Hydrogen is usually found on earth.

Analysis of the second swab has confirmed that the causative organism is Streptococcus pyogenes, a gram-positive organism. Imagi

Alisiya [41]

Answer:

D. purple, spherical-shaped organisms arranged in chainlike formation

Explanation:

Streptococcus pyogenes is a gram positive coccus. Coccus implies that it has a spherical shape.

Gram positive organisms like streptococcus pyogenes take up purple stain on gram staining whereas gram negative organisms like E. coli take up pink stain on gram staining.

Further more, streptococcus pyogenes is arranged in chains or pairs. Unlike staphylococcus which is arranged in clusters.

Coming back to answer choices,

A. pink, rod-shaped organisms arranged in pairs

It is the incorrect choice as Streptococcus pyogenes is gram positive and they appear blue on gram staining.

B. purple, spherical-shaped organisms arranged in grapelike clusters

This is the incorrect choice. Although Streptococcus pyogenes appears blue on gram staining but it is arranged in chains like a beaded necklace. Purple, spherical-shaped organisms arranged in grape-like clusters is typical appearance of Staphylococcus.

C. pink, spherical-shaped organisms arranged in chainlike formations

It is incorrect as Streptococcus pyogenes appears blue on gram staining as it is gram positive.

D. purple, spherical-shaped organisms arranged in chainlike formation

This is the correct choice and describes typical appearance of Streptococcus pyogenes.

6 0

3 years ago

A nurse cares for a client with a stage ii pressure ulcer on the right hip. the nurse anticipates finding what type of appearanc

Gnom [1K]

The nurse should anticipate finding broken skin with a blister. Stage two pressure ulcers are caused by leg injuries and can last awhile if they do not heal on their own or are not treated by a doctor. This ulcer causes skin loss and can grow larger if it becomes a serious problem.

5 0

3 years ago

Darwin's job on the Beagle was to observe and collect specimens wherever the ship went ashore

Kazeer [188]

Answer:

true

Explanation:

That's why he returned to the UK with containers full of specimen. He was a naturalist, thus this was his job.

hope this helped, stay safe :)

4 0

3 years ago

In this food pyramid, about __________ of the available energy is transferred to each level.

TiliK225 [7]

About 10 percent is transfered.

5 0

3 years ago

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Because the Earth is tilted on its rotational axis, both the Northern and Southern Hemispheres experience seasons. As the Earth

Tju [1.3M]

Answer:

Because the Earth is tilted on its rotational axis, both the Northern and Southern Hemispheres experience seasons. As the Earth revolves around the Sun, the angle at which sunlight hits each of these hemispheres changes. The Sun appears at its highest point in the sky and for a brief period of time each day during summer than it does during winter.

8 0

3 years ago

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