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son4ous [18]
3 years ago
14

Are harbor seals a K-selective or R-selective species?

Biology
1 answer:
Semenov [28]3 years ago
4 0

Answer:

They are K-selective

Explanation:

Because harbor seals are mostly captured by humans and are very endangered which are most likely to not survive for the long-term.

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What is the best explanation if the gel of your PCR product shows smeared bands of multiple sizes? Select one:
trapecia [35]

Answer:

e. None of the above

Explanation:

For me as a Researcher, the reason could be increased Concentration of your DNA sample which you are using as your template. Try to decrease the concentration of DNA (up to 100 ng per reaction is enough and can increase up to 200 ng). so the reason for getting non specific bands is increase concentration of DNA  which results in non specific amplification and also degradation of DNA in the reaction which you can see in your gel electrophoresis results.  

i always corrected my results using the same technique that is lowering the concentration of DNA between 100 and 200 ng per single reaction of PCR.

8 0
3 years ago
In the figure below, ΔMNO≅ΔPQR.What is the measure of ∠P? Show your work and explain your reasoning.
Juliette [100K]

Answer:

\huge\boxed{\sf P = 79.5\°}

Explanation:

<u>Given that:</u>

ΔMNO ≅ ΔPQR

That means

M ↔ P

N ↔ Q

O ↔ R

So,

∠P ≅ ∠M

Given that P = 3x + 20.4 and M = 5x - 19

3x + 20.4 = 5x - 19

Add 19 to both sides

3x + 20.4 + 19 = 5x

3x + 39.4 = 5x

Subtract 3x to both sides

39.4 = 5x - 3x

39.4 = 2x

2x = 39.4

Divide both sides by 2

x = 19.7

<u>Given that:</u>

P = 3x + 20.4

P = 3(19.7) + 20.4            (x = 19.7)

P = 59.1 + 20.4

P = 79.5°

\rule[225]{225}{2}

Hope this helped!

<h3>~AH1807</h3>
8 0
2 years ago
Why is it beneficial for an organism to have its tissues near its optimal temperature? List various functions or activities that
kykrilka [37]

Explanation:

Why is it beneficial for an organism to have its tissues near its optimal temperature? List various functions or activities that may be affected if the body temperature deviates too far from the temperature optimum (which functions or activities are mediated by proteins)?

a.) Muscle-movements

b.) Digestion of food

c.) Growth and development

Just about every aspect of an organisms daily functions are governed by the actions of proteins, be they structural proteins that determine cell shape, motor-protein that move vesicles inside the cell or allow muscle cells to contract, or be they enzymes that catalyze the vast majority of chemical reactions a cell has to engage in.

It turns out that every living organism gives off some heat. The difference between endotherms and ectotherms is merely the rate at which this heat is produced by the organism.

In fact, even plants and bacteria produce some heat as they go through their daily lives. This is evident in early spring, when the earliest spring flowers manage to thaw themselves through a solid ice layer, or when you overturn a compost heap on a crisp fall day in which bacteria decomposers are very active you will see steam rising from the pile.

What source have we already discussed that can produce this heat given off by organisms to their environment?

a) negative delta G of energetically coupled reactions.

Endotherms take advantage in particular of cellular respiration to ramp up that heat given off from energetically coupled reactions due to the Second Law of Thermodynamics.

As a consequence, endotherms maintain highly elevated rates of cellular respiration compared to ectotherms

b.) lowering of activation energy by an organism's enzymes

6 0
3 years ago
A "control group" is used in an experiment to
Deffense [45]
Act as a baseline to compare your data to
4 0
3 years ago
Omg pls help me I’m 2 hours late on it pls ASAP
djyliett [7]

Answer:

1.) True

2.)true

3 false

4 true

5 true

6 false

Explanation:

love you

3 0
3 years ago
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