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Elis [28]
3 years ago
9

Please answer fast, What do scientists think about the common ancestor of whales and hippos?(1 point)

Biology
2 answers:
bija089 [108]3 years ago
6 0

Answer:

the answer is A

PtichkaEL [24]3 years ago
3 0

Answer:

I think your answer would be the animal lived millions of years ago.

Hope I helped!

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When phospholipids are mixed with water, they spontaneously rearrange themselves to form the lowest free-energy configuration

Explanation:

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You decide to repeat the Meselson-Stahl experiment, except this time you plan to grow the E coli cells on light 14N medium for m
Elanso [62]

Answer:

1.A single band of intermediate density.

Explanation:

According to semiconservative model of DNA replication, the two strands of one DNA molecule separate at the time of replication and each strand acts a template for a new strand. So, the resulting new DNA molecule has one old strand and one new strand.

Here, the E coli cells were grown originally in 14N medium. So all the DNA molecules had 14N strands. When they were transferred to a 15N medium, only 15N was available then for further replications. In the first round of replication in new medium, all the old 14N strands (14N14N) separated and formed a new strand each using 15N. Hence all the resulting DNA molecules had one 14N strand and one 15N strand (14N15N).

Since 14N is of lighter density and 15N is of heavier density, 14N15N strands will give band of intermediate density. Since after one round of replication all DNA molecules will be 14N15N, there will be only one band of intermediate density.

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3 years ago
Is coronavirus good for the environment? 1-2 sentences.
devlian [24]

Answer:

No, it is not good for the environment.

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It has made the biggest change in our economy and many people are buying a large stock of items to keep in their homes because they think the stores close for a certain week or day because of the virus, so just in case for them, they have to quickly run into the store and get all of the items they could find so they can last while they are at their homes. And there are people that have the virus and if they touch something like an object or a person, the bacteria can stick onto the object or person, and when someone touches the object and does not know about the virus being there, the person can get really sick and probably have initial flu-like symptoms, such as fever, coughing, breathing difficulties, fatigue, and myalgia. It is best that you are washing your hands and that you stay away from sick individuals. And that you do not go out too often and stay safe at your house.

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