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Molodets [167]
3 years ago
14

Which step in transcription occurs first

Biology
2 answers:
Svetradugi [14.3K]3 years ago
9 0

Transcription Initiation. The first step in transcription is initiation, when the RNA pol binds to the DNA upstream (5′) of the gene at a specialized sequence called a promoter (Figure 2a). In bacteria, promoters are usually composed of three sequence elements, whereas in eukaryotes, there are as many as seven elements ...

Blababa [14]3 years ago
5 0

Initiation. The DNA molecule unwinds and separates to form a small open complex. ...

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What evolutionary development allowed plants to grow tall? see concept 29.3 (page 626)?
aivan3 [116]
If your choices are the following:
<span>A. rhizoids
B. sporophylls
C.leaves
D.the waxy cuticle
E. lignified vascular tissue

Then the answer is E.</span>
4 0
3 years ago
Over time, emerging technologies become _____.
mafiozo [28]

Answer:

I think the answer is the first option, more reliable and harder to use.

Explanation:

I think this because technology is expensive and the most reliable thing we have right now so the other options don't make sense.

4 0
3 years ago
Read 2 more answers
How is neuron like and different from a blood cell
jok3333 [9.3K]

Answer:

Neurons are similar to other cells because neurons have a cell membrane, a nucleus, cytoplasm, mitochondria, organelles, and carry out processes such as energy production.

Neurons differ from other cells because neurons have extensions called axons and dendrites, they communicate with each other through an electrochemical process which we just talked about, and neurons have specialized structures such as synapses and chemicals such as neurotransmitters.

Explanation:

there you go

5 0
3 years ago
Which of the following units could be used for the average speed of an object? A. miles per centimeter (mi/cm) B. meters per sec
Vesna [10]
<h3>Answer:</h3>

B] Meters per second

<h3>Explanation:</h3>
  • We know that speed = distance ÷ time. So hour per km and second per Mile cannot be the unit of average speed.
  • Now the remaining options are <u>miles per hour</u> and <u>Meter per second.</u>

  • In comparison with both of these;

we know that metre per second is the SI unit of average speed and hence the answer is <u>meters</u><u> per </u><u>second</u>.

3 0
3 years ago
A 58 year old lawyer presents in the emergency room with headache, irritability, generalized muscle pain and uncontrollable back
Lerok [7]

Answer:

A. What is your diagnosis here?

As per symptoms and incident of puncturing left arm with nail from an old barn indicates it can be infection of Clostridium tetani causing disease tetanus.

When such kinds of wound occurs, there should be injection of tetanus immunoglobulin (TIG) immediately. This injection contains antibodies against Clostridium tetani which can kill the microorganism. It should be injected as soon as possible. But this is short term immediate medication.

B. What is the proper treatment of this problem?

For the treatment antibiotic penicillin, metronidazole or tetracycline can be given, it prevents multiplication of bacteria and production of neurotoxin from bacteria. these neurotoxins are responsible for muscular spasms. Along with antibiotic some anticonvasculants, muscle relaxants can be given to reduce spasms, anxiety.

C. How could this have been prevented?

This infection can be prevented by giving its vaccine in childhood itself. Vaccine is given in the form of DTaP vaccine (diptheria, tetanus toxoid, acellular pertusis). It is given in 5 shots. It is given in the arm or thigh when child is at 2 month age, 4 month age, 6 month age, 15 to 18 month age, 4- 6 years of age.

Explanation:

4 0
3 years ago
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