Show:
Maintaining a Balance
Blueprint of Life
Search for Better Health
1st Hand Investigations
Important Contributions made by individuals to Biology
100
Enzymes and Homestasis, Internal Transport Systems and Excretion and Water Balance
What is the 3 sub topics of Maintaining a Balance topic
100
Examples of Reproductive Technologies
What is Fertility treatment, Surrogacy, IVF, cloning
100
prions, viruses, bacteria, protozoa, macroparasites
What is types of pathogens
100
explanation of how you investigated microbes in air and water
What is a sterile petri dish is prepared with nutrient medium and antiseptic techniques are used to innoculate with food and water sample. Dish is incubated at 30 degrees Celsius then microbial growth is observed
100
The Father of Genetics
What is Gregor Mendel
200
active site is occupied by substrate and reaction is catalysed
What is enzyme-substrate complex
200
DNA from a somatic udder cell of a donor sheep is inserted into a female ovum whose nucleus has been removed to accomodate donors insertion. Electricity is applied to initiate cellular division with complete donor diploid genetic makeup. Developing embryo is implanted into surrogate mother who gestates clone.
What is somatic cell nuclear transfer- the method employed for the creation of Dolly the sheep.
200
a sterile petri dish is prepared with nutrient medium and antiseptic techniques are used to innoculate with food and water sample. Dish is incubated at 30 degrees Celsius then microbial growth is observed
What is first hand investigation of microbes in food and water.
200
explain how using the simple equipment in these labs, the size of a red blood cell can be derived
What is a grid is viewed at low power to achieve the FOV of 1.4 mm across. These units are multiplied by 1000 so that the more appropriate micrometre scale can be applied ie 1400 micrometre FOV is divided by four as high power has four times the magnifying power at 400x compared with 100x but 1/4 the field of view. 1400/4 = 350 micrometres FOV. Number of RBC estimated to line up along length 350/60= 7-8 micro metres
200
Watson and Crick are responsible for this
What is Discovering the molecular structure od DNA molecule
300
allows reactions to take place more quickly without being used up in the process
What is a catalyst. eg catalase
300
crossing over, random segregation and independent assortment (haploid into gamete) each gamete can inherit either the paternal or maternal chromosome during meiosis. The possibility of different gametes fusing also increases this.
What is chromosome behaviour that leads to genetic variation
300
direct contact of bodily fluids air, water or a vector are all types of..
What is methods of transmission
300
Explanation of independent/dependent and controlled variables in enzyme investigation
What is 3 independent variables in 3 seperate investigations- controlled variables are equal excluding independent- ie temp, conc and pH kept constant throughout. Dependent variable is the reaction rate of the enzyme-substrate which is observed by measuring height of bubbles produced. Enzyme used is catalase. Substrate is Hydrogen Peroxide
300
The work of Beadle and Tatum
What is changing the one-gene one protein theory to one gene one polypeptide. Bread mould is exposed to radiation so that the are deficient in certain enzymes...
400
the chemical equation for the breakdown of Hydrogen Peroxide in the liver
What is H202+catalase= H20 + O
400
hybridisation practice in animal and plant breeding allowing selected individuals to breed back into the population to avoid inbreeding undesirable traits and increasing the frequency of heterozygous alleles.
What is hybrid vigour
400
responsible for formulating the clonal selection theory
What is Sir Macfarlane Burnet (1899-1985)
400
Explanation of how to Model Natural selection
What is use colour, ability to grasp or taste of lollies on different colour background- similar to Peppered moth example eg time another person in picking up green tooth picks in grass then again on wooden floorboards or lollies that are taken first because their taste is more appealing
400
Founders of the study of Microbiology
What is Louis Pasteur and Robert Koch
500
Basic internal conditions that need to be maintained at a homestatic levels in Endotherms through negative feedback mechanism and internal receptors
What are water balance, pH, temperature, substrate concentrations, concentration of gases and glucose in the blood
500
3:1 ratio in cross bred heterozygous F1 generation
What is Mendelian Ratio of Dominance
500
4 types of T cells
What is Helper, Cytotoxic, Memory, and Suppressor
500
Explanation of how to prepare a longitudinal and transverse section of xylem and phloem
What is observing safety considerations of sharp knives and chemical stains, describe how both types of section would be made to fit on a slide and correctly observed and drawn with a scale.
500
Discoverer of Penicillin
What is Howard Florey