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choli [55]
3 years ago
10

How does ultraviolet light result in the formation of thymine dimers?

Physics
1 answer:
murzikaleks [220]3 years ago
3 0
Pyrimidine dimers<span> are molecular lesions </span>formed<span> from </span>thymine<span> or cytosine bases in DNA via photochemical reactions. </span>Ultraviolet light<span> induces the </span>formation<span> of covalent linkages by reactions localized on the C=C double bonds. In dsRNA (double-stranded RNA), uracil </span>dimers<span> may also accumulate as a </span>result<span> of </span>UV<span>radiation.</span>
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Place the following in order, from closest to furthest away:
Ganezh [65]

The order from closest to furthest away include the following:

  • The  Kuiper Belt
  • The  scattered disc
  • The Oort cloud.

<h3>What is Kuiper belt?</h3>

This is the region which ends around 50 AU from the Sun and has the presence of the scattered disc in its outer surface.

The  Oort cloud has a distance of between 2,000 and 10,000 thereby making it the farthest which is why the correct order is B, A and C.

Read more about Kuiper belt here brainly.com/question/3955749

7 0
2 years ago
A seesaw has an irregularly distributed mass of 50 kg, a length of 3.0 m, and a fulcrum beneath its midpoint. It is balanced whe
Simora [160]

Answer:

d_{CM} = 0.78 m

Explanation:

given,

mass of seesaw,m= 50 kg

length of seesaw, d = 3 m

mass of person on one end, m₁ = 60 Kg

mass of person on another end, m₂ = 86 Kg

position of center of mass = ?

System is in equilibrium

Clockwise moment is equal to anticlockwise moment.

m_1 g\dfrac{d}{2} + m g d_{CM} = m_2 g \dfrac{d}{2}

m_1 d + 2 m d_{CM} = m_2 d

d_{CM} = \dfrac{m_2 d-m_1 d}{2 m}

d_{CM} = \dfrac{86\times 3 - 60\times 3}{2\times 50}

d_{CM} = 0.78 m

hence, the position of center of mass from the fulcrum is 0.78 m on 60 Kg mass side.

4 0
3 years ago
A girl is sitting in a sled sliding horizontally along some snow (there is friction present).
Over [174]

Answer:

159 N

Explanation:

The force of friction, Fr is a product of coefficient of feiction and the normal force. Therefore, Fr=uN where N is the normal force and u is coefficient of friction. Here, we have two coefficients of friction but since it is sliding, then we use coefficient of kinetic energy. Substituting 0.25 for u and 636 N for N then

Fr=0.25*636=159 N

Therefore, the force of friction is equivalent to 159 N

4 0
3 years ago
A force of 5.00 N to the left causes a 1.35 kg book to have a net acceleration of 0.76 m/s2 to the left. What is the frictional
Nuetrik [128]

Answer:

4.0 N

Explanation:

Sum the forces in the x direction:

∑F = ma

F − Fr = ma

Fr = F − ma

Fr = 5.00 N − (1.35 kg) (0.76 m/s²)

Fr = 4.0 N

8 0
3 years ago
What are derived quantities? <br><br> How do we get derived units?
Eddi Din [679]

A derived quantities is terms of the 7 base quantities via a system of quantity equations which are called SI derived units.

5 0
3 years ago
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