Biology Midterm Practice Test

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Quizzes Created: 42 | Total Attempts: 15,391
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1. This is a picture of ___ tissue.

Explanation

Blood is the tissue that carries oxygen to other tissues. It looks kind of like a doughnut.

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About This Quiz
Biology Midterm Practice Test - Quiz

The Biology Midterm Practice Test explores the physiological responses of Daphnia to temperature changes, cell theory in relation to viruses, cellular structures distinguishing bacteria, and hormonal regulation in human reproductive cycles, enhancing understanding of key biological concepts.

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2. This is a picture of ___ tissue.

Explanation

Nerve tissue sends messages. It looks like star constellations or jelly fish.

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3. This is a picture of ___ tissue.

Explanation

Muscle tissue is used for contraction & movement. It looks like rope.

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4. This is a picture of ___ tissue.

Explanation

Bone is used for support. It is a type of connective tissue. It looks like the rings in a tree trunk.

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5. Which of the following chemical formulas represents an organic molecule? (note: the numbers should be read as subscripts NOT coefficients)

Explanation

Organic compounds contain carbon (C). Inorganic compounds do NOT contain carbon (C).

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6. Which physiological system includes the lungs, trachea, and pharynx?

Explanation

The respiratory system contains the organs responsible for gas exchange.

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7. Water is the universal solvent. Why?

Explanation

Polarity is the MOST important property of water. Polarity and hydrogen bonding form all of the other properties of water.

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8. Which organelle makes proteins?

Explanation

Ribosomes make proteins.

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9. In an experiment, a scientist filled 2 open flasks, as shown in the figures, with broth and boiled the broth until it became clear. He then left the flasks open for several days. Which results showed that spontaneous generation did NOT occur?

Explanation

If spontaneous generation had occurred, then flask B would have become cloudy as well. Because only flask A became cloudy, that means that dust was carrying microbes into the broth of the open neck flask.

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10. One difference between prokaryotes and eukaryotes is that

Explanation

Prokaryotes do NOT have a nucleus or membrane-bound organelles.
Eukaryotes do have a nucleus and membrane-bound organelles.

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11. Enzymes affect the reactions in living cells by changing the

Explanation

Enzymes lower the amount of activation energy needed to start the chemical reaction. This speeds up the reaction.

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12. When cells make proteins, they sometimes have to be shipped out of the cell. The packaging and distribution center of the cell is the ___.

Explanation

The Golgi apparatus packages proteins.

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13. Isotopes are atoms of the same element with the same number of protons and

Explanation

Isotopes have different masses because they have different numbers of neutrons.

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14. The organelles that make food through the process of photosynthesis are called ___.

Explanation

Chloroplasts make food for plant cells.

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15. Refer to the illustration above. Molecules like this are found in

Explanation

Lipids like fatty acids are made of long chains of carbon and hydrogen.

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16. What is the primary function of most epithelial tissues?

Explanation

Muscle = Contraction
Connective = joining & cushioning
Epithelial = linings & coverings
Nervous = signaling

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17. Which organelle produces energy for the cell in the form of ATP?

Explanation

Mitochondria are responsible for making energy (ATP) for the cell.

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18. Which of the following is NOT found in both animal and plant cells?

Explanation

Animal cells do NOT have cell walls, a large central vacuole, or chloroplasts. Plant cells usually do not have lysosomes or centrioles.

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19. Which of the following is TRUE about how enzymes function?

Explanation

Enzymes are reusable and are not a part of the chemical reaction, therefore they are not changed by the reaction. Enzymes and substrates fit together at the active site.

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20. Energy is released from ATP when a phosphate group is removed to form ADP and water is split apart. This is an example of which kind of reaction?

Explanation

Hydrolysis breaks water apart. This happens when energy is released from ATP to form ADP.

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21. Energy is released when the bond between

Explanation

Energy is stored in the chemical bonds between the phosphate groups in ATP. When you break a bond, it releases energy. When you form a bond, it stores energy.

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22. Homeostasis means

Explanation

Homeostasis is maintaining an internal balance.

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23. Which of the following is NOT a function of proteins?

Explanation

Nucleic acids store and transmit genetic information.

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24. Which organic molecule below is most closely related to nucleic acids?

Explanation

Nucleotides are the monomers that build nucleic acids. Amino acids build proteins. Lipids are made of long chains of carbon and hydrogen. Polysaccharides (complex carbohydrates) are made of sugars.

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25. Which of the following statements most accurately describes the difference between an ionic bond and a covalent bond?

Explanation

Ionic bonds transfer (give/take) electrons.
Covalent bonds share electrons.

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26. Mrs. Lewis set up a lab for her biology students using a culture of the small crustacean Daphnia, obtained from a pond that was 20°C. The students are to investigate the effect temperature has on Daphnia. The students will observe the crustacean's heartbeat under the microscope, at the following temperatures: 0°C, 10°C, 20°C, 30°C, and 40°C. They will count the number of heartbeats per second. What is the dependent variable in Mrs. Lewis' experiment?

Explanation

The dependent variable is the variable that is being measured. It changes BECAUSE of the change in the independent variable.

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27. Which of the following statements about enzymes is NOT true?

Explanation

Enzymes and substrates must have COMPLIMENTARY shapes so that they fit together.

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28. What trait of an ATP molecule enables it to store energy for use by cells?

Explanation

ATP stores energy in the bonds between the phosphate groups.

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29. Refer to the illustration above. Molecules like this are found in

Explanation

Carbohydrates form ring structures and have a 1C:2H:1O ratio.

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30. Carbon atoms can bond together to form all of the following EXCEPT

Explanation

Carbon atoms form ORGANIC molecules NOT inorganic. They can form lots of different arrangements.

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31. Lipids are

Explanation

Lipids are hydrophobic (do not mix with water) because they are nonpolar. Water is polar, so they do not mix.

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32. Which of the following body systems produces hormones that are essential for the regulation of the human reproductive cycle?

Explanation

The endocrine system is made of glands that produce hormones. Hormones regulate everything in the body.

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33. What will happen if an acid is added to a solution?

Explanation

When the pH decreases (becomes more acidic), the amount of H+ ions increases and the amount of OH- ions decreases.

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34. After learning about viruses in Biology class, Sam decides to have his cat vaccinated against feline leukemia virus. According to cell theory, are viruses, such as feline leukemia, considered living things?

Explanation

Viruses are NOT cells and are therefore NOT considered living.

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35. Put these in order from simplest to most complex.

Explanation

Atom is the smallest unit of matter. A molecule is made of two or more atoms. An organelle is made of many molecules. A cell is made of organelles. A tissue is made of cells. An organ is made of tissues.

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36. An organelle found in a liver cell would best be identified as a lysosome if its primary function was which of the following?

Explanation

The lysosome breaks down materials including big molecules and organelles that are not functioning properly.

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37. Papain, an enzyme in papaya, breaks down polymers composed of amino acids. Which of the following substances does papain break down?

Explanation

Proteins are polymers of amino acids.

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38. What effect do acids have on how an enzyme works?

Explanation

Enzymes work best at a specific temperature and pH. If you change the pH or temperature, it will denature the enzyme. This means that the enzyme changes shape.

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39. Mrs. Lewis set up a lab for her biology students using a culture of the small crustacean Daphnia, obtained from a pond that was 20°C. The students are to investigate the effect temperature has on Daphnia. The students will observe the crustacean's heartbeat under the microscope, at the following temperatures: 00C, 100C, 200C, 300C, and 400C. They will count the number of heartbeats per second. What is the independent variable in Mrs. Lewis' experiment?

Explanation

The independent variable is the variable that is purposely changed. It is the one that CAUSES the change in the dependent variable.

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40. Mrs. Lewis set up a lab for her biology students using a culture of the small crustacean Daphnia, obtained from a pond that was 20°C. The students are to investigate the effect temperature has on Daphnia. The students will observe the crustacean's heartbeat under the microscope, at the following temperatures: 0°C, 10°C, 20°C, 30°C, and 40°C. They will count the number of heartbeats per second. If the experiment is designed correctly, what will the students choose for the experimental treatment?

Explanation

You must ONLY change one variable (in this case the temperature of the Daphnia). If you change more than one variable, it is no longer a controlled experiment.

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41. The presence of which structure indicates that cells are NOT bacteria?

Explanation

Prokaryotes (bacteria) do NOT have a nucleus or membrane bound organelles. Chloroplasts are only found in plant cells.

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This is a picture of ___ tissue.
This is a picture of ___ tissue.
This is a picture of ___ tissue.
This is a picture of ___ tissue.
Which of the following chemical formulas represents an organic...
Which physiological system includes the lungs, trachea, and pharynx?
Water is the universal solvent. Why?
Which organelle makes proteins?
In an experiment, a scientist filled 2 open flasks, as shown in the...
One difference between prokaryotes and eukaryotes is that
Enzymes affect the reactions in living cells by changing the
When cells make proteins, they sometimes have to be shipped out of the...
Isotopes are atoms of the same element with the same number of protons...
The organelles that make food through the process of photosynthesis...
Refer to the illustration above. Molecules like this are found in
What is the primary function of most epithelial tissues?
Which organelle produces energy for the cell in the form of ATP?
Which of the following is NOT found in both animal and plant cells?
Which of the following is TRUE about how enzymes function?
Energy is released from ATP when a phosphate group is removed to form...
Energy is released when the bond between
Homeostasis means
Which of the following is NOT a function of proteins?
Which organic molecule below is most closely related to nucleic acids?
Which of the following statements most accurately describes the...
Mrs. Lewis set up a lab for her biology students using a culture of...
Which of the following statements about enzymes is NOT true?
What trait of an ATP molecule enables it to store energy for use by...
Refer to the illustration above. Molecules like this are found in
Carbon atoms can bond together to form all of the following EXCEPT
Lipids are
Which of the following body systems produces hormones that are...
What will happen if an acid is added to a solution?
After learning about viruses in Biology class, Sam decides to have his...
Put these in order from simplest to most complex.
An organelle found in a liver cell would best be identified as a...
Papain, an enzyme in papaya, breaks down polymers composed of amino...
What effect do acids have on how an enzyme works?
Mrs. Lewis set up a lab for her biology students using a culture of...
Mrs. Lewis set up a lab for her biology students using a culture of...
The presence of which structure indicates that cells are NOT bacteria?
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