Question

5. How many statements are true from given below?
(a) Polysomes is a chain of many ribosomes on a
common m-RNA
(b) Most of the pathogenic bacteria are Gram
negative
(c) Ribosomes are electron
ribonucleoprotein particles
(d) Chlorophyll pigments are present in stroma
(1) 4
(3) 2
(4) 1
23​

Answer 1

Answer:2 statements are true

Explanation:

Answer 2

Answer:

Statements (a), (b), and (c) are correct.

Explanation:

• A polyribosome is a collection of ribosomes that are connected to an mRNA molecule like "beads" on a "thread." It is made up of a combination of two or more ribosomes and an mRNA molecule that functions to convert mRNA instructions into polypeptides.
• Because they typically result in severe disease, gram-negative organisms are a particularly significant source of nosocomial bloodstream infections, pneumonia, and meningitis. Gram-negative pathogens are most frequently seen in Escherichia coli.
• Ribosomes are granular, dense, and spherical particles. They exist unrestricted in the cytoplasmic matrix or are still affixed to the rough endoplasmic reticulum. Chemically, ribonucleic acid (RNA) and proteins, sometimes known as ribonucleoproteins, make up the majority of ribosomes.
• The light-absorbing green pigment known as chlorophyll is found in the chloroplasts of algae and plants. For photosynthesis to occur, light is necessary. The thylakoid membrane of the chloroplast contains chlorophyll.

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