GCSE Biology Dual Higher paper 1

Which of these cells ALL contain a nucleus?

• Plants and Bacteria

• Animals, plants, fungi, protists

• Animals, plants and bacteria

• Protists and fungi

Which of the following is a prokaryote?

• Salmonella

• Measles

• Malaria

• Amoeba

What is the function of the nucleus?

• Where chemical reactions occur in the cell.

• Proten synthesis

• Respiration

• Stores genetic info and controls cells activity

What happens in the mitochondria?

• Protein synthesis

• photosynthesis

• respiration

• breakdown of pathogens

What happens in respiration?

• proteins are made.

• glucose is made

• energy is made from glucose

• energy is released from glucose

What are stem cells?

• Cells that have been differentiated.

• Cells that are specialised for a specific function.

• Undifferentiated cells that can produce other types of cell.

What is the purpose  of an enzyme?

• give permission for the reaction
• raise activation energy
• speed up reactions
• control how many reactions occur

Tags

NGSS.MS-LS1-7

Where do substrates bind on an enzyme?

• voltage-gated channels
• surface receptor
• calcium channels
• active site

What is the name for the mechanism of enzyme activity?

• Lock and key
• jigsaw puzzle
• hammer and nail
• two hands pattern

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 .