Cell Theory
A scientist looks at a frog, a flower, and a mushroom under a microscope. She notices they are all made of tiny repeating structures. What are those structures called?
Cells
A student observes a cell under a microscope and sees a clear nucleus inside. Is the cell prokaryotic or eukaryotic?
Eukaryotic cell
A scientist is studying trees, mushrooms, and dead leaves in a forest. What type of factors are these?
Biotic factors
A science class is studying how organisms interact by hunting, competing, or living together. What are the three major relationship types they are studying?
Predatory, competitive, and symbiotic
How can camouflage help an organism survive?
It helps the organism hide from predators.
A student says, “Cells can appear out of nowhere.” Which part of cell theory proves the student is incorrect?
A bacteria cell is observed under a microscope. The scientist notices it does not contain a nucleus. What type of cell is it?
Prokaryotic cell
Sunlight, water, temperature, and soil all affect the organisms living in a pond. What type of factors are these?
Abiotic factors
A bee gets nectar from a flower while helping pollinate the flower. What type of symbiotic relationship is this?
Mutualism
How can a variation become a disadvantage?
A variation can make it harder to survive in the environment.
A cell needs instructions to grow, reproduce, and carry out activities. Which organelle controls all of these functions?
The nucleus
An amoeba can survive and carry out all life functions using only one cell. What term describes this organism?
Made of one cell
A group of deer living together in the same forest is an example of what level of organization?
Population
A tick feeds on a dog’s blood and harms the dog. What type of relationship is this?
Parasitism
After a major climate change, some organisms survive better than others because of special traits they have. Why are variations important?
Variations can help organisms survive environmental changes
A cell needs to let nutrients in and waste out while protecting itself. Which structure performs this job?
The cell membrane
A human body contains trillions of cells working together. What term describes humans?
Multicellular
A forest contains deer, birds, insects, trees, and fungi living together. What level of organization is this?
Community
A bird builds a nest in a tree. The bird benefits, but the tree is neither helped nor harmed. What relationship is this?
Commensalism
A rabbit with bright neon fur is easy for predators to spot. Is this variation advantageous or disadvantageous?
Disadvantageous
A puppy looks similar to its parents because it inherited genetic information from them. What is this genetic material called?
D.N.A
A sunflower uses sunlight to make food, but a rabbit must eat plants to survive. Which organism is autotrophic and which is heterotrophic?
The sunflower is autotrophic and the rabbit is heterotrophic.
A pond contains fish, plants, bacteria, rocks, sunlight, and water all interacting together. What is this called?
An ecosystem
Two wolves hunt the exact same rabbits for food in one area. Will competition between the wolves increase or decrease?
Competition increases
An arctic fox has thick white fur that keeps it warm and helps it blend into the snow. Is this variation advantageous or disadvantageous?
Advantageous