The specification document on the SQA website provides an overview of the course, so you might find it helpful to use for your last minute revision:
https://www.sqa.org.uk/files_ccc/BiologyCourseSpecN5.pdfAs for those topics, BBC bitesize contains summaries of them:
https://www.bbc.com/education/subjects/zync87hIf you have more specific questions once you've looked at those, then I could try and help answer those, but for a few pointers, I would say:
- Never give an answer of 'respiration'- you must always specify it to be either 'aerobic respiration' or 'fermentation' to gain the mark.
- There is a really good summary table again on BBC bitesize:
https://www.bbc.com/education/guides/zs3jrwx/revision/4- For parts of the hear you really just need to memorise the labelled diagram- remember in the diagram, right becomes left and left becomes right. The atria are at the top, and the ventricles are at the bottom (I remember this as A is before V in the alphabet). Valves prevent the backflow of blood. You also just need to memorise the path the blood takes in the body- choose one point to start at when you are memorising, but be aware there is no real start or end, so the exam question could ask you to start at any point.
- Xylem: Dead, hollow, transport water and minerals. Upwards movement. Lignin provide structural support, allowing xylem to withstand pressure changes. Know about the route and importance of the transport of water.
- Phloem: Living, transport sugar to meristems. Know about companion cells and sieve cells and be able to identify on a diagram.
- Mitosis- this really just needs to be memorised, but some key words that you should know the definitions of should help you: haploid, diploid, chromosome complement, daughter cells, replication, chromatids, centromere, spindle fibres, cell equator, cell poles, nuclear membrane. Make sure you are aware that the daughter cells are genetically identical to each other and the original parent cell- it maintains the chromosome complement, ensuring the daughter cells have all the genetic information required to carry out cell functions.
Hopefully this helps a bit. Make sure you get some rest tonight and just do your best in the exam tomorrow