Lehninger Biochemistry 5th Edition-Test Bank

Exam Repository For Lehninger Biochemistry 5th Edition

ISBN-10: 9780716771081, ISBN-13: 978-0716771081

Chapter 1   The Fundamentals of Biochemistry

Multiple Choice Questions

1. Cell Foundations

Pages: 2-4 Difficulty: 1     Answer: C

In a bacterial cell, the DNA is located in the:

1. cell envelope.
2. cell membrane.
3. Cell Foundations

Page: 3      Difficulty: 1     Answer: E

A significant transition in the evolution of eukaryotes from prokaryotes was the emergence of:

1. photosynthetic capability.
2. plasma membranes.
3. the nucleus.
4. Cell Foundations

Page: 3      Difficulty: 1     Answer: B

In eukaryotes, the nucleus is surrounded by a double membrane known as the:

1. cell membrane.
2. nuclear envelope.
3. Cell Foundations

Page: 4      Difficulty: 1     Answer: C

The size of living cells is limited, with lengths and diameters typically ranging from:

1. 1 mm to 10 mm.
2. 3 mm to 30 mm.
3. 3 mm to 100 mm.
4. 1 mm to 100 m
5. 1 mm to 300 m

Cell Foundations

Page: 4      Difficulty: 2     Answer: B

Which category of single-celled microorganisms is commonly found thriving in extreme environments?

5. none of the above.

Cell Foundations

Page: 5      Difficulty: 2     Answer: B

The bacterium E. coli depends on simple organic molecules for growth and energy, hence it can be classified as a:

7. Cell Foundations

Page: 6-8   Difficulty: 2     Answer: B

Among the following, choose the sequence of cellular components in increasing size.

1. Amino acid < protein < mitochondrion < ribosome
2. Amino acid < protein < ribosome < mitochondrion
3. Amino acid < ribosome < protein < mitochondrion
4. Protein < amino acid < mitochondrion < ribosome
5. Protein < ribosome < mitochondrion < amino acid

8. Cell Foundations

Page: 10    Difficulty: 2     Answer: A

The three-dimensional structure of macromolecules is primarily maintained through noncovalent interactions. Which one of the following is not an example of a noncovalent interaction?

1. carbon-carbon bonds
2. hydrogen bonds
3. hydrophobic interactions
4. ionic interactions
5. van der Waals interactions

9. Chemical Foundations

Page: 11    Difficulty: 2     Answer: E

Which one of the following is not counted among the four most abundant elements in living organisms?

1. Carbon
2. Hydrogen
3. Nitrogen
4. Oxygen
5. Phosphorus

10. Chemical Foundations

Page: 12-13           Difficulty: 1     Answer: B

The four covalent bonds in methane (CH₄) are arranged around carbon resulting in which one of the following geometries?

1. linear
2. tetrahedral
3. trigonal bipyramidal
4. trigonal planar
5. trigonal pyramidal

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