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<u>Statement no 1 is true</u>. A primary response occurs when an antigens invades the body for the first time. B cells and T cell are activated to generate a response.
<u>Statement no 2 is true</u>, the B cells form plasma cells and memory cells during a primary response.
<u>Statement 3 is false</u>. A secondary response is faster than the primary response. When a pathogen invades the body again, the immune system already has memory cells for this pathogen. These memory cells will generate a quick response.
<u>Statement no 4 is true</u>. During a secondary response, the plasma cells will make more plasma cells and will also make memory cells as the pathogen might invade again.
<em>Microwave sources include artificial devices such as circuits, transmission towers, radar, masers, and microwave ovens, as well as natural sources such as the Sun and the Cosmic Microwave Background. Microwaves can also be produced by atoms and molecules. <3</em>
I think that this is something you should, as the assignment states, "conduct independent research". meaning, this is something you have to do AT LEAST 90% yourself. my suggestion: start by googling 'yellowstone eruption' and go from there. I just don't want you to be in trouble with your teacher because you plagarizing.
The condition which explains this phenomenon is called incomplete dominance. Two different organisms (flowers) with two different phenotypes (red and white) will produce an offspring with a third phenotype. In this case, the third phenotype is the pink color. It is a blending of the parent traits.
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For example, delays in mitosis are often ascribed to 'activation' of the mitotic checkpoint, a descriptor that fails to recognize that the checkpoint by definition is active as the cell starts mitosis. Conversely, the completion of mitosis in the presence of misaligned chromosomes is often automatically interpreted to indicate a defective checkpoint, even though in the absence of critical testing alternative interpretations are equally likely. In this article, we define the critical characteristics of checkpoints and illustrate how confusion generated by the inconsistent use of terminology may impede progress by fostering claims that mean very different things to different researchers. We will illustrate our points with examples from the checkpoint that controls progression through mitosis
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