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otez555 [7]
3 years ago
7

12. What do archaea look like?

Biology
2 answers:
statuscvo [17]3 years ago
3 0

Answer: Archaea are tiny, usually less than one micron long (one one-thousandth of a millimeter). Even under a high-power light microscope, the largest archaeans look like tiny dots.

Explanation:

Bogdan [553]3 years ago
3 0

Answer:

Archaea look like tiny dots.

Explanation:

Archaea are tiny, usually less than one micron long.

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The difference in elevation between the highest and lowest contour lines on a topographical map is called: a. contour interval c
Andrew [12]

The right option is a. contour interval

The difference in elevation between the highest and lowest contour lines on a topographical map is called contour interval.

A contour interval is the vertical distance between the two contour lines (highest and lowest) in a topographical map. The contour interval is usually stated explicitly on the right-hand lower part in every map. 20 feet for a 1:24,000 map scale is the frequently used contour interval and different contour intervals is available for different maps.  


7 0
3 years ago
Read 2 more answers
24. How are vaccines used to keep people healthy?
riadik2000 [5.3K]

A vaccine can help keep people healthy and protect them from a certain virus. For example people in the United States get the flu shot when they get this shot the vaccine wont magically get rid of the virus but rather help them fight it off and protect them in the future if they keep up to date getting the vaccine

6 0
3 years ago
What's the difference between nitrification and dentification
Y_Kistochka [10]

Difference between nitrification and dentrification

Explanation:

Nitrification and denitrification are part of the nitrogen cycle

Nitrification is the process of conversion of ammonium to nitrate by nitrifying bacteria like Nitrobacter and Nitrosomonas

Denitrification is the process of reduction of nitrate to nitrogen gas by denitrifying bacteria like Pseudomonos, Lactobacillus etc.

Nitrifying bacteria are autotrophs and grows slowly and need aerobic condition.  Denitrifying bacteria are hetertrophs and grows rapidly and need anaerobic conditions.

Nitrification requires a pH of about 6.5 to 8.0; denitrification takes place at 7.0 to 8.5

Nitrification provides soluble nitrates readily available in the soil to be easily absorbed by the roots.

Denitrification processes are used in wastewater or effluent treatment plants.

6 0
3 years ago
Ms. S, a 78-year-old black female, is brought to the emergency room by her son who reports that she has been vomiting violently
lawyer [7]

Answer:

1. Severe dehydration

2. Investigations required will include serum urea, electrolytes and creatinine (U/E/Cr), full blood count and differentials, urinalysis, urine microscopy, culture and sensitivity, renal ultrasound, random blood glucose.

3. Deranged U/E/Cr that is urea, creatinine and sodium are elevated which indicate kidney injury. There is proteinuria, haematuria, positive nitrate and leucouria points towards UTI. The WBC is high which indicate infection.

5. She is likely to have prerenal AKI

6. The concern is that she is not regular on her antihypertensive medication, and hypertension can cause renal impairment ( hypertensive nephropathy). There is need for dialysis if there is markedly elevated E/U/Cr or renal impairment was very severe.

Explanation:

Acute kidney injury is when there is sudden and often reversible loss of renal function which develops over days or weeks and is usually accompanied by a reduction in urine output.

There are many causes of AKI, which are classified as prerenal, renal and post renal. In prerenal AKI, the kidneys gets damaged as a result of hypoperfusion leading to acute tubular necrsosis. Common examples are severe dehydration( like in this patient from vomiting), cardiac failure, sepsis, blood loss etc. Renal AKI is usually cause by direct insult to the kidneys which can result from drugs, toxins, inflammatory conditions etc. Post renal AKI occurs when there is obstruction to urine flow at any point from the tubule to the urethra e.g in BPH, stones, strictures etc.

In Prerenal AKI, it leads to acute tubular necrosis. Histologically, the kidney show inflammatory changes, focal breaks in the tubular basement membrane and interstitial oedema.

Chronic kidney disease(CKD) refers to an irreversible deterioration in renal function which develops over a period of years.initially, it is manifestation only as biochemical abnormality but eventually, loss of the excretory, metabolic and endocrine functions of the kidneys leads to clinical symptoms and signs of renal failure.

7 0
3 years ago
Which statement is not part of the cell thoory?
Vsevolod [243]

Answer:

c

Explanation:

all cells do not have an nucleus

5 0
3 years ago
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