If you think about the equation for respiration (C6H12O6 +6 O2 = 6 H2O + 6 CO2) the gases involved are Oxygen and carbon dioxide. This means there will be a slight decrease in oxygen level and slight increase in carbon dioxide level, everything else will remain the same.

You can use props like the classroom for the animal cell. The teacher as the nucleus because a good teacher should be able to control the class like the nucleus controls the cell and what goes on in it. Cytoplasm as the students. The students do the work in the classroom and that what the cytoplasm does. Chemical reactions happen in the cytoplasm so you can compare children working and work goes... more

Plants absorb water from the soil by osmosis. They absorb mineral ions by active transport, against the concentration gradient. Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption. They also contain lots of mitochondria, which release energy from glucose during respiration in order to provide the energy needed for activ... more

Fats need to be broken down into fatty acids and glycerol before entering the bloodstream. Fats are large insoluble molecule and therefore would not be able to pass through the membrane of the gut (where you have the lacteal which inside the villi) neither the bloodstream. Remember the capillaries themselves are one cell thick. Large molecules can not pass into bloodstream. They must be digested.... more

Yes the pulmonary valve. It opens to allow blood to be pumped from the right ventricle to the lungs (through the pulmonary artery), where it will receive oxygen. It's purpose is to prevent the back flow of blood from the pulmonary artery to the right ventricle.

gene mutation and crispr are super interesting and current but are common topics for EPQ! Would recommend another one of your options but make sure to include up to date information and recent developments in the area.

Chemical bonds are like two people who are married. It will take a lot more energy (and money) to break them apart. And if they do break apart, they are never the same. Intermolecular bonds are like people who are dating. They are not really committed to each other and it takes less energy to break them apart, and they are pretty much the same when they break apart and will easily for new bonds.... more

Another term for genetic variation is discontinuous variation. Another term for environment variation is continuous variation

It’s always good to understand the alternative to this question also, passive immunity. Passive immunity is that which is acquired from a different person i.e. an unborn foetus acquired immunity to whooping cough after the mother has the pertussis vaccination at around 28 weeks of pregnancy, and again post birth through breastfeeding. If the mother is exposed to a pathogen her body will make anti... more

Is the process where plants or other photosynthetic organisms make their own food by using light energy.