Question
Name the scientists who proposed the cell theory. Also, list its main postulates.

Answer

  • Cell theory was first proposed by Matthias Schleiden and Theodor Schwann; later Rudolf Virchow explained the origin of new cells.
  • It's postulates are:
  1. All living organisms are composed of cell(s) and it's/ their products.
  2. All cells arise from pre-existing cells.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Can you describe what happens when milk is converted into curd or yoghurt from your understanding of proteins?
Give one antagonistic functions of each of the following hormone pairs.
  1. Gibberellins- Abscisic acid
  2. Cytokinin- Ethylene
  3. Ethylene- Auxin
Mahima after returning from Biology class asked his father why do only green plantsmanufacture their food using sunlight and not the animals? Father replied that green plants have this ability due the thepresence of green pigment called chlorophyll (present in the chloroplants) in their cells?
  1. Why chloroplast are only present in plant cells?
  2. Name the various types of plastids found in plants.
  3. What is the function of chloroplast in plant cells?
  4. What quality is reflected in Ankita's behaviour?
Describe the role of liver, lungs and skin in excretion.
Highlight the criteria considered for five-kingdom system of classification.
Examine the figure.

  1. Is this structure present in animal cell or plant cell?
  2. Can these be passed on to the progeny? How?
  3. Name the metabolic processes taking place in the places marked (1) and (2).
Differentiate between pill and fimbriae.
An Rh-negative woman is carrying an Rh-positive foetus for the second time. Describe the consequences of Rh-incompatibility in this case?

OR

Why is it necessary to check the Rh-factor of the blood of a pregnant woman?

What are the assumptions made during the calculation of net gain of ATP?
The energy yield in terms of ATP is higher in aerobic respiration than during anaerobic respiration. Explain.