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Multiple Choice

Enzymes are

• Lipids

• Protein

• Carbohydrates

• Nucleic Acids

Multiple Choice

Enzymes are responsible for-

• Speeding up reactions

• Giving the body energy

• Slowing down reactions

Multiple Choice

Which of these is most likely an enzyme?  

• Sucrose

• Galactose

• Fructose

• Amylase

Multiple Choice

Letter D...

• active site

• enzyme

• substrate

• products

Multiple Choice

Letter B...

• active site

• enzyme

• substrate

• products

Multiple Choice

Letter c...

• active site

• enzyme

• substrate

• products

Multiple Choice

Each enzyme only has 1 substrate that will fit its active site.  What is this called?

• reusablility

• denaturation

• specificity

• fragility

Multiple Choice

What is a substance called if it speeds up a chemical reaction?

• reusable

• catalyst

• specific

• fragile

Multiple Choice

An enzyme speeds up a chemical reaction in the cell but can only be used once.  True or False? 

• true

• false

Multiple Choice

After the enzyme and substrate bind together and perform the reaction, what does the substrate become?

• a substrate
• an enzyme
• a product
• an active site

Multiple Choice

What happens when enzymes are heated to a high temperature?

• The enzymes die.

• The shapes of the enzyme are altered denature

• The enzymes' amino acid sequence changes.

• The enzymes remain the same

​Cell Transport

Multiple Select

The two broad categories of cell transport are ...........

(select all correct answers)

• passive transport

• road transport

• food transport

• active transport

Multiple Choice

In passive transport, .............

• energy is required

• energy is not required

Multiple Choice

In active transport, .............

• energy is required

• energy is not required

​Cell Transport

Cell transport is movement of materials across cell membranes.

​

Two Types:​

1. Passive transport

   ​

2. Active transport

​Passive Transport

​The movement of substances across the cell membrane without using energy from the cell.

​Examples:

1. diffusion

2. facilitated diffusion

3. osmosis.

​​

​(does not require energy​)

​​Passive Transport

​Diffusion

​

​

​Experiment

(Demonstrating diffusion)

​

• ​Hypothesis: Particles move from an area of high concentration to an area of low concentration.

  ​

1. Carefully place about 2ml of dye solution at the bottom of a transparent container of water by using the dropper.

   ​

2. Observe and record what happens after 5 minutes​.

   ​

3. What is your conclusion?

Open Ended

What is your observation after the 5 minutes?

Open Ended

What is your conclusion?

​Diffusion is the movement of particles from a area of higher concentration to an area of lower concentration.

​beginning

​after 5 mins

Examples of diffusion in everyday life:​​

1. The smell of perfumes or incense sticks.

2. Opening the soda or cold drinks bottle and the CO₂ diffuses in the air.

3. Dipping the tea bags in hot water will diffuse the tea in hot water.

4. Small dust particles or smoke diffuse into the air and cause air pollution.

5. Breathing and taking oxygen into the body and diffuses in our blood.

Examples of diffusion in everyday life:​​​

6. Transport of Biomolecules and Minerals in Plants and Animals.

7. Sugar gets dissolved evenly and sweetens the water without having to stir it.

8. Removal of Waste Substances and Toxins from our Body.

9. Gas exchange in the lungs.

10. Diffusion of waste products, salt, and water in the kidneys

​Cell Transport

Multiple Select

The two broad categories of cell transport are ...........

(select all correct answers)

• passive transport

• road transport

• food transport

• active transport

Multiple Choice

In passive transport, .............

• energy is required

• energy is not required

Multiple Choice

In active transport, .............

• energy is required

• energy is not required

​Cell Transport

Cell transport is movement of materials across cell membranes.

​

Two Types:​

1. Passive transport

   ​

2. Active transport

​Passive Transport

​The movement of substances across the cell membrane without using energy from the cell.

​Examples:

1. diffusion

2. facilitated diffusion

3. osmosis.

​​

​(does not require energy​)

​​Passive Transport

​Diffusion

​

​

​Experiment

(Demonstrating diffusion)

​

• ​Hypothesis: Particles move from an area of high concentration to an area of low concentration.

  ​

1. Carefully place about 2ml of dye solution at the bottom of a transparent container of water by using the dropper.

   ​

2. Observe and record what happens after 5 minutes​.

   ​

3. What is your conclusion?

Open Ended

What is your observation after the 5 minutes?

Open Ended

What is your conclusion?

​Diffusion is the movement of particles from a area of higher concentration to an area of lower concentration.

​beginning

​after 5 mins

Examples of diffusion in everyday life:​​

1. The smell of perfumes or incense sticks.

2. Opening the soda or cold drinks bottle and the CO₂ diffuses in the air.

3. Dipping the tea bags in hot water will diffuse the tea in hot water.

4. Small dust particles or smoke diffuse into the air and cause air pollution.

5. Breathing and taking oxygen into the body and diffuses in our blood.

Examples of diffusion in everyday life:​​​

6. Transport of Biomolecules and Minerals in Plants and Animals.

7. Sugar gets dissolved evenly and sweetens the water without having to stir it.

8. Removal of Waste Substances and Toxins from our Body.

9. Gas exchange in the lungs.

10. Diffusion of waste products, salt, and water in the kidneys

Multiple Choice

Plants use the following reactants for the light reaction

• Water and CO2

• Water and NADPH

• Water and NADP+

• NADPH and ATP

Multiple Choice

Photosynthesis goal is to

• convert light energy into glucose energy

• use light energy to make oxygen gas

• convert sugar energy into ATP

• convert sugar energy into oxygen gas

Multiple Choice

Rubisco is important in which step of photosynthesis

• energizing the electrons in chlorophyll

• carbon fixation when CO2 is connected to RUBP during calvin cycle

• regeneration phase as RUBP is made during calvin cycle

• reduction of the carbon chain during the calvin cycle

Multiple Choice

If the proton (H+) pump in the thylakoid was not working which molecule could not be made during the light reaction?

• NADPH

• ATP

• Water

• Oxygen gas

Multiple Choice

The NADP+ is

• oxidized during the light reaction

• reduced during the light reaction

• oxidized during the Calvin cycle

• reduced during the Calvin cycle

Multiple Choice

Which of the following would have the least affect on photosynthetic rate?

• increase the temp from 20 C to 30 C

• increasing the CO2 from 400 ppm to 600ppm

• increasing the light intesity from 40 Watts to 60 Watts

• increasing the amount of O2 from 20% to 30% in the air

Multiple Choice

Plants obtain CO2 into the chloroplast by

• active transport

• diffusion

• facilitated diffusion

• endocytosis

Multiple Choice

Photosystems are made of

• chloroplasts

• chromosomes

• chlorophyll

• cytoplasm

Multiple Choice

ATP is made during the light reaction using all of the following EXCEPT

• proton pump

• hydrogen ion gradient

• electron energy from photosystem II

• NADPH donating electrons

Multiple Choice

What is FALSE about the calvin cycle

• uses the light reactions products

• produces a three carbon sugar (G3P)

• produces carbon dioxide

• produces NADP+

Multiple Choice

During noncyclic photophosphorylation all of the following occur EXCEPT

• ATP is made using electron energy that will leave on NADPH

• results in oxygen gas being produced

• water is split (photolysis)

• electrons from photosystem 1 return back to photosystem 1

Multiple Choice

Photorespiration involves

• the production of oxygen gas during the break down of sugar

• the breakdown of sugar when CO2 levels are low.

• the production of massive amounts of ATP in the thylakoid

• water being pulled out of the plant

Multiple Choice

Why does photorespiration occur?

• stomata are closed and CO2 levels are too low.

• stomata are closed and O2 levels are too low.

• stomata are open and too much water is leaving the plant

• stomata are open and the plant receives too much CO2

Multiple Choice

What does a C4 plant do?

• stores CO2 in a separate cell from its photosynthetic cell during the day

• stores CO2 in a vacuole during the night.

• can't store CO2 so it sufferes photorespiration

• can't store CO2 so it speeds up cellular respiration in order to make more CO2

Multiple Choice

Plants that store CO2 at night as an acid in a vacuole are called

• C3 plants

• C4 plants

• CAM plants

Multiple Choice

Which plant LACKS CO2 storage method

• C3

• C4

• CAM

Multiple Choice

What happens to the oxygen levels if a plant were left in the dark over night?

• go up due to photosynthesis

• go down due to cell respiration

• stay the same since stomata are closed

Multiple Choice

Which plant would have the most oxygen produced in 1 hour?

• plant given red light only

• plant given blue light only

• plant given white light

• plant given green light only

Multiple Choice

An increase in CO2 in the air would most likely

• increase photosynthesis

• increase cell respiration

• increase photorespiration

• increase transpiration

Multiple Choice

The calvin cycle requires what substances from the light reaction?

• CO2 and Water

• light and CO2

• ATP and NADPH

• glucose and O2

Multiple Choice

Why does the light reaction perform cyclic photophosphorylation? (where ATP is made with electrons that return to where they started)

• because the stomata are closed and CO2 levels are low

• because the Calvin cycle runs out of ATP

• because the Calvin cycle runs out of NADPH

• because there is no water to donate electrons to those that are leaving for the Calvin cycle

Multiple Choice

What is one function of the other pigments  besides chlorophyll, in the chloroplast?

• to block damaging wavelengths of light
• to absorb different wavelengths than the chloroplasts
• to provide different colors to the leaves
• to transfer energy to a separate photosystem beside the one using chlorophyll a and b.

Multiple Choice

What is the primary function of the light reactions of photosynthesis?

• To produce glucose
• To produce NADPH and ATP
• To use ATP
• To produce RuBP

Multiple Choice

What supplies the electrons that are lost in PS I?

• the electrons from PS II
• water
• glucose
• oxygen

Multiple Choice

What is the function of NADP+?

• It absorbs light
• It is an electron carrier
• It is a light-reflecting pigment
• It acts as long-term energy storage

Multiple Choice

Which of the following molecules is not needed for the Calvin Cycle?

• CO₂
• ATP
• NADPH
• H₂O

Multiple Choice

Green plants reflect ________ light.

• Red
• Green
• All
• Red and Violet

Multiple Choice

The light reactions occur in the ________ and the dark reactions take place in the ________.

• Chloroplast / thylakoid membrane
• stroma / thylakoid
• mesophyl / stomata
• thylakoid membrane / stroma

Multiple Choice

Where does the carbon come from that is used to form glucose?

• The soil
• CO₂ in the air
• From other carbohydrates
• Calvin Cycle

Multiple Choice

Where is glucose synthesized

• Photosystem II
• Photosystem I
• Calvin Cycle
• Glycolysis

Multiple Choice

Where does the Calvin cycle take place?

• stroma of the chloroplast
• thylakoid membrane
• outer membrane of the chloroplast
• interior of the thylakoid membrane

Multiple Choice

When oxygen is released as a result of photosynthesis, it is a direct by-product of

• reducing NADP+
• splitting water molecules
• chemiosmosis
• electron transfer in photosystem II and I

Multiple Choice

What is the primary function of the Calvin cycle?

• regenerate ATP for use in the light reactions of photosynthesis
• produce carbon dioxide for use in the light reactions of photosynthesis
• produce oxygen by oxidizing water
• produce simple sugars from carbon dioxide

Multiple Choice

Plants with the largest amount of which pigment will be best suited for growing conditions where light has a green hue.

• Chlorophyll A
• Chlorophyll B
• Carotenoids
• A combination of all 3

Multiple Choice

How many sugar molecules are produced from every six molecules of carbon dioxide that enter the Calvin cycle?

• 1
• 3
• 6
• 12

Multiple Choice

The H+ concentration gradient is used to 

• make NADPH
• split a water molecule
• generate ATP
• form water