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slega [8]
2 years ago
7

Please help asap!!!!

Biology
1 answer:
mina [271]2 years ago
3 0

Answer: In order to build a hypothesis, Joan should take an educated guess at what the effect of adding salt to the water will be on the water's boiling point. For example, the hypothesis may be,"The boiling point will increase". This hypothesis is one that can be verified or rejected via experimentation. The next step for Joan would be to set up an experiment to test this hypothesis. 


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A car moves with an initial velocity of 15 m s-1 and accelerates with constant acceleration 4 m s-
timofeeve [1]
Initia Velocity(u) :- 15m/s

Acceleration(a) :- 4m/s2

Time Taken(t) :- 50 Seconds

{ok a formula is there —->>> s = ut + 1/2 at2(it is ‘t’ square)….. now we will write like this and yeah don’t write this}

We Know,

s = ut + 1/2 at2

s = (15*50 + 1/2 *4*50*50)m

s= (750 + 5000)m

s = 5750 m

Therefore distance traveled is 5750 meters.

Hopefully this helps
5 0
2 years ago
Why is it important for a plant to be able to both stimulate and inhibit growth?
Yakvenalex [24]

Answer:

so that it can get the proper nutrients it needs.

Explanation:

6 0
2 years ago
When an enzyme is denatured, what happens to the enzyme?
nignag [31]
Change the pH and the enzyme<span> stops working. Increasing the temperature to 60°C will cause a permanent change to the shape of the active site. This is why </span>enzymes<span> stop working when they are heated. We say they have become </span>denatured<span>.</span>
7 0
3 years ago
Read 2 more answers
Restriction enzymes: A) act at the membrane to restrict the passage of certain molecules into the cell. B) are highly specialize
Elenna [48]

Answer:

C) are sequence-specific DNA endonucleases

Explanation:

Restriction enzymes represent a type enzyme capable of recognizing short nucleotide sequences to cut at specific restriction sites in the DNA, these sites are known as target DNA sequences. Some of the most commonly used restriction enzymes are <em>EcoRI</em>, <em>BamHI</em> and <em>HindIII</em>, isolated from <em>Escherichia coli</em>, <em>Bacillus amyloliquefaciens</em> and <em>Haemophilus influenza</em>, respectively. Restriction enzymes are endonucleases because these enzymes only cleave the phosphodiester bond within the DNA chain, conversely to exonucleases, which cleave nucleotides from the end of the polynucleotide DNA strand.

3 0
3 years ago
Did any alleles disappear from your population? if so, why? if not, why not? how does this relate to the most fit phenotype
dmitriy555 [2]
Alleles can disappear from a population through natural selection. This relates to the most fit phenotype because the breed with the desirable trait, or the most fit, will live and produce off spring. Eventually the less desirable trait and its corresponding allele will disappear after multiple generations pass. If the environment does not change alleles of non desirable traits will disappear. <span />
4 0
3 years ago
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