BiochemistryPhotosynthesisCellular Resp. Carbon CycleEnergy Flow

True or False: Atoms are made out of molecules.

False (no, molecules are made out of atoms)

Name any two molecules.

(open ended question)

Name the two molecules (reactants) needed for photosynthesis.

CO 2 & H 2 O

In the following equation, how many molecules are present total, in the products? 2 SO 2 + 2H 2 O --> 2 H 2 SO 4

2

Name the four kinds of macromolecules (also known as organic compounds) important for living organisms.

Carbohydrates Lipids (or fats) Proteins Nucleic Acids

What is the term used for organisms that can carry out photosynthesis?

Autotrophs (or producers)

What is the name of the structure where photosynthesis takes place in plants?

chloroplast

State the equation for photosynthesis, including the coefficients.

6 CO H 2 O ---> 6O 2 + C 6 H 12 O 6

In photosynthesis, _________ energy is absorbed by the leaves and through photosynthesis, is converted into __________ energy.

Light energy Chemical energy

Why is photosynthesis important for nearly all living things on earth?

Because this process provides the energy for nearly all life forms; it is the basis of the food web.

What is the usable form of energy needed for cells to carry out their functions?

ATP

What is the name of the structure where cellular respiration takes place in cells?

mitochondria

State the equation for cellular respiration, including the coefficients.

6O 2 + C 6 H 12 O 6 ---> 6 CO H 2 O + ATP

What types of organisms carry out aerobic cellular respiration (name 3 kingdoms)?

Nearly all life forms (animals, plants, fungi, etc.)

Why do plants carry out cellular respiration when they have already made glucose through cellular respiration?

Because they need to convert the glucose into a usable energy form (ATP).

What is the name of the molecule that contains carbon and is found in the atmosphere and is taken up by plants?

CO 2

Daily Double!

What is a biogeochemical cycle?

Chemicals (molecules) that go from the earth into living organisms and then back into the earth again.

Through what process would carbon containing molecules get from plants into animals?

Consumption (eating)

Name three ways humans influence the carbon cycle.

1) burning of fossil fuels 2) deforestation 3) (open ended)

Trace one complete pathway of the carbon cycle, naming the carbon containing molecules, the processes involved in this pathway, and where the carbon molecules can be found (i.e. in earth or in what organism?)

(open ended question)

What is the original source of energy for nearly all ecosystems on earth?

The sun

What is the name of the trophic level that is at the bottom of a food web (and provides energy for the rest of the organisms in the ecosystem)?

(Primary) producers

Daily Double

What is the name of the trophic level that consists of herbivores (organisms that eat plants)?

Primary consumers

Explain the difference between a food chain and a food web.

A food chain only follows one path, i.e. from food to eater to next eater. A food web shows all organisms in an ecosystem and the many different food sources for the many different organisms.

Energy is said to be "lost" to the environment, and is not usable for that organism. What form is this lost energy in?

Heat