Cells & Organization
Which organelle controls all cell activities?
The Nucleus
Which system breaks down food?
Digestive System
Where are genes found?
Chromosomes
What is the main energy source for ecosystems?
The Sun
What type of relationship is pollination (bees & flowers)?
Mutualism
Which organelle is the “powerhouse of the cell”?
The Mitochondria
What is the main job of the circulatory system?
Transports oxygen and nutrients
What is a heterozygous genotype? Give an example!
Two different alleles (letters)
ex: Bb
What do decomposers do?
Break down dead organisms and return nutrients back into the soil
What is an adaptation?
A trait that helps an organism survive
Which organelle makes proteins?
Ribosomes
Which system exchanges oxygen and carbon dioxide?
Respiratory System
What do Punnett Squares show?
Possible offspring genotypes
Why is a food web more accurate than a food chain?
Shows multiple energy pathways
How are organisms best grouped in classification?
By similar characteristics
Which two structures are ONLY found in plant cells?
Chloroplasts & Cell Walls
How do digestive and circulatory systems work together?
Digestive absorbs nutrients; circulatory transports them
If blue eyes are recessive (b), what genotype gives blue eyes?
bb
What happens if an bug eating animal is removed from a food web?
The bug population increases
Which kingdom lives in extreme environments?
Archaea
List the levels of organization from least to most complex: _____ → _____→ _____→ _____→ _____
Cell → Tissue→ Organ → Organ System → Organism
What is homeostasis?
Maintaining balance in the body
What determines phenotype?
(Hint: two things)
Genotype and environment
If frogs are removed from a food web, describe how at least two other populations would be affected and explain how this would disrupt the balance of the ecosystem.
If frogs are removed from a food web, insect populations would likely increase because there are fewer predators to keep them under control. At the same time, animals that eat frogs, such as snakes and certain birds, would decrease because they lose an important food source, which would disrupt the balance of the ecosystem.
What helps organisms avoid predators? (Hint: two things)
Camouflage and Mimicry