1.
State what is meant by ultrastructure of a eukaryotic cell. [1]
JD SCIENCE
Cells
Answer all questions. Show working. Answers are in a separate file on the Worksheets page — do not look at them until you have finished.
2.
State what is meant by a prokaryotic cell. [1]
3.
State what is meant by the magnification formula. [1]
4.
State what is meant by an organelle. [1]
5.
State what is meant by the fluid mosaic model. [1]
6.
State what is meant by osmosis in terms of water potential. [1]
7.
State what is meant by active transport. [1]
8.
State what is meant by mitosis. [1]
9.
State what is meant by the cell cycle. [1]
10.
State what is meant by an antibody. [1]
11.
Amira is asked about ultrastructure of a eukaryotic cell in a AQA Biology paper.
(a) Describe ultrastructure of a eukaryotic cell. [2]
(b) Explain why ultrastructure of a eukaryotic cell is important in this topic. [3]
12.
Amira is asked about a prokaryotic cell in a AQA Biology paper.
(a) Describe a prokaryotic cell. [2]
(b) Explain why a prokaryotic cell is important in this topic. [3]
13.
Amira is asked about the magnification formula in a AQA Biology paper.
(a) Describe the magnification formula. [2]
(b) Explain why the magnification formula is important in this topic. [3]
14.
Amira is asked about an organelle in a AQA Biology paper.
(a) Describe an organelle. [2]
(b) Explain why an organelle is important in this topic. [3]
15.
Amira is asked about the fluid mosaic model in a AQA Biology paper.
(a) Describe the fluid mosaic model. [2]
(b) Explain why the fluid mosaic model is important in this topic. [3]
16.
Amira is asked about osmosis in terms of water potential in a AQA Biology paper.
(a) Describe osmosis in terms of water potential. [2]
(b) Explain why osmosis in terms of water potential is important in this topic. [3]
17.
Image 40 mm, actual 8 µm. Magnification [3]
18.
Scale bar 2 cm represents 5 µm. Magnification [3]
19.
A cell is 20 µm. Length in mm [3]
20.
Water potential: cell −400 kPa, solution −800 kPa. Direction of water [3]
21.
Mitotic index: 18 cells in mitosis out of 200 [3]
22.
A bacterium 2 µm long at ×10 000. Image size [3]
23.
Amira carries out a AQA-style required practical linked to cells and microscopy. This is a typical AQA required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
24.
Amira carries out collecting valid data for cells and microscopy. This is a typical AQA required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
25.
Amira carries out drawing a graph for cells and microscopy. This is a typical AQA required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
26.
Amira carries out evaluating a method about cells and microscopy. This is a typical AQA required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
27.
Compare ultrastructure of a eukaryotic cell with a prokaryotic cell. [4]
28.
Compare a prokaryotic cell with the magnification formula. [4]
29.
Compare the magnification formula with an organelle. [4]
30.
Compare an organelle with the fluid mosaic model. [4]
31.
Apply your knowledge of active transport to this situation: e.g. mineral ions in roots [3]
32.
Apply your knowledge of mitosis to this situation: prophase metaphase anaphase telophase [3]