quiz 6 Flashcards
What do carbohydrases break down and what is produced?
Carbohydrates to simple sugars
What are genes?
Parts of a chromosome that contain the instructions to make one protein
What are the 3 organelles that may be present only in in plant cells?
Cell wall, vacuole and chloroplasts.
To where does blood flow after leaving the right hand side of the heart?
The lungs
What is the function of a phloem cell?
Transport of simple sugars and amino acids around the cell
What are antibodies?
Small proteins that attach to antigens on the outer surface of pathogens
Give two advantages of electron microscopes
Large magnification and resolution
What is mitosis?
The division of one cell to produce two identical clones
Name two key adaptations of capillaries.
they have very thin walls (one cell thick) and are very narrow
Name three ways in which white blood cells help to defend against pathogens.
phagosytosis, antibody production and antitoxin production
Which methods of material transfer do not need energy
Diffusion and osmosis
Give two differences between prokaryotic and eukaryotic cells
Eukaryotic cells have a nucleus and are much bigger
What do we call a solution that is the same concentration as in a cell?
Isotonic
What is the test for glucose (sugar) in food?
Add Benedict’s reagent to a sample or solution of the food, heat to 75 degrees Celsius. Reagent turns from blue to orange/red
What are antitoxins?
Small molecules that attach to toxin chemicals and stop them being dangerous
