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