Scientific Method
What are the 2 format for writing a hypothesis?
If...then...
I think that...
What organelle captures energy from the Sun and uses it to help produce chemical energy?
Chloroplast
Cell division that creates two identical diploid cells.
Mitosis
Father of the theory of natural selection.
Charles Darwin
The number of organisms of any single species that an ecosystem can support is called.....
carrying capacity
How many variables are changed in an experiment?
just ONE
The genetic material of an organism is found in which organelle?
Nucleus
This process produces plants and animals with the most desired traits.
Selective Breeding
The theory that modern species evolved from earlier, different species and share a common ancestor.
Evolution
Provide an example of an abiotic factor
Provide and example of a biotic factor
Abiotic: water, temperature, pH
Biotic: plants, animals, bacteria
The one variable that is changed
independent variable
What does a ribosome do?
Produces proteins
The process by which the genes of one organism are inserted into the genes of another.
Genetic Engineering
Where do the variation in organisms come from?
-Genetic Shuffling
-Fertilization of the egg and sperm
What is the permanent disappearance of a species called?
extinction
The variable that is measured
dependent variable
When you put a cell in a salt solution, it shrinks because
Water leaves the cell. (It goes from high to low concentration)
Where does fertilization occur?
Where does implantation occur?
Fertilization: fallopian tube
Implantation: uterus
Will bacteria or humans evolve quicker, why?
Bacteria because they reproduce very quickly and in high numbers.
The role that each species plays in an ecosystem is called its
niche
You water three sunflower plants with salt water. Each plant receives a different concentration of salt solutions. A fourth plant receives regular water. After a two-week period, the height is measured.
Independent variable: salt concentration
Dependent variable: height
Control group: regular water
A. Chloroplasts are the site of which chemical reaction?
B. What type of cells are they found in?
A. Photosynthesis
B. Plant cells
A. The period from conception to birth is called......
B. What is this length of time in humans?
B. 9 months
Name 3 pieces of evidence in evolution.
-Fossils -Homologous structures
-DNA -Comparative anatomy
-Biochemistry
-Vestigial Structures
The continual input of energy, typically the _________, is required to start the food pyramid and to keep it going.
sun!