2015年11月IB生物SL真题下载-Paper1
1. Two populations of the same fish species were fed different diets to investigate the effect of differing nutrition on their growth. What is an appropriate method to determine the significance of a resulting difference?
A. Calculate the mean for each population
B. Calculate the standard deviation for each population
C. Graph the results
D. Perform a t-test
2. Which shows the order of size from smallest to largest?
A. Viruses → cell membrane thickness → eukaryotic cells → prokaryotic cells
B. Cell membrane thickness → prokaryotic cells → viruses → eukaryotic cells
C. Cell membrane thickness → viruses → prokaryotic cells → eukaryotic cells
D. Viruses → cell membrane thickness → prokaryotic cells → eukaryotic cells
3. Animal cells often secrete glycoproteins as extracellular components. What is a role of these glycoproteins?
A. Adhesion
B. Additional energy reserve
C. Membrane fluidity
D. Water uptake
4. During which stage does the cell surface area to volume ratio decrease?
A. Interphase
B. Metaphase
C. Telophase
D. Cytokinesis
5. The image represents an Escherichia coli.
What is the function of structure X?
A. Active transport
B. Attachment
C. Binary fi ssion
D. Cell respiration
6. Which always contains carbon, hydrogen and oxygen?
- I. Carbohydrate
- II. Protein
- III. Fat
A. I and II only
B. I and III only
C. II and III only
D. I, II and III
7. Which molecule can be hydrolyzed?
A. Glycerol
B. Maltose
C. Fructose
D. Galactose
8. The diagram shows a dinucleotide.
Which type of bond is identified by the arrow?
A. Phosphate
B. Hydrogen
C. Covalent
D. Peptide
9. What is required to replicate DNA?
A. Temperature of 37 °C
B. Free nucleotides carrying A, C, G and T bases
C. Plasmids
D. Endonuclease
10. How is the information in the genetic code used?
A. To predict the genotype of gametes
B. To distinguish prokaryotic genomes from eukaryotic genomes
C. To deduce phenotypes in pedigree charts
D. To translate mRNA into polypeptides
2015年11月IB生物SL真题余下省略！
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