Flashcards
B3
Flashcards do conjunto (18)
- 1Cell MembraneControls what enters or leaves the cell
- 2NucleusContains all the DNA and controls all the reactions that happen in the cell
- 3CytoplasmWhere all the reactions take place
- 4Chloroplast (only in plant cells)Where photosynthesis takes place
- 5Vacuole (only in plant cells)The storage of the products made in photosynthesis
- 6Cell Wall (only in plant cells)Keeps the cell structure
- 7MitochondriaSite of respiration
- 8RibosomesSite of protein Synthesis
- 9Functions of the liver- Processes nutrients from food
- Maintains levels of fats, amino acids and glucose in the blood
- Production of cholesterol
- Regulating hormones - 10How does DNA replicate?The DNA unzips so that you have exposed bases. New strands are made by base pairing.
- 11Explain how a change to a section of DNA can change the protein it codes for.It changes the base sequence which causes a change in triplet code causing a chain in an amino acid.
- 12What are proteins are needed for?- Enzymes
- Collagen
- Insulin
- Haemoglobin - 13EnzymesCatalysts that control all the chemical reactions in your cells and digestive tract.
- 14CollagenYour skin, bones, cartilage, tendons, ligaments and walls of blood vessels all contain collagen.
- 15InsulinA protein hormone made in the pancreas that controls blood sugar levels.
- 16Haemoglobin- In your red blood cells and carries oxygen from your lungs to respiring cells
- It is a carrier protein - 17What is made when starch breaks down?Two small product molecules (glucose molecules) and a free enzyme.
- 18Explain the job of iodine.The iodine is an indicator, when starch is present iodine is a dark brown. The iodine looses colour when starch is no longer present.