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Bacteria Spores Characteristics

Created by

@TollFreeLesNabis

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Questions and Answers

Which of the following statements about spores is NOT true?

They can allow bacteria to exist in suspended animation for centuries.

They contain a high concentration of calcium bound to dipicolinic acid.

They contain high concentrations of the essential proteins and ribosomes. (correct)

They contain a complete copy of the chromosomes.

Which bacteria are known to form spores?

Bacillus and Streptococcus

Bacillus and Clostridium (correct)

Staphylococcus and Streptococcus

Clostridium and Staphylococcus

What purpose does the high concentration of calcium bound to dipicolinic acid serve in spores?

Preventing nutrient entry

Facilitating cell division

DNA protection (correct)

Metabolizing sugars

Which of the following statements about the misuse of antibiotics is correct?

<p>It selects for resistance mutants.</p> Signup and view all the answers

Spores protect bacterial DNA from which of the following?

<p>Both A and B</p> Signup and view all the answers

Study Notes

Spores

Spores allow bacteria to exist in suspended animation for centuries.
Spores contain a high concentration of calcium bound to dipicolinic acid.
Spores contain a complete copy of the chromosomes, but do not contain high concentrations of essential proteins and ribosomes.
Spores protect DNA from intense heat, radiation, and other environmental stresses.

Bacteria that Form Spores

Only some Gram-positive (G+) bacteria, such as Bacillus and Clostridium, are capable of forming spores.
Gram-negative (G-) bacteria do not form spores.

Antibiotic Resistance

The misuse of antibiotics, including their use in animal feed, selects for resistance mutants, contributing to the development of antibiotic-resistant bacteria.

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Description

Learn about the characteristics of bacterial spores, including their composition and protective features. Identify which types of bacteria form spores.