CH 1
What is the smallest and basic unit of life?
The cell
What comes between Family and species in taxonomy?
Family->_________-> Species
genus
What is the definition of matter
anything with mass and that takes up space
what 2 elements must an atom have to be organic
carbon and hydrogen
What is the difference between prokaryotes and eukaryotes
eukaryotes have a nucleus, prokaryotes dont
What is a population?
A group of the same species in an area
A tentative explanation for a natural event
Hypothesis
what pH is considered neutral
7
the storage form of glucose in plants is
starch
what structure makes proteins
ribosomes
What are the 3 domains of life?
Bacteria, Archaea, Eukarya
Bob is doing an experiment to see if the amount of water plants get effects how fast they grow. What is the experimental (dependent) variable in his experiment?
Amount of water
what is an isotope
atoms of the same element with different atomic masses, number of neutrons
Is this molecule saturated or unsaturated?
unsaturated
what is the relationship between a cells volume and surface area
a cells volume increases faster than its surface area
What is natural selection?
different reproductive success of adapted individuals
the total number and relative abundance of species, the variability of their genes, and the different ecosystems in which they live
biodiversity
the ability of water to stick to itself
what type of reaction uses water to break down chemical bonds
hydrolysis
what do we call a spherical shaped prokaryote
coccus
Name 3 of the characteristics of life
Life is organized
Requires energy and materials
has the ability to reproduce and develop
responds to its environment
can maintain an internal environment
has the capacity to adapt
mice and fruit flies are often used in experiments because they are considered
model organisms
what type of bond forms when opposite charges of different molecules are attracted to each other
hydrogen
what kind of bond holds the primary structure of a protein together?
peptide bonds
what is the name of the structure used by bacteria to pass DNA from one to another