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True [87]
3 years ago
15

What is the main difference between purines and pyrimidines?

Biology
1 answer:
zubka84 [21]3 years ago
6 0
Purines are two ringed structures
pyrimidines are single ringed structures
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Grace [21]

Answer:

glycolysis, krebs cycle, and electron transport

4 0
3 years ago
50N of force is applied to a kg box. What will the acceleration be
Cloud [144]
<h2>ANSWER:</h2>

\huge\boxed{50\frac{m}{s^-2}}

<h2>_____________________________________</h2>

DATA:

Force = 50N

Mass of the Body = 1kg

Acceleration = ?

<h2>_____________________________________</h2><h3>SOLUTION:</h3>

By the second law of newton,

                            F = ma

Rearrange the equation,

                             a = \frac{F}{m}

Substitute the variables in the equation,

                             a = \frac{50}{1}

OR,

                              a = 50 m/s^2

<h2>_____________________________________</h2>

Best Regards,

'Borz'

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3 0
3 years ago
Does any one know how coal forms?
Setler79 [48]
Over a millions of years of animals and plants being crushed down in the ground<span />
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The drug colchicine inhibits the formation of spindle fibers during mitosis. If you treat dividing plant cells with colchicine,
vekshin1

Answer:

D

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During metaphase of cell division, the chromosomes line up in the metaphase plate and the spindle fibers from the poles extend and attach to the centromeres of the chromosomes. The spindle then contracts and pull different chromosomes to the opposite poles of the cell before the parent cell divides.   If spindle fibers do not form, then the chromosomes will not separate during anaphase.

Therefore, the final cell after mitosis will be a cell with double the number of chromosomes -because if you remember, during interphase, genetic material is replicated so each daughter cell can have its copy-. Due to quality control in the process of cell divisison, this cell will mostly undergo apoptosis, otherwise, it could develop into cancer.

8 0
3 years ago
What level of biological organization would a section of a lung be?
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Organ. An organ is a system of tissues that work together on a larger scale to do certain jobs within an animal's body. Examples of organs are the brain, heart and lungs. Anatomy is an example of a biology specialty concerned with this level.
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3 years ago
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