11. These structures are responsible for the internal morphological framework of
ID: 272341 • Letter: 1
Question
11. These structures are responsible for the internal morphological framework of the cell. 12. The spliced product of heterogeneous nuclear RNA will be made and exported out of this cellular structure(s). 13. The energy generating reactions of oxidation and reduction occur in this compartment of the cell? 14. These foundational structures of the cell plays a role in cytoplasmic division and amoeboid-like movement 15. These structures of the cell are responsible for intracellular translocation of cargo. 16. This specific tertiary and quaternary gene expression product is found exclusively in the extracellular leaflet of a cell. 17. The female reproductive hormones estrogen and progesterone are synthesized by this subcellular structure. 18. This framework of the cell plays a role in cell motility in eukaryotic cells.Explanation / Answer
Answer 11. Endoplasmic reticulum or ER
ER is a tubular structure that provides internal framework to the cell. It also connects nucleus with the plasma membrane.
Answer 12. Exon junction complex or EJC helps in the transport of exans from the nucleus to the cytoplasm where gene expression of these exons will be done.
Answer 13. Mitochondria
It is the powerhouse of the cell because it produces energy in the form of ATP. Oxidative phosphorylation helps in producing ATP in the mitochondrial matrix.
Answer 14. Microtubules helps in cytoplasmic division by regular depolymerisation. Amorboid like movement by regular polymerisation and depolymerisation.
Answer 15. Golgi body
The vesicles of Golgi body helps in taking unprocessed polypeptides from ER, then these fuse with GB, post translation modifications occur and then vesicles of GB helps in transport of processed protein.
Answer 16. Extrinsic proteins
These are found on the outer side of the plasma membrane. Once proteins are processed in GB they are transported out through vesicles to become a part of external proteins. Not all the proteins translated in cytoplasm moves out, some may function as enzymes too in the cell itself.
Answer 17. Ovary
During the menstrual cycle, the levels of these hormones goes up and down. It deviates in the menstrual, follicular and the luteal phase.
Answer 18. Microfilaments
These are composed of the protein actin and myosin, that helps in cell motility and muscle contraction too.
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