Genes
Where are genes found in a cell?
The nucleus.
- Acid, Alkali, and Neutral
Acid: pH 0-6, Red - yellow - orange
Alkali: pH 8-14, Blue - Purple
Neutral: pH 7, Green
What type of wave is a sound wave?
Longitudinal
Define the term - producer.
An organism that produces its own food. It usually starts a food chain/web.
What is the symbol for water?
H2O
Double points: What is the gestation period?
Gestation = How long a pregnancy lasts. (Humans = 9 months)
What is a disadvantage of using red/blue litmus paper as an indicator?
Doesn't show a wide range of pH's.
The number of waves you can see
Why do seeds need to be dispersed from their parent plant?
Who discovered gravity after an apple supposedly fell on his head?
Sir Isaac Newton
Explain the difference between inherited and environmental characteristics.
Inherited - Characteristics/genes passed on from the parents.
Environmental - Characteristics that can be effected/changed by the environment/surroundings.
What is the general equation for metal oxidation reaction?
Metal + Oxygen --> Metal oxide
What is the law of reflection and the law of refraction?
Reflection = Angle of incidence = Angle of reflection
Refraction = light will always refract as it enters different densities.
What are the 4 types of seed dispersal?
Wind, animals carry seeds, Animals swallow and excrete seeds, explosive pods.
DOUBLE POINTS: How many continents are there on earth?
7.
Europe Australasia South America
Asia Antarctica
Africa North America
What are the 3 main stages of the menstrual cycle?
What is the general equation for a metal + acid reaction?
Metal + Acid --> Salt + Hydrogen
DOUBLE POINTS: Define the two types of waves.
Longitudinal: Particles vibrate parallel to the direction of the wave, transferring energy not matter
Transverse: Particles vibrate perpendicular to the direction of the wave, transferring energy not matter.
Describe and Explain Bioaccumulation.
The accumulation (collection) of toxic chemicals down a food web/chain. Tertiary consumers will accumulate the most chemicals.
Who painted the mona lisa?
Leonardo Da Vinci
Vincent Van Gogh
Pablo Picasso
Leonardo Da Vinci
DOUBLE POINTS: Explain how natural selection leads to evolution (must get all points in the correct order).
1. Variation amongst a population occurs (mutation).
2. The more suitable/adapted variation out competes less adapted. (natural selection)
3. Less adapted variation dies out, allowing adapted variation to reproduce and pass on their genes.
4. Over generations, the adapted variation increase in population = evolution of the species.
What is the general equation for a neutralisation reaction?
Acid + Alkali --> Salt + Water
Where are light rays focused in short-sightedness and long-sightedness in comparison to normal vision and state how they can be fixed.
Normal vision: Light rays are focused directly onto the retina
Short sightedness: Light rays are focused Infront of the retina (fixed by concave lenses)
Far sightedness: Light rays are focused behind the retina (fixed by convex lenses)
Describe in detail, how seeds and fruits are formed?
- Pollinators transfer pollen (Anther --> Stigma)
- Travels down style and into the ovary
- Ovules are fertilised by pollen grain
- Fertilisation, ovule = seed, ovary = fruit.
Who was the first person to walk on the moon?
Neil Armstrong