What is the purpose of mitosis?
To repair damage and to make more cells grow.
Mitosis:
Method of Eukaryotic cell division and results in two daughter cells that are genetically identical to the parent cell.
How many times does the cell divide during Mitosis?
Only once.
What kind of cells are produced at the end of mitosis?
2 identical daughter cells
Meiosis:
Involves two cell divisions and produces four cells... Occurs in Sexual Reproduction
How many times does the cell divide during meiosis?
2 times
What kind of cells are produced at the end of mitosis?
4 identical new cells
What cells of the human body are made through the process of meiosis?
gametes (sperm and egg)
gamete
the male or female reproductive cell that contains half the genetic material of the organism (example: sperm or egg)
Meiosis
A form of cell division that allows offspring to have half of chromosomes as their parent.
Chromosomes
cell structures that carry the genetic material that is copied and passed from generation to generation of cells
Process of cell division that produce reproductive cells (sperm and egg)
meiosis
Bacteria use which cell division process?
mitosis
mitosis
meiosis
asexual reproduction
all genes come from same parent
sexual reproduction
a single specialized cell from a female merges with a specialized cell from a male.
budding
type of asexual reproduction in which a cell or group of cells pinch off from the parent to form a new individual.
gametes
reproductive cells containing half the number of chromosomes as a parent's body cell
Fertilization
type of sexual reproduction where there is a fusion of male (sperm) and female (egg) sex cells.
Genetics
__________________ explains why you have inherited certain traits from your parents.
gene
A segment of DNA on a chromosome that codes for a specific trait
Chromosomes
cell structures that carry the genetic material that is copied and passed from generation to generation of cells
Traits
characteristics of families that have been passed from generation to generation
dominant trait
an observable trait of an organism that masks (hides) the recessive form of a trait.
recessive trait
trait of an organism can be masked (hidden) by the dominant form of a trait.
Phenotype
The way an organism looks and behaves
Genotype
The gene combination of an organism
cell
basic structural and functional unit of living organisms
tissue
large mass of similar cells that make up a part of an organism and perform a specific function
organ
large mass of similar tissue that make up a part of an organism that performs a specific function
organ system
composed of several organs working together to perform a specific function
organism
an individual form of life that is capable of growing, metabolizing nutrients, and usually reproducing (organ systems working together)
cirrus clouds
wispy, feathery clouds; cirrus means "curl of hair"; form at high levels of troposphere where the temperature is very low, so they are made out of ice crystals
cumulus clouds
clouds that look like fluffy, rounded piles of cotton; cumulus means "heap"; form only about 2 km (low level) above the surface of Earth; indicate fair, sunny skies; neutral clouds
stratus clouds
clouds that form in flat layers; strato means "spread out"; can form low or high, but typically cover most of sky; uniform dull, gray color; produce drizzle, rain, or snow
nimbus clouds
means "rain"; cumulonimbus clouds form when cumulus clouds have vertical development and become towering clouds with flat tops that produce thunderstorms
floods
occur when the volume of water in a river increases so much that the river overflows its channel
thermometer
an instrument used to measure air temperature in units of ? or ?
barometer
an instrument used to measure air pressure in units of inches mercury or millibars
anemometer
an instrument used to measure wind speed in m/s or miles per hour
Weather forecasting
an attempt to make accurate predictions of future weather.
Weather systems generally move from _________ to ________ across the USA.
west to east
cold front
The leading edge of a cooler air mass of air, replacing at ground level a warmer mass of air. The cooler, denser air wedges under the less-dense warmer air, lifting it. The upward motion causes lowered pressure along the cold front and can cause the forma
Cold front on weather map
The surface position of the cold front is marked with the symbol of a blue line of triangles/spike pointing in the direction it is traveling.
high
Cold fronts are usually associated with an area of ___________ pressure.
warm front
The leading edge of a warm air mass that displaces colder air, bringing a temperature increase and heavy rain where the front makes contact with the ground.
Warm front on a weather map
On a colored weather map, a warm front is drawn with a solid red line.