IB BIO Paper 1

The diagram shows an animal cell. The maximum diameter of the diagram is 25mm. The maximum diameter of the actual cell was 0.02mm.
What is the magnification of the drawing? 

• ×25 
• ×200 
• ×1250 
• ×2500 

What describes an enzyme? 

• a protein that acts as a catalyst 
• a protein that acts as a hormone 
• a vitamin that acts as a catalyst 
• a vitamin that acts as a hormone 

The two chambers of the heart which receive blood are known as the _________

• atria
• ventricles
• systemics
• pulmonic

Which of the following conclusions can be drawn from this graph?

• The optimum pH of the enzyme is 6.6.
  
• The optimum pH of the enzyme is 5.8
  
• The enzyme’s activity increases as pH increases 5.0 to 9.0
  
• The enzyme’s activity is greater around pH of 8.0 .
  

Tags

NGSS.MS-PS1-2

What is the chemical formula for glucose?

• C₂H₆O₂
• C₁₂H₁₂O₁₂
• C₂H₂O₂
• C₆H₁₂O₆

Tags

NGSS.HS-LS1-5

NGSS.HS-LS1-6

Which of the following is the correct equation for PHOTOSYNTHESIS?

• 6CO₂ + 6H₂O --> 6O₂ + C₆H₁₂O₆
• 6CO₂ + C₆H₁₂O₆ + 6H₂O --> O₂ 
• 6O₂ + 6H₂O --> 6CO₂ + C₆H₁₂O₆
• C₆H₁₂O₆ + 6O₂ ---> 6H₂O + 6CO₂ 

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

What structures are found in eukaryotes but not in prokaryotes? 

• Naked DNA and mitochondra
• Golgi apparatus and 70S ribosomes
• 70S ribosomes and nuclear membrane
• mitochondria and nuclear membrane

What type of fatty acid is shown in this diagram? 

• saturated cis
• saturated trans
• unsaturated cis
• unsaturated trans

The electron micrograph shows the chromosomes in one stage of meiosis in rice. Image I shows the whole cell with a boxed region. Image II shows a magnified view of the boxed region. 
What do the arrows indicate? 

• condensation
• chiasmata
• centrioles
• centromeres

Which groups of organisms converts carbon into a form that is available to primary consumers? 

• Decomposers
• Saprotrophs
• Detritivores
• Producers

Tags

NGSS.MS-LS2-3