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Tatiana [17]
2 years ago
9

In the example, no RNA is made during the process. What would need to occur for lacZ to be expressed in mRNA?

Biology
1 answer:
vazorg [7]2 years ago
5 0

Answer:

Binding the rna polymerase to the promoter sequence

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A 6,000 kg train car is moving to the right at 10 m/s and connects to a 4,000-kg train car that wasn't moving. What is the veloc
SIZIF [17.4K]

6 m/s

This type of collision is a <u>Inelastic collision </u>

Explanation:

We begin by finding the momentum of the initial train car;

Remember that momentum is given by the formulae mass (kg) * velocity (m/s)

Therefore;

Momentum = 6000 * 10

= 60,000 kg⋅m/s

The other car has zero momentum because;

4000 * 0

= 0

When the two train cars collide, the total momentum will be;

60,000 + 0 = 60,000

Therefore to find the velocity, well use the same formulae;

p = mv  whereby;

p – momentum

m – mass

v – velocity

60,000 = (6000 + 4000) * v

v = 60,000 / 10,000

v = 6

= 6 m/s

This is an elastic collision because we are assuming that no energy is lost in the collision. Most collisions, however, are not elastic but rather inelastic. In inelastic collision some of the kinetic energy is lost to the environment in some other form of energy such as heat energy.

Learn More:

For more on elastic collisions check out;

brainly.com/question/10864123

\brainly.com/question/12201392

#LearnWithBrainly

7 0
3 years ago
Select all of the answers that apply.
Paraphin [41]
The four laws or principles that are involved with the study of Stratigraphy are the following:
1. Principle of original horizontality
2. Law of superposition
3. Law of crosscutting relationships
4. Principle of Lateral Continuity
5. Principle of Faunal Succession 
6. The Law of inclusions
Therefore, the correct answers would be 1, 2 and 4. Hope this answer helps.
3 0
2 years ago
Why is the cell membrane important?
andrew11 [14]

Answer:

The answer is A. The cell membrane provides rigid support and protection for the cell

Explanation:

The semipermeable structure that surrounds the cell helps the cell live in different environments

4 0
3 years ago
in a few generations, this population of beetles changed. which is the most likely explanation for the change
astraxan [27]
Change in the external Environment may resulted in the changing in the population of beetles.
5 0
3 years ago
The giant short-faced bear disappeared completely from North America about 12 million years ago due to competition from smaller
Olin [163]
The answer is C hope it helps 
7 0
3 years ago
Read 2 more answers
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