The Cell-ebtrity Apprentice
What is the shape of a DNA molecule?
Double Helix
D/N
What will be used for separating a mixture or sand and water.
Filtration.
Which process describes the change from a solid to a liquid?
Melting
What process happens when water vapour in the air forms clouds?
Condensation.
WHEEL
What is the relative charge of each subatomic particle?
P = +1
N = 0
E = -1
Describe how the base pairs are bonded together in a DNA molecule.
A-T, C-G by Hydrogen Bonds
WHEEL
State the reason why chlorine is added during the water treatment.
Kill Bacteria
D/N
Describe the particles in a solid.
- Regular arrangement
- Fixed Position
- Vibrate
WHEEL
Define the terms - Abiotic and Biotic
Abiotic - Non-living components
Biotic - Living components
Define 'group' and 'period' in the periodic table.
Group - Vertical Column
Period - Horizontal row
D/N
What is the structure of the Cell Wall?
Provide structure and support
Define 'Pure water'
Water that only has H2O molecules present.
How can you calculate the volume of a rock?
Place it in a eureka can, measure how much water spills out.
WHEEL
Describe how to determine the number of flowers in a field.
- Use a quadrat
- Use random coordinates
- count the number in each quadrat and use the formula
An atom of aluminium has an atomic mass of 27. Aluminium has an atomic number of 13. State the number of electrons, neutrons and protons in this atom.
P = 13
N = 14
E = 13
Complete the complimentary DNA strand.
T G C A A C G C T T A G A
A C G T T G C G A A T C A
During water treatment, the solids in river water are removed by...
Filtration
D/N
Which equation should you use to calculate the density of a liquid?
density = mass / volume
How does reforestation (planting new forests) help maintain biodiversity?
It provides new habitats and food sources for a wide range of different species
D/N
Describe two differences between Mendeleev's periodic table and the modern periodic table.
- Gaps / incomplete
- fewer elements / not all elements
- Ordered by atomic mass not atomic number
- some elements in different positions
WHEEL
State three steps in extracting DNA from fruit.
DNA can be extracted by crushing up fruit with salt/ detergent and pouring the mixture into (ice-cold) ethanol. DNA appears as a precipitate.
Describe how sedimentation is carried out.
Water is left to settle
Dirt/ particles fall to the bottom
What three measurements are needed to calculate the specific heat capacity of water?
Mass of Water
Energy supplied to Water
Change in Temperature of Water
Name the 4 main parts in the Carbon Cycle.
Respiration
Photosynthesis
Combustion
Feeding / Eating
D/N
Outline the term 'Isotope'
Atoms that have the same number of protons and electrons but a different number of neutrons.