Organelle Definitions
Organelle that isolates and protects the DNA found in each cell
Nucleus
What is the maximum number of nuclei there can be in a cell?
One
True or False: Ribosomes are essential to the creation of lipids
False: They play an essential role in the creation of proteins, which carry out most cell activities.
What is the difference between the cytoplasm and the cytosol?
The cytosol is the gel-like substance that the organelles float in. The cytoplasm comprises of both the cytosol AND the organelles.
What is the lowest level of organization at which life exists?
Cells
Organelle that delimits and controls the movement in and out of the cell
Cell membrane
What is the difference between smooth and rough endoplasmic reticulum?
Rough has ribosomes, smooth does not.
True or False: Lysosomes are responsible for energy synthesis
False: They are responsible for the breakdown, or digestion, of lipids into small molecules that can be used by the rest of the cell.
What molecule do ribosomes use as the "recipe" to produce proteins?
RNA
What is the only type of molecule that is not a macronutrient in food?
Nucleic acids
Powerhouse of the cell
Mitochondria
Which specific molecules make the cell membrane hydrophobic?
Phospholipids
True or False: Skin, hair and nails belong to the skeletal system
False: They belong to the integumentary system
Which molecule stores the energy that results from cellular respiration and provides it to cells who need it?
ATP
Which type of tissue does fat belong to?
Connective tissue
Organelle that modifies proteins and lipids before they are secreted by the cell or delivered to other organelles
Gogli apparatus
What role does the cytoskeleton play?
It provides shape, support and organization to the cell
True or False: Actin and myosin are proteins involved in the nerve impulse
False: Actin and myosin are involved in muscle contractions
Inside which organelle are the microfilaments located?
Inside the cytoskeleton.
Which type(s) of tissues that are present in the stomach?
Epithelial, connective, muscle, nervous
Organelle that produces proteins and lipids
Endoplasmic reticulum
Which transport process allows molecules to exit the cell by forming a vesicle?
Exocytosis
True or False: Blood is an epithelial tissue
False: It's a connective tissue
What is the difference between smooth and rough endoplasmic reticulum?
The rough portions are dotted with ribosomes and produce proteins.
The smooth portions contain no ribosomes and synthesize lipids. They can also detoxify drugs and store calcium.
Which type of macromolecule are channels in the cell membrane made of?
Proteins