The answer is d (All of the Above). While vaccination is a way of introducing attenuated pathogens into the body to invoke an immune response and memory, ocassionaly, an infection of disease can also invoke immune response and memory after healing. This immune memory is mainly through memory T and B cells.
Answer:
mature egg
Explanation:
Ovulation is an event that occurs during the menstrual cycle of the female under the influence of luteinizing hormone (LH) and follicle-stimulating hormone (FSH). Ovarian follicles rupture and release the secondary oocyte ovarian cells from a vesicular follicle. After the release of an egg, it can be fertilized by the sperm during fertilization.
Answer:
The answer is 'B'- There is already soil present.
Explanation:
One of the biggest difference between primary succession and secondary succession is that primary succession occurs where there is zero availability of soil. In case of secondary succession, an already established community gets hampered due to <em>man made</em> activities or natural disasters like <em>flood, rain</em>, etc.
Since there is soil present in his farmland and vegetation is also available, it is the process of secondary succession.
The electron transport chain of the cellular respiration process produces maximum ATP.
There are three parts of cellular respiration:
Glycolysis, which produces 2 ATP.
Krebs cycle, which does not produce any ATP. It produces only the raw materials for ATP production.
Oxidative phosphorylation, which involves the electron transport chain that produces maximum ATP. It takes one NADH molecule via Channel 1 to produce 2.5 ATP and one FADH2 molecule via channel 2 to produce 1.5 ATP, for a total of 34 ATP.
