A diagram that shows many feeding relationships in an ecosystem
What is a food web
200
The process of movement from high to low concentration
What is diffusion
200
Genes are located in the ______?
What is the chromosomes in the nucleus
200
The process in which sex cells are made for sexual reproduction
What is meiosis
200
A prehistoric organism that many species have evolved from
What is a common ancestor
300
The things in the enviornment that limit the size of populations
What are limiting factors
300
The place where respiration makes ATP.
What is mitochondria
300
What is an alteration in the DNA sequence?
What is a mutation
300
The process in which body cells are made to help restore and repair
What is mitosis
300
The overuse of antibiotics has created a population of bacteria that are resistant to the drug. The bacteria without the resistance die off and the bacteria with the resistance live to reproduce. This is known as..
What is survival of the fittest
400
The number of organisms of any species that an ecosystem can support
What is the carrying capacity
400
The material that drains the fluid from cells
What is salt
400
The expression of genes can be altered by the _______?
What is the enviornment
400
When the gametes join together they form a __________
What is a zygote
400
The final step of natural selection
What is reproduction?
500
Where the most energy is located in the energy pyramid
What is the bottom
500
The place of protein synthesis
What is ribosome
500
What are the three things DNA are made up of?
What is sugar, phosphate, and nitrogenous bases
500
The act of joining a sperm and egg in the fallopian tubes is what?
What is fertilization
500
Mutation and sexual reproduction are sources of this in a species