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The two sub-units of ribosome remain united a critical ion level of
The two sub units of ribosome remain united at a criticalion level of magnesium. The presence of magnesium and its amount play an important role in the appearance and structure of the ribosomes. If magnesium is absent in medium, the large particles fall apart to present a group of smaller particles.
Cellulose is the major component of cell walls of
Polysome is formed by
Polysome (Polyribosome) is a complex formed by several ribosomes attached to a single mRNA molecule in the process of translation.
Keeping in view the fluid mosaic model for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other (described as flipflop movement)?
Which of the following cell organelle is considered to be rich in catabolic enzymes?
Which one of the following is not a constituent of cell membrane?
Select the wrong statement from the following.
Both chloroplasts and mitochoridria have an internal compartment, the thylakoid space bounded by double membrane.
Which of the following statements regarding mitochondrial membrane is not correct ?
The enzymes of electron transport system are present in inner mitochondrial membrane.
Protein synthesis in an animal cell occurs
Protein synthesis in an animal cell occurs on ribosomes present in cytoplasm as well as in mitcohondria because mitochondria and chloroplast also have their own DNA,RNA and ribosome so can synthesize half of their required proteins.
Centromere is required for:
During anaphase, APC (anaphase promoting complex)develops. It degenerates proteins binding the two chromatids in the region of centromere. As a result the centromere of each chromosome divides. This converts the two chromatids into daughter chromosomes.