unit 1
Which practices add to scientific knowledge. only need one
inferring, predicting, drawing conclusions
describe the relationship between tissues and organs?
Different types of tissues come together to form organs.
define gene
a section of DNA that affects traits
Which organisms rely on overproduction? Two answers
mosquitoes, whose many larvae get eaten by fish
sea turtles, whose numerous young must rush to the sea
define learned behavior
an activity or behavior that is acquired by an organism through experience
define the term scientific theory
an explanation for observable phenomena
describe the structure of mitochondria?
Mitochondria have an outer membrane and a folded inner membrane.
If being tall is dominant in pea plants, which generations will have short plants?
The first generation will have no short plants. The short trait will return in the second generation
describe the connection between the theory of evolution and Darwin’s journey
Darwin made many observations during his voyage. He concluded that organisms evolve over long periods of time and have common ancestors.
define innate behavior
an activity or behavior that occurs naturally in an organism
describe a similarity between scientific laws and scientific theories?
Both can change in light of new evidence.
describe the structure of the nucleus
The nucleus has a double membrane with holes that allow some molecules to pass through.
How many alleles do genes have and where?
Genes usually consist of two alleles. Each allele is located on a different chromosome.
describe Lamarck’s work
Lamarck hypothesized that an organism's traits changed based on what the organism did or needed. The improved trait was then passed on to its offspring.
Physical traits that increase an organism’s fitness are called
physical adaptations