alleryWhich enzyme splits sucrose into glucose and fructose in plant cells?
- Invertase
- Aldolase
- Hexokinase
- Enolase
Show answer and solution
Correct answer: A. Invertase
Invertase hydrolyses sucrose into glucose and fructose, which then enter glycolysis.
NEET UG Respiration in Plants — practice questions — page 3
Explore 100 free Respiration in Plants questions in NEET UG Biology. Open each question or exercise to read its content, reference answers and available explanation.
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Showing questions 61–90 of 100.
Which enzyme splits sucrose into glucose and fructose in plant cells?Read the answer and worked solution →How many enzyme-controlled reactions make up glycolysis?Read the answer and worked solution →Which glycolytic conversion consumes ATP?Read the answer and worked solution →Fructose 1,6-bisphosphate splits into PGAL andRead the answer and worked solution →At which glycolytic step is NADH + H+ formed from NAD+?Read the answer and worked solution →How many ATP does glycolysis actually produce per glucose before subtracting ATP used?Read the answer and worked solution →Pyruvic acid becomes ethanol in yeast throughRead the answer and worked solution →In muscles short of oxygen, pyruvic acid is reduced to lactic acid byRead the answer and worked solution →Lactic acid or alcoholic fermentation releases about what share of the energy in glucose?Read the answer and worked solution →Where are electrons passed to O2 with ATP synthesis in aerobic respiration?Read the answer and worked solution →The pyruvic dehydrogenase reactions require which coenzymes?Read the answer and worked solution →How many NADH form when both pyruvates from one glucose become acetyl CoA?Read the answer and worked solution →Which enzyme joins the acetyl group with oxaloacetic acid to give citric acid?Read the answer and worked solution →In the TCA cycle, citrate is first isomerised toRead the answer and worked solution →In one turn of the TCA cycle, NAD+ is reduced to NADH + H+ at how many points?Read the answer and worked solution →The FADH2 that passes electrons to ubiquinone via complex II comes from oxidation ofRead the answer and worked solution →Continued running of the TCA cycle needs steady replenishment ofRead the answer and worked solution →Per glucose, pyruvate oxidation plus two TCA turns yield how many NADH + H+?Read the answer and worked solution →Complex I of the mitochondrial electron transport system isRead the answer and worked solution →Electrons taken from NADH by complex I are next passed toRead the answer and worked solution →Reduced ubiquinone passes electrons to cytochrome c through which complex?Read the answer and worked solution →Besides cytochromes a and a3, complex IV containsRead the answer and worked solution →The F0 part of ATP synthase isRead the answer and worked solution →During ATP synthesis, protons pass through F0 in which direction?Read the answer and worked solution →The respiratory ATP balance sheet assumes thatRead the answer and worked solution →When fats are respired, glycerol enters the respiratory pathway asRead the answer and worked solution →Fatty acids enter the respiratory pathway after being degraded toRead the answer and worked solution →Before amino acids enter the respiratory pathway they usually undergoRead the answer and worked solution →Before being respired, other carbohydrates are usually first converted intoRead the answer and worked solution →When a cell makes fatty acids, which respiratory intermediate does it withdraw?Read the answer and worked solution →
Worked practice questions
How many enzyme-controlled reactions make up glycolysis?
- Six
- Eight
- Ten
- Twelve
Show answer and solution
Correct answer: C. Ten
Glycolysis is a chain of ten reactions, each under a different enzyme, turning glucose into pyruvate.
Which glycolytic conversion consumes ATP?
- Phosphoenolpyruvate to pyruvate
- BPGA to 3-phosphoglyceric acid
- F6P to fructose 1,6-bisphosphate
- PGAL to 1,3-bisphosphoglycerate
Show answer and solution
Correct answer: C. F6P to fructose 1,6-bisphosphate
Phosphorylating fructose 6-phosphate to fructose 1,6-bisphosphate uses ATP, while the other steps form ATP or NADH.
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