Cambridge AS & A Level Biology Semester 1 Review

Which of the bonds will be last to break as the temperature of an enzyme increased?

• hydrogen
• hydrophobic interactions
• ionic
• peptide

Which statements about fatty acids are correct?
1. form part of cell membranes
2. form storage droplets
3. are synthesised by the Golgi body

• 1,2 & 3
• 1 & 2
• 1 & 3
• 2 & 3

Which substances can pass directly through cell surface membranes without using a carrier or channel protein?
1. Ca2+ and Na+
2. O2
3. C6H12O6

• 1 & 2
• 1 & 3
• 2 & 3
• 2

Which process occurs during prophase of the mitotic cell cycle in an animal cell?

• division of centromeres
• formation of chromosomes
• replication of DNA
• separation of centrioles

Tags

NGSS.HS-LS1-4

During transpiration, what is the site of evaporation of water in the leaves?

• air spaces
• guard cell walls
• mesophyll cell walls
• stomata

Which of the following matches the phase of cellular respiration with one of its products?

• Glycolysis: Acetyle CoEnzyme A
• Link Reaction: Pyruvate
• Krebs Cycle: CO2
• Oxidative Phosphorylation: reduced NAD

Tags

NGSS.HS-LS1-7

Which of the following is NOT produced during the process of alcoholic fermentation in yeast?

• Reduced NAD
• CO2
• Lactate
• Ethanal

What are the products of the light dependent reactions of photosynthesis?

• ATP, RuBP and reduced NAD
• ATP, oxygen and reduced NADP
• GP, oxygen and reduced NAD
• GP, reduced NADP and RuBP

Which of the following photosynthetic pigments absorbs no orange wavelengths?

• chlorophyll a
• chlorophyll b
• carotenoids
• All of these absorb orange wavelengths

A sample of milk was tested with Benedict's solution and yellow colour was observed. 
Which conclusion is correct?

• No non-reducing sugars are present
• Reducing sugars are present
• There is a high concentration of glucose
• There is a high concentration of sucrose