Childress magnification QS Flashcards
why is resolution so low on optical microscopes
resolution is so low because wavelength of light is too long
what is the role of lysosomes in digesting pathogens
lysosomes fuse with vesicle (phagosome) and releases hydrolytic enzymes/ lysozymes
do viruses have a cell surface membrane and cytoplasm
no
describe how a temporary mount is made
-obtain a thin slice
-put on slide in water/solution/stain
-add a cover slip
give features of starch and why it makes it a good storage molecule
Insoluble- it doesn’t affect the water pot of cells
Branched chains- so easy to remove glucose
Large molecule- so does not leave cell
Coiled- so compact/ tightly packed/ can fit lots into a small space
give two ways in which the hydrolysis of ATP is used in cells
- to provide energy for other reactions
-to add a phosphate to other substances and make them more reactive/change their shape
why does an electron beam show more detail than a light microscope
-electron beams have a shorter wavelength
-electron microscope has a greater resolving power so objects closer together can be distinguished
