Cells & energy lecture 2W

What are 3 things your body uses energy for

Movement, growth & repair, maintaining body functions

What is energy?

The ability to do work or cause change

What is the term for all the chemical reactions occurring within an organisms cells?

Metabolism

What are enzymes and why are they important to cells?

Enzymes are proteins that speed up chemical reactions, enzymes make things easier

What is ATP, and why do cells use it

ATP is: adenosine triphosphate, its a tiny punch of energy

Equation for cellular respiration

Food + O2 = ATP + CO2 + H2O

What does your body do with glucose if it isn’t immediately needed?

1.) store them as glycogen (shortterm storage in liver/muscles)

2.) convert excess energy to fat (longer-term energy storage)

why is oxygen important for cellular respiration?

It helps cells produce ATP, the main form of useable energy for the cell

What are macronutrients and what are some examples?

Provide energy and or building materials. (Carbs, Fats, proteins)

What are micronutrients and what are some examples?

they are vitamins/minerals. (Vitamin C, Iron)

Why are vitamins and minerals important to your body

they don’t provide calories but they help the body perform chemical reactions & maintain function

Equation for photosynthesis

CO2 + H2O + Sunlight = glucose + O2

What is the difference between an autotroph and a heterotroph

A heterotroph gets organic molecules by consuming other organisms or organic material. An autotroph makes organic molecules using energy from sunlight or chemical sources.