Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
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
-osmosis -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:
|
-temperature
-pH -[] enzyme -[] substrate -inhibitors |
|
|
Characteristics of an enzyme:
|
-very specific
-biological catalysts -proteins -easy to denature ( by temp, pH and inhibitors) |
|
|
E + S -> ES -> P + E
|
Enzyme+Substrate->Enzyme Substrate complex -> Enzyme + Product.
Sucrose+Sucrose->ES->sucrose+fructose+glucose |
|
|
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.)
|
|
|
Virus
|
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) |
|
|
Capsid
|
protein coat
|
