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16 Cards in this Set

  • Front
  • Back
3 parts of a nucleotide
five carbon sugar & nitrogenous base & phosphate group
Differences between DNA and RNA
DNA: thymine, deoxyribose, double helix
RNA: uracil, ribose, single strand
Nitrogenous bases that bond across the DNA strands
(A)adenine -> (T)thymine
(C)cytosine ->(G)guanine
Difference between prokaryotic and eukaryotic cells
prokaryotic: bacteria, archaea (lack nucleus, smaller)
eukaryotic: fungi, protists, plants, animals
Transport mechanisms where ATP is required:
active transport, exocytosis, endocytosis, pinocytosis, phagocytosis & receptor mediated endocytosis.
3 types of passive transport:
-simple diffusion
-facilitative diffusion
Differences between plant and animal cells:
Plant cells have a cell wall, chloroplast and central vacuole.
Animal cells DON'T.
Factors that affect the rate of enzyme activity:
-[] enzyme
-[] substrate
Characteristics of an enzyme:
-very specific
-biological catalysts
-easy to denature ( by temp, pH and inhibitors)
E + S -> ES -> P + E
Enzyme+Substrate->Enzyme Substrate complex -> Enzyme + Product.

In the Enzyme LAB
Inorganic Catalysts: iron from the rusty nail
Organic Catalysts: Catalase
7 parameters that are regulated by homeostatic mechanisms:
oxygen, glucose, water, salt, pH, temperature, blood pressure
HIV is a retrovirus b/c:
it is an RNA virus that reproduces by means of DNA molecule. ( they reverse DNA -> RNA flow of genetic info.)
not cellular, consist of RNA & DNA (never both), capsid coating, cannot carry metabolic activities, only reproduce w/ living cells, grouped in: size & shape etc...
DNA replication
1/ unwinding and unzipping- H bonds between base pairs are broken(helicase).
2/ NEW Complimentary base pairing( DNA polymerase)
3/ Joining the complimentary nucleotides join to form a new strand (DNA polymerase)
protein coat