all other variables remain constant, as temperature increases, the rate of photosynthesis increases up to a point and then decreases.

D. As long as all other variables remain constant, increasing light intensity results in an increased rate of photosynthesis until the maximum rate of photosynthesis has been reached under those conditions.

A student performed an experiment to determine the effects of light intensity on the rate of photosynthesis in a plant. Which graph should the student use to plot his data?

B. Effect of Light Intensity on Photosynthesis (Graph: Oxygen Production vs Light Intensity)

A. Effect of Light Intensity on Photosynthesis (Graph: Light Intensity vs Oxygen Production)

C. Effect of Light Intensity on Photosynthesis (Graph: Carbon Dioxide Production vs Light Intensity)

D. Effect of Light Intensity on Photosynthesis (Graph: Light Intensity vs Carbon Dioxide Production)

Which of the following statements explains why viruses are able to reproduce only inside host cells instead of being able to reproduce on their own?

D. Viruses lack the cellular machinery needed to make copies of their genetic material.

A. Viruses cannot function at temperatures other than 98.6 degrees F.

B. Viruses lack spindle fibers that correctly align chromosomes for division.

C. Viruses are too small to effectively make copies of themselves on their own.

A scientist studied how a catalyst affects the rate of a chemical reaction. The data table shows the scientist’s results. Amount of Catalyst (mg) | Reaction Time (s) 10 | 60.3 20 | 47.7 30 | 31.8 40 | 22.6 Which statement correctly describes a pattern in the data?

C. The more catalyst added, the faster the rate of the reaction.

A. The catalyst did not affect the rate of the reaction.

B. The more catalyst added, the slower the rate of the reaction.

D. If 50 mg of catalyst were added, the reaction would take less than 22.6 seconds.

Which of the following examples illustrates osmosis?

A. Excess water in waste is taken in by the cells of the large intestine.

B. An organism drinks water because it is thirsty.

C. Enzymes in saliva begin to digest starch in the mouth.

D. Nerve cells release calcium to muscle cells.

Some cells, such as human nerve and muscle cells contain many more mitochondria than do other cells, such as skin cells. Why do some cells have more mitochondria than others?

B. The cells store more nutrients.

C. The cells degrade more proteins.

D. The cells divide more frequently.

Like complex carbohydrates, proteins are biomolecules that serve many functions and can be chemically broken down and restructured. Both proteins and complex carbohydrates are which of the following?

A. Polymers of smaller subunits

A sodium-potassium pump within a cell membrane requires energy to move sodium and potassium ions into or out of a cell. The movement of glucose into or out of a cell does not require energy. Which statement best describes the movement of these materials across a cell membrane?

B. Sodium and potassium ions move by active transport, and glucose moves by facilitated diffusion.

A. Sodium and potassium ions move by active transport, and glucose moves by osmosis.

C. Sodium and potassium ions move by facilitated diffusion, and glucose moves by osmosis.

D. Sodium and potassium ions move by facilitated diffusion, and glucose moves by active transport.

A tomato plant in a greenhouse was found to be infected with tobacco mosaic virus. A few weeks later, nearby plants were also found to be infected with the virus. Which of the following best describes how the virus reproduced?

C. The virus used the host plant’s resources and machinery to reproduce.

A. The virus made its own spores.

B. The virus produced seeds in the tomatoes.

D. The virus immediately killed the host plant and was free to reproduce.

Biology Pre-Assessment Test Q1 25-26

Authored by JAHNEESHA WILLIAMS

Science

11th Grade

NGSS covered

Used 20+ times

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following factors affect enzyme activity?

A. temperature and pH only

B. amount of enzyme and substrate only

C. temperature and amount of enzyme only

D. temperature, pH, and amount of both enzyme and substrate

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The glucose produced during photosynthesis is an example of a __.

A. lipid

B. monosaccharide

C. protein

D. nucleic acid

Phototropism in plants is a process where a plant bends towards sunlight or any other light source. Phototropism is a mechanism that is necessary for the survival of the plant. This phenomenon is an example of which characteristic of life?

A. ability to store hereditary information

B. use of cellular respiration for energy release

C. ability to move in response to environmental stimuli

D. living things are made up of cells

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The pictures below show processes that occur in all organisms. Which characteristic of life is depicted in all three pictures below?

A. growth and development

B. use of energy

C. respond to environmental stimuli

D. maintain homeostasis

The projections on the surface of this virus allow the virus to _.

A. move inside a host cell

B. attach to a host cell

C. control a host cell’s DNA

D. signal other viruses to infect a host cell

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Phytoplankton are producers that can live in pond ecosystems. The number of phytoplankton in a pond can be regulated by water temperature, amount of sunlight, water depth, and nutrient load of surface water. Carbon dioxide production in pond water is being studied by researchers because carbon dioxide and water combine to form weakly acidic carbonic acid.

A. Photosynthesis will decrease, which will result in an increased amount of carbon dioxide in the pond and a decrease in pond acidity.

B. Photosynthesis will decrease, which will result in a release of carbon dioxide by the phytoplankton and an increase in pond acidity.

C. Photosynthesis will increase, which will cause the phytoplankton to absorb more carbon dioxide, resulting in a decrease in pond acidity.

D. Photosynthesis will increase, which will cause the phytoplankton to absorb more carbon dioxide, resulting in an increase in pond acidity.

Which best describes the relative functions of this large molecule? Choose TWO.

A. energy production

B. energy storage

C. genetic transmission

D. structure component

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