After the macrophage fails the Helper T Cell stimulates the B cells (create antibodies) if pathogen is extracellular and Cytotoxic T Cells (killer T cells, release perforin) if pathogen is intracellular. Once the pathogen is killed the B Cells create Memory B Cells and the Killer T Cells create memory T Cells.
<span>Hope that's helpful.</span>
Answer:
Compound Umbel.
Explanation:
Celery is more of an annual crop which is a herbaceous plant usually 60 to 120 cm high with white Flowers.
The Celery plant belongs to the Apiaceae and they are known to be mainly Annual.
Morphology or the shape of the Celery plant is that of a Compound Umbel, in which all Umbel inflorescences arises from a common point and appears to be at the same level.They change from
elongated axes (racemes and panicles) to flattened axes (corymbs and umbels) which results in inflorescences thereby making the flowers been arranged closely together. This close association encourages efficient pollination,and the extreme condensation of the inflorescences, as in the
head, gives rise to an inflorescence that appears
to be a single flower and example of such happen to be the sunflowers commonly found around us.
Answer:
A. Fishing for sea life that lives on or near the shore would be more difficult.
C. The California Grunion fish would have a hard time laying eggs.
Explanation:
The moon is an important aspect of Earth's existence. It influences the change of "ocean tides" <em>(high tide and low tide)</em>. If the moon were to suddenly disappear<em> it will present a number of problems. </em>
Firstly, the tides would<u> all remain the same</u><em> (small tides)</em>. They would also be <em>smaller </em>than the usual tide in the world today. Since the tide will be lower than usual, <u>the marine organisms will not survive living on or near the shore anymore. </u>This will make fishing for sea life in these areas more difficult.
The "California Grunion fish" normally lays its eggs along the <em>coastal areas,</em> which is <em>out of the water.</em> If the tide will be lower than usual, then they will have a hard time going to the coastlines for laying eggs.
So, this explains the answers.
Answer:
Flase
Explanation:
The cell cycle has two major phases: interphase and the mitotic phase. During interphase, the cell grows and DNA is replicated. Usually the cell will divide after mitosis in a process called cytokinetic in which the cytoplasm is divided and two daughter cells are formed.
hope this helps
have a great day/night :)
Answer:
Renewable Energy Resources.
Explanation:
Unlike fossil fuels which cannot be recovered when destroyed, these sources of energy can be recovered by a means of recycling . Recycling here reduces solid wastes which is one of the causes of land pollution.
Hydroelectric schemes can only be built in mountain regions where rainfall and rivers are plentiful which involves upset of aquatic ecosystem. This poses a dangerous pollution problem though.
Wind generators and solar panels are not very efficient energy producers. However, future schemes for producing solar energy via solar satellites are promising.
