Question

multiple choice: identify the choice that best completes the statement or answers the question.

1. the equation for the chemical reaction in cellular respiration is glucose + oxygen → carbon dioxide + water + atp. what are the reactant(s)?

a. carbon dioxide and water c. water
b. glucose d. glucose and oxygen

1. movement of water from an area of low solute concentration to high solute concentration is called _

a. simple diffusion c. osmosis
b. active transport d. facilitated diffusion

1. shivering when cold is the body’s way of trying to get back to a set point. which of the following is true of shivering?

a. stimulates muscle contractions to generate heat; which is negative feedback
b. stimulates muscle contractions to generate heat; which is positive feedback
c. creates atp, which is negative feedback
d. creates atp, which is positive feedback

1. which structure is the site of cellular respiration and what important molecule does it produce?

a. chloroplasts, glucose c. chloroplast, atp
b. mitochondrion, atp d. mitochondrion, oxygen

1. glucose mostly moves from your blood into your cells. what is the reason for this?

a. your cells create glucose during cellular respiration.
b. your cells create oxygen during cellular respiration.
c. your cells need glucose to create atp.
d. glucose gets into your blood as a product of cellular respiration.

1. a red blood cell from a person is placed in a hypotonic solution. what will happen to the cell?

a. it will take in water & swell c. it will stay the same
b. it will lose water & shrink d. it will crystalize

1. which answer is the correct balanced equation for cellular respiration?

a. c₆h₁₂o₆ + 6o₂→ 6co₂ + 6h₂o + 36atp
b. 6co₂ + 6h₂o + light → c₆h₁₂o₆ + 6o₂
c. c₆h₁₂o₆ + 6o₂→ 6co₂ + 6h₂o + light
d. c₆h₁₂o₆ + co₂→ o₂ + 6h₂o + atp

1. tasha is testing the effect of blue - colored light vs white light on the growth of tomato plants. which is the independent variable in this experiment?

a. light color c. amount of light
b. light intensity d. growth of tomato plants

Explanation:

1. In a chemical reaction equation, reactants are on the left - hand side. For glucose + oxygen → carbon dioxide + water + ATP, glucose and oxygen are reactants.
2. Osmosis is the movement of water from an area of low solute concentration to high solute concentration.
3. Shivering stimulates muscle contractions to generate heat as a negative - feedback mechanism to return the body to its set temperature.
4. Mitochondria are the site of cellular respiration and produce ATP.
5. Cells need glucose to create ATP through cellular respiration, so glucose moves from blood into cells.
6. In a hypotonic solution, water moves into the cell (red blood cell in this case), causing it to take in water and swell.
7. The balanced equation for cellular respiration is C₆H₁₂O₆ + 6O₂→ 6CO₂ + 6H₂O + 36ATP.
8. The independent variable is the variable that is changed or manipulated in an experiment. Here, the light color (blue - colored light vs white light) is being changed.

Answer:

1. d. glucose and oxygen
2. c. osmosis
3. a. Stimulates muscle contractions to generate heat; which is negative feedback
4. b. mitochondrion, ATP
5. c. Your cells need glucose to create ATP.
6. a. It will take in water & swell
7. a. C₆H₁₂O₆ + 6O₂→ 6CO₂ + 6H₂O + 36ATP
8. a. light color