Cells

Question 1

Electron microscopes illuminate specimens and produce images using _

Answer 1

Beams of electrons

Question 2

The largest single cell is that of the _

Answer 2

Alga caulerpa taxifola

Question 3

Alga caulerpa taxifola can grow to a length of

Answer 3

12in (30 cm)

Question 4

Cells were discovered by English scientist _

Answer 4

Robert Hooke

Question 5

Cells discovered in year _

Answer 5

1665

Question 6

Robert Hooke used newly invented microscope to examine _ in which he saw small pores he called cells

Answer 6

Cork

Question 7

Simple light microscopes use

Answer 7

One type of lenses

Question 8

Compound microscopes use two type of lenses (2)

Answer 8

Objective lenses (focus)

Eyepiece lenses (increase resolution)

Question 9

Light microscopes can magnify up to _ times actual size

Answer 9

2,000

Question 10

For extra visibility, you can _ what is under microscope

Answer 10

Stain

Question 11

_ carries water and minerals in corn

Answer 11

Xylem

Question 12

_ carries soluble nutrients such as sugar

Answer 12

Phloem