IB Topic 2

What helps to regulate transcription?

• Nucleosomes
• DNA Polymerase
• tRNA
• Ribosomes

In this electronmicrograph of a eukaryotic nucleus, what could be happening to DNA at any of the arrows?

• Transcription
• Translation
• Replication

What happens during glycolysis for one molecule of glucose?

• Two pyruvates are formed
• There is a net gain of two NADPH + H+
•  There is a net loss of two ATP
• Two acetyl CoA are formed

Tags

NGSS.HS-LS1-7

What substance is produced from glucose during anaerobic respiration in all organisms?

•  Carbon dioxide
• Ethanol
• Lactate
• Pyruvate

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

How can the rate of photosynthesis be measured?
I. By the amount of oxygen produced
II. By the increase in biomass
III. By the amount of carbon dioxide produced

• I
• I & II
• I & III
• I, II & III

How does chlorophyll respond to the red, green and blue wavelengths in white light?

• A

• B

• C

• D

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

What is the source of the oxygen released into the atmosphere in photosynthesis?

• Glucose
• CO2
• Water
• Chlorophyll

What is a difference between carbohydrates and lipids in energy storage?

• Carbohydrates are used for long term storage and lipids for short term storage.
• Carbohydrates contain more energy per 100g than lipids
• Carbohydrates store food only in plants whereas lipids store food in plants and animals.
• Carbohydrates are more easily transported to where energy is required than lipids.

Which molecule is a polysaccharide?

• Cellulose
• Fructose
• Maltose
• Sucrose

What are the most frequently occurring elements in living organisms?

• nitrogen, carbon, oxygen and hydrogen
• carbon, phosphorus, oxygen and nitrogen
• calcium, sodium, nitrogen and phosphorus
• calcium, phosphorus, iron and sodium