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Oksanka [162]
3 years ago
5

You cant find a nucleus in bacteria you see under a microscope. why

Biology
2 answers:
Volgvan3 years ago
6 0
Because they are prokaryotic cells.
Setler [38]3 years ago
3 0
Because they are prokaryotic cells.
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Is the amplitude of each wave (P, ORS, T) always the same in different cardiac cycles?
Citrus2011 [14]

No the amplitude of each waves are different on different cardiac cycles.

<u>Explanation:</u>

  • The PQRST waves are used to represent the atrial and ventricular depolarization and repolarization.  These waves are reflected in ECG.  
  • In this as the series, p occupies the first place then QRS complex and at last T wave. In the QRS wave complex,  R wave is said to be the largest wave.  
  • The direction and amplitude of r wave depend on the electrical picture. The R wave represents the ventricles depolarization so it is the largest wave.
4 0
3 years ago
which of the following is a characteristic that could be applied to both living and non living things?
34kurt
They are both made up of organisms
5 0
3 years ago
C. At what height would the pomegranate have the same potential energy as the melon? (1 point)
zvonat [6]

Answer:

Given a set of assumptions which are given below, the height at which the pomegranate will have the same potential energy as the melon is 39.19 meters.

Explanation:

Gravitational Potential Energy refers to the acquired innate energy of an object due to its elevation above the surface of the earth.

This energy is the result of gravitational pull or force acting on the object.

In other to determine at what height a pomegranate and a watermelon will have the same potential energy we need to know the other factors in play.

Gravitational Potential Energy (E<em>p</em>)= <em>mgh</em>

Where m = Mass (kg)

            g  =  gravitational field strength (N/kg)

            h  = height (m)

           E<em>p </em>= gravitational potential energy ( <em>j </em>)

Let us assume that the

  • An average pomegranate weighs about 0.255146Kg
  • An average melon weighs about  10Kg
  • g is always constant at 9.8 N/kg

Note that melons weight much more than pomegranates.

   

So, let's calculate for the E<em>p </em>of the melon at the height of  1 meter

E<em>p</em> = 10 x 9.8 X 1 = 98<em>j</em>  

Using the above assumptions, we do a goal seek using Microsoft Excel. Please see the attached image.

Calculation shows that the Height (h/Meters) at which the E<em>p </em>of both veggies become equal is 39.19m

This can be verified by inserting the figure and multiplying it. It can also be calculated as follows:

That is

E<em>p = 98j</em>

<em>m = </em>0.255146kg

<em>g= 9.8kg</em>

<em>h=  ?</em>

98= 0.255146 x 9.8 x <em>h</em>

98 = 2.5004308<em>h (we divide both sides by </em>2.5004308 to make h the subject matter<em>)</em>

<em>h = 98 / </em>2.5004308

<em>h = 39.1932462198</em>

Which is approximately 39.19

4 0
2 years ago
Which one of the following does not have its outer orbit full?
gizmo_the_mogwai [7]

Answer:

Lithium

Explanation:

It is group I, not group 0.

7 0
3 years ago
A large population of laboratory rats was allowed to breed randomly for a number of generations. In this population, a dominant
ivann1987 [24]

Answer:

Frequency of heterozygous animals with agouti fur  is 42 %

Explanation:

As per the Hardy Weinberg's equation -

q^2 represents the frequency of population with phenotype expressed by homozygous recessive genotype

p^ 2 represents the frequency of population with phenotype expressed by homozygous dominant genotype

and 2pq represents the frequency of population with phenotype expressed by homozygous recessive genotype

Given -

q^2 = 0.49\\q = 0.7

As per first principle of Hardy Weinberg's equilibrium

p + q = 1

Substituting the value of q in above equation, we get -

p = 1- 0.7 \\p = 0.3

As per second  principle of Hardy Weinberg's equilibrium

p^2 + q^2 + 2pq = 1\\

Substituting the given values in above equation, we get -

0.09 + 0.49 + 2pq = 1\\2pq = 1 - 0.58 \\2pq = 0.42

Frequency of heterozygous animals with agouti fur  is 42 %

5 0
3 years ago
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