What does the body use first as a main source of quick energy?

The body would use all of them for immediate energy

Which answer choice below best summarizes the order in which lipids and carbohydrates are broken down by the human body to release energy?

Consumption, digestion, bloodstream, cells, energy released

Energy released, cells, digestion, consumption, bloodstream

Consumption, cells, bloodstream, energy released, digestion

Cells, digestion, bloodstream, energy released, consumption

In addition to serving as waterproof coverings or as parts of cell membranes, lipids--

store energy for long periods of time

transmit hereditary information

supply immediate energy for chemical reactions

store glucose and other sugars for short periods of time

What will most likely happen if an enzyme is added to a chemical reaction?

The reaction rate will increase.

The equilibrium of the reaction will stay the same.

The reaction rate will decrease.

A good source of quick energy is glucose, but if you don't burn the glucose molecules off, they will become stored as--

starch in plants or glycogen in animals

glycogen in plants or starch in animals

hemoglobin in plants or fat in animals

insulin in plants or DNA in animals

Which of the following statements about the graph is true?

The difference between the graphs shown for Reaction 2 and Reaction 3 is because of the difference in the activation energy of these reactions.

Reaction 2 occurs faster than Reaction 3 because Reaction 2 requires more energy.

Reactant A contains more energy at the beginning of the reaction than product C has after the reaction.

If a particular enzyme works best between a pH of 6 and 8, what might happen if it is exposed to a solution with a pH of 2?

The reaction will slow down or not occur at all due to a change in the structure of the enzyme.

Nothing, it will still function the same.

It will work better than at the pH of 6 or 8.

The enzyme will change in structure but should still work fine.

Which of the following describe the four major groups of organic molecules found in living things?

Carbohydrates, amino acids, proteins, nitrogenous bases

Carbohydrates, monomers, polymers, proteins

Lipids, proteins, enzymes, substrates

Test tube A contained a starch solution and the enzyme amylase. Test tube B contained the enzyme amylase. Test tube C contained a starch solution. After two hours, the contents were analyzed. What do you think the scientist concluded?

The enzyme amylase breaks starch down into sugars.

The enzyme amylase is denatured by starch.

Amylase does not help break down starch.

substance that speeds up a chemical reaction

substance that blocks a chemical reaction

An enzyme acts as a biological catalyst to a chemical reaction by--

lowering the activation energy needed to get the reaction started.

producing the substrates needed for the reaction.

increasing the activation energy needed to get the reaction started.

regulating the pH at which the reaction takes place.

Which statement best summarizes the information show in the graph?

Enzymes decrease the activation energy of the reaction.

Enzymes increase the activation energy of the reaction.

Enzymes decrease the energy level of the products.

Enzymes reverse the direction of the reaction.

Changes in __________ can alter an enzyme's structure and therefore prevent it from working.

Temperature and substrate concentration

Tommy and Becca placed hydrogen peroxide on several food samples and recorded the relative amount of "fizz" that each produced. The fizz was produced by oxygen bubbles released by the action of the enzyme catalase. Which of these if a valid conclusion from their data?

Raw liver produced the most oxygen bubbles, followed by raw potato.

Plant cells produced more oxygen bubbles than animal cells.

Boiled potato and cooked liver produced the most oxygen bubbles.

Cooking the food seems to increase the activity of the catalase enzyme.

The graph shows the effect of temperature on enzyme action. What characteristics do enzymes E 1 , E 2 , and E 3 share?

Their activity is at a low between 15°C and 25°C.

Their activity increases between 20°C and 30°C.

Their activity is greatest between 5°C and 10°C.

Their activity is at a high between 30° and 40°C.

Which of the following statements is true about the components of the membrane?

The tails are hydrophobic while the heads are hydrophilic.

Both components of the phospholipids are hydrophilic.

Both components of the phospholipids are hydrophobic.

The tails are hydrophilic while the heads are hydrophobic.

What most likely happens to E 1 at 27°C?

The enzyme is denatured (shape is changed and no longer functions).

The enzyme increases its activity.

The enzyme uses activation energy.

The enzyme has reached its optimum temperature.

Biochemistry

Authored by Susan Williams

Biology

9th - 10th Grade

NGSS covered

Used 211+ times

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which model represents the structural component of a protein?

Tags

NGSS.HS-LS1-6

NGSS.HS-LS1-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a major characteristic of organic compounds?

They contain 5 atoms.

They contain carbon atoms.

They have a basic ring shape.

They interact with nitrogen.

Tags

NGSS.HS-LS1-6

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

ATP contains energy. Where is the energy stored?

Chemical bonds

Adenine

Ribose

Phosphate atoms

Tags

NGSS.HS-LS2-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Glucose is a building block (monomer) of which organic molecule?

Carbohydrates

Lipids

Nucleic acids

Proteins

Tags

NGSS.HS-LS1-6

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which model represents a lipid?

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which model represents a structural component of DNA?

Tags

NGSS.HS-LS1-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why does one gram of fat have more energy and calories than one gram of carbohydrates?

Fat is first converted into glucose then used for energy.

Carbohydrates are smaller molecules.

Fats have more high energy C-H bonds.

Carbohydrates are too big to be broken down and used for energy.

Tags

NGSS.HS-LS1-7

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Biochemistry

Which model represents the structural component of a protein?

What is a major characteristic of organic compounds?

ATP contains energy. Where is the energy stored?

Glucose is a building block (monomer) of which organic molecule?

Which model represents a lipid?

Which model represents a structural component of DNA?

Why does one gram of fat have more energy and calories than one gram of carbohydrates?

Which of the following is represented by structure X?

What does the body use first as a main source of quick energy?

Which answer choice below best summarizes the order in which lipids and carbohydrates are broken down by the human body to release energy?

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