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Hello students, in this question we need to choose the correct option against some given statements.
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In the first question lactobacillus acidophilus organism is used to the correct option is option a that is change milk into butter.
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In next question the correct statement about health canada's childhood immunization schedule is option b that is it includes immunization for children between 2 months and 16 years of age.
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In the next question hiv is a retrovirus this means that it uses the host cells to option a turn rna into dna.
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Within host cell viral rna synthesizes single -stranded dna which is also known as complementary dna with the help of enzyme reverse transcriptase.
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Complementary dna forms its complementary strand.
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Next hamburger disease is caused by option b eating any undercooked foods which are contaminated by e .coli.
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Next the sole purpose of a virus is to option a reproduce.
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They reproduce using the metabolic machinery of the host cell they infect.
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In the next question the statement given is all mutated microbes are much stronger thus more potent than their predecessors.
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Bacteria can acquire resistance to antibiotics through random mutations in their dna that provide them with an advantage that helps them survive but not all mutated microbes are more potent than their predecessors so the given statement is false.
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Next living fossils which a bacteria lookalikes correct option is option b archaea.
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They provide clues to the earliest forms of life on earth.
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Next ball -shaped bacteria are called correct option is option a pockeye.
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They are spherical around shaped bacteria.
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In the next question antibiotics are inappropriate for treating the common cold the correct option is option c a virus causes a common cold so antibiotics which treat bacteria are inappropriate.
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Viruses are surrounded by a protective protein coating.
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They don't have cell walls that can be attacked by antibiotics like bacteria does...