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Unit 3 Lesson 2 Chemistry Of Life CONCEPTS And SKILLS
Test Description: Building blocks of organisms/Chemical makeup of living things
Instructions: Answer all questions to get your test result.
1) Some dog foods contain corn and wheat that provide the dog with carbohydrates. Why are carbohydrates important to cell processes?
A
They help chemical processes happen.
B
They are a source of energy.
C
They form cell membranes.
D
They make amino acids.
2) Mrs. Amsler explains to her class that hydrogen (H) and oxygen (O) atoms bond to make water (H20). Which is the best description of water?
A
It is an element.
B
It is an atom.
C
It is a cell.
D
It is a compound.
3) What are oxygen and hydrogen when they are not bonded together?
A
single atoms
B
elements
C
cells
D
both atoms and elements
4) What is/are the way(s) the cells in our bodies use lipids?
A
A. to form cell membranes
B
B. to store energy
C
Both A and B.
5) What is/are the way(s) the cells in our bodies use proteins?
A
A. to make amino acids
B
Both A and B.
C
B. to repair broken bones
6) DNA contains genetic information and molecules that carry information cells to cells called nucleic acids. In which cell organelle would you find nucleic acids?
A
cytoplasm
B
nucleus
C
cell membrane
7) When people eat foods such as meat, eggs, cheese and beans the body breaks down the food into smaller molecules called amino acids. What nutrient is supplied to cells of the body by these foods?
A
protein
B
water
C
carbohydrates
8) What molecules help build proteins?
A
nucleic acids
B
amino acids
C
water
D
carbohydrates
9) Which of these is the most common element found in the human body?
A
carbon
B
oxygen
C
nitrogen
D
calcium
10) What forms much of the cell membrane and regulates water?
A
phospholipids
B
nucleic acids
C
amino acids
D
carbohydrates
*select an answer for all questions
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