9780393680379 | Chapter 1-20 |All Chapters with Answers
and Rationals
What is a similarity between a liver and kidney cell? - ANSWER: Both cells have the same DNA.
Both cells are generated during the animal's embryological development.
What are some differences between a liver and kidney cell? - ANSWER: Both cells express different
genes, which produces different proteins.
Both cells have different functions in the body.
Which structure could be seen using an electron microscope? - ANSWER: Plasma membrane
DNA
Ribosomes
Which structure could not be seen using an electron microscope? - ANSWER: An electron
What is a con when using a light microscope? - ANSWER: A light microscope cannot view structures
smaller than a bacterium.
What are some pros when using a light microscope? - ANSWER: - Viewing individual cells
- Single-celled organisms
What is the limit of resolution for light microscopy? - ANSWER: 0.2 micrometers.
What are some pros when using a confocal microscopy? - ANSWER: It can be used to view the three-
dimensional structure of a cell or tissue.
What is the smallest object that can be viewed using an electron microscope? - ANSWER: An
individual molecule.
What are some molecules that can be seen using an electron microscope? - ANSWER: - Phospholipid
- Nucleotides
Can an individual ribosome be seen with a fluorescence microscope? - ANSWER: Yes
What do eukaryotic and prokaryotic cells have in common? - ANSWER: - A cell wall
- Nucleic acids
- Ribosomes
- A means of using chemical energy
Is it true that archaea and bacteria differ as much from each other as eukaryotes? - ANSWER: Yes
What method revealed the distinction between archaea and bacteria? - ANSWER: DNA sequencing
What can be seen with a conventional light microscope? - ANSWER: - Embryonic cell
- Bacterium
- Cell nucleus
- Mitochondrion
What's the approximate size of a ribosome? - ANSWER: 20 nanometers
What statement represents the cell theory? - ANSWER: All cells are formed by growth and division of
existing cells.