Science Test Unit 2
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Science Test Unit 2
Suzanna Arul Science test two
Just study guide to science.
Where does the energy for human metabolism come from?
Write the chemical equation that is used to summarize photosynthesis.
O(yields w/ sunlight) C
Light absorbing substances are called?
Pigments found in plants include chlorophyll a, chlorophyll b, and __________
Electrons that leave the chlorophyll molecules are replaced by electrons from split _____ molecules
ATP and ______ are produced in the second stage of photosynthesis
The series of molecules through which excited electrons are passed down a thylacoid membrane is called an ______
ATP is made from ADP by adding a(n) ___________ group to a molecule of ADP
What is the role of the Calvin cycle in photosynthesis?
It fixes the carbon in CO
to make sugar
What are three enviromental factors that affect photosynthesis?
sunlight, water, and carbon
Cells harvest the energy in organic compounds to make ATP through a process called ____________
Metabolic processes that require oxygen are called ________ process.
The breakdown of glucose to pyruvate is called
The primary fuel for cellular respration is ___________
In the first stage of cellular respiration, glucoseis broken down to ____________
2 pyruvic acids
How is acetyl-CoA produced?
pyruvate is oxidized
What are the product of the electron transport chain in the second stage of cellular respiration?
When oxygen is not present, the _______ does not function
Two types of fermation are:
alcohol and lactic acid
The role of fermentation in cellular respiration is to recycle ________.
lactic acid back to glucose
Why do cells produce more ATP under aerobic conditions than under anaerobic conditions?
More energy is created for the ETC to occur
What does ETC stand for?
Electric Transport Chain
Organisms that make their own food
Where is the site of the photosynthesis?
Where does the Kreb's Cycle occur?
What is the Glucose formula?
Which process requires energy aerobic or anerobic?
ATP does what?
What does ADP stand for?
What is glycolysis?
The anaerobic process of splitting glucose and forming two molecules of pyruvic acid
How many ATP are produced within each of the following:
2,2, & 32
Define what the Golgi Apparatus is.
It sorts,packages & transports cells
*Like a post office!
Define what a vacuole is.
Stores food, water, wastes, and other materials
Plants usually have one large vacuole while animals have many small ones.
*Vacume! It stores!
What are chloroplasts filled with?
What does a mitochondria do?
Creates energy in the form of ATP
What does a smooth ER do?
What does a rough ER do?
What do Lysosomes do?
Cleans up the cell
*think of lysol, it cleans
What does a nucleus do?
Controls all cell functions, where the DNA is located
Define the main function of Ribosomes
To make protiens. Either attached to Rough ER of free floating. Looks like little dots.
*Mmm ribs, makes protien!
Describe the Cell Wall
It is outside of the cell membrane and protects the cell. Only found in plants.
Describe the cell membrane.
It protects the cell, keeps everything inside the cell, and allows materials in and out.
Where does light reaction occur?
What happens in light raction?
Light energy is converted into chemical energy
What do photosystems do?
They absorb photons in the thylakoid membrane
Where does the Calvin cycle occur?
What is carbon fixation?
Carbon being fixed into a useful form
What are stomata?
Pores on the underside of leaves to let carbon dioxide in and oxygen and water vapor out.
What does photosynthesis create?
Glucose and oxygen
Where does photosynthesis take place?
What occurs in the matrix of the mitochondria?
What does the Krebs Cycle do?
Breaks down pyruvate and makes 2 ATP