GED Science Exam Questions (Correct Answers)
Points to remember!Correct AnswersAll living things have several things in common.
The cell is the basic functional unit of a living organism. Ecosystems are home to
thousands of organisms, each playing a necessary role. ABOUT 40% THE GED
SCIENCE QUESTIONS WILL BE ABOUT LIFE SCIENCES.
CellCorrect Answersthe basic functional unit of an organism
DNACorrect Answerscontains all the instructions needed to direct a cell's activities
MitosisCorrect Answersreplication of a cell & its DNA
Life science (or biology)Correct Answersis the study of all living things, from plants to
animals and humans.
A biologist is someone who-Correct Answersstudies organisms, or living things, of
which there are over 1.5 million different types. Biologist study their structures, their life
cycles, and their relationship to their environment.
Scientist have come up with a way to separate the living from the non-living:Correct
Answers-Has a life cycle (from birth to death)
-Has the ability to move or grow
-Has the need to find sources of energy as in feeding
-Has the ability to respond to stimuli, or something in the environment, that causes a
change in behavior
-Has the ability to reproduce
-Made up of cells
Life science coversCorrect Answersevery organism from the smallest, single-celled
bacterium to the largest animal on earth, the blue whale
All organisms have similarities,Correct Answerssuch as needing energy to grow,
interacting with their surroundings, and producing offspring. (No matter how big or
small, all of these organisms are alike in that they are composed of cells.
The CellCorrect Answersthe cell is the basic functional unit of an organism, meaning
that each cell has the potential to fulfill all the functions of that organism. Cells also must
arise from other pre-existing cells
4 pts of a CellCorrect Answers1. The first part of a cell is the membrane
2. The second part of a cell is the cytoplasm
3. The third part of a cell is the nucleus
4. The fourth part consists of the many organelles (ALL CELLS HAVE FOUR DISTINCT
PARTS)
Cell mambraneCorrect Answerscells are surrounded by a thin covering, which
separates the cell from its environment.This membrane is called the "cell membrane"
(or plasma membrane) it acts as a barrier or wall.
Cell membranes are semipermeable,Correct Answersmeaning that they will allow some
substances to move both into and out of cells through the cell membrane. This allows
the cell to take in the required nutrients and expel any waste products.
CytoplasmCorrect Answersthe inside of the cell, is the semi-liquid substance in which all
of the internal "organs" of the cell are dissolved. (this is where much of the biochemical
activity of the cell occurs)
The main component of cytoplasm isCorrect AnswersWATER
, NucleusCorrect AnswersCells must create DNA, the genetic material which allows a cell
to replicate, & this DNA in a specific region in the cell called the nucleus.
The nucleus & its DNA hold insideCorrect AnswersAll of the information needed to
function & create another cell.
Cells have "Organelles"Correct AnswersWhich are structures (of which the nucleus is
one) within the cytoplasm that preform certain specialized duties.
The Cell Wall of a plantCorrect AnswersAll plants have cell walls. The cell wall gives a
plant cell a more inflexible structure, preventing the cells movement & giving it more
support. They're found outside the cell membrane. (plants are made up of cells, inside
these cells are chloroplast, chloroplast contains chlorophyll
Plants are made up of cells, inside these cells are ChloroplastsCorrect
AnswersChloroplast contain chlorophyll, chlorophyll contains the green pigment, which
makes the plants green, it is responsible for absorbing energy from sunlight.
EnergyCorrect Answersallows for simple functions like growth & reproduction, all living
things require energy to live, how we get that energy depends on what we are
PhotosynthesisCorrect Answersis the process by which plants, algae, & some bacteria
can convert the sun's energy into a chemical energy then used by the organisms to
function. (Plants are the only organisms that can do such a thing)
Pt 1 of the Photosynthesis Process (Four part process)Correct AnswersPlants take in -
>carbon dioxide<-(CO2) from the air & water <-(H2O) from its roots
Pt 2 of the Photosynthesis ProcessCorrect AnswersThe energy from the sunlight is
collected by chloroplasts within the plant's leaves & is used to transform carbon dioxide
& water into glucose & oxygen(CO2+H2O=glucose & oxygen)
Pt 3 of the Photosynthesis ProcessCorrect AnswersOxygen is released into the air,
which will eventually be used by most living organisms, especially animals.
Pt 4 of the Photosynthesis ProcessCorrect AnswersGlucose is either used by the plant
for its life function, or stored away for future use. This storage of glucose (a form of
chemical energy) is what feeds humans & animals.
Cellular RespirationCorrect Answersin this process oxygen reacts to glucose to yield
carbon dioxide, (water + energy) this means glucose + oxygen yields carbon dioxide,
water + energy. Because of photosynthesis & cellular respiration, oxygen + carbon
dioxide are balanced in the atmosphere.
Key to remember*Correct AnswersAll living organisms must obtain energy to stay alive.
Different organisms need different sources of energy, but each is dependent on those
organisms for its survival.
What two things does a plant need to take up from its environment before sunlight can
be used for photosynthesis?Correct Answerswater (H2O) & carbon dioxide (CO2)
What does a plant "breathe out", or expel, after photosynthesis has taken place?Correct
AnswersOxygen
Where does a plant get its initial energy to create the glucose it needs?Correct
AnswersSunlight
Green plants are green because?Correct Answersleaves contain green pigment that
absorbs all colors except green
VertebratesCorrect Answersan animal of a large group distinguished by the possession
of a backbone or spinal column, including mammals, birds, reptiles, amphibians, and
fishes.
Points to remember!Correct AnswersAll living things have several things in common.
The cell is the basic functional unit of a living organism. Ecosystems are home to
thousands of organisms, each playing a necessary role. ABOUT 40% THE GED
SCIENCE QUESTIONS WILL BE ABOUT LIFE SCIENCES.
CellCorrect Answersthe basic functional unit of an organism
DNACorrect Answerscontains all the instructions needed to direct a cell's activities
MitosisCorrect Answersreplication of a cell & its DNA
Life science (or biology)Correct Answersis the study of all living things, from plants to
animals and humans.
A biologist is someone who-Correct Answersstudies organisms, or living things, of
which there are over 1.5 million different types. Biologist study their structures, their life
cycles, and their relationship to their environment.
Scientist have come up with a way to separate the living from the non-living:Correct
Answers-Has a life cycle (from birth to death)
-Has the ability to move or grow
-Has the need to find sources of energy as in feeding
-Has the ability to respond to stimuli, or something in the environment, that causes a
change in behavior
-Has the ability to reproduce
-Made up of cells
Life science coversCorrect Answersevery organism from the smallest, single-celled
bacterium to the largest animal on earth, the blue whale
All organisms have similarities,Correct Answerssuch as needing energy to grow,
interacting with their surroundings, and producing offspring. (No matter how big or
small, all of these organisms are alike in that they are composed of cells.
The CellCorrect Answersthe cell is the basic functional unit of an organism, meaning
that each cell has the potential to fulfill all the functions of that organism. Cells also must
arise from other pre-existing cells
4 pts of a CellCorrect Answers1. The first part of a cell is the membrane
2. The second part of a cell is the cytoplasm
3. The third part of a cell is the nucleus
4. The fourth part consists of the many organelles (ALL CELLS HAVE FOUR DISTINCT
PARTS)
Cell mambraneCorrect Answerscells are surrounded by a thin covering, which
separates the cell from its environment.This membrane is called the "cell membrane"
(or plasma membrane) it acts as a barrier or wall.
Cell membranes are semipermeable,Correct Answersmeaning that they will allow some
substances to move both into and out of cells through the cell membrane. This allows
the cell to take in the required nutrients and expel any waste products.
CytoplasmCorrect Answersthe inside of the cell, is the semi-liquid substance in which all
of the internal "organs" of the cell are dissolved. (this is where much of the biochemical
activity of the cell occurs)
The main component of cytoplasm isCorrect AnswersWATER
, NucleusCorrect AnswersCells must create DNA, the genetic material which allows a cell
to replicate, & this DNA in a specific region in the cell called the nucleus.
The nucleus & its DNA hold insideCorrect AnswersAll of the information needed to
function & create another cell.
Cells have "Organelles"Correct AnswersWhich are structures (of which the nucleus is
one) within the cytoplasm that preform certain specialized duties.
The Cell Wall of a plantCorrect AnswersAll plants have cell walls. The cell wall gives a
plant cell a more inflexible structure, preventing the cells movement & giving it more
support. They're found outside the cell membrane. (plants are made up of cells, inside
these cells are chloroplast, chloroplast contains chlorophyll
Plants are made up of cells, inside these cells are ChloroplastsCorrect
AnswersChloroplast contain chlorophyll, chlorophyll contains the green pigment, which
makes the plants green, it is responsible for absorbing energy from sunlight.
EnergyCorrect Answersallows for simple functions like growth & reproduction, all living
things require energy to live, how we get that energy depends on what we are
PhotosynthesisCorrect Answersis the process by which plants, algae, & some bacteria
can convert the sun's energy into a chemical energy then used by the organisms to
function. (Plants are the only organisms that can do such a thing)
Pt 1 of the Photosynthesis Process (Four part process)Correct AnswersPlants take in -
>carbon dioxide<-(CO2) from the air & water <-(H2O) from its roots
Pt 2 of the Photosynthesis ProcessCorrect AnswersThe energy from the sunlight is
collected by chloroplasts within the plant's leaves & is used to transform carbon dioxide
& water into glucose & oxygen(CO2+H2O=glucose & oxygen)
Pt 3 of the Photosynthesis ProcessCorrect AnswersOxygen is released into the air,
which will eventually be used by most living organisms, especially animals.
Pt 4 of the Photosynthesis ProcessCorrect AnswersGlucose is either used by the plant
for its life function, or stored away for future use. This storage of glucose (a form of
chemical energy) is what feeds humans & animals.
Cellular RespirationCorrect Answersin this process oxygen reacts to glucose to yield
carbon dioxide, (water + energy) this means glucose + oxygen yields carbon dioxide,
water + energy. Because of photosynthesis & cellular respiration, oxygen + carbon
dioxide are balanced in the atmosphere.
Key to remember*Correct AnswersAll living organisms must obtain energy to stay alive.
Different organisms need different sources of energy, but each is dependent on those
organisms for its survival.
What two things does a plant need to take up from its environment before sunlight can
be used for photosynthesis?Correct Answerswater (H2O) & carbon dioxide (CO2)
What does a plant "breathe out", or expel, after photosynthesis has taken place?Correct
AnswersOxygen
Where does a plant get its initial energy to create the glucose it needs?Correct
AnswersSunlight
Green plants are green because?Correct Answersleaves contain green pigment that
absorbs all colors except green
VertebratesCorrect Answersan animal of a large group distinguished by the possession
of a backbone or spinal column, including mammals, birds, reptiles, amphibians, and
fishes.
