Jason tests whether pepsi helps students memorize more science terms. Give a hypothesis for her test.
Pepsi will help students memorize more terms/Pepsi will not help students memorize more terms
100
In which direction do arrows point in food chains and webs?
Towards the organism receiving the energy/towards the consumer
100
Autotroph is another name for this kind of organism
What are producers/plants?
100
Bacteria are _______________ while viruses are NOT.
organisms
100
Eukaryotes have this and prokaryotes do not.
What is a nucleus?
200
Why is it important to have a large sample size in an experiment?
More individuals tested gives us a more accurate result. It makes the test more valid.
200
Why is water considered a limiting factor?
When an ecosystem loses water, plants and eventually other organisms die.
200
A primary consumer only eats this type of organism.
What are producers/plants/autotrophs
200
This word describes the internal balance that all organisms are capable of maintaining
homeostasis
200
Multicellular organisms have organs capable of completing life processes. Single-celled organisms have these to do the same kinds of processes.
What are organelles?
300
Raven wants to see how sunlight affects plant growth. What will be her dependent variable?
plant growth
300
A type of bacteria lives in our intestines and finds shelter there. It breaks down some of our food, making digestion easier. This is the type of relationship being described.
What is mutualism?
300
This type of organism is responsible for breaking down dead matter so that plants may access raw nutrients in the soil.
What are decomposers?
300
All organisms in this kingdom are heterotrophic eukaryotes that break down dead matter
What are fungi?
300
A plant cell can be distinguished from an animal cell since it has this unique structure
What is a chloroplast or cell wall?
400
A student tests whether listening to background music and pulse rate are related. The student designs an experiment to test this hypothesis. What would be an appropriate control for this experiment?
Measuring the pulse rate of students who are NOT listening to music.
400
Why is a food web more realistic than a food chain?
Food webs show multiple pathways of organism relationships. In the real world, organisms tend to have multiple food sources.
400
Describe what would happen to the producer population if all the barn owls in a forest suddenly died of disease.
It would decrease because rodents would no longer have a predator. With more rodents, more producers would be eaten up.
400
All living things must be able to breakdown and use nutrients. This word describes this process.
What is metabolism?
400
This structure is where cellular respiration takes place.
What is the mitochondria?
500
An investigation was carried out to determine the effect of exercise on the rate at which a person can squeeze a clothespin. What is the independent variable?
Exercise
500
A stable ecosystem has this important feature.
What is biodiversity?
500
These organisms are not native to their new ecosystems and out-compete many of the original species.
What are invasive species?
500
This is how our atmosphere started gaining more oxygen billions of years ago.
Early bacteria began to go through photosynthesis and released oxygen in the process.
500
These 2 structures are essential in the process of protein synthesis.