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3 years ago

How does the process of hearing differ between a person who is awake and a person who is asleep?

1 answer:

8 0

By a person asleep is by the DONT make noise or snore and someone awake you can usually see their light on or they are noises from the other room

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How does water act as a buffer and why is it not a good one

yawa3891 [41]

Water doesn't have a large Ka (acid dissociation constant), hence the equilibrium of

H2O ⇌ H+ + OH-

lies on the far left.

therefore a container of water wouldn't have many H+ and OH- ions floating about.

There WOULD be a very very very small concentration and H+ and OH- in it, since a value of Ka means that it does ionise in itself, but on the whole there would be MORE water molecules floating about. This is why water acts as a very poor buffer.

You need the acid AND the conjugate base (salt) for a buffer to work.

8 0

4 years ago

3. Round shells is incompletely dominant to square shells, the heterozygous combination is a pointed shell. Smelly

matrenka [14]

Answer:

2/16 rounded not smelly females, RRX+X-

2/16 pointed not smelly females, RrX+X-

2/16 rounded smelly females, RRX-X-

2/16 pointed smelly females, RrX-X-

2/16 rounded not smelly males, RRX+Y

2/16 pointed not smelly males, RrX+Y

2/16 rounded smelly males, RRX-Y

2/16 pointed smelly males, RrX-Y

Explanation:

<u>Available data</u>:

RR round shell
rr square shell
Rr Pointed shell
X+ is dominant and codes for not smelly
X- is recessive and codes for Smelly

Cross: A pointed smelly shelled male with a round heterozygous non-smelly female

Parentals) Rr X-Y x RRX+X-

Gametes) RX-, RY, rX-, rY

RX+, RX+, RX-, RX-

Punnett square) RX- rX- RY rY

RX+ RRX+X- RrX+X- RRX+Y RrX+Y

RX- RRX-X- RrX-X- RRX-Y RrX-Y

F1) 2/16 bivalves are expected to be rounded not smelly females, RRX+X-

2/16 bivalves are expected to be pointed not smelly females, RrX+X-

2/16 bivalves are expected to be rounded smelly females, RRX-X-

2/16 bivalves are expected to be pointed smelly females, RrX-X-

2/16 bivalves are expected to be rounded not smelly males, RRX+Y

2/16 bivalves are expected to be pointed not smelly males, RrX+Y

2/16 bivalves are expected to be rounded smelly males, RRX-Y

2/16 bivalves are expected to be pointed smelly males, RrX-Y

7 0

3 years ago

How would a change to the sequence of nucleotides in a DNA segment affect the mRNA transcribed from the DNA?

Mama L [17]

Answer:

It would change the nucleotide sequence of the transcribed mRNA

Explanation:

During the process of transcription, a DNA template is used to synthesize a mRNA molecule. The nucleotides in the DNA molecule undergo a complementary base pairing to form the nucleotides on the mRNA. This means that the order of sequence on the DNA determines the order of sequence on the mRNA.

In a case where the nucleotide sequence of a DNA segment changes in the process of MUTATION, the sequence of nucleotides in the mRNA strand will also change. For example, if sequence: ATT on the DNA produces UAA on the mRNA, a change to AAT on the DNA will cause the mRNA sequence to change to UUA.

4 0

3 years ago

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Primary succession can occur in which habitat?

777dan777 [17]

Primary succession occurs<span> in essentially lifeless areas or regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. Hope this answers the question.</span>

3 0

3 years ago

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What is the scientific name of ERI silkworm

Tju [1.3M]

Answer:

Samia Cynthia

Explanation:

5 0

3 years ago

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