NLN Pre-Entrance Science
What does interstitial fluid contain? - Answer-Amino acids, sugars, fatty acids, hormones,
neurotransmitters, and salts.
What does the plasma membrane contain? - Answer-Receptors that bind with specific substances. It
allows for special entry or signals the cell to perform a certain activity.
What do ribosomes do? - Answer-Sites for protein synthesis in the cell.
What does the ER do? - Answer-Serves as a means for transport within the cell and is made up of many
channels.
What does the rough ER do? - Answer-Serves to store and deliver the proteins made by the attached
ribosomes.
What does the smooth ER do? - Answer-Performs varying functions (found in a variety of cells) including
the storage of enzymes and minerals and the folding of proteins, among other things. It is thought to be
involved in the detoxification of chemicals and the metabolism of fats.
What does the Golgi Complex do? - Answer-Modifies and packages proteins destined for use in the cell
or for export from the cell.
What are lysosomes? - Answer-Sacs that contains strong digestive enzymes. These sacs are responsible
for digesting cell structures that are no longer living or that are malfunctioning, and for digesting waste.
,How can plant cells be distinguished? - Answer-They are surrounded by a cell wall and that they contain
chloroplasts.
What is the cell wall in a plant cell essential for? - Answer-Protection of the cell, maintenance of the
shape, and water balance.
What do chloroplasts contain and what is it necessary for? - Answer-Chlorophyll, which is necessary for
photosynthesis.
What else do plant cells have? - Answer-Large vacuoles.
What are vacuoles? - Answer-Compartments in the cytoplasm that act as places for secretion, excretion,
and storage.
Where is DNA found? - Answer-The nucleus.
In what form is DNA found in the nucleus? - Answer-Chromatin and chromosomes.
Where is DNA found in the nucleus when the cell is dividing? - Answer-In condensed rod-shaped bodies
called chromosomes.
Where is DNA found in the nucleus when the cell is not dividing? - Answer-Loosely-structured
chromatin.
What is meiosis? - Answer-Production of gametes.
What is a zygote? - Answer-Union of sperm and egg.
, What is some evidence that supports evolution theory? - Answer-The fossil record.
What is the fossil record? - Answer-Consists of remnants or traces of organisms from past geologic ages.
Time lime for the appearance of different vertebrates (animals with backbones): fish, amphibians,
reptiles, and finally mammals and birds.
What is taxonomy? - Answer-The study of scientific classification.
What is the first unit of classification? - Answer-Kingdoms (the broadest unit)-animal, plant, monera
(bacteria) protist (protozoa, algae, and some molds), and fungi (molds, mushrooms, yeasts, and the like).
What is the second unit of classification? - Answer-Phylum.
What is the third unit of classification? - Answer-Class.
What is the forth unit of classification? - Answer-Order.
What is the fifth unit of classification? - Answer-Family.
What is the sixth unit of classification? - Answer-Genus.
What is the seventh unit of classification? - Answer-Species.
What is osmosis? - Answer-Water moves from an area of high water concentration (or low particle
concentration) to an area of low water concentration (high particle concentration).
What does interstitial fluid contain? - Answer-Amino acids, sugars, fatty acids, hormones,
neurotransmitters, and salts.
What does the plasma membrane contain? - Answer-Receptors that bind with specific substances. It
allows for special entry or signals the cell to perform a certain activity.
What do ribosomes do? - Answer-Sites for protein synthesis in the cell.
What does the ER do? - Answer-Serves as a means for transport within the cell and is made up of many
channels.
What does the rough ER do? - Answer-Serves to store and deliver the proteins made by the attached
ribosomes.
What does the smooth ER do? - Answer-Performs varying functions (found in a variety of cells) including
the storage of enzymes and minerals and the folding of proteins, among other things. It is thought to be
involved in the detoxification of chemicals and the metabolism of fats.
What does the Golgi Complex do? - Answer-Modifies and packages proteins destined for use in the cell
or for export from the cell.
What are lysosomes? - Answer-Sacs that contains strong digestive enzymes. These sacs are responsible
for digesting cell structures that are no longer living or that are malfunctioning, and for digesting waste.
,How can plant cells be distinguished? - Answer-They are surrounded by a cell wall and that they contain
chloroplasts.
What is the cell wall in a plant cell essential for? - Answer-Protection of the cell, maintenance of the
shape, and water balance.
What do chloroplasts contain and what is it necessary for? - Answer-Chlorophyll, which is necessary for
photosynthesis.
What else do plant cells have? - Answer-Large vacuoles.
What are vacuoles? - Answer-Compartments in the cytoplasm that act as places for secretion, excretion,
and storage.
Where is DNA found? - Answer-The nucleus.
In what form is DNA found in the nucleus? - Answer-Chromatin and chromosomes.
Where is DNA found in the nucleus when the cell is dividing? - Answer-In condensed rod-shaped bodies
called chromosomes.
Where is DNA found in the nucleus when the cell is not dividing? - Answer-Loosely-structured
chromatin.
What is meiosis? - Answer-Production of gametes.
What is a zygote? - Answer-Union of sperm and egg.
, What is some evidence that supports evolution theory? - Answer-The fossil record.
What is the fossil record? - Answer-Consists of remnants or traces of organisms from past geologic ages.
Time lime for the appearance of different vertebrates (animals with backbones): fish, amphibians,
reptiles, and finally mammals and birds.
What is taxonomy? - Answer-The study of scientific classification.
What is the first unit of classification? - Answer-Kingdoms (the broadest unit)-animal, plant, monera
(bacteria) protist (protozoa, algae, and some molds), and fungi (molds, mushrooms, yeasts, and the like).
What is the second unit of classification? - Answer-Phylum.
What is the third unit of classification? - Answer-Class.
What is the forth unit of classification? - Answer-Order.
What is the fifth unit of classification? - Answer-Family.
What is the sixth unit of classification? - Answer-Genus.
What is the seventh unit of classification? - Answer-Species.
What is osmosis? - Answer-Water moves from an area of high water concentration (or low particle
concentration) to an area of low water concentration (high particle concentration).
