Questions
1. Which one of the following eukaryotic cell structures does not contain DNA?
a. a nucleus
b. a mitochondrion
c. the endoplasmic reticulum
d. a chloroplast
2. Which of the following is not an accurate description of a chromosome?
a. It is a colored body localized in the nucleus.
b. It is a protein and nucleic acid complex.
c. It is the cellular structure that contains the genetic material.
d. In eukaryotes, it is composed of many DNA molecules attached end to end.
3. A centriole is an organelle that is:
a. present in the center of a cell's cytoplasm
b. composed of microtubules and important for organizing the spindle fibers
c.surrounded by a membrane
d.part of a chromosome
4. The rough endoplasmic reticulum is:
a. an intracellular double-membrane system to which ribosomes are attached
b. an intracellular membrane that is studded with microtubular structures
c. a membranous structure found within mitochondria
d.only found in prokaryotic cells
5. In the nucleus of eukaryotic cells, the genetic material is complexed with protein and organized into linear structures called:
a. centrioles
b. histones
c. chromosomes
d. plasmids
6. Which of the following statements does not apply to the nuclear envelope?
a. It is a double membrane.
b. It has pores through which material enters and leaves.
c. It is continuous with the endoplasmic reticulum.
d. It has infoldings to form cristae.
7. Some proteins are found in the plasma membrane. What part of the protein is within the membrane itself?
a. hydrophilic region
b. hydroponic region
c. hydrophobic region
d. hydrocoel region
8. What is the simplest level of packing of the eukaryotic chromosome?
a. the nucleolus
b. the nucleoid
c. the nucleosome
d. the nucleoplasm
9. Lysosomes are formed by budding from which cellular organelle?
a. smooth endoplasmic reticulum
b. Golgi apparatus
c. rough endoplasmic reticulum
d. nucleus
10. All peroxisomes carry out this function:
a. break down fats and amino acids into smaller molecules that can be used for energy production by mitochondria
b. digest macromolecules using the hydrolytic enzymes they contain
c.synthesize membrane components such as fatty acids and phospholipids
d. control the flow of ions into and out of the cell
11. Which of the following does not apply to chloroplasts?
a. They contain chlorophyll and the enzymes required for photosynthesis.
b. They contain an internal membrane system consisting of thylakoids.
c. They synthesize ATP (adenosine triphosphate) from ADP (adenosine diphosphate) and Pi (inorganic phosphate).
d. They are bounded by two membranes, the inner of which is folded into the cristae.
a. a nucleus
b. a mitochondrion
c. the endoplasmic reticulum
d. a chloroplast
2. Which of the following is not an accurate description of a chromosome?
a. It is a colored body localized in the nucleus.
b. It is a protein and nucleic acid complex.
c. It is the cellular structure that contains the genetic material.
d. In eukaryotes, it is composed of many DNA molecules attached end to end.
3. A centriole is an organelle that is:
a. present in the center of a cell's cytoplasm
b. composed of microtubules and important for organizing the spindle fibers
c.surrounded by a membrane
d.part of a chromosome
4. The rough endoplasmic reticulum is:
a. an intracellular double-membrane system to which ribosomes are attached
b. an intracellular membrane that is studded with microtubular structures
c. a membranous structure found within mitochondria
d.only found in prokaryotic cells
5. In the nucleus of eukaryotic cells, the genetic material is complexed with protein and organized into linear structures called:
a. centrioles
b. histones
c. chromosomes
d. plasmids
6. Which of the following statements does not apply to the nuclear envelope?
a. It is a double membrane.
b. It has pores through which material enters and leaves.
c. It is continuous with the endoplasmic reticulum.
d. It has infoldings to form cristae.
7. Some proteins are found in the plasma membrane. What part of the protein is within the membrane itself?
a. hydrophilic region
b. hydroponic region
c. hydrophobic region
d. hydrocoel region
8. What is the simplest level of packing of the eukaryotic chromosome?
a. the nucleolus
b. the nucleoid
c. the nucleosome
d. the nucleoplasm
9. Lysosomes are formed by budding from which cellular organelle?
a. smooth endoplasmic reticulum
b. Golgi apparatus
c. rough endoplasmic reticulum
d. nucleus
10. All peroxisomes carry out this function:
a. break down fats and amino acids into smaller molecules that can be used for energy production by mitochondria
b. digest macromolecules using the hydrolytic enzymes they contain
c.synthesize membrane components such as fatty acids and phospholipids
d. control the flow of ions into and out of the cell
11. Which of the following does not apply to chloroplasts?
a. They contain chlorophyll and the enzymes required for photosynthesis.
b. They contain an internal membrane system consisting of thylakoids.
c. They synthesize ATP (adenosine triphosphate) from ADP (adenosine diphosphate) and Pi (inorganic phosphate).
d. They are bounded by two membranes, the inner of which is folded into the cristae.