Paper 1- missed exam Questions

Question 1

How is the Golgi involved in the secretion of enzymes

Answer 1

packages and transports them

Question 2

Principles and limitations of a transmission electron microscope

Answer 2

principles:
- beam of electrons passed through a substance
- denser areas absorb more
- these appear darker
- this is possible as electrons have a low wavelength

Limitations:
-non living only
- 2D
- complex training needed
-extremely thin
- vaccume

Question 3

How do interphase and mitosis lead to the production of two identical daughter cells?

Answer 3

interphase- genetic material duplicates, using base pairing, to produce two identical sister chromatids

Mitosis- pulls appart to two seperate poles