4.2 Photosynthesis

Photosynthesis occurs in a plant cell's

• ribosomes

• cell wall

• nucleus

• chloroplasts

Humans see different wavelengths as

• colour

• waves

• light

• smoke

In Photosystem I, what is pumped into the thylakoid?

• electrons

• hydrogen ions

• water molecules

• ATP

The light-independent reactions of photosynthesis is also known as

As ATP synthase rotates, what group is added to ADP to make it ATP?

• oxygen

• adenosine
• phosphate

• glucose

Suppose you seal a house plant in a transparent glass container. What about the scenario would lead to the plant's death?

• a lack of oxygen

• a lack of sugars

• a lack of light

• a lack of carbon dioxide

Answer explanation

1. Not oxygen, as oxygen is a PRODUCT of photosynthesis, NOT a reactant

3. Not sugars, as sugar is caused by a LACK of ANOTHER resource

5. Not light, as the GLASS allows the light to come through

Its CO2!!!

What option is a light wavelength that chlorophyll does not absorb?

• violent

• green

• yellow

• red

The liquid surrounding thylakoids is called

ATP and NADPH are used by light dependent reactions to make stable

• protein

• amino acids

• carbohydrates

• nucleotides

During the process of Photosystem I, NAPD+ is changed into NADPH. NADPH has a neutral charge. What reactants are supposed to form the product?

• an electron and two hydrogen ions

• an electron and one hydrogen ion

• two electrons and a hydrogen ion

• two electrons and two hydrogen ions