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2nd Quarter Biology Midterm

Total questions: 61

Worksheet time: 2hrs 54mins

Name
Class
Date
1.
What two elements make up water?
a)
Helium and oxygen
b)
Hydrogen and oxygen
c)
helium and carbon
d)
oxygen and carbon
2.
What word describes when water is attracted to other substances?
a)
cohesion
b)
adhesion
c)
capillary action
d)
surface tension
3.
Why does ice float?
a)
As water freezes, it expands and its density decreases.
b)
As water freezes, it takes up more hydrogen from the atmosphere, causing it to have a greater buoyancy.
c)
As water freezes, air becomes trapped between the hydrogen bonds of water molecules.
d)
As water freezes, it takes up more oxygen from the atmosphere, causing it to have a greater buoyancy.
4.
Which end of the water molecule has a slightly positive charge?
a)
the oxygen end
b)
the hydrogen end
c)
both ends are slightly positive
d)
neither end is positive
5.
Water is a universal solvent because it...
a)
It can be found anywhere
b)
It freezes when it gets cold
c)
floats when frozen
d)
Dissolves most substances
6.
Large bodies of water, such as lakes and oceans, do not quickly fluctuate in temperature. What is the reason for this phenomenon?
a)
Water is an acid.
b)
Water is a versatile solvent.
c)
Water has a high heat capacity.
d)
 Water acts as a buffer.
7.
 Small insects can walk across the surface of calm water. Their feet push the surface of the water down slightly, somewhat like a person walking across a trampoline, but they do not break the surface. What is the best explanation for why this happens?
a)
The insects are light enough so that they do not break the hydrogen bonds holding the water molecules together
b)
The insects actually use their wings to hover slightly above the water's surface and they only skim it with their feet
c)
The insects' feet are non-polar, so they are repelled by the polar water molecules and are pushed away from the water's surface
d)
The insects are small enough to see the individual water molecules, so they are able to step carefully from one molecule to the next
8.
The tightness across the surface of water that enables paper clips to float is ____________.
a)
adhesion
b)
capillary action
c)
surface tension
d)
polarity
9.
Which statement explains why water molecules stick together?
a)
both sides are negative
b)
one side has a positive charge and the other side has a negative charge
c)
one side has a negative charge adn the other side has a neutral charge
d)
both sides are positive
10.

The ability of water molecules to stick to each other, creating surface tension is called:

a)

Cohesion

b)

Adhesion

c)

Insulation

d)

Ph

11.

Why does water move from the roots to the leaves of plants?

a)

Water is pushed by solutes

b)

Water is pulled by gravity

c)

Capillary action pulls the water molecules like a chain

d)

Water's cohesion causes it to "pull" towards the leaves

12.
 Many fish and aquatic plants can survive a cold winter because the layer of ice that forms at the top of the lake insulates the water below and prevents the lake from freezing solid. What unique property of water contributes to this effect? 
a)
Water absorbs heat when it evaporates and forms a gas 
b)
 Water expands and becomes less dense when it freezes.
c)
Water molecules completely separate into ions in solutions.
d)
 Water forms hydrogen bonds with ions and other polar substances. 
13.

A ______________ is a large molecule.

a)

Micromolecule

b)

Polymer

c)

Amino Acid

d)

Macromolecule

14.

Which of the following is not one of the four major classes of macromolecules?

a)

Lipids

b)

Carbon

c)

Protein

d)

Carbohydrates

e)

Nucleic Acid

15.

Which macromolecule is used as our main source of energy?

a)

Lipids/Fats

b)

Nucleic Acids

c)

Proteins

d)

Carbohydrates

16.

Which of the following are examples of carbohydrates? (Select all that apply).

a)

Bread

b)

Pasta

c)

Olive Oil

d)

Cheese

17.

Which macromolecule stores energy?

a)

Carbohydrates

b)

Proteins

c)

Lipids/Fats

d)

Nucleic Acids

18.

Nucleic acids make up which of the two molecules listed below?

a)

FDA

b)

RNA

c)

DNA

d)

FDR

19.

This macromolecule breaks down into sugars such as glucose.

a)

Lipids/Fats

b)

Nucleic Acids

c)

Protein

d)

Carbohydrates

20.
DNA and RNA are examples of 
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
21.
Proteins are made of monomers called ___________
a)
Nucleotides
b)
Monosaccharides
c)
Amino Acids
d)
Glycerol and fatty acids
22.
Nucleotides are monomers of
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
23.
Monosaccharides are monomers of
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
24.
Waxes, oils and fats are examples of
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
25.
What is the function of nucleic acids?
a)
store genetic information
b)
store energy (long-term)
c)
store energy (short-term)
d)
build skin, hair, nails, muscles
26.
Which macromolecule stores energy, insulates us, and makes up the cell membrane?
a)
lipids
b)
proteins
c)
carbohydrates
d)
nucleic acids
27.

The most important element that is the backbone of all biological molecules

a)
carbon
b)
nitrogen
c)
phosphorus
d)
sulfur
28.
Which is an example of a lipid?
a)
Candy
b)
Olive Oil
c)
DNA
d)
Meat
29.
Which major macromolecule is being represented in this image? 
a)
carbohydrate
b)
lipid
c)
protein
d)
nucleic acid
30.
What are the single sugars that are the building blocks of carbohydrates?
a)
monosaccharides
b)
disaccharides
c)
polysaccharides
d)
amino acid
31.
Nucleotides are monomers of
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
32.

What is the organelle responsible for photosynthesis?

a)

Mitochondria

b)

Chloroplast

c)

Nucleus

d)

Cytoplasm

33.

What absorbs the light energy in the light dependent stage?

a)

chloroplast

b)

stroma

c)

chlorophyll

d)

ATP

34.

What is a main product of Photosynthesis?

a)

Oxygen

b)

Glucose

c)

ATP

d)

NADPH

35.

1.


What are the reactants of cellular respiration in plants?

a)

carbon dioxide and water

b)

glucose and carbon dioxide

c)

the reactants of the electron transport chain

d)

oxygen and glucose

36.

which of the following is a reactant to photosynthesis?

a)

Oxygen

b)

Carbohydrates

c)

Glucose

d)

Water

37.

Why are plants considered autotrophs

a)

They make their own food

b)

They provide food for others

38.

Organism that obtains food by consuming other living things; also called a consumer

a)

Autotroph

b)

Heterotroph

c)

Chlorophyll

d)

Stroma

39.

Principal pigment of plants and other photosynthetic organisms

a)

Stroma

b)

Chlorophyll

c)

NADP+

d)

ATP

40.

What is the formula for GLUCOSE?

a)

C6H6O6

b)

C12H6O12

c)

C6H12O6

d)

C12H12O12

41.

How does carbon dioxide enter the leaf?

a)

stomata

b)

central vein

c)

stroma

d)

xylem

42.

What vital gas is given off during photosynthesis?

a)

carbon monoxide

b)

oxygen

c)

carbon dioxide

d)

nitrogen

43.

How does water enter a plant?

a)

roots

b)

stomata

c)

stroma

d)

chlorophyll

44.

Photosynthesis is a process that converts . . .

a)

chemical energy into chemical energy

b)

light energy into light energy

c)

chemical energy into light energy

d)

light energy into chemical energy

45.

What is the name of the carbohydrate produced by photosynthesis?

a)

oxygen

b)

carbon dioxide

c)

glucose

d)

water

46.

What are the products of cellular respiration?

a)

glucose and water

b)

carbon dioxide and water

c)

oxygen and water

d)

carbon dioxide and glucose

47.
The main source of energy for all life comes from ____.
a)
the Earth
b)
the moon
c)
the sun
d)
the food we eat/make
48.

Why are producers (plants) important for all life on Earth?

a)

They make our world more beautiful

b)

They make the planet look green

c)

They use carbon dioxide and give us oxygen

d)

They provide shade for insects

49.

What are the 3 key ingredients needed for photosynthesis

a)

glucose, oxygen, carbon dioxide

b)

carbon dioxide, water, glucose

c)

water, soil, sunlight

d)

sunlight, water, carbon dioxide

50.
Which of the following statement is true regarding photosynthesis
a)
creates oxygen for animals to breath
b)
creates energy for consumers to use
c)
creates food for plants to use
d)
all of these are correct
51.
What is the chemical formula for water?
a)
H2O
b)
HO2
c)
CHO2
d)
CO2H
52.

What is the chemical formula for carbon dioxide?

a)

H2O

b)

CO2

c)

CHO2

d)

CO2H

53.

In which organelle does cellular respiration take place?

a)

chloroplast

b)

mitochondrion

c)

nucleus

d)

endoplasmic reticulum

54.

Cellular respiration is carried out by which of the following?

a)

plants only

b)

plants and animals

c)

plants, algae, and cyanobacteria

d)

all living organisms

55.

What is the equation for aerobic cellular respiration?

a)
C6H12O6 + 6O2 --> --> --> 6CO2 + 6H2O
b)
C6H12O6 + 6CO2 --> --> --> 6O2 + 6H2O
c)
6 CO2 + 6H2O --> --> --> 6O2 + C6H12O6
56.

Cellular respiration (a)   energy.

Choose from the below words
Stores
Releases
57.

In what molecule is the energy carried in cells?

a)

Glucose

b)

Oxygen

c)

ATP

d)

Carbon Dioxide

58.
Which organisms perform CELLULAR RESPIRATION?
a)
Only Autotrophs
b)
Only Heterotrophs
c)
Autotrophs and Heterotrophs
59.

___ is the process that cells use to take energy from glucose.

a)

cellular respiration

b)

photosynthesis

c)

transpiration

d)

excretion

60.

___ is needed for cellular respiration, it is absorbed from the air.

a)

oxygen

b)

glucose

c)

carbon dioxide

d)

water

61.

The primary purpose of cellular respiration is to produce ___.

a)

ATP

b)

sugar

c)

glucose

d)

heat

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