Answer:
We have just seen that pathogens constitute a diverse set of agents. There are correspondingly diverse ranges of mechanisms by which pathogens cause disease. But the survival and success of all pathogens require that they colonize the host, reach an appropriate niche, avoid host defenses, replicate, and exit the infected host to spread to an uninfected one. In this section, we examine the common strategies that are used by many pathogens to accomplish these tasks.
Explanation:
The first step in infection is for the pathogen to colonize the host. Most parts of the human body are well-protected from the environment by a thick and fairly tough covering of skin. The protective boundaries in some other human tissues (eyes, nasal passages and respiratory tract, mouth and digestive tract, urinary tract, and female genital tract) are less robust. For example, in the lungs and small intestine where oxygen and nutrients, respectively, are absorbed from the environment, the barrier is just a single monolayer of epithelial cells.
Skin and many other barrier epithelial surfaces are usually densely populated by normal flora. Some bacterial and fungal pathogens also colonize these surfaces and attempt to outcompete the normal flora, but most of them (as well as all viruses) avoid such competition by crossing these barriers to gain access to unoccupied niches within the host.
<span>The correct answer is C. Cells produced when the mutant cell divides. What is being described here is basically how cancer is spread. A single cell is enough to get the mutation and become corrupt in order to create many many new cancer cells that will eventually kill the person if not treated. Some are easily treatable, some incurable.</span>
The correct answer is AMDR or Acceptable Macronutrient Distribution Ranges.
DRI or Dietary Reference Intakes is defined as recommendent amount of energy, nutrients and other food components for healthy people to stay healthy and to prevent chronic disease risk, and deficiencies. DRI is set for each gender and age.
Answer:
<em><u>Ribosomes</u></em><em><u> </u></em><em><u>are</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>sites</u></em><em><u> </u></em><em><u>in</u></em><em><u> </u></em><em><u>a</u></em><em><u> </u></em><em><u>cell</u></em><em><u> </u></em><em><u>in</u></em><em><u> </u></em><em><u>which</u></em><em><u> </u></em><em><u>protein</u></em><em><u> </u></em><em><u>synthesis</u></em><em><u> </u></em><em><u>takes</u></em><em><u> </u></em><em><u>place</u></em><em><u>. </u></em>
Explanation:
<em><u>◇</u></em><em><u>hope</u></em><em><u> </u></em><em><u>it</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>helpful</u></em><em><u> </u></em><em><u>to</u></em><em><u> </u></em><em><u>you</u></em><em><u> </u></em><em><u>◇</u></em>
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Answer:
True
Explanation:
Listeria monocytogenes is a psychrophilic food-borne pathogen that is problematic for the food industry. Structures of Csps from psychrophilic bacteria have not yet been studied.
Listeria is not killed by freezing. Growth is arrested altogether, but normal growth will be resumed after thawing.
