Teachoo Questions

What is the difference between autotrophic and heterotrophic modes of nutrition?

Why are green plants called producers?

Plants receive their nutrients mainly from:

Write difference between light reaction and dark reaction. Important

How would you test the presence of starch in leaves? Important

What do you mean by parasitic nutrition?

Difference between saprophytes and parasites.

Name one organism, each having saprophytic, parasitic and holozoic mode of nutrition. Important

Write one similarity and one difference between the mode of nutrition in amoeba and human beings. Important

What is chyme? Important

Which of the following is essential for preventing dental caries? Important

What is the difference between internal and external respiration?

List the similarities and differences between aerobic and anaerobic mode of respiration Important

What are the by products of anaerobic respiration?

Explain how photosynthesis is different from respiration? Important

Give an experiment to prove that carbon dioxide is released during respiration.

How does carbon dioxide react with lime water?

What are the different ways in which glucose is oxidized to provide energy in various organisms? Important You are here

The fermentation of glucose by yeast normally yields:

Differentiate between tracheid and vessels? Important

Water absorption through roots can be increased by keeping the plant: Important

What are components of the transport system in human beings? What are their functions?

Draw a schematic representation of transport and exchange of oxygen and carbon dioxide in human bod Important

Draw a flowchart to show the circulation of blood through human heart

Why is Homeostasis important?

How do the leaves of the plants help in excretion? Important

Draw a well - labelled diagram of a human excretory system and label the parts

What is the process of dialysis?

Why is it necessary to excrete waste products?

Differentiate between egestion and excretion Important

Difference between transpiration and translocation. Important

Class 10
Chapter 6 Class 10 - Life Processes

What are the different ways in which glucose is oxidized to provide energy in various organisms?



  • Glucose is a six carbon atom compound. 
  • The oxidation of glucose to pyruvic acid or pyruvate is called glycolysis
  • One molecule of glucose in glycolysis produces two molecules of pyruvic acid. 
  • Pyruvic acid is a three carbon atom compound.

GLYCOLYSIS - Teachoo.jpg

Breakdown of Glucose inside cell-01.jpg

The fate of pyruvate formed during respiration depends on whether oxygen is present in the cells or not. 

  • If oxygen is present in the cells then p yruvate is completely oxidized to carbon dioxide and water and a l ot of energ y is produced in the form of ATP.
  • If however oxygen is not present in the cells, there is absence of oxygen, pyruvate is converted to either ‘ ethanol and carbon dioxide or ‘lactic acid’ depending on whether such processes take place in the plant cell or an animal cell.

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CA Maninder Singh is a Chartered Accountant for the past 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo