1. (i) Which organelle is known as the powerhouse of a cell? (ii) What is the full form of ATP? (iii) This organelle is able to synthesise its own protein. How? (½+½+1=2)
Answers
Answer:
1. mitochondria
2. Adenosine triphosphate
3. The mitochondrion is the cell organelle which can self-replicate and form multiple copies.
The organelles have their own DNA which can regulate the synthesis of RNA and the proteins (enzymes) required for its multiplication.
1. Mitochondria is known as the power house of the cell .It provides energy to the cell.
2.ATP stands for Adenosine triphosphate, an organic molecule responsible for driving nearly all cellular mechanisms and processes in living organisms. Hence, biologists often refer to ATP as the “energy currency of the cell.” ... The nitrogenous base present in ATP is adenine..
3.Ribosomes, large complexes of protein and ribonucleic acid (RNA), are the cellular organelles responsible for protein synthesis. They receive their “orders” for protein synthesis from the nucleus where the DNA is transcribed into messenger RNA (mRNA)..
.How does ???
1.
Mitochondria, using oxygen available within the cell convert chemical energy from food in the cell to energy in a form usable to the host cell. ... NADH is then used by enzymes embedded in the mitochondrial inner membrane to generate adenosine triphosphate (ATP). In ATP the energy is stored in the form of chemical bonds.
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2. Protein synthesis is the process in which cells make proteins. It occurs in two stages: transcription and translation. ... Translation occurs at the ribosome, which consists of rRNA and proteins. In translation, the instructions in mRNA are read, and tRNA brings the correct sequence of amino acids to the ribosomes.
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