Which of the Following Is a Characteristic of Protein Translocation

question 16

Multiple Choice

Which of the following is a characteristic of protein translocation systems?

• A)Translocons passively move proteins across the membrane.
• B)Proteins to be translocated are made as preproteins containing distal blocks of amino acid sequences that act as sorting signals.
• C)Membranes involved in translocation have specific protein receptors exposed on their cytosolic faces.
• D)Pre-proteins are maintained in a tightly folded,translocation-competent conformation through interaction with molecular chaperones.

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Definitions:

Ozone

A form of oxygen with three atoms per molecule, forming a layer in the Earth's atmosphere that absorbs most of the sun's ultraviolet radiation.

Ultraviolet Radiation

A type of electromagnetic radiation with a wavelength shorter than that of visible light but longer than X-rays, capable of causing chemical reactions and damaging living tissues.

Oxygen

Oxygen is a chemical element with symbol O, essential for cellular respiration in most living organisms and a key component of Earth's atmosphere.

Cyanobacteria

Photosynthetic microorganisms, also known as blue-green algae, that are important for oxygen production and are found in many aquatic environments.