Answer:
1. B
2. A
3. D
Explanation:
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If both of those sexual partners are faithful to each other, and only have sexual relations with one another, then there isn't a high probability that either of them is going to get HIV. If they want to be sure, they should use protection, such as condoms, to prevent getting HIV through body fluids. And they should always be honest with each other in case one of them has that disease.
Phagocytosis is defined as a process of ingestion of bacteria or other infectious agent by phogocytes.
In human beings, the major and professional phagocytes are White Blood cells. These cells are specialized in attacking infectious agents that enters the body and kill them by engulfing them.
In protozoan, the phagocytosis starts with the ingestion step, in which an infection agent is taken up by protozoans and form a special vacuole like structure which secretes lysosomes enzymes that attack the agent and kill it and then removed from body by egestion.
Hence, there is not any significant difference between the process of phagocytosis in humans and protozoan; however the steps included vary in both.
Correct option b)depends on whether protein or dna is used as the hereditary material.
The real series of DNA on every of the chromosomes is precise due in component to recombination and the system of creating gametes, called sperm or egg cells.
Recombination is a system in which sections of DNA are traded among the chromosomes that make up a pair.Identical twins are born while one zygote (fashioned with the aid of using a sperm and an egg cell) splits into foetuses. That's why those uncommon instances are called monozygotic twins: the 2 kids are fashioned with the aid of using the identical gametes, inherit the identical genes, and consequently have same DNA check results.DNA replication is semi-conservative.
This approach that every new molecule of DNA incorporates one strand of the determine molecule and one complementary strand this is newly synthesized (daughter strand).
To learn more about Recombination here
brainly.com/question/1405662
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