18 Questions
Which type of signalling involves signalling molecules acting on the same cell?
Autocrine signalling
Which type of signalling involves long-range signalling?
Endocrine signalling
Which organelle releases calcium ions crucial for various signalling pathways?
Endoplasmic reticulum (ER)
Which of the following is a benefit of using Nomarski (DIC) optics in microscopy?
It enables visualization of 3D structures.
What is the main difference between prokaryotes and eukaryotes?
Prokaryotes have membrane-bound organelles, while eukaryotes do not.
Which of the following is NOT a feature found in eukaryotic cells?
A rigid cell wall
Which of the following statements is incorrect about the Golgi Apparatus?
It disassembles during cell division
Which of the following statements is most correct about mitochondria?
Mitochondria are able to synthesize proteins for themselves
Protein folding in the rough endoplasmic reticulum is assisted by
The formation of disulphide bonds
Which of the following is incorrect about lysosomes?
The pH of lysosomes is essential for efficient protein degradation
Which of the following is true about untranslated regions (UTRs)?
Genes have both 5' and 3' UTRs.
Which components are necessary for efficient translation to occur?
tRNA, ribosomes, amino acids, mRNA
What is the correct order of an mRNA structure?
5'Cap - 5'UTR - ORF - 3'UTR - PolyA
Which of the following is true about DNA and RNA base pairing?
DNA can base pair with both DNA and RNA.
Which of the following is true about the structure of DNA?
The double helix structure is determined by the order of the bases.
Which of the following is true about the role of the endocytic pathway in protein trafficking?
Delivers extracellular proteins into the cell for degradation or recycling.
Which of the following is true about the role of the SNARE complex in protein trafficking?
Promotes vesicle fusion during protein trafficking.
Which of the following is true about the process of transcription and splicing?
Polyadenylation of the mRNA stabilizes it.
This quiz tests your knowledge on various cellular processes and molecules involved in membrane transport. It includes questions on endocytosis, exocytosis, and the role of phosphoinositides in regulating membrane transporters. Can you choose the correct answers and demonstrate your understanding of these key concepts?
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