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yan [13]
3 years ago
13

What are modern prokaryotes

Biology
1 answer:
Bess [88]3 years ago
8 0
Modern Prokaryotes are sing celled organisms without complex organelles.

Hope I helped :-)
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Dog breeding is an example of natural selection T/F
sergejj [24]
False. It is not a natural process. Humans choose the desirable features of a particular dog and selectively breed it. These dogs have not adapted to the environment. This selection is mostly based on cosmetic reasons or other desirable features. These dogs prob wouldn't be able to survive in the wild
3 0
3 years ago
Describe the key steps in the semiconservative replication of DNA.
natka813 [3]

Answer:

Semi-conservative replication is meant for the description of DNA replication and it i s called so because parent DNA helix produces two copies of original DNA, one of which consist of original DNA.

The three main steps in DNA replication includes Initiation, Elongation and Termination.

In the initiation phase, replication begins at origin of replication where helicase enzyme breaks the hydrogen bonds between base pairs and tends to unwind the double helix where the topoisomerase stabilizes the newly formed single strand DNA. DNA polymerase allows elongation to occur in leading direction and catalyses the addition of new nucleotide to new single strands. short sequences of RNA called primers paired to template strands with the help of primase. replication of both strands occurs at the same time one in continuous (3'-5') and other in discontinuous (5'-3') direction, which are called leading strands. new nucleotides added in 3' end and moving to replication fork while discontinuous synthesis occur on parent strand (5'-3') called lagging strand and completed in segments called okazaki fragments. Then primase add primers ahead at 5' end of the lagging strand. DNA  polymerase ||| adds short sequences of nucleotides to the primer. During termination, exonuclease replaces DNA primer and DNA nucleotide and DNA ligase helps in making bonding between fragments and replaced nucleotide. Another exonuclease helps in proofreading the newly formed DNA and corrects the errors in sequences. At the end of the parent strands, telomeres are present which keeps on catalyzing by telomerase and completes, the formation of copies of parent DNA.

7 0
3 years ago
_____ believed that classical conditioning occurred because the conditioned stimulus became a substitute for the unconditioned s
Aleksandr [31]

Answer:

conditioned stimulus

Explanation:

the conditioned stimulus paired closely together in time

3 0
3 years ago
Creates clouds, snow, sleet, rain and hail
mote1985 [20]

Answer;

The Water Cycle

The water cycle creates clouds, snow, sleet, rain and hail. Precipitation, perspiration, etc.

Explanation;

-Water changes from a liquid to a gas form, called water vapor, through a process called evaporation. As liquid is heated by the sun's warmth, it changes into a gas form and rises in the atmosphere. In the air, water vapor cools and returns to a liquid form. This process is called condensation.

These water droplets cling together and form clouds. When the droplets become heavy enough, they fall to the ground as precipitation.


4 0
2 years ago
Read 2 more answers
Imagine you accidentally knocked a vase off a table and onto the floor. Describe the forces that would act on the vase before an
bagirrra123 [75]

The forces which acts on the vase before the fall include:

  • Force exerted by the table.
  • Force of gravity.
  • Drag

<h3>What is Force?</h3>

This is described as an influence which changes the motion of an object. The force exerted before motion is that which is exerted by the table , drag and force of gravity.

During fall, all other forces act except that exerted by the table thereby making it the most appropriate choice.

Read more about Force here nhttps://brainly.com/question/12970081

7 0
2 years ago
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