Hi i was wondering what a strong CER would be for the following scientific question:

Biology

1 answer:

Darina [25.2K]2 years ago

6 0

Answer:

hey im working on the same thing, i'm also very confused, but the genes preform different functions

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Someone new is preparing media for lab and adds buffers to the EMB agar that raise the pH to 7.8. The starting pH of EMB plates

mestny [16]

Answer and Explanation:

Eosin Methylene blue agar or EMB agar consists of sucrose, lactose, methylene blue and Eosin Y. These segments make it a differential medium which permits development of gram-negative microorganisms. Gram positive microscopic organisms develop inadequately on this medium.

It is particular for development of gram-negative microscopic organisms. It likewise separates between non-fermenting gram negative enteric microscopic organisms and lactose fermenting.

Lactose fermenting gram negative microscopic organisms use lactose to deliver corrosive which changes the shading to dull purple. Some of the lactose fermenter will exhibit dim provinces with green metallic sheen while different settlements with purple focus. Green metallic sheen is because of creation of solid acids.

In the event that the beginning pH is 7.8 rather than 6.9-7.3, the color won't change shading regardless of creation of acids. Consequently, it won't be conceivable to separate between lactose fermenter and non-fermenters.

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2 years ago

When did the mass extinction occur? (Name the era and period)

kherson [118]

Answer:

Explanation:

The first mass extinction is called the Ordovician-Silurian Extinction. It occurred about 440 million years ago, at the end of the period that paleontologists and geologists call the Ordovician, and followed by the start of the Silurian period. In this extinction event, many small organisms of the sea became extinct.

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2 years ago

What can you conclude about the crystals in Image A relative to the crystals in Image B? (2 points)

diamong [38]

Answer:I think it’s answer D-Were formed by water based solution , water makes everything more flat and smooth , I’m not sure though

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Protein digestion begins in the stomach where hydrochoric acid denatures protein and pepsin breaks down protein.

sergeinik [125]

Answer:

True

Explanation:

Check your books/notes/lectures to verify

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The first evidence of modern human traits, including increasing brain size and dependence on material culture shows up in:

Arturiano [62]

The first evidence of modern human traits, including increasing brain size and dependence on material culture shows up in Homo habilis. Even though they are species<span> of genus </span>Homo, they are not similar to people nowadays at all. <span>In </span>palaeoanthropology, these species were the first ones who left Africa and started to move and spread along Eurasia, which is one the main facts and characteristics of Homo habilis.

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