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Life Science 7 Final Exam
Fichas del conjunto (50)
- 1How do you write a question for the scientific method?How does _(IV)_ affect _(DV)_?
- 2How do you write a hypothesis?If _______ then _______ because ____.
If this happens, then that happens, because of reason. - 3independent variablethe variable that is changed in the experiment
- 4dependent variablevariable that responds to the change made to the independent variable
- 5controlled variablevariables that remain constant in the experiment; not be a fair test if two variables are changing at the same time
- 6controlthe normal or standard to compare other things to
- 7constantsthe variables that do not change
- 8metric systemthe decimal measuring system based on the meter, liter, or gram as units
- 9cell membranea layer of tissue that surrounds the cell
lets good chemicals in and keeps bad chemicals out - 10cytoplasmjelly-like substance within the plasma membrane
- 11endoplasmic reticulum ERpassageways where proteins and chemicals are made; smooth ER carries the proteins to parts of the cell; rough ER makes the protiens
- 12Golgi Bodystack of membranes that package chemicals
- 13Nucleuscontrols the activity of the cell; and houses the DNA
- 14nucleolusmakes ribosomes
- 15cell wallprovides protection and support for plant cells
and allows water, oxygen, and carbon dioxide to move into and out of a cell - 16chloroplastsmakes food for plant cells during photosynthesis
- 17vacuolesstores and transports food, water, and waste in animal cells
single large one in the plant cell and stores large amounts of food - 18Mitochondriabreaks down sugar molecules to release energy; where cellular respiration occurs
- 19ribosomessynthesize protiens
- 20centriolesthis organelle separates chromosome pairs during mitosis
- 21cell theory (1)Cells are the basic unit of structure and function in all living things
- 22cell theory (2)All living things are made of cells
- 23cell theory (3)All cells come from existing cells
- 24microscope parts1. body tube
2. rotating nose-piece
3. medium power objective lens
4. low-power objective lens
5. high power objective lens
6. stage clips
7. diaphragm
8. mirror
9. eyepiece
10. arm
11. stage
12. coarse adjustment knob
13. fine adjustment knon
14. base - 25chromosomescontain genes and DNA
- 26sister chromatidsone strand of a chromosome
- 27chromatinthe spaghetti like substance that form into chromosomes during mitosis
- 28genesbasic unit of heredity
- 29traitsa quality or characteristic of an individual
- 30Mitosiscell division
- 31prophasethe nuclear membrane and nucleolus disappear; centrioles begin to move to opposite ends of the cell; spindle fibers form between the poles
- 32metaphaseChromatids attach to the spindle fibers and move to the middle of the cell
- 33anaphasesister chromatids separate and begin to move to opposite ends of the cell
- 34telophasecell is pinched in the middle
chromosomes appear as chromatin (threads)
mitosis ends - 35Haploid cella cell having a single set of unpaired chromosomes.
- 36Diploid cella cell containing two complete sets of chromosomes, one from each parent
- 37DNADeoxyribonucleic acid
contains the instructions for making proteins within the cell
located in the nucleus of the cell - 38nucleotide partsDeoxyribose
Phosphate
nitrogenous bases - 39alleledifferent form of a gene
- 40Gregor Mendeldiscovered that factors/alleles are dominant or recessive; discovered that one allele from mom and dad was randomly chosen
- 41Hybrid vs. Purebreda combo of 2 different alleles
a combo of 2 of the same alleles - 42Dominanta trait that overpowers a recessive trait and will appear in the phenotype of the offspring if 1 parent contributes to it
- 43Recessivea trait that is overpowered in the presence of a dominant allele
must pair with a recessive allele in order to be seen - 44Homozygousan allele combination using 2 of the same alleles
- 45Heterozygousan allele combination with 2 different alleles
- 46genotypethe genetic makeup of an organism
- 47phenotypethe physical appearance of an organism
- 48Punnett Squarea diagram that shows the probability of 2 parents offspring genotype
- 49F1 Generationthe first offspring generation
- 50Incomplete dominancea type of dominance where the heterozygous condition produces a brand new phenotype
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- 7th Grade Science Fichas sobre Life Science 7 Final Exam, creado por pcsalazar el 25/05/2014.
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