Biology Ib Hl Paper
N10/4/BIOLO/HPM/ENG/TZ0/XX
88106001
Biology HigHer level PaPer 1 Tuesday 2 November 2010 (afternoon) 1 hour INSTRUCTIONS TO CANDIDATES
• Do not open this examination paper until instructed to do so. • Answer all the questions. • For each question, choose the answer you consider to be the best and indicate your choice on
the answer sheet provided.
8810-6001
17 pages © International Baccalaureate Organization 2010
– 2 – 1.
N10/4/BIOLO/HPM/ENG/TZ0/XX
[Question and image removed for copyright reasons]
2.
What is the sequence of stages during the cell cycle? A. B. C. D. G1 mitosis G1 G1 S G1 G2 G2 G2 G2 S mitosis cytokinesis S
cytokinesis mitosis
cytokinesis S
mitosis cytokinesis
8810-6001
– 3 – 3.
N10/4/BIOLO/HPM/ENG/TZ0/XX
The levels of iron in liver tissue from 12 rats fed on beef and 11 rats fed on plant oils were compared using the t-test to see if there was a significant difference at the 5 % level. Part of the table showing the critical values for the t-test is shown below. Degrees of freedom 19 20 21 22 23 p = 0.1 1.729 1.725 1.721 1.717 1.714 p = 0.05 2.093 2.086 2.080 2.074 2.069 p = 0.01 2.861 2.845 2.831 2.819 2.807 p = 0.001 3.883 3.850 3.819 3.792 3.767
What is the critical value above which the two samples can be considered significantly different? A. B. C. D. 2.086 2.080 2.074 2.069
4.
When observing the behaviour of a vesicle in a cell, what identifies it as a vesicle only involved in exocytosis? A. B. C. D. Adhesion between two lipid bilayers Fusion of two membranes Secretion of material Invagination of a plasma membrane
8810-6001
Turn over
– 4 – 5.
N10/4/BIOLO/HPM/ENG/TZ0/XX
Which diagram best illustrates the interactions between water molecules? A.
H O O H H O H H O O H H H H H H H
B.
H O
O H
H H O
C.
D.
6.
The base
88106001
Biology HigHer level PaPer 1 Tuesday 2 November 2010 (afternoon) 1 hour INSTRUCTIONS TO CANDIDATES
• Do not open this examination paper until instructed to do so. • Answer all the questions. • For each question, choose the answer you consider to be the best and indicate your choice on
the answer sheet provided.
8810-6001
17 pages © International Baccalaureate Organization 2010
– 2 – 1.
N10/4/BIOLO/HPM/ENG/TZ0/XX
[Question and image removed for copyright reasons]
2.
What is the sequence of stages during the cell cycle? A. B. C. D. G1 mitosis G1 G1 S G1 G2 G2 G2 G2 S mitosis cytokinesis S
cytokinesis mitosis
cytokinesis S
mitosis cytokinesis
8810-6001
– 3 – 3.
N10/4/BIOLO/HPM/ENG/TZ0/XX
The levels of iron in liver tissue from 12 rats fed on beef and 11 rats fed on plant oils were compared using the t-test to see if there was a significant difference at the 5 % level. Part of the table showing the critical values for the t-test is shown below. Degrees of freedom 19 20 21 22 23 p = 0.1 1.729 1.725 1.721 1.717 1.714 p = 0.05 2.093 2.086 2.080 2.074 2.069 p = 0.01 2.861 2.845 2.831 2.819 2.807 p = 0.001 3.883 3.850 3.819 3.792 3.767
What is the critical value above which the two samples can be considered significantly different? A. B. C. D. 2.086 2.080 2.074 2.069
4.
When observing the behaviour of a vesicle in a cell, what identifies it as a vesicle only involved in exocytosis? A. B. C. D. Adhesion between two lipid bilayers Fusion of two membranes Secretion of material Invagination of a plasma membrane
8810-6001
Turn over
– 4 – 5.
N10/4/BIOLO/HPM/ENG/TZ0/XX
Which diagram best illustrates the interactions between water molecules? A.
H O O H H O H H O O H H H H H H H
B.
H O
O H
H H O
C.
D.
6.
The base