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Drupady [299]
3 years ago
15

Which three structural zones overlap with the mantle ?

Biology
1 answer:
babymother [125]3 years ago
6 0

lithosphere, asthenosphere, mesosphere

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A scientist observes an enzyme polypeptide chain arranged in spiral turns that rise upward and are held in place by hydrogen bon
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If a scientist observes an enzyme polypeptide chain arranged in spiral turns that rise upward and are held in place by hydrogen bonds he/she is looking at a tertiary structural arrangement. 
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3 years ago
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For a science fair project, two students decided to repeat the Hershey and Chase experiment, with modifications. They decided to
umka21 [38]

Answer is (E) : Amino acids (and thus proteins) also have nitrogen atoms; thus, the radioactivity would not distinguish between DNA and proteins.

Let me explain you why. Hershey and Chase conducted their experiment to show what is the genetic material that passes from one generation to another generation. Is it protein or DNA? For explaining this, they allowed the virus to grow in the presence of two different radio active elements.

In one set they grew viruses in the presence of P-32 radio-active element  

In another set they grew viruses in the presence of S-35 radio active element.

The reason why they choose these two radio-active element was, phosphorus is present in DNA but not in proteins and similarly sulphur is found in proteins but not DNA.

These viruses were allowed to infect bacteria and the later was observed to be radio-actively labelled with P-32 but not S-35. This clearly showed that DNA is the genetic material which was passed from virus to bacteria.  

Now if you choose Nitrogen for labeling, it won't help you in getting any conclusion since nitrogen is present in both proteins and DNA.

8 0
3 years ago
Fill in the blanks. When the northern hemisphere experiences _________, the southern hemisphere experiences __________.
viva [34]

Answer:

Number 3 is the answer most likely. This is because both hemispheres are an equal distance from the equator.

3 0
3 years ago
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Which of the following is NOT a type of neuron?
xxTIMURxx [149]
I believe its D. response neuron.

Hope this helps!

Love, Grace-
8 0
3 years ago
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The source of passive immunity that a mother gives to her infant through breast milk is known as __________.
maks197457 [2]

Answer:

The correct answer is- IgA

Explanation:

There are five types or class of antibodies found in the human body these are IgA, IgM, IgD, IgE, and IgG. Out of these five class IgA antibody is found in an abundant amount in the mother's milk or colostrum.

Infant take this antibody from the mother through breastfeeding which protects the infant from may pathogenic microbes. The immunity in which antibodies are taken from outside is called passive immunity.

Therefore the passive immunity source that is given by the mother to baby through breast milk is called IgA.

3 0
3 years ago
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