GenBio1 v1

A group of students is exploring how energy is transferred within ecosystems. They notice that some organisms can create their own food while others need to consume other living things. Which statement accurately describes autotrophs in this case?

• Organisms that can produce their own food

• Organisms that live in symbiosis with plants

• Organisms that consume other organisms for food

• Organisms that only survive in aquatic environments

What is the primary purpose of cellular respiration?

• To produce the oxygen that we breathe

• To produce glucose that is needed for growth

• To break down food to produce ATP (cell energy).

• To break down water to produce electrons that drive the electron transport chain

Why do hydrogen ions pass through ATP synthase?

• They move through using mana.

• They move high to low concentration actively.

• They move from high to low concentration passively.

• They move from high to low concentration using energy.

What is the name of the enzyme that hydrogen ions pass through to generate ATP?

• STEM

• ATP synthase

• Phosphatase

• Phosphofructokinase

A botanist is examining the structure of chloroplasts and their function in photosynthesis. Which of the following accurately describes the relationship between the stroma and granum in a chloroplast?

• Stroma and granum are both types of stomata.

• Granum is the organelle where photosynthesis occurs.

• Stroma is the green pigment, and granum is the colorless fluid.

• Stroma is the colorless fluid surrounding the granum within the chloroplast.

What is the accurate chemical equation for photosynthesis?

• 6O2+6H2O→C6H12O6+CO2

• 6CO2+6H2O→C6H12O6+6O2

• C6H12O6+O2→6CO2+6H2O

• 6CO2+6O2→C6H12O6+H2O

Stomata are best defined as:

• The main organ of photosynthesis in plants.

• The organelle where photosynthesis takes place.

• The green pigment that gives plants their distinct color.

• Tiny openings or pores in plant tissue that allow for gas exchange.

Which of the following statements about chloroplasts is accurate?

• They contain the red pigment called hemoglobin.

• They are the main organ of photosynthesis in plants.

• They are tiny openings in plant tissue for gas exchange.

• They are the organelle where photosynthesis occurs.

The light-dependent reaction is:

• The process where RuBP combines with CO₂ to form 3-phosphoglycerate.

• Also known as the Calvin Cycle and produces glucose without the need for light.

• The stage where chlorophyll absorbs energy from the sun (photons) and occurs in the stroma of the chloroplast.

• It involves two groups of light-absorbing molecules, Photosystem I and Photosystem II, located in the thylakoid membrane.

The light-independent reaction is:

• It is the process where water molecules are split to produce oxygen gas.

• It involves the excitation of electrons in Photosystem I and II by light energy.

• It occurs in the granum and requires direct sunlight to produce ATP and NADPH.

• It consists of a cyclical series of reactions that use enzymes to assemble sugar molecules from carbon dioxide and products of the light-dependent reaction.