unit 1
What's the first level of a trophic phase?
Producers.
Why is the food chain important?
Food chains are important because they show the intricate relationships in ecosystems.
What is a mitochondria?
The powerhouse of the cell.
What is mitosis?
type of cell division that results in two daughter cells.
A cell has a single line of chromosomes. What is the phase?
Metaphase
What's the last level of a trophic phase?
Tertiary consumer.
What is mutualism?
Mutualism describes the relationship between two organisms that benefit from each other.
What are the three parts of nucleotide?
nitrogenous base, a pentose sugar, and a phosphate.
What are the five phases of mitosis?
prophase, prometaphase, metaphase, anaphase, and telophase.
In which phase does a new nuclear membrane develop?
Telophase
What's the difference between a food web and a food chain?
A food chain is a singular path of energy while a food web shows how different animals are interconnected in an ecosystem.
What is a producer?
An organism that creates their own food/energy.
What is the process of photosynthesis?
cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen
During which phase is the DNA duplicated?
During the M phase
During which three phases are individual chromosomes no longer visible?
Telophase, cytokinesis, interphase.
What is the meaning of a carrying capacity?
The limit of an environment.
What is parasitism?
Parasitism describes a relationship between two organisms where one benefits but the other is harmed.
What's the difference between a eukaryotic and prokaryotic cell?
Eukaryotic cells contain a nucleus and prokaryotic cells don't.
In which phase are chromatids pulled apart?
Anaphase
What is the role of the centrioles?
Centrioles produce spindle fibers and help to organize the movements of chromosomes.
What factors would increase the carrying capacity of an herbivore population?
Food ability, water, and space.
What is a consumer?
A consumer is an organism that gains energy from other producers, consumers, or both.
What's the formula for photosynthesis?
The formula for photosynthesis is 6CO2 + 6H2O —> C6H12O6 + 6O2
Why is mitosis important?
Mitosis is important because it provides new cells for growth and for replacement of worn-out cells.
What do cells need to do between divisions to make sure that they don’t just get smaller and smaller?
They need to grow before replicating.