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final study
n/a
63
Biology
9th Grade
12/16/2013

Additional Biology Flashcards

 


 

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Term

Genotype

Definition
  • The actual gene combination
Term
Phenotype
Definition
  • The trait that the individual actually shows
Term
Alleles
Definition
  • a gene that codes for trait
Term
Dominant
Definition
  • represented by upper case letter (B), Always shows- preventing the other allele from showing
Term
Recessive
Definition
  • Represented by lower case letter (b). Hidden by the dominant allele-- doesnt show if its present. There must be 2 recessive alleles for it to show.
Term
Heterozygous
Definition
  • When the alleles in a pair are diffrent from eachother-- one dominant and one recessive (Think hetero= diffrent). Also known as hybrid.
Term
Homozygous
Definition
  • When both alleles in a gene pair are the same (think homo= same) Also known as "pure" or "purebred".
Term
Independent assortment
Definition
  • Homologous chromosomes/genes (and therefor the traits) seperate into gametes randomly and independently for eachother.
Term
Two striped cats produced a litter with four cubs. three of the cubs are striped and one is solid black, The black coat is probably what type of trait ?
Definition
  • Recessive
Term
A parent who has blood type O, is crossed with a parent who has blood type AB. Can they possibly have a child with AB blood?
Definition
  • NO
Term
Blood type is an example of what type of dominance?
Definition
  • Co-Dominance
Term
Scientist - Hooke, Known for?
Definition
  • First to see cells in cork
Term
Scientist- Leeuwenhoek, known for?
Definition
  • First saw living microorganisms in pond water using a microscope in 1674
Term
Name the 4 most abundant elements found in living cells-
Definition
  • carbon
  • oxygen
  • hydrogen
  • nitrogen
Term
Explain pasteur's expiriment
Definition
  • He disproved spontaneous generation
Term
What is spontaneous generation?
Definition
Life arising from nonlife
Term
List the characteristics of living things
Definition
  1. made of cells
  2. reproduce
  3. universal genetic code (DNA)
  4. grow and develop
  5. obtain and use materials and energy
  6. respond to their enviroment
  7. maintain homeostasis
Term
Carbohydrates
Definition
  1. Sugars, starches, cellulose, glycosen
  2. Main source of energy for living organisms
  3. C, H, O 
Term
Lipids
Definition
  1. fat, oils, waxes, phospholipids, steroids
  2. energy storage for living organisms
  3. C, H, O 
Term
Proteins
Definition
  1. enzymes, antibodies, hemoglobin
  2. builds muscle and provides structure controls, chemical reactions, regulate cell processes
  3. C,H,O,N 
Term

Nucleic Acids

Definition
  1. Dna , Rna
  2. Stores genetic information 
Term
Prokaryotic
Definition
  • Smaller in size
  • simple, has no organelles
  • Does not have a nucleus. Dna is one big circle that floats in cell
  • Unicellular (single cells)
  • EX: bacteria
Term
Eukaryotic
Definition
  • Larger in size
  • Complex, has many organelles
  • Has a nucleus; Dna is in the nucleus
  • Unicellular or multicellular
  • EX: animals, plants, amoeba
Term
List the principles of cell theory
Definition
  • all living things are made up of cells
  • cells are the smallest most basic unit of structure and function in living things
  • cells come from existing cells 
Term
Nucleus
Definition
  • control center of the cell
Term
Chloroplast
Definition
  • In plant cells only; where photosynthesis takes place 
Term
Mitochondria
Definition
  • Powerhouse of the cells; makes ATP 
Term
Ribosome
Definition
  • Makes protein 
Term

Cell Membrane

 

Definition
  • Thick layer around the cell; maintains homeostasis 
Term

What is an enzyme?

What is activation energy?

Definition
  • An enzyme works in speeding up a chemical reaction
  • Activation energy is the energy required for the chemical reaction to occur 
Term
What helps enzymes work better?
Definition
  • optimal tempatures and PH 
Term
Diffusion
Definition
  • Facilitated Diffusion: diffusion of particles through the protein channels in a membrane from high concentration to low concentration 
Term
Active Transport
Definition
  • movement of particles against a concentration diffrence from a low concentration to a high concentration 
Term
Hypertonic Solution
Definition
  • Equal concentration of ions in solution and cells 
Term
Hypotonic Solution
Definition
  • Lower concentration of ions in solution than in cell 
Term
Isotonic Solution
Definition
  • Equal concentration of ions in solution than in cell 
Term
Are viruses considered living or non-living?
Definition
Non living
Term
[image]
Definition
Photosynthesis equation
Term

6 O2 + C6H12O6 ------> 36 ATP  + CO2 + H2O


   oxygen- glucose-         energy- carbon dioxide- water

Definition
CELLULAR RESPIRATION
Term
Describe how photosyntesis and cellular respiration are interrelated?
Definition
They are opposites- the products of one are the reactants of another
Term
Define cell cycle-
Definition
The time between the birth and death of a cell
Term
[image]
Definition
3 PARTS OF A NUCLEOTIDE
Term
Put the following things in order from the largerts to smallest in size (nucleus, DNA, chromosomes, nucleotide, cell)
Definition
cell, nucleus, DNA, chromosomes, nucleotide
Term
What does the sequence of nucleotide bases in DNA mean?
Definition
  • Determines the genetic information stored in DNA
  • Determines the sequence of amino acids in protein
  • Carried from the nucleus to the ribosomes by molecules of mRNA 
Term
Adenine matches up with Thymine.
Definition
Cytosine matches up with Guanine.
Term

Match the original strand of DNA with its complimentary strand

a. 5' A C A T G C 3'

 

Definition
b. 3' T G T A C G 5'
Term
[image]
Definition
PROTEIN SYNTHESIS
Term
In transcription, DNA is converted into mRNA.
Definition
In translation, mRNA is converted into amino acids (proteins)
Term
List and explain the steps in cell cycle
Definition
  • Interphase
  • G1 - cell growth
  • S - DNA replication
  • G2 - cell growth
  • M phase
  • Mitosis ( see below)
  • Prophase
Term
[image]
Definition
PARTS OF CELL CYCLE
Term
[image]
Definition
FOUR PHASES OF MITOSIS
Term
If a human cell with 46 chromosomes goes through a normal mitotic cell division, how many chromosomes are found in the daughther cell ?
Definition
46 chromosomes
Term
Why do offspring produced by sexual reproduction often look similar to but not exactly the same as, their parents?
Definition
the offspring have genetic material from both the mother and father
Term
A change in a DNA molecule changes ________ ?
Definition
The protein coded for.
Term
point mutation -
Definition
mutation that occurs at a single gene
Term
Frame shift mutation-
Definition
the addition or deletion of a gene
Term
Chromosomal mutation-
Definition
effects the entire chromosome
Term
[image]
Definition
duplication, deletion, inversion, translocation
Term
How do cancer cells form?
Definition
when there is uncontrolled cell growth; cells are not communicating with cells around them
Term
what is karyotype ?
Definition
a photograph of person's chromosomes.
Term
what can a doctor see in karyotype?
Definition

chromosomal abnormalities; extra chromosomes

 

Term
why is genetic testing done?
Definition
retesting the babys father, a criminals identity, a genetic disorder
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