Variables
A student is studying how far room temperature water would squirt out of a plastic milk carton when 4mm holes are punched at different heights from the bottom of the container. What is the independent, dependent, and constant?
I: Heights of container
D: Distance of water
C: Liquid + milk carton
Which characteristic explains why your arms grow stronger as you age?
Grow and develop
In a light-colored forest, what happens to the number of dark-colored moths due to natural selection?
They decrease
Which group of biomolecules includes fats and oils?
Lipids
What is the difference between the rough and smooth endoplasmic reticulum?
Rough: Ribosomes on the outside
Smooth: No Ribosomes on the outside
A student is studying how long it takes a cat to react to different sounds played at the same volume each time. What is the independent, dependent, and constant?
I: Sounds
D: Cat reaction
C: Volume
Can Nonliving things can have some characteristics of life.
What are the four principals of natural selection?
Over reproduction of offspring
Reproductive advantage
Heritability
Variation
What are the monomers for each macromolecule?
Protein: Amino Acid
Nucleic Acids: Nucleotides
Carbohydrates: Monosaccharide
Lipid: Fatty acid and glycerol
What part of the cell controls what enters and leaves the cell?
Cell membrane
A student is trying to find out which type of fertilizer is the best for getting a plant to grow as tall as possible. She is planning to keep all of the plants she is testing indoors, on the window sill of her classroom. What is the independent, dependent, constant, and control?
I: Fertilizer
D: Plant growth
Constant: Location
Control: No fertilizer
What is the term for an organism’s ability to maintain stable internal conditions?
Homeostasis
What is the difference between inherited and acquired traits?
Inherited: You receive this trait from your parents
Acquired: This is something you learn from the environment around you
What is the function for each macromolecule
Nucleic Acids-Store and transmit genetic info
Carbohydrates-short term energy storage
Lipids-Long term energy storage
Proteins-Little bit of everything but enzymes, muscle contractions, etc
Which organelle is responsible for photosynthesis in plant cells?
Chloroplast
A student wanted to find out if different mixtures would result in an ice cube floating at a different height than only using water. He created solutions of salt water, sugar water, and water with potassium added to it. He used an ice cube tray to create ice cubes that were all the same volume and mass. What is the independent, dependent, constant, and control group?
I: Mixtures
D: Floating height
Constant: Ice cube volume and mass
Control: Water only
What are all living things made of? (smallest unit to be considered living)
One or more cells
What is the difference between natural selection and evolution?
Natural selection is the process (mechanism) of populations changing, evolution is the end result which is a changed population
What is a product and reactant?
Product: Substances you end with
Reactant: Substances you start with
What is the jellylike interior of the cell called?
Cytoplasm
What is the definition for independent variable, dependent variable, constant variable, and control group?
I: The variable that we control the change of
D: Depends on the change of the independent
Constant: What we keep the same throughout the experiment
Control: The group that does not receive the independent variable/change
Which characteristic of life allows tadpoles to turn into frogs?
Development
Give the general steps for how a population changes over time.
An environmental pressure is introduced, then their is variation in the population one is advantageous. Those with the advantageous trait outcompete for resources allowing them to have more babies. Those babies outcompete and also have more babies. This continues until it becomes the group norm which is no longer advantageous thus being an adaptation.
What is the difference between exothermic reactions and endothermic reactions?
Exothermic: release energy as the reaction happens
Endothermic: Absorbs energy as the reaction happens
What is the difference between ribosomes, rough endoplasmic reticulum, and golgi apparatus?
Ribosome: Makes proteins
Rough ER: Transports proteins to the golgi apparatus
Golgi Apparatus: Sorts, modified, and ships proteins