Download do not write on the test

DO NOT WRITE ON THE TEST! PLACE ALL ANSWERS ON THE SCANTRON
8th grade 1st quarter Pre-test
1. Which of the following is a risk of overusing antibiotics to treat infections?
A. Bacteria become resistant to the antibiotics
B. Antibiotics cause other diseases to develop
C. Antibiotics increase the rate of infection
D. Antibiotics work only once
2. Which of the following structures is responsible for breaking down waste and worn out cell parts?
A. ribosome
B. vacuole
C. lysosome
D. mitochondrion
3. Mitochondria break down food and release energy for the cell. In which type of cell would you expect to find
the most mitochondria?
A. skin cells
B. nerve cells
C. muscle cells
D. fat cells
4. A student wants to know how much mass is gained by a cat in its first year of life. What units of measurement
will he most likely use?
A. ton
B. milliliter
C. milligram
D. kilogram
5. The picture below shows a paramecium, a single-celled protest that lives in water.
What are the structures that surround the cell of the paramecium and
move it through water called?
A. flagella
B. False feet
C. pseudopods
D. Cilia
6. Why do researchers need to constantly develop new types of antibiotics?
A. Bacteria are constantly evolving and becoming resistant to existing antibiotics
B. Doctors need as many treatment options as possible for bacterial diseases.
C. Drug companies want to sell as many drugs as possible
D. Bacteria eventually learn to stay away from certain antibiotics in the body.
7. Which of the following statements is not part of cell theory?
A. All organisms are made of one or more cells.
B. Cells are the basic units of structure and function for all life.
C. All cells come from cells that already exist.
D. All new cells are identical to their parents.
8. Many microscopic organisms can be identified by their mode of movement. Which statement correctly
describes the difference between paramecia and amoebas in terms of how they move?
paramecium
amoeba
A. Paramecia move using pseudopods and amoebas move using cilia.
B. Paramecia move using a flagellum and amoebas move using pseudopods.
C. Paramecia move using a flagellum and amoebas move using cilia
D. Paramecia move using cilia and amoebas move using pseudopods.
9. A scientist tells a drug company that he has discovered an antibiotic that will cure HIV. The drug company
tells the scientist that he must be mistaken and that they are not interested in his cure. Why does the drug
company think that the scientist’s antibiotic will not cure HIV?
A. Because antibiotics cannot cure viral diseases.
B. Because a cure for HIV has already been discovered.
C. Because viral diseases can only be cured with a vaccine.
D. Because HIV is a bacterial disease.
10. You are asked to identify an unknown single-celled organism. When you observe the organism under the
microscope, you can tell that it does not have a nuclear membrane or membrane bound organelles. What type of
organism are you most likely looking at?
A. protist
B. bacterium
C. plant
D. fungus
11. Which of the following statements is false?
A. All living things have more than one cell
B. Plant cells have structures that aid in photosynthesis
C. The nucleus controls cell reproduction
D. Chlorophyll is green
12. According to cell theory which of the following statements is correct?
A. Viruses are true cells
B. Mitochondria are found only in plant cells.
C. Cells are basically unlike in structure.
D. Cells come from preexisting cells.
13. Transport of molecules within animal cells occurs in the
A. cytoplasm
C. ribosomes
B. nucleus
D. chloroplasts
14. Which part of the cell contains the genetic material?
A. Nucleus
C. Vacuole
B. Cell Membrane
D. Endoplasmic Reticulum
15. The structure involved in controlling what enters and leaves the cell is
A. ribosome
B. Lysosome
C. Chloroplast
D. Cell Membrane
16. Which of the following processes is involved in moving molecules move areas of high concentration to areas of
low concentration?
A. Mitosis
B. Synthesis
C. Diffusion
D. Osmosis
17. What is the primary function of the ribosomes?
A. To package proteins
B. To synthesize proteins
C. To control the cell
D. To dispose of waste
18. The cell theory applies to
A. animal cells only
B. Plant cells only
C. Plant and animal cells
D. neither plant nor animal cells
19. What is the correct definition of a cell?
A. The cell is a structure that contains a nucleus.
B. The cell is the smallest unit of matter that can carry on all the processes of life
C. The cell is the unit of structure and function that is identical in all living things.
D. The cell is the unit of life that can grow but not divide.
20. Which structure allows some protists to manufacture their own nutrients?
A. Nucleus
B. Ribosome
C. Chloroplast
D. Pseudopod
21. Euglena are able to make their own food by photosynthesis. What is the source of energy for this process?
A. sunlight
B. Carbon Dioxide
C. glucose
D. water
22. What is the green pigment that captures the energy the Euglena use for photosynthesis?
A. Chlorophyll
B. glucose
C. Cellulose
D. ATP
23. Examine the following table:
Organelle
Cell Membrane
Nucleus
Mitochondrion
Ribosome
Cell Structures and Functions
Function
Controls what enters and leaves the cell
Transfers energy from nutrients to ATP
Controls cell activities; stores hereditary info
Site where proteins are synthesized
Which two organelles are not correctly matched with the functions they perform?
A. Nucleus and mitochondrion
B. Nucleus and cell membrane
C. Nucleus and ribosome
D. Mitochondrion and ribosome
24. A disease that can spread rapidly from one person to another is said to be
A. Contagious
B. Resistant
C. Noninfectious
D. A mutagen
25. Which statement is true of viruses?
A. They can be killed by antibiotics
B. They can be prevented with a vaccine
C. None of them are harmful
D. All of them are harmful