True or False (1 points X 10-10 points) 21 Tight junctions and desmosomes are te

Question

True or False (1 points X 10-10 points) 21 Tight junctions and desmosomes are terms that refer to the same structure In eukaryotic cells, DNA is only found in nucleus. 23 Cell-cell anchoring junctions are always connected to intermediate filaments During photosynthesis, oxygen molecules are generated in photosynthesis I. 24 25 The formation of ATP in the mitochondria and chloroplast both involve the formation of a proton gradient. 26 The protein synthesis does not always start in cytoplasm. 27 Clathrin coated vesicles transport material endosome to lysosome Cop I is found in the vesicles transporting between ER and Golgi apparatus. 29 The general name for an enzyme that adds phosphate to a protein is phosphatase 30 Nerve and muscle cells are in G1 phase.

Explanation / Answer

24. False

In photosynthesis, the oxygen molecules are generated by pholysis of water in Photosystem II.

25. True

Both involve a proton gradient which drives ATP synthesis by ATP synthase.

26. False

Protein synthesis always starts in cytoplasm be it a cytoplasmic protein, proteins of organelles or a secreted protein.

27. True

This occurs in the process of clathrin mediated endocytosis. Clathrin coated vesicles are directed to fuse with and deliver their membrane and content to the intracellular organelles of the endocytic pathway, the endosomes and the lysosomes.

28. False

COP I is involved in transport from Golgi to the ER or into Golgi complex.

COP II is involved in transport from ER to Golgi.

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