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Practice Questions - CH 3

Terms in this set (24)

The ________ is the liquid portion of the cell between the plasma membrane and nucleus.

cytoskeleton
peroxisome
cytosol
phospholipids
cytosol
The organelle that acts as enzymes for protein synthesis is the ________.

mitochondrion
ribosome
nucleolus
lysosome
ribosome
Proteins that are partially embedded on one side of the plasma membrane are ________.

integral proteins
transport proteins
peripheral proteins
fluid proteins
peripheral proteins
Which of the following is NOT a function of membrane proteins?

Transport
Energy production
Structural support
Receptors
Energy production
Phagocytosis is important for ________.

body defense against foreign organic matter
promoting inflammation
removal of old and dying cells
All of the choices are correct.
All of the choices are correct.
Intake of a specific molecule from the extracellular compartment by a cell occurs through ________.

phagocytosis
exocytosis
receptor-mediated endocytosis
apoptosis
receptor-mediated endocytosis
Which of the following locations have ciliated cells?

Respiratory and digestive systems
Female reproductive and lymphatic systems
Respiratory and female reproductive systems
Digestive and lymphatic systems
Respiratory and female reproductive systems
The organelle involved in the production of energy is the ________.

mitochondria
ribosome
cytoskeleton
centriole
mitochondria
Cells actively involved in producing proteins would contain large numbers or quantities of ________.

mitochondria
peroxisomes
rough endoplasmic reticulum
nuclei
rough endoplasmic reticulum
Cells which contain large numbers of mitochondria and large amounts of smooth endoplasmic reticulum are most likely ________.

bladder cells
bone cells
lung cells
skeletal muscle cells
skeletal muscle cells
What organelle functions to chemically modify cellular products and package them in vesicles?

Golgi complex
Mitochondrion
Lysosome
Ribosome
Golgi complex
Proteins and mRNA exit the nucleus via ________.

nuclear pores
endoplasmic reticulum
vesicles
centromeres
nuclear pores
The spooling of DNA around histones creates particles called ________.

nucleoli
proteasomes
nucleosomes
euchromatin
nucleosomes
How many proteins does it appear that humans can produce?

25,000
100,000
3 million
3 billion
100,000
Genetic translation occurs in ribosomes located in the ________ of the cell.

nucleus
plasma membrane
cytoplasm
Golgi apparatus
cytoplasm
What enzyme breaks the hydrogen bonds between the bases of DNA in preparation for replication?

DNA polymerase
DNA helicase
Spliceosome
Cyclin D
DNA helicase
Cells which will undergo apoptosis would contain large numbers or quantities of ________.

centrioles
lysosomes
Golgi apparatus
rough endoplasmic reticulum
lysosomes
A friend lifts weights for several months, and his muscles visibly increase in size. He also has calluses on his palms from the barbells. The increase in muscle size is due to ________, while the calluses are due to ________.

anaplasia; hyperplasia
hypertrophy; atrophy
dysplasia; hypertrophy
hypertrophy; hyperplasia
hypertrophy; hyperplasia
Growth due to an increase in cell number is called ________.

hypertrophy
hyperplasia
atrophy
dystrophy
hyperplasia
Growth due to increased cell size is called ________.

hypertrophy
hyperplasia
atrophy
dystrophy
hypertrophy
In epigenetic inheritance ________.

both homologous chromosomes are inactivated
one set of the homologous chromosomes is silenced
only one allele of a homologous pair is expressed
None of the choices are correct.
only one allele of a homologous pair is expressed
Receptor-mediated endocytosis would be most appropriate in a situation where the cell needs to selectively control the amount of a substance that is taken into a cell.

True
False
True
For most individuals, mitochondria that they have came from the mother's fertilized egg cell.

True
False
True
Cells in the G 1 phase of the cell cycle contain half as much DNA as cells in the G 2 phase.

True
False
True
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