Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why

Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards




share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Science 18 week test

Science study guide for the 7th graders at West Point Middle School.

QuestionAnswer
What are the functions of the cell parts? (no. 1.5) (cytoplasm,mitochondria, and endoplasmic reticulum) Cytoplasm-helps transport things. Mitochondria-produce energy for the cell. Endoplasmic reticulum-carry proteins to dif. parts of the cell.
Understand the increasing validity as you go from hypothesis to conclusion to theory to law. Idea-hypothesis(based on your idea)-conclusion-theory-law
IV The variable that you change (does NOT depend on anything)
DV The variable that changes as the IV changes (depends on the IV)
Constants Things that stay the same all throughout the experiment
Control The standard, or measure, for the experiment
Temperature=25 degrees f,Cricket calls=25 per minute,Temperature=50 degrees f Cricket calls=50 calls per minute, What can you conclude from the data? If the temperature increases, then the cricket calls will decrease.
Why do all scientists use the International system of measurement? So they can communicate their discoveries to each other in a way that they will all understand
Liquid volume=? mL or millileters
Solid mass=? g or grams
Distance=? m or meters
What are the parts of a cell? Cell membrane, cell wall, cytoplasm, nucleus, rough ER, smooth ER, mitochondria, chloroplasts, lysosomes, golgi bodies, vacuoles
Compare active and passive transport in a cell. Active uses energy to move things in and out of the cell. Passive does not use energy to move things in and out of the cell.
How are living things organized? Cells, tissues, organs, organ systems, organism
What is the most abundant compound found in living cells? Water
Compare stimulus and response. A stimulus is a change in an organism's environment that causes it to react. A response is an action or change of behavior caused by a stimulus.
What is the source of energy for all living things? The sun
What is homeostasis? The maintenance of stable internal conditions despite changes in the surroundings Cells, tissues, organs, organ systems, organism
What are the needs of living things? energy, water, living space, stable internal conditions
Compare biogenesis and spontaneous generation. Spontaneous generation is the mistaken theory that living things arise form nonliving things. Biogenesis is the theory that life can only come from life. Obviously, biogenesis is the accepted theory.
Who was Robert Hooke? Robert Hooke was a scientist who was one of the first to observe cells. He built a compound microscope and looked at a cork through it. He saw (voila!) cells.
What are the three parts of the cell theory? All living things are composed fo cells. Cells are the basic unit of structure and function in living things. All cells are produced from other cells.
Which scientists are associated with the cell theory? Robert Hooke, Anton Leeuwenhoek, Matthias Schleiden, and Theodor Schwann
What are the functions of the cell parts? (Cell wall, cell membrane, nucleus, cytoplasm, mitochondria, endoplasmic reticulum) Cell wall-protects the cell. Cell membrane-protects and separates the cell from its environment. Nucleus-directs the cell.
Robert Hooke was a scientist who was one of the first to observe cells. He built a compound microscope and looked at a cork through it. He saw (voila!) cells.
What are the functions of the cell parts (cytoplasm, mitochondria, endoplasmic reticulum) (Cytoplasm-helps transport things. Mitochondria-produce energy for the cell. Endoplasmic reticulum-carry proteins to dif. parts of the cell.
What are the functions of the cell parts? no.2 (ribosomes, golgi bodies, chloroplasts) Ribosomes-produce proteins. Golgi bodies-package and distribut ematerials throughout the cell. Chloroplasts-capture energy from the sun and use it to produce food for the cell.
What are the functions of the cell parts? no. 3 (vacuoles, lysosomes) vacuole-storage for the cell. lysosomes-break down large food particles into smallers ones.
What plant parts are not in an animal cell? Chloroplasts, cell wall.
Compare mitosis to meiosis. Mitosis is cell division. Meiosis is sex cell division in which the cells only have half the number of chromosomes needed to produce offspring.
What are the phases of mitosis and what order do they occur in? Prophase Metaphase Anaphase Telophase Cytokinesis
vacuole-storage for the cell. lysosomes-break down large food particles into smallers ones.
What does meiosis produce? 4 sex cells with half the number of chromosomes.
What is asexual reproduction? The reproductive process that involves only one parent and produces offspring that are identical to the parent.
What are the different types of passive transport? Diffusion, where the molecules move from an area of higher concentration to an area of lower concentration, and osmosis, the diffusion of water molecules.
What are the dif. types of active transport? Transport by proteins, where the cell moves things in and out by using transport proteins that "pick up" the molecule. Transport by engulfing is where the cell engulfs a particle and then forms a vacuole around the particle.
What will happen when a cell is placed in pure water, and then salt water? The cell will fill with pure water. It will shrink because of the high levels of salt.
How are living things organized? Cells, tissues, organs, organ systems, organism
What compound do living things need to undergo cellular respiration? Oxygen
The cell will fill with pure water. It will shrink because of the high levels of salt.
When fermentation (anaerobic respiration) occurs in muscle cells, what happens? Lactic acids build up and make your muscles feel tired, sore, and weak.
Where does photosynthesis occur? In the leaves of the plant or other green parts.
What are the products of photosynthesis? Glucose and Oxygen.
How are photosynthesis and respiration related? They are basically the opposite of each other. One produces food the other breaks it down.
What is DNA? The genetic material that carries information about an organism that is passed from parent to offspring.
Where are genes located? In the chromosomes of the cell
What is a mutation? Any change that occurs in a gene or chromosome
What are proteins made up of? Amino acids
What does transfer RNA bring to messenger RNA during protein synthesis? Amino acids to add to the protein
Compare phenotype and genotype. Phenotype is the physical characteristics of the organism. Genotype is the genetic characteristics of the organism.
What are some common genetic disorders? Cystic fibrosis, Sickle-cell disease, hemophilia, Huntington's disease, and Down syndrome
Who is the father of genetics? Gregor Mendel
What is heredity? The passing of traits from parents to offspring
What did Darwin notice about finches from the Galapagos Islands?They had each adapted to their specific environment Cystic fibrosis, Sickle-cell disease, hemophilia, Huntington's disease, and Down syndrome
How does natural selection power evolution? Only the organisms with the helpful trait survive. This makes for organisms with that trait. Evolution can now act.
When do you use a beaker, graduated cylinder, or flask? When measuring volume
When do you use a ruler, measure tape, or meter stick? When measuring length
When do you use a balance or scale? When measuring mass
Have human activities over the past few hundred years increased the rate of extinctions of plants and animals or decreased them? Increased
What is an adaptation? A trait that helps an organism survive and reproduce
List supporting evidence for evolution by natural selection. Helpful adaptations accumulate in a species because only the organisms with those traits survive. That way the species evolves by the only living things that have the trait will survive.
What causes genetic mutations? Mutations in the DNA of an organism.
A trait that helps an organism survive and reproduce
List supporting evidence for evolution by natural selection. Helpful adaptations accumulate in a species because only the organisms with those traits survive. That way the species evolves by the only living things that have the trait will survive.
What causes genetic mutations? Mutations in the DNA of an organism.
Created by: wpedersen10079