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Biology Unit 2 Review

Total questions: 60

Worksheet time: 41mins

Name
Class
Date
1.
The main purpose of the ____________ system is to break food particles into pieces that can be used.
a)
circulatory
b)
respiratory
c)
digestive
d)
skeletal
2.
What is responsible for delivering oxygen and removing carbon dioxide from the body?
a)
cell nucleus
b)
excretory system
c)
nervous tissue
d)
respiratory system
3.
The __________ system directs the body to inner and outer changes.
a)
digestive
b)
circulatory
c)
nervous
d)
skeletal
4.
The __________ is the main organ of the nervous system.
a)
heart
b)
lungs
c)
brain
d)
skin
5.
When tissues come together, they form ___________.
a)
cells
b)
atoms
c)
organs
d)
systems
6.
In multicellular organisms, tissues are comprised of _______.
a)
organs
b)
systems
c)
cells
d)
blood
7.
Which of the following body systems work together for support, protection, and movement?
a)
respiratory and cardiovascular
b)
skeletal and muscular
c)
skeletal and integumentary
d)
digestive and respiratory
8.
This system protects the body's organs, provides support for the body.
a)
Nervous System
b)
Skeletal System
c)
Respiratory System
9.
This system includes the spinal cord, brain and nerves
a)
Nervous System
b)
Digestive System
c)
Circulatory System
10.
What body system makes your body move? 
a)
Circulatory
b)
Respiratory
c)
Skeletal
d)
Muscular
11.
What body system removes the waste from your body? 
a)
Circulatory
b)
Excretory
c)
Digestive
d)
Respiratory
12.
My spinal cord helps _________ travel between my brain and the nerves in my body. 
a)
Memories
b)
Blood
c)
Waste
d)
Messages
13.
My body needs ______ from the air to live. 
a)
Oxygen
b)
Cardon Dioxide
c)
Carbon Monoxide
d)
Hydrogen Peroxide
14.
The main purpose of the _______ system is to ensure the continuation of the species.
a)
respiratory
b)
reproductive
c)
circulatory
d)
endocrine
15.
The main purpose of the ________ system is to produce hormones for the body.
a)
excretory
b)
digestive
c)
reproductive
d)
endocrine
16.
What system is the body's way of fighting off pathogens that would make it sick?
a)
Excretory
b)
Immune
c)
Digestive
d)
Endocrine
17.
Which of the following is a fossil?
a)
a plant that has recently died
b)
a group of organisms that can reproduce
c)
a structure or organ that no longer functions
d)
a trace of an organisms that existed in the past
18.
what did Charles Darwin observe in finch populations of the Galapagos Islands off the coast of South America?
a)
different species on different islands
b)
all species on one of the islands
c)
identical species on all the islands
d)
the same species as North America
19.
Mutations are important because they bring about
a)
death of the organism in which they develop
b)
genetic variation needed for a population to evolve
c)
benefits for the individual, not for the population
d)
Hardey-Weinberg equilibrium within a population
20.

What is the term for a feature that allows an organism to survive better in its environemtn?

a)

variation

b)

adaptation

c)

homologous structure

d)

vestigial structure

21.
What is the process in which humans breed organisms for certain traits?
a)
natural selection
b)
inheritance
c)
artificial selection
d)
descent withOUT modification
22.
The Physical remains of a plant or animal preserved in rock or Earth's crust. 
a)
Adapt
b)
Fossil
23.
Charles Darwin came up with this theory 
a)
Natural Selection
b)
Mutation
24.
To adjust to a changing environment
a)
Mutation
b)
Adapt
25.
Most of the species found in fossil form are _______________. 
a)
Alive
b)
Extinct
26.
Darwin wrote that organisms with traits that are best suited to the environment will ________________
a)
increase in number
b)
become extinct
27.
Some organisms that share a common ancestor have features that have different functions, but similar structures.  These are known as
a)
vestigial structures
b)
analogous structures
c)
homologous structures
d)
fossil structures
28.
What increases genetic variation when animals move from one population to another
a)
genetic drift
b)
sexual selection
c)
bottleneck effect
d)
gene flow
29.
This mechanism of evolution occurs when populations migrate.
a)
Extinction
b)
Gene flow
c)
Genetic drift
d)
Natural Selection
30.
The gradual change in species over time is...
a)
Evolution
b)
Nucleotide 
c)
Adaptation
d)
Natural Selection
31.
Who is the father of evolution?
a)
Darwin
b)
Mendel
c)
Newton
d)
Einstein
32.
What is another name for natural selection?
a)
survival of the smartest
b)
survival of the fastest
c)
survival of the biggest
d)
survival of the fittest
33.
What is the study of organisms at the early stages of development?
a)
DNA studies
b)
embryology 
c)
extinction
d)
fossil record
34.
Is a virus considered living or non-living?
a)
Living
b)
Non-Living
c)
Neither
35.
Can a virus change the normal activity of a cell?
a)
No
b)
Maybe
c)
Yes
36.
What is a host?
a)
Organism that lives on the cell and causes it harm 
b)
Something that causes harm to the cell 
c)
Cell that the virus invades and takes over
37.
Why do scientists classify viruses as non-living?
a)
They DO respond to a stimulus
b)
They need a host's energy because they do not have their own energy 
c)
They produce wastes
d)
They are really small 
38.
What is the first step of the virus reproduction cycle?
a)
The viruses genetic material (DNA) starts to take over the functions of the cell
b)
The host cell bursts open, releasing the new viruses
c)
The virus injects its genetic material into the cell
d)
A virus attaches to the surface of a host cell
39.
Which of the following is an example of how living things are classified?
a)
Differences
b)
Similarities
c)
Movement Method
d)
Habitat Location
40.
What is the last step in the viral reproduction cycle?
a)
A virus attaches to the surface of a host cell
b)
The proteins and genetic material start to assemble in the cell
c)
The host cell bursts open, releasing the new viruses
d)
The virus injects its genetic material into the cell
41.
Which is bigger, a bacteria or a virus?
a)
Bacteria
b)
Virus
42.
Where do viruses reproduce?
a)
Outside of a cell
b)
Inside of a cell
c)
They do not reproduce
43.
Which of the following helps prevent the spread of infectious diseases?
a)
Surgery
b)
Medication
c)
Vaccines
44.
What do viruses need to reproduce?
a)
they need genetic material
b)
They need a host cell
c)
They need  bacteria
d)
They need insulin
45.
True or False
The flu is caused by a virus.
a)
true
b)
false
46.
Antibiotics kill viruses
a)
True
b)
False
47.
Reasons that viruses are considered to be nonliving is because
a)
They are not cellular
b)
They cannot reproduce on their own
c)
They cannot make proteins
d)
all of the above
48.
What is a way to become immune to a disease without first having the disease?
a)
antibiotics
b)
Anti-retroviral drugs
c)
Vaccinations
d)
Exposure Therapies
49.
Which can be treated with antibiotics?
a)
Virus
b)
Bacteria
c)
Mutagen
d)
Parasite
50.
Viruses are larger than bacteria
a)
True
b)
False
51.
 Invasive plant species affect the interactions of living and nonliving components of an ecosystem, so the removal of invasive plants is often necessary. The goal of most plant-control methods is to disrupt or inhibit the function of different plant systems. For example, insects can be used to chew through roots in order to reduce a plant’s ability to absorb water.
Which of these functions would be most immediately affected by a reduction in water uptake by roots?
a)
Disease resistance 
b)
Seed dispersal
c)
Sunlight absorption
d)
Photosynthesis 
52.
 Recent studies in bone research indicate that using ultrasound on a broken bone can decrease the healing time by 25%. Which of these are the most basic levels of organization involved when a bone heals? 
a)
Cells and tissue
b)
Cells and organ system
c)
Organ system and organism
d)
Tissue and organ system
53.

The scenario above is best described by the interaction of what three body systems?

a)

X=respiratory system, Y=circulatory system, Z=reproductive system

b)

X=muscular system, Y=nervous system, Z=immune system

c)

X=circulatory system, Y=immune system, Z=muscular system

d)

X=muscular system, Y=digestive system, Z=circulatory system

54.

Most plants have hair-like cells called trichomes that project from the surface and help the plants in many ways. In some plants trichomes secrete toxic substances that most likely perform which function?

a)

Absorb carbon dioxide

b)

Protect against herbivorous insects

c)

Reflect light off leaves

d)

Reduce water loss from evaporation

55.

The statements above describe processes and interactions in what plant function?

a)

defense against diseases

b)

reproduction

c)

transport of necessary materials

d)

response to environmental change

56.

When one side of a plant is not getting enough light, a hormone is produced in the shoot system causing growth on the darker side of the plant. This growth on the darker side causes the plant to bend. This is an example of:

a)

a plant’s ability to reproduce

b)

uptake of water through the plant’s root system

c)

defense from possible predators

d)

a plant’s ability to respond to its environmental conditions

57.

Describe how the transport system of a plant is critical to its reproductive function.


I.The plant’s root system uptakes water and nutrients and delivers them to the flowering parts of the plant to support growth and development.

II. The shoot system provides structural support to the plant and upholds the flower.

III. Hormones used for seed development are transported through the root system to the shoot system.

a)

I and II only

b)

II and III only

c)

I and IlI only

d)

I, II, and III

58.

The part of the plant

that is generally

under the ground

and in the soil

a)

Reproductive System

b)

Transpiration

c)

Shoot System

d)

Root System

59.

The part of the plant

that is generally above the ground including stems, leaves, buds and reproductive structures

a)

Stem System

b)

Leaf system

c)

Shoot system

d)

Xylem

60.

The outer layer of plants which protects the plants and regulates water levels inside the plant.

a)

Shoot System

b)

Root System

c)

Dermal System

d)

Reproductive System

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