Cells
Mycoplasma gallicepticum
how old is earth?
4.543 billion years
What are the 3 parts of an atom?
Proton, neutron and electron
What is the chemical symbol for Hydrochloric acid
HCL
What is the genetic material called in the nucleus
sperm
What material allows for electricity to flow through easily
Conductor
What is the trend of reaction in the Group 1 elements as you go down?
It increases
How many chromosomes are in a human body cell
46 (23 pairs)
six to twelve inches
384,400 km
What is current?
Current is a measure of how much electric charge flows through a circuit
What ion does Group 7 become when it has reacted
-1
What is the reason why egg and sperm cells have half the amount of the chromosomes of a body cell
Because when a egg and sperm cell fuse to create fertilised cell, it has 46 chromosomes in total
200 different types
What is the difference between a series and a parallel circuit
A series circuit has one loop a parallel circuits have more than one loop
What is the equation for a neutralisation reaction
Acid + base --> Salt + water
What is the difference between genetic and environmental characteristics? give one example of each
Genetic characteristics are the characteristics that you inherit from your parents, for example eye colour environmental characteristics are the characteristics that is affected by the environment for example accent
Blueberries are blue, carrots are orange, most plants are green, mustard is yellow, the cells of our retina are black, eggplants are purple
1.3 million Earths
What is the equation that links current and potential difference
What is the conservation of mass
Matter cannot be created or destroyed. The mass of the reactants equals the mass of products
Explain briefly how two parents with brown eyes can have an offspring with green eyes
Both parents are carrier of the gene that codes for green eyes and past that gene onto their child
or
Genetic mutation