Bacterial Nucleoid and Plasmids

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Which of the following molecules are synthesized by N.deltocephalinicola for insects?

Essential amino acids (correct)

Lipids

Carbohydrates

Proteins

Which color in the provided text represents Insect DNA?

Red

Blue (correct)

Yellow

Green

What is the extreme halophile Archaeon mentioned in the text?

Halonium walsbyi

Halobacterium walsbyi

Halococcus walsbyi

Haloquadratum walsbyi (correct)

What is the primary component of Gram-Positive cell walls?

Peptidoglycan Signup and view all the answers

Which process does Facilitated Diffusion not require?

Energy Signup and view all the answers

What is the siderophore involved in iron acquisition in Pseudomonas aeruginosa?

Pyoverdine Signup and view all the answers

Why is the surface to volume ratio (S/V) important in limiting cell size?

To ensure proper nutrient uptake by allowing nutrients to diffuse into the cell efficiently Signup and view all the answers

How does the lack of a cell wall benefit Ultramicrobacteria?

It allows them to resist certain antibiotics like penicillin Signup and view all the answers

Why is Nanoarchaeum equitans not considered 'free living'?

Because it has a symbiotic relationship with another organism for survival Signup and view all the answers

What role does Nasuia deltocephalinicola play in its host's life cycle?

It synthesizes essential nutrients for the host Signup and view all the answers

What advantage does the small size of Mycoplasma genitalium provide in adaptation to nutrient-poor conditions?

Enhanced surface-area-to-volume ratio for efficient nutrient uptake Signup and view all the answers

Which bacterial cytoskeletal molecule is responsible for maintaining cell shape in many rod-shaped bacteria?

MreB Signup and view all the answers

Why are drug-resistant strains of Ultramicrobacteria becoming a significant concern?

Because they lack a cell wall, making them unaffected by many antibiotics Signup and view all the answers

What is the function of gas vacuoles found in aquatic, photosynthetic bacteria and archaea?

Provide buoyancy Signup and view all the answers

Which of the following is NOT a function of inclusion bodies in bacteria?

Energy production Signup and view all the answers

Which bacterial structure is responsible for orienting bacteria in Earth's magnetic field for aerotaxis?

Magnetosomes Signup and view all the answers

What is the main role of polyphosphate in bacterial cells?

Energy storage Signup and view all the answers

What is the primary function of capsules, slime layers, and S layers in bacteria?

Protection from environmental stress Signup and view all the answers

What is the main function of nucleoid proteins in bacteria and archaea?

Aid in DNA supercoiling Signup and view all the answers

How do plasmids differ from the chromosome in bacteria and archaea?

They replicate independently of the chromosome Signup and view all the answers

Which type of plasmids is capable of transferring genetic material between bacteria in direct contact?

Fertility-F-plasmids Signup and view all the answers

What distinguishes Col-plasmids from other types of plasmids?

Code for proteins that kill other bacteria Signup and view all the answers

In what way are nucleoid proteins different from histones?

Bacteria lack histones Signup and view all the answers

How do plasmids contribute to bacterial survival?

By conferring selective advantages such as drug resistance Signup and view all the answers

What is the main function of pili and fimbriae?

Mediate attachment to surfaces Signup and view all the answers

How do sex pili differ from fimbriae?

Sex pili are required for bacterial mating Signup and view all the answers

Bacterial Nucleoid and Plasmids

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