1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
LenKa [72]
3 years ago
9

Which statement about the DNA replication process in prokaryotes is true?

Biology
2 answers:
spayn [35]3 years ago
8 0

the answer is definitly D.)

PtichkaEL [24]3 years ago
6 0

The right answer is D.

The origin of replication (also called "ori") is a unique DNA sequence that allows the initiation of replication. It is from this sequence that unidirectional or bidirectional replication begins.

Prokaryotes have a single circular DNA molecule and therefore usually only one origin of replication. Depending on the Archaea species, there may be one or more origins of replication by replicon1. Eukaryotes have multiple origins of replication on each chromosome.

The origin of replication of Escherichia coli is known as oriC and extends over 245 base pairs (bp). It contains upstream of a 13 bp sequence (GATCTNTTNTTTT) repeated three times, and further downstream, four 9 bp (9mer) sequences that are in either orientation. Proteins, called DnaA, will bind to the repeated 9 bp sequences. The DNA will then wrap around the protein complex of DnaA. This conformational change in DNA results in the opening of the DNA double helix at the adenine and thymine-rich 13 bp repeat which allows enzymes and other factors to bind to dissociated strands and start replication.

You might be interested in
Name one source of energy which was used for<br>Chemical combination in primitive atmosphere<br>​
notka56 [123]

Answer:

Explanation:

Considering the atmosphere of the primitive earth to have contained water vapor, carbon dioxide, carbon monoxide, methane, and ammonia and/or nitrogen, then in the presence of an energy source, such as sunlight or lightning, a number of small molecules like hydrogen cyanide, HCN, are formed.

6 0
3 years ago
Sustitución de una es estructura que el animal ha perdido​
Ostrovityanka [42]

Answer:

we'll need a translator to get what you expressing

3 0
3 years ago
How can invasive species alter an ecosystems food web?
Harlamova29_29 [7]

Invasive species can either replace an organism from the ecosystem food web or replace it.  

Explanation:

  • Invasive species are non-native species which can be animals, plants, micro-organisms, fish, etc. they are very much threatening to the native species and ecosystem food web.
  • Invasive species are spread by humans mostly, it happens unintentionally when people travel and all. Even climate change could be a reason for its spread.
  • So, it becomes threatening to native species because when you introduce it into a new ecosystem, it does not have a predator or control. It grows aggressively and takes over the resources for the native species.
4 0
3 years ago
Compare transcription initation in prokaryotes and eukaryotes.
Sever21 [200]

Answer:

Prokaryotes only contain three different promoter elements: -10, -35 promoters, and upstream elements. Another main difference between the two is that transcription and translation occurs simultaneously in prokaryotes and in eukaryotes the RNA is first transcribed in the nucleus and then translated in the cytoplasm.

Explanation:

3 0
3 years ago
Plz help due in 5 min
Sedaia [141]

Answer:

less than

Explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • What charaterristics do green algae share with plants?
    7·1 answer
  • A researcher knows the geographic range of a population of butterflies. given only this information, what else can she deduce ab
    9·1 answer
  • our nervous system is organized into two broad anatomical divisions: the central nervous system (consisting of the brain and spi
    6·1 answer
  • How would the membrane shown in the transparency behave if its fatty acid tails consisted mostly of unsaturated fatty acids?
    5·1 answer
  • Which is an example of an abiotic limiting factor?
    7·1 answer
  • N the savanna, a lion would be the ____________ while the water buffalo would be the
    13·2 answers
  • What is a centromere
    6·2 answers
  • Which codon codes for start and methionine (MET)? <br>A- AAC<br>B-AGU<br>C- UGA<br>D- AUG​
    7·1 answer
  • Jacob is studying cell organelles. He knows that light energy drives photosynthesis. Look closely at the diagram below.
    11·2 answers
  • What are some of the posible signals of male quality in widowbirds and what information might they convey? What are the females
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!