7th Grade Study Guide

1. What are the two major reactions that take place in Photosynthesis?

Light dependant reaction and light-independent reactions

1. What is the equation for photosynthesis?

6C02+6H20+Sunlight=C6H12O6+602

What are the major steps involved in cellular respiration?

1) Glycosis 2) Krebs Cycle 3) Electron Transport Chain

Where do the major reactions of photosynthesis take place? (name the organelle AND the structure inside the organelle where each takes place)

Light Dependent-Thylakoids in the Chloroplasts

   Light Independent- Stroma in the Chloroplasts

What is the equation for cellular respiration?

C6H12O6+6O2=6CO2+6H2O+ATP

Where in the cell does cellular respiration take place? (name the organelle AND the specifically where each step takes place)

Glycolysis- in the Cytoplasm

  Krebs cycle- in the Mitochondria

   Electron Transport Chain- in the Mitochondrial Membrane

What are the reactants for photosynthesis

Carbon dioxide, water, and sunlight

What are the reactants for cellular respiration

Glucose and Oxygen

What are the products of photosynthesis?

Glucose and oxygen

What are the products of cellular respiration?

Carbon dioxide, water, and chemical energy

How many net atp are made during glycolysis?

2 ATP

How many net atp are made during the electron transport chain

34 ATP

How many net atp are made during the krebs cycle?

2 ATP

What’s another name for the krebs cycle?

citric acid cycle

What’s another name for light independent reactions?

calvin cycle

How much atp do you have after one cycle of cellular respiration

38 atp

define biodome

a closed ecosystem made by humans

What’s the definition of an ecosystem?

All the biotic and abiotic things interacting in a particular area

What’s the definition of a system?

A set of interacting parts forming a complex whole

What’s the purpose of a biodome?

To replicate earth life on other planets

define molecule

a group of atoms joined in a particular way

define carbon

a type of atom that makes up molecules such a as CO2 and energy storage molecules

Where do producers get their carbon from?

    Abiotic matter like water air

What’s the definition of starch?

   Only made by producers and used as an energy storage molecule to be used at later times. Made of many ESM molecules connected together

What’s the definition of abiotic matter?

Matter that makes up the nonliving parts of an ecosystem such as air, water, and rocks

What are primary consumers?

 Only eats producers

What are secondary consumers?

Must eat primary consumers but can also eat producers

What are tertiary consumers?

 Something that eats secondary consumers, and can also eat tertiary consumers, primary consumers, and producers

What’s the definition of glucose?

An ESM made of carbon, hydrogen, and oxygen molecules 

What’s the definition of carbon dioxide?

Molecule made of carbon and oxygen molecules

How can polluted water prevent underwater plants from performing photosynthesis?

  Because energy from the sun won’t be able to reach the plant for it to perform photosynthesis 

define fat

an ESM made of fatty acids

What’s the definition of photosynthesis?

The process by which plants and other producers use energy from sunlight to change carbon dioxide and water into oxygen and glucose

Where is carbon found in an ecosystem?

Carbon is found in the air, water, and soil 

What is the definition of energy?

The ability to make things move or change

What is the definition of biotic matter?

Matter that makes up the living organisms of an ecosystem

What’s the definition of producers?

An organism that can make its own energy storage molecules

What are reactants? What are products?

  Reactants are something that is used in a chemical reaction or process

           Products are what you get when you complete a reaction or process

What is the definition of a chloroplast?

The part of an organelle where photosynthesis happens

The amount of life that can exist in an ecosystem depends on what?

How much sunlight it receives

What is unique about glucose by comparison to other ESMs? 

it can make other ESMs

What is glycogen and how is it different from starch?

Glycogen is an ESM and it is different because it is only made by consumers and decomposers

What atoms are all esms made of?

Carbon, Hydrogen, and Oxygen

Name two things that the esm fat is used for.

Used for long-term energy storage and to form fatty acids.

What is a decomposer’s purpose? Why is it crucial to the success of an ecosystem?

To break down dead matter and get ESMs for themselves. They release C02 and make nitrogen available in the ecosystem

How do decomposers get esms?

Through breaking down dead matter

What element (other than carbon)  is a crucial nutrient for plant growth and is released by decomposing dead matter?

Nitrogen

What is the definition of cellular respiration?

The chemical reaction between oxygen and glucose that releases energy into cells

1. In a closed ecosystem if carbon ______ in one part of the system, then it must _______ somewhere else.

increased, have decreased

what is the definition of fossil fuels

When humans put carbon dioxide into the atmosphere we burn fuels from deep underground.

What do fossil fuels release when burned?

Carbon dioxide

Earth is a ______ ecosystem

closed

fossil fuels are what type of matter

carbon rich

How many atoms of carbon are required in the inputs of photosynthesis

6

How many atoms of hydrogen are in the reactants of cellular respiration

12