Past Paper - 27/05 Flashcards
(15 cards)
List the classification groups
KING PENGUINS CARRY ON FAMILY GATHERING S
KINGDOM
PHYLUM
CLASS
ORDER
FAMILY
GENUS
SPECIES
Binomial name refers to which classifications
Genus & Species
What does haemoglobin carry
oxygen
How does an adaptation occur (e.g. varying beak size in a bird)
- mutation
- parents survive / beat out competition
- Then have offspring with this adaptation
- Adaptation continues.
Two types of microorganism that cause decay
fungi
bacteria
What is the product of lipids breaking down
fatty acids
Why does something decay faster in warmer temperatures. TWO
Bacteria divides faster in warmer conditions
Reactions happening faster because there is more kinetic energy
Why is more land being used for farming? THREE How has it decreased biodiversity? THREE
Growing population - more demand
need crops and livestock
- As countries get wealthier - variation of diets/ desires for food.
Need for biofuel
Biodiveristiy:
deforestation - destroyed habitats
pesticides infecting water
Pollution - more CO2
Why might genetically modified foods be a bad thing
Gene may contaminate other species of the food/ cause extinction of traditional type of food
How does auxin work to bend a plant
Auxin travels to shaded part, elongates cells on this part of the plant, causing it to bend.
What do bananas release that causes other fruits to ripen
ethene
Why is DNA described as a polymer
Many (joined) nucleotides or
monomers
Describe the structure of a nucleotide
phosphate
(phosphate attached to a) sugar
(which has 1 of 4) base(s)
(attached to sugar)
(bases) are A, C, G and T
How many nanometers in a meter
a million (to convert nm to m - divide by 1 million)
How can non-coding parts of DNA can affect the expression of genes
(non-coding parts) can switch
genes on / off
