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Science 7 Cell res.

VWA scince cell respiration quiz 7

QuestionAnswer
Why do living things need energy: to make new cells, grow and repair, move, STAY ALIVE.
Animals are: energy consumers.
What do animals need energy for: growth, reproduction, active transport, movement, temperature control.
Living things need energy: 24/7
Where does this energy come from? from the food.
Energy is stored in: organic molecules.
How do they get this energy from the molecules: they eat the food, and break it down.
Thye digest food for what reasons? to get fuel and they are the building blocks of more materials.
Why do cells need energy? They are the smallest living thing and they need energy to make new cells.
Cell energy: from food 24/7 needed to carry out life functions....
Functions of a cell: grow, repair, divide, homeostasis, new cell parts, copy DNA, make products.
Carbs are; the cells food-glucose
We need to ______________ to make energy: burn fuels
What are 2 ways to make energy: combustion and aerobic respiration
Combustion: making energy by burning fuels
The chemical equation carbohydrates+O2---> Co2+H2O+ heat
Aerobic respiration takes place in: living things
makes: ATP and some heat
The chemical equation: carb. +O2--->ATP+Co2+H2O+ (heat)
Similarities between both steps: Both create a form of energy Both have carbs Both have CO2, H2O and amount of heat.
Differences: combustion occurs in one big step. cell respiration occurs in many small steps.
What is the energy source in C.R.: ATP
What is the energy source in C: heat?!?!?!?!?
ATP stands for: Adenosine Tri Phosophate
When ATP is broken: energy is given off
Cellular Res. is the counter part to: photosynthesis.
Breaks down food to create: ATP
Where does this occur: In the mitochondria or the power house.
In order to create energy, the cell needs; oxygen-"aerobic" respiration
The 2 steps are: glucose and oxygen go into the mitochondria ATp is made and released
Before food is broken down: glucose is broken down.
What do we need to make energy the "furnace" for energy-mtochondria
What is the fuel food-carbohydrates, fats, proteins.
What are the helpers: Oxygen and enzymes
The product ATP
the waste products: H2o and CO2
Where is the mitochondria: everywhere in plant and animal cells.
Do plants have a mitochondria and what is it used for: to break down glucose into energy.
Can cells store ATp No they store the foods to make ATP
ATp is a ___________ term energy storage short term
Fuels are __________term energy storages that create ATP long
What if O2 is missing? they can't complete cell respiration-anaerobic respiration or fermentation
2 typpes of fermentation alcohol and lactic acid fermentation
The chemical equation for alcohol fermentation sugar---->alcohol+CO2+ATp
If there is no oxygen no mitochondria is needed
fermentation occurs in _____animals...why? in small animals because it makes very little energy and that would not be enough energy for a large animal.
Alcohol fermentation contains: yeast and sugar.
A. Fermentation creates: beer, wine, and bread, etc.
Lactic acid fermentation contains: bacteria and sugar.
Cells store energy in _______ and "withdraw" _______ by _____ food, energy, breaking glucose.
2 stages of CR in the cytoplasm glucose is broken down, in the mito. it is broken down even more with the help of oxygen to create energy.
Co2 created in ferm. creates: gas pockets in bread, causing it to rise. bubbles in beer.
Lactic acid causes muscles to: feel sore while running because when you cant get enough energy, ferm. occurs using lactic acid.
Created by: giugiu427
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