BIO 133 EXAM 1 QUESTIONS AND ANSWERS
The idea that humans can be improved by strictly controlled breeding is called
.- Answer - eugenics
1. What is preimplantation genetic diagnosis (PGD)?- Answer - A technique used to
identify genetic defects in embryos created through in vitro fertilization (IVF) before pregnancy.
2. Enzymes are usually- Answer - proteins
3. The genes found in a DNA molecule code for- Answer - proteins
4. Which of the following is a molecule with a polar head and hydrophobic tails
used to make cell membranes?- Answer - phospholipid
5. Carbohydrates, lipids, proteins, and nucleic acids are classes of
6. Molecules that contain carbon are - Answer - organic
7. Subunits of these macromolecules are called - Answer -
monomers
8. Which of the following is an accurate example of carbohydrates providing cell
identity?- Answer - Being the basis for the ABO blood type.
9. True or False? DNA and RNA are examples of nucleic acids.- Answer - true
10. The building blocks of proteins are- Answer - - Answer - amino acids.
11. There are different amino acids that are used by organisms
for protein synthesis.- Answer - 20
12. RNA's nitrogenous bases include .- Answer - uracil and guanine
13. All of the following are functions of proteins EXCEPT the
.- Answer - storage of genetic information
14. Autophagy removes old damaged organelles like mitochondria. Decreased
autophagy results in degeneration and inflammation and may result in the
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,"symptoms" of aging. Which of the following is most directly involved in the
process of autophagy?- Answer - lysosomes
15. The liver is the main detoxification organ in the human body. Based upon
this function, one would expect to find high levels of in
16. True or False? Proteins are the main component of the cell membrane.-
Answer - false
17. Your friend is taking a course in cytology and is examining a tissue under an
electron microscope. She notices in particular that the tissue has a high concen-
tration of lysosomes. She is curious about why there are so many lysosomes in
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, this tissue. You can help. Your response would be that this is a tissue that-
Answer - plays a role in breaking down used organelles
18. Tay-Sachs disease is a human genetic abnormality that results in cells accu-
mulating and becoming clogged with very large, complex, undigested lipids.
Which cellular organelle is most likely defective in this condition?- Answer - the
lysosomes
19. You live in an area that has recently been impacted by a chemical spill into
your water supply. You did not learn of the spill in time and you drank some
of the contaminated water. What change do you expect to see in some of your
cells?- Answer - Some cells will have more smooth ER
20. What must molecules pass through to enter and leave a cell?- Answer - plasma
membrane
21. What makes the surface of the rough endoplasmic reticulum appear differ-
ent from the smooth endoplasmic reticulum?- Answer - The surface of the rough ER is
studded with ribosomes for protein synthesis
22. nucleus- Answer - genetic material storage
23. smooth endoplasmic reticulum- Answer - detoxify lipds
24. rough endoplasmic reticulum- Answer - protein synthesis
25. golgi apparatus- Answer - special packaging of proteins for export
26. lysosome- Answer - garbage disposal of cell
27. mitchondria- Answer - maternally inherited
28. cell membrane- Answer - control movement of substances in and out of cell
29. cytoskeleton- Answer - maintain cell shape and structure
30. Proto-oncogenes are- Answer - oncogenes that have not been mutated.
31. which statement is false about cancer cells?- Answer - Cancer cells can only result during
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The idea that humans can be improved by strictly controlled breeding is called
.- Answer - eugenics
1. What is preimplantation genetic diagnosis (PGD)?- Answer - A technique used to
identify genetic defects in embryos created through in vitro fertilization (IVF) before pregnancy.
2. Enzymes are usually- Answer - proteins
3. The genes found in a DNA molecule code for- Answer - proteins
4. Which of the following is a molecule with a polar head and hydrophobic tails
used to make cell membranes?- Answer - phospholipid
5. Carbohydrates, lipids, proteins, and nucleic acids are classes of
6. Molecules that contain carbon are - Answer - organic
7. Subunits of these macromolecules are called - Answer -
monomers
8. Which of the following is an accurate example of carbohydrates providing cell
identity?- Answer - Being the basis for the ABO blood type.
9. True or False? DNA and RNA are examples of nucleic acids.- Answer - true
10. The building blocks of proteins are- Answer - - Answer - amino acids.
11. There are different amino acids that are used by organisms
for protein synthesis.- Answer - 20
12. RNA's nitrogenous bases include .- Answer - uracil and guanine
13. All of the following are functions of proteins EXCEPT the
.- Answer - storage of genetic information
14. Autophagy removes old damaged organelles like mitochondria. Decreased
autophagy results in degeneration and inflammation and may result in the
1/
17
,"symptoms" of aging. Which of the following is most directly involved in the
process of autophagy?- Answer - lysosomes
15. The liver is the main detoxification organ in the human body. Based upon
this function, one would expect to find high levels of in
16. True or False? Proteins are the main component of the cell membrane.-
Answer - false
17. Your friend is taking a course in cytology and is examining a tissue under an
electron microscope. She notices in particular that the tissue has a high concen-
tration of lysosomes. She is curious about why there are so many lysosomes in
2/
17
, this tissue. You can help. Your response would be that this is a tissue that-
Answer - plays a role in breaking down used organelles
18. Tay-Sachs disease is a human genetic abnormality that results in cells accu-
mulating and becoming clogged with very large, complex, undigested lipids.
Which cellular organelle is most likely defective in this condition?- Answer - the
lysosomes
19. You live in an area that has recently been impacted by a chemical spill into
your water supply. You did not learn of the spill in time and you drank some
of the contaminated water. What change do you expect to see in some of your
cells?- Answer - Some cells will have more smooth ER
20. What must molecules pass through to enter and leave a cell?- Answer - plasma
membrane
21. What makes the surface of the rough endoplasmic reticulum appear differ-
ent from the smooth endoplasmic reticulum?- Answer - The surface of the rough ER is
studded with ribosomes for protein synthesis
22. nucleus- Answer - genetic material storage
23. smooth endoplasmic reticulum- Answer - detoxify lipds
24. rough endoplasmic reticulum- Answer - protein synthesis
25. golgi apparatus- Answer - special packaging of proteins for export
26. lysosome- Answer - garbage disposal of cell
27. mitchondria- Answer - maternally inherited
28. cell membrane- Answer - control movement of substances in and out of cell
29. cytoskeleton- Answer - maintain cell shape and structure
30. Proto-oncogenes are- Answer - oncogenes that have not been mutated.
31. which statement is false about cancer cells?- Answer - Cancer cells can only result during
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17
