Immune System
Which cells help the body to remember a pathogen / disease so we can fight it fast next time?
memory B cells
What word starting with H is used to describe the process of our body trying to stay at a normal temperature range?
Homeostasis
What are the gaps between neurons called?
Synapses
What are the 3 subatomic particles that make up an atom and what are each of their charges?
proton = positive charge
neutron = no charge
electron = negative charge
Which element has an atomic MASS of 24.3?
Magnesium!
Skin, mucus, enzymes in tears, eyelashes, stomach acid.
Which line of defence do these belong in?
First line of defence
Positive feedback loops bring our body AWAY from homeostasis. What's an example out of:
A) Shivering to bring body temperature back to normal
B) A woman pushing harder in childbirth to get the baby out
B) Childbirth
Childbirth brings the body FAR AWAY from normal to push the baby out!
What type of receptors are found in our skin and can detect changes in the temperature of the environment?
Thermoreceptors
If an atom has 10 electrons and 10 protons, what element is it? (you may use a periodic table)
How can I find the number of neutrons in an atom?
Mass number - atomic number = neutrons
Fever and inflammation helps our body to fight infection. Which line of defence do both of these belong to?
2nd line of defence
What is the role of the excretory system? How is our skin a part of this?
Excretory system role: To get rid of waste from our body. Our skin gets rid of sweat.
What type of receptors found in our eyes detect light?
Photoreceptors
What is the law of conservation of mass?
That mass cannot be created or destroyed in a chemical reaction
If an atom has 10 electrons and 10 protons, what element is it? (you may use a periodic table)
Neon
Remember: atomic number tells us how many protons and electrons in the atom!
When our body puts on a fever, how does this help us to fight an infection?
The body heats up so much and any bacteria inside it will be slowed down and can't reproduce fast anymore.
Explain how the nervous system and muscular system work together (make sure to include any organs)
nervous system includes our brain and neurons which send messages to our muscles to move.
For example when picking up a pen a message from my brain travels down a motor neuron to tell my hand muscles to pick up the pen.
How is a reflex action like moving your hand away from a hot pan DIFFERENT to a voluntary action like kicking a soccer ball?
In reflexes, our brain processes the movement AFTER its happened not before like in voluntary movements.
What are the 3 types of radioactive decay? AND how can one of them be used int he medical field?
Alpha, beta and gamma decay
Gamma rays can be used to treat brain cancers
Which element has 56 protons and 56 electrons?
Barium
Remember: atomic number tells us how many protons and electrons in the atom!
How does the 3rd line of defence help our body to fight infection? Hint: what kind of cells are involved?
3rd line of defence has B and T cells. T cells help kill pathogens and B cells release antibodies that can attack pathogens
What is the difference between negative and positive feedback loops?
Negative feedback loops bring the body closer to homeostasis WHEREAS positive feedback loops bring the body away from homeostasis
What are neurodegenerative diseases? Give an example of one
Neurodegenerative diseases are diseases that cause neurons to slowly become damaged and die.
An example is Motor Neuron Disease which causes issues with movement in the body and can be fatal.
Chlorine-35 and Chlorine-37 are isotopes. What is the definition of isotopes?
atoms that have a different number or neutrons BUT the same number of protons. They are still the same element but just a heavier or lighter version.
Where are the metals found on the periodic table? Give 3 examples of metals.
Metals are found on the left side and in the centre. Examples include: sodium, magnesium and aluminium