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Biology Midterm

Total questions: 80

Worksheet time: 1hrs 4mins

Name
Class
Date
1.

The plasma membrane consists of:

a)

a phospholipid bilayer

b)

embedded proteins

c)

cholesterol

d)

all of the above

2.

A nerve cell is trying to move sodium ions

(Na+) into its cytoplasm, against the concentration gradient. The best process to achieve this would be:

a)

Simple Diffusion

b)

Osmosis

c)

Passive Transport

d)

Active Transport

3.

Plant cells have:

a)

A Cell Wall

b)

Plasma Membrane

c)

Centrioles

d)

Both A and B

4.

Matter is anything that has mass and takes up space.

a)

True

b)

False

5.

Hydrogen bonds are an example of adhesion

a)

True

b)

False

6.

Which is a substance that produces OH- ions when it is dissolved in water?

a)

a base

b)

an acid

c)

a buffer

d)

salt

7.

Water is composed of what two elements?

a)

protons and neutrons

b)

oxygen and nitrogen

c)

hydrogen and electrons

d)

oxygen and hydrogen

8.

The elements of a water molecule are held together by which type of bond?

a)

covalent bond

b)

double bond

c)

hydrogen bond

d)

ionic bond

9.

What property of water allows sweat to cool the body & coastal cities to have more moderate temperatures than inland cities?

a)

High heat capacity

b)

Neutral pH of 7

c)

Surface tension and capillary action

d)

Universal solvent

10.

In humans and other organisms, which substance below acts as the main energy source?

a)

Proteins

b)

lipids

c)

Carbohydrates

d)

Water

11.

The letter "p" as it normally appears in print is placed on the stage of a light microscope. Which best represents the image observed when a student looks through the microscope?

a)

p

b)

q

c)

b

d)

d

12.

Which of the following is a substance that lowers the activation energy?

a)

a catalyst

b)

an ion

c)

a reactant

d)

a substrate

13.

Single sugar molecules are also known as _______.

a)

polysaccharides

b)

monosaccharides

14.

Most of the oxygen that enters out atmosphere results from the process of

a)

respiration

b)

fermenation

c)

transpiration

d)

photosynthesis

15.

Which process is an outcome of photosynthsis?

a)

complex molecules are broken down to form simple molecules

b)

water is absorbed into the root hairs

c)

light energy is converted to chemical energy

d)

water is transported through vascular tissue

16.

What's the term for a solution whose concentration has more solute than solvent?

a)

hypertonic

b)

hypotonic

17.

What happens to a cell that is placed in s hypertonic solution?

a)

water rushes out of the cell, causing it to shrink and plant cell vacuoles to collapse

b)

do not gain or lose water

c)

water will move quickly into a cell causing it to swell and the cell may burst

18.

What's the term for a solution whose concentration is the same on both sides of the membrane?

a)

isotonic

b)

equilibrium

c)

hypertonic

d)

hypotonic

19.

Once equilibrium is reached, do particles stop moving?

a)

yes

b)

no

20.

Which type of transport needs energy?

a)

passive transport

b)

active transport

21.

This type of passive transport deals with just small molecules not water.

a)

diffusion

b)

osmosis

22.

The movement of molecules from side A to side B is an example of

a)

active transport

b)

chromatography

c)

cellular respiration

d)

diffusion

23.

Which diagram represents equilibrium?

a)
b)
c)
24.

Diffusion of water across a selectively permeable membrane is called

a)

active transport

b)

osmosis

c)

exocytosis

d)

passive transport

e)

facilitated diffusion

25.

Which means of particle transport requires input of energy from the cell?

a)

diffusion

b)

osmosis

c)

facilitated diffusion

d)

active transport

26.

Which of the following is not a true statement about diffusion? Diffusion

a)

occurs from a high to a low concentration

b)

occurs from a low to a high concentration

27.

What is the immediate source of energy for active transport?

a)

carbohydrates

b)

lipids

c)

ATP

d)

carbohydrates and lipids

28.

The active transport of large molecules into the cell membrane using energy is called

a)

osmosis

b)

exocytosis

c)

endocytosis

d)

passive transport

29.

When Streptococcus pneumoniae are exposed to an antibiotic, the bacteria try to pump the antibiotic out of their cells. Which of the following mechanisms is most likely used by the Streptococcus pneumoniae to pump the antibiotic out of their cells?

a)

active transport

b)

diffusion

c)

facilitated diffusion

d)

osmosis

30.

Which of the following correctly describes the process of osmosis?

a)

The passive movement of water molecules from areas of low solute

concentration to high solute concentration, through a selectively permeable membrane.

b)

The passive movement of water molecules from areas of high solute concentration to low solute concentration, through a selectively permeable membrane.

c)

The active movement of water molecules from areas of high solute concentration to low solute concentration, using a membrane pump protein.

d)

The passive movement of water molecules from areas of low solute concentration to high solute concentration, through a channel

protein.

31.

The energy responsible for active transport is associated with which of the following?

a)

ATP

b)

ADP

c)

AMP

d)

kinetic energy of the diffusing particles

32.

Active transport moves materials from _____to

_____concentration and requires an input of ______:

a)

low to high, water

b)

low to high, energy

c)

high to low, water

d)

high to low, energy

33.

All forms of passive transport depend on

a)

energy from the cell in the form of ATP

b)

the kinetic energy of molecules

c)

ion channels

d)

carrier proteins

34.

Molecules naturally move from an area of _____concentration to an area of _____ concentration.

a)

high...high

b)

high...low

c)

low...low

d)

low...high

35.

Water will exit the cell when placed in a/n _______

environment

a)

polar

b)

hypotonic

c)

hypertonic

d)

isotonic

36.

This diagram shows the same type of molecules in area A and are B with the passage of time, some molecules move form area A to area B.

The movement is the result of

a)

phagocytosis

b)

pinocytosis

c)

diffusion

d)

cyclosis

37.

Produces energy to fuel the cell’s activities.

a)

cell wall

b)

mitochondria

c)

Golgi Bodies / Golgi Apparatus

d)

cytoplasm

38.

Holds the genetic information (DNA) for the cell. It controls all cell activities.

a)

lysosome

b)

nucleus

c)

ribosome

d)

mitochondria

39.

Creates proteins. It can float within the cytoplasm or be attached to an organelle.

a)

cytoplasm

b)

ribosome

c)

nucleus

d)

mitochondria

40.
a)
controls what enters and exits the cell
b)
contains chlorophyll
c)
thick and rigid
41.
What are tiny organelles that convert glucose into ATP?
a)
Ribosomes
b)
Vesicles
c)
Cytoskeleton
d)
Mitochondria
42.
All cells come from___________ cells.
a)
pregnant
b)
pre-existing
c)
paternal
d)
pin size
43.

Chromosomes contain the _______ _______ that is passed from one generation of cells to the next.

a)

chemical information

b)

genetic information

c)

cell instructions

d)

chemical energy

44.

The nucleus is surrounded by a nuclear envelope composed of ________ membranes.

a)

one

b)

two

c)

three

d)

four

45.

This picture represents a cell that produces digestive enzymes. Which cellular structure would be the most likely location for the synthesis of these enzymes?

a)

1

b)

2

c)

3

d)

4

46.

Biology is the study of.......

a)

Life

b)

Frogs

c)

Motion

d)

Triangles

47.

Scientists "do" science by a process called....

a)

Experimention

b)

Scientific Inquiry

c)

Research

d)

Testing

48.

What is a hypothesis?

a)

a posed question

b)

evidence

c)

an educated guess

d)

scientific inquiry

49.

What is the goal of science?

a)

To investigate

b)

To explain

c)

To understand

d)

All of these

50.

What is the first step in the scientific inquiry process?

a)

pose a question

b)

state a hypothesis

c)

draw a conclusion

d)

design an experiment

51.

When measuring the mass of a baby hamster, what metric unit should be used?

a)

milliliter

b)

kilogram

c)

centimeter

d)

gram

52.

For scientific data to be considered accurate and reliable, most scientific experiments should be __________.

a)

conducted 3 times

b)

conducted only 1 time

c)

conducted as many times as possible

d)

repeated no more than 2 times

53.

The dependent variable in this experiment is _________

a)

age

b)

height

c)

"Russel's height at 3-year interval"

d)

there is no dependent variable

54.

According to this graph_______

a)

more people like hamburgers than fish & chips

b)

the number of people who like hamburgers increased over time, while the number of people who like fish & chips decreased

c)

the number of people who like pizza decreased over time, while the number who like fish & chips and hamburger increased

d)

both the number of people who like hamburgers and pizza increased over time

55.

Which factor does the scientist change?

a)

dependent variable

b)

control

c)

independent variable

d)

hypothesis

56.

Which factor's response is based on the independent variable?

a)

control

b)

constant

c)

hypothesis

d)

dependent variable

57.
______ are examples of carbohydrates
a)
glucose & fructose
b)
guanine & cytosine
c)
glycine & glutamine
d)
samose & deanose
58.
__________ are nucleic acid functions
a)
store & transfer genetic info
b)
store & create energy
c)
structure & energy for cells
d)
membrane structure and nutrient transfer
59.
________ are the main components of fats and oils.
a)
lipids
b)
amino acids
c)
nucleic acids
d)
carbohydrates
60.
These organic molecules are used by the body to store and release energy.
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
61.
These organic molecules are used by the body to store the genetic code.
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
62.
Amino acids are the monomers of
a)
Carbohydrates 
b)
Lipids
c)
Proteins 
d)
Nucleic Acids
63.

Chlorophyll appears to be green because...

a)

it absorbs green light

b)

it reflects green light

64.

the goal of the light dependent stage of photosynthesis is to convert light energy into...

a)

ATP & NADPH

b)

glucose

c)

G3P

d)

oxygen gas

65.

The light dependent reactions occur in the

a)

stroma

b)

thylakoid

66.

The Calvin Cycle occurs in the

a)

stroma

b)

thylakoid

67.
In chemiosimosis in mitochondria, protons flow from the intermembrane space into the matrix, whearas in chemiosimosis in chloroplast, protons flow from __________
a)
the thylakoid space to the stoma
b)
the stoma to the thylakoid space
c)
the matrix into the stoma
d)
the stoma into the cytosol
68.
What is one function of the other pigments  besides chlorophyll, in the chloroplast?
a)
to block damaging wavelengths of light
b)
to absorb different wavelengths than the chloroplasts
c)
to provide different colors to the leaves
d)
to transfer energy to a separate photosystem beside the one using chlorophyll a and b.
69.
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
70.
Where does the Calvin cycle take place?
a)
Stroma
b)
thylakoid
c)
thylakoid space
d)
matrix
71.
The stacks of flattened sacs in the picture are called
a)
chlorophyll
b)
grana
c)
stroma
d)
thylakoids
72.
In which eukaryotic organelles does photosynthesis occur?
a)
mitochondria
b)
stomata
c)
xylem
d)
chloroplast
73.

Which organelle is involved in passive transport?

a)

nucleus

b)

mitochondria

c)

cell membrane

d)

rough endoplasmic reticulum

74.

Does passive transport require energy?

a)

yes

b)

no

75.
Osmosis is the diffusion of _____ across a membrane
a)
glucose
b)
NaCl
c)
proteins
d)
water
76.
Passive transport is called "passive" because it occurs WITHOUT
a)
cause.
b)
energy.
c)
a concentration gradient.
d)
a cell wall.
77.
Which of the following is NOT a type of passive transport?
a)
Osmosis
b)
Diffusion
c)
Endocytosis
78.
What does semi-permeable mean?
a)
Only some things can move through membrane
b)
Nothing can move through membrane
c)
Reagan can move through membrane
d)
Membrane connot be moved through
79.
What does “high concentration area” mean?
a)
Spread out
b)
Tightly packed together
c)
Uncrowded
d)
Spacious
80.
Why is diffusion and osmosis important to cells?
a)
It allows them to take in materials without using energy.
b)
It allows them to reproduce.
c)
It allows them to absorb sunlight.
d)
It allows cells to use all energy.

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