1.
State what is meant by a tissue. [1]
JD SCIENCE
B2 Scaling up
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 an organ system. [1]
3.
State what is meant by an enzyme. [1]
4.
State what is meant by the lock and key theory. [1]
5.
State what is meant by bile. [1]
6.
State what is meant by the small intestine. [1]
7.
State what is meant by the heart. [1]
8.
State what is meant by an artery. [1]
9.
State what is meant by a vein. [1]
10.
State what is meant by a capillary. [1]
11.
Grace is asked about a tissue in a OCR Biology paper.
(a) Describe a tissue. [2]
(b) Explain why a tissue is important in this topic. [3]
12.
Grace is asked about an organ system in a OCR Biology paper.
(a) Describe an organ system. [2]
(b) Explain why an organ system is important in this topic. [3]
13.
Grace is asked about an enzyme in a OCR Biology paper.
(a) Describe an enzyme. [2]
(b) Explain why an enzyme is important in this topic. [3]
14.
Grace is asked about the lock and key theory in a OCR Biology paper.
(a) Describe the lock and key theory. [2]
(b) Explain why the lock and key theory is important in this topic. [3]
15.
Grace is asked about bile in a OCR Biology paper.
(a) Describe bile. [2]
(b) Explain why bile is important in this topic. [3]
16.
Grace is asked about the small intestine in a OCR Biology paper.
(a) Describe the small intestine. [2]
(b) Explain why the small intestine is important in this topic. [3]
17.
A person breathes 12 times a minute, 0.5 dm³ each breath. Calculate the volume breathed in 1 hour. [3]
18.
Heart rate is 80 bpm and stroke volume is 70 cm³. Calculate cardiac output. [3]
19.
An enzyme reaction produces 24 cm³ of gas in 2 minutes. Calculate the mean rate in cm³/s. [3]
20.
A villus is 1 mm long and there are about 20 per mm². Estimate how many villi on 1 m² of intestine. [3]
21.
Blood travels 1.5 m in 1.2 s in an artery. Calculate the mean speed. [3]
22.
A patient has a breathing rate of 15 /min. How many breaths in a day? [3]
23.
Grace carries out the enzyme required practical (amylase and starch / catalase). This is a typical OCR 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.
Grace carries out food tests for sugar, starch, protein and lipid. This is a typical OCR 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.
Grace carries out investigating the effect of pH on amylase. This is a typical OCR 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.
Grace carries out dissecting a heart or looking at a heart model. This is a typical OCR 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 arteries with veins. [4]
28.
Compare the small intestine with the large intestine. [4]
29.
Compare a communicable disease with a non-communicable disease. [4]
30.
Compare aerobic exercise effects with long-term training effects on the heart. [4]
31.
Apply your knowledge of the heart to this situation: blood is pumped to the body at higher pressure [3]
32.
Apply your knowledge of an artery to this situation: withstand high pressure [3]