The variable that is changed by you in an experiment is called the ...
independent variable
100
What type of reproduction requires one parent and the offspring are identical to their parent.
asexual
100
Biotic factors in an ecosystem are
Living factors
100
What are the two main green house gases?
carbon dioxide and methane
200
This organelle controls all of the cells activities
the nucleus
200
____________ and _______________ are used to organize and analyze data.
data table and graphs
200
The double helix molecule which holds all your genes.
DNA
200
Abiotic factors in an ecosystem include
temperature
pH
air quality
200
Give an example of a green house gas and explain how it is produced .
CO2 - burning fossil fuels
CH4 - landfills
300
This organelle is much larger in the plant cell than the animal cell.
The vacuole
300
The group that is left in its normal conditions is called the
control group
300
The complimentary base pairing for a DNA molecule is...
A - T
G -C
300
place the following in order of smallest to greatest:
ecosystem, population, biosphere, community and individual
individual - population - community-ecosystem - biosphere
300
Explain how deforestation affects the environment.
increase CO2, loss of habitat and biodiversity
400
The cell is to tissue as organ is to ...
Organ system
400
Why is it important to only have one independent variable in a controlled experiment?
If there is more than one independent variable, then there is no way to determine what is causing the change.
400
Explain how a change in DNA will cause a change in protein structure.
DNA determines mRNA which codes for the amino acid sequence. The amino acid sequence determines the structure of a protein. If the DNA is changed then the mRNA is changed and therefore the structure is changed.
400
give an example of a food chain
answers vary (producer to herbivore to carnivore to top consumer)
400
What is global warming and how has it affected the environment?
answers vary
500
A student brings a specimen and claims it is a living organism. Explain how a microscope could be used to determine if the specimen is a living thing.
The microscope will allow us to observe cells and all living things are made of cells.
500
Ms. Z observes that her flowers are growing taller when she puts sugar in the water. Write a hypothesis to test the affect of sugar on plant growth.
If I increase the amount of sugar in the water, then the plants will grow taller.
500
Explain how a change in protein structure causes a change in protein function.
amino acid sequence determines protein shape. Protein shape determine protein function. If the structure of the protein is changed, then the protein will function differently or not function at all.
500
explain how energy flows through an ecosystem
sun to the producers to the herbivores to the carnivores...all energy comes from the sun.
500
Explain the cause of ozone depletion and how it can affect the environment.