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aev [14]
3 years ago
7

What is most likely to increase both the nutrient levels and the bacterial content of lake water?

Health
1 answer:
ycow [4]3 years ago
5 0

Answer:

runoff from a nearby hog farm

Explanation:

Hog farming or pig farming is becoming common place today. Animal droppings are known to be rich in nitrates, phosphates as well as bacteria.

Nitrates and phosphates are essential nutrients required by algae in lake water. Hence, runoff from a hog farm supplies a lot of nutrients to lake water.

Similarly, the run off introduces enormous bacterial content that is contained in the droppings of these animals.

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Which of these molecules is not produced by glycolysis?
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Why does a person stop getting there period once they become pregnant
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Once your body starts producing the pregnancy hormone human chorionic gonadotrophin (hCG), your periods will stop. However, you may be pregnant and have light bleeding at about the time that your period would have been due.

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All cells share the following common components except
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Answer:

All cells share four common components: (1) a plasma membrane, an outer covering that separates the cell’s interior from its surrounding environment; (2) cytoplasm, consisting of a jelly-like region within the cell in which other cellular components are found; (3) DNA, the genetic material of the cell; and (4) ribosomes, particles that synthesize proteins. However, prokaryotes differ from eukaryotic cells in several ways.



Figure 1. This figure shows the generalized structure of a prokaryotic cell.

A prokaryotic cell is a simple, single-celled (unicellular) organism that lacks a nucleus, or any other membrane-bound organelle. We will shortly come to see that this is significantly different in eukaryotes. Prokaryotic DNA is found in the central part of the cell: a darkened region called the nucleoid (Figure 1).

Unlike Archaea and eukaryotes, bacteria have a cell wall made of peptidoglycan, comprised of sugars and amino acids, and many have a polysaccharide capsule (Figure 1). The cell wall acts as an extra layer of protection, helps the cell maintain its shape, and prevents dehydration. The capsule enables the cell to attach to surfaces in its environment. Some prokaryotes have flagella, pili, or fimbriae. Flagella are used for locomotion, while most pili are used to exchange genetic material during a type of reproduction called conjugation.

Eukaryotic Cells

In nature, the relationship between form and function is apparent at all levels, including the level of the cell, and this will become clear as we explore eukaryotic cells. The principle “form follows function” is found in many contexts. It means that, in general, one can deduce the function of a structure by looking at its form, because the two are matched. For example, birds and fish have streamlined bodies that allow them to move quickly through the medium in which they live, be it air or water.

A eukaryotic cell is a cell that has a membrane-bound nucleus and other membrane-bound compartments or sacs, called organelles, which have specialized functions. The word eukaryotic means “true kernel” or “true nucleus,” alluding to the presence of the membrane-bound nucleus in these cells. The word “organelle” means “little organ,” and, as we learned earlier, organelles have specialized cellular functions, just as the organs of your body have specialized functions.

Cell Size

At 0.1–5.0 µm in diameter, prokaryotic cells are significantly smaller than eukaryotic cells, which have diameters ranging from 10–100 µm (Figure 2). The small size of prokaryotes allows ions and organic molecules that enter them to quickly spread to other parts of the cell. Similarly, any wastes produced within a prokaryotic cell can quickly move out. However, larger eukaryotic cells have evolved different structural adaptations to enhance cellular transport. Indeed, the large size of these cells would not be possible without these adaptations. In general, cell size is limited because volume increases much more quickly than does cell surface area. As a cell becomes larger, it becomes more and more difficult for the cell to acquire sufficient materials to support the processes inside the cell, because the relative size of the surface area across which materials must be transported declines.



Figure 2. This figure shows the relative sizes of different kinds of cells and cellular components. An adult human is shown for comparison.

IN SUMMARY: COMPARING PROKARYOTIC AND EUKARYOTIC CELLS

Prokaryotes are single-celled organisms of the domains Bacteria and Archaea. All prokaryotes have plasma membranes, cytoplasm, ribosomes, a cell wall, DNA, and lack membrane-bound organelles. Many also have polysaccharide capsules. Prokaryotic cells range in diameter from 0.1–5.0 µm.

Like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes, but a eukaryotic cell is typically larger than a prokaryotic cell, has a true nucleus (meaning its DNA is surrounded by a membrane), and has other membrane-bound organelles that allow for compartmentalization of functions. Eukaryotic cells tend to be 10 to 100 times the size of prokaryotic cells.

Explanation:

please mark me as brainliest thank you

5 0
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Dental hygienist job template
leonid [27]

Answer:

Dental Hygienist job responsibilities include:

Conducting initial oral screenings

Cleaning and helping protect patients’ teeth (e.g. removing plaque or applying fluoride)

Educating patients of all ages on proper teeth care

Job brief

We are looking for a Dental Hygienist to help treat patients and promote good oral health practices.

What do Dental Hygienists do?

Dental Hygienist duties revolve around conducting initial patient screenings, cleaning teeth (e.g. removing plaque) and advising patients on oral health and preventative care. You’ll also help dentists decide treatments for teeth or gum diseases and handle dental emergencies.

Dental Hygienist skills

As a Dental Hygienist, you should be reliable and able to build trust with patients of all ages. You should have deep knowledge of relevant health and safety rules and a good eye for oral diseases and anomalies. If you also have a steady hand and great bedside manner, we’d like to meet you.

Responsibilities

Ensure patients feel as comfortable as possible before their examination

Sterilize dental instruments properly

Conduct initial mouth screenings and check oral health history

Identify conditions like gingivitis, caries or periodontitis

Clean and help protect patients’ teeth (e.g. remove plaque or apply fluoride)

Educate patients of all ages on proper teeth care (by demonstrating, for example, good brushing techniques)

Give instructions to patients after operations or other dental procedures

Take X-rays or dental impressions

Assist dentists with selecting appropriate treatments for various diseases (including oral cancer)

Maintain documentation and charts on each patient

Monitor supplies

Requirements

Proven experience as Dental Hygienist or similar role

In-depth knowledge of health and safety regulations in this profession (e.g. HIPAA)

Experience in preparing and maintaining dental equipment

Outstanding communication skills

A patient and friendly personality

Attention to detail

Stamina to meet the physical demands of the job

Diploma in Dental Hygiene; Master’s is a plus

Valid licence to practice

Explanation:

8 0
3 years ago
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