The given question says that a student has constructed a model of cellular transport using fences and several gates.
This model can be used to demonstrate the cellular transport.
The gates of the fences can be supposed as the protein pumps and the other fence demonstrates the lipid bilayer.
Let’s suppose in the fence, there are many cattles, and outside, there are less cattles, but the student open the gate and bring more cattles inside the fence. In this case, the transport of the cattles is similar to the active transport of the molecules using protein pumps. At cellular level, the energy for the active transport is provided by ATP molecules.
Now, let’s say, the student wants to feed the cattles with some nutrition rich food, which can help in maintaining the health of the cattles. The student fills his car with the cattle food and he enters inside the fence through gates. In this case, the food was not present in the fence, but was abundant in the outside environment, so, the diffusion would occur. But food cannot come self, without help of others, so, the movement is facilitated by the car, as it is done by the carrier proteins. Hence, it is an example of facilitated diffusion.
Answer:
The correct option is b. DNA ligase
Explanation:
DNA ligase is an enzyme that joins DNA fragments. If two DNA fragments or molecules have complementary ends, the ligase can join them together to form a single and intact DNA molecule, without interruptions. This is because the ligase enzyme seals the space between the molecules to form a single DNA fragment.
The others enzymes have different functions:
DNA helicase is characterized by separating DNA from double strands into single strands and acts in DNA replication.
ATP methylase plays an important role in DNA replication when determining the beginning of replication that has already been replicated or not.
DNA polymerase is an enzyme that is responsible for catalyzing the polymerization of the new strand of DNA during the replication of this molecule.
Vesicles transport newly synthesized proteins to the Golgi apparatus. After the Golgi apparatus modifies the proteins, vesicles transport the modified proteins to the cell membrane, where they are released.
Hope this helps!
-Payshence
The Linnaean system added more stories onto hierarchy the of complicatedness that Aristotle developed.
The Linnaean system of type of taxonomy was developed by Swedish naturalist named Carolus Linnaeus in the mid 1700. He created a way to organize and name species. He based his type on physical traits of organisms and uses binomial nomenclature to identify organisms. The seven main level of classification are kingdom, phylum, class, order, family, genus and species.
<h3>Why is the Linnaean system important?</h3>
The Linnaean system is critical because it led to the use of binomial nomenclature to recognize each species. Once the system was assumed, scientists could communicate without the use of deceiving common names. A human being became a partner of Homo sapiens, no matter what terminology a person spoke.
To learn more about Linnaean system, refer
brainly.com/question/9880750
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