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Biology Unit 4 Review
Test Description: Use the games to help you review for the Unit 4 Test!
Instructions: Answer all questions to get your test result.
1) Which behavior can both humans and flatworms do?
A
see the shape of an approaching predator
B
smell fresh food
C
communicate verbally
D
form images from sensory signals
2) Which cell is found in the nervous system?
A
axon
B
neuron
C
sodium
D
dendrite
3) When an action potential reaches the end of the axon, what happens?
A
The potassium ions travel back toward the cell body.
B
The sodium ions travel back toward the dendrites.
C
The neuron releases chemical messengers (neurotransmitters).
D
The neuron takes up chemical messengers (neurotransmitters).
4) How does an action potential travel through a neuron?
A
From dendrites through the cell body, through the axon, and out the dendrites at the other end of the cell.
B
From dentrites at one end of cell, through axon, to cell body at other end of cell..
C
From the center of the cell body, outward in both directions to the ends of the cell.
D
From the center of the axon, outward in both directions to ends of cell.
5) Which of the following statements is the best description of the life cycle of plants such as ferns?
A
Plants have a single life cycle and are entirely haploid.
B
Plants have a single life cycle and are entirely diploid.
C
Plants have a two-part life cycle, spending part of their life in a diploid phase and part in a haploid phase.
D
Different plants have a different number of phases in their life cycle.
6) Which structure of a flowering plant produces female reproductive cells, or eggs?
A
petal
B
stigma
C
anther
D
ovule
7) Haploid cells will be found in which two structures of a flowering plant?
A
ovule and stigma
B
stigma and petal
C
anther and stigma
D
anther and ovule
8) In which structure do pollen grains develop?
A
petal
B
stigma
C
anther
D
ovule
9) Which is an example of asexual reproduction in plants?
A
producing seeds
B
budding
C
producing pollen
D
fusing gametes
10) Which statement is correct about the relationship between bones and muscles?
A
A bone needs only one muscle to move it back and forth.
B
Moving a bone back and forth requires the action of at least two muscles.
C
Bones can move without the aid of muscles.
D
A muscle can both push and pull a bone, causing it to move.
11) Which statement accurately states what happens when a muscle contracts?
A
Actin produces myosin and ATP.
B
Myosin heads attach to and pull on a series of actin-binding sites.
C
Calcium produces contractions.
D
Calcium combines with ATP to produce sarcomeres.
12) When is a muscle fully contracted?
A
When the myosin is touching the actin.
B
When the myosin and actin filaments are partially overlapped.
C
When the myosin and actin filaments are barely overlapped.
D
When the myosin and actin filaments are completely overlapped.
13) What is the primary type of macromolecule in the actin and myosin that make up muscle cells?
A
protein
B
carbohydrate
C
lipid
D
fiber
14) Which structure is the interface between the blood systems of a mother and her fetus?
A
uterus
B
fetus
C
placenta
D
fallopian tube
*select an answer for all questions
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