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Unit 3 Semester Study Guide
GJUHSD Study Guide
28
Biology
7th Grade
08/03/2006

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Cards

Term
What holds the cell together and allows nutrients in and waste products out?
Definition
Cell membrane.
Term
What are the energy-converting organelles?
Definition
Mitochondria and chloroplasts
Term
What are the cell organelles that convert sugar to usable energy called?
Definition
Mitocondria.
Term
What is the cell organelle which convert light energy into sugar called?
Definition
Chloroplast.
Term
What is the part of a plant cell which helps it maintain its shape called?
Definition
Cell wall.
Term
What organelles are found in plant cells, but not in animal cells?
Definition
Cell wall and chloroplasts.
Term
What organelles are found in both plant and animal cells?
Definition
Nucleus, mitochondria, cell membrane.
Term
Why do plant cells need chloroplasts?
Definition
Plants do not eat and need to convert light energy into sugar.
Term
Why do animal cells not need chloroplasts?
Definition
Animals eat food to get sugar which is converted to energy.
Term
Why do both animal cells and plant cells have mitochondria?
Definition
Both animal cells and plant cells need to convert sugar into usable energy.
Term
What is the cell organelle which holds the hereditary information of the cell called?
Definition
Nucleus.
Term
What is the heredity material in a cell called?
Definition
DNA: deoxyribonucleic acid.
Term
What is the function of DNA?
Definition
Provide instructions for the function of the cell.
Term
What are the basic units of living things?
Definition
Cells.
Term
A person has about 200 different kinds of cells; each specialized to do a particular job. This means that a person is what type of organism?
Definition
Multicellular.
Term
What are some examples of plant and animal organs?
Definition
Plant leaf, stem, stamen, anthers, stomach, heart, lung etc.
Term
List the levels of organization in order from smallest to largest.
Definition
Cells, tissues, organs, organ systems, organism
Term
What works together to form an organ?
Definition
Tissues.
Term
Each level of organization is made up of smaller levels that do what?
Definition
Perform a particular function.
Term
What is the organ system which functions to provide structural support for the body called?
Definition
Skeletal system.
Term
What is the organ system which functions to produce offspring called?
Definition
Reproductive system.
Term
What is the organ system which functions to carry nutrients and oxygen around the body called?
Definition
Cardiovascular system.
Term
What is the organ system which functions to help the body move called?
Definition
Muscular system.
Term
What organelle is the letter A pointing to? [image][image]
Definition
Cell membrane
Term
What organelle is the letter B pointing to? [image][image]
Definition
Cell wall.
Term
What organelle is the letter C pointing to? [image][image]
Definition
Nucleus.
Term
What organelle is the letter D pointing to? [image][image]
Definition
Mitochondria (or mitochondria when more than one).
Term
What organelle is the letter E pointing to? [image][image]
Definition
Chloroplast.
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