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3 years ago

A food worker has just rinsed a dish after cleaning it what should he do next

1 answer:

3 0

Answer: Food worker should let the dish dry (with the help of tissue paper to avoid any growth of germs on wet surface) after rinsing and also they should sanitize their hand in order to maintain proper hygiene.

Doing so can reduce the level of surface contamination on dishes (by microbes such as bateria, and viruses).

There should be proper hygiene in preparing and serving food otherwise food may cause illness to people.

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2 things that can cause a cell to lose its ability to regulate its cell cycle properly

Sveta_85 [38]

Answer:

Cancer is unchecked cell growth. Mutations in genes can cause cancer by accelerating cell division rates or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death. As a mass of cancerous cells grows, it can develop into a tumor. hope this helps

Explanation:

3 0

3 years ago

When free energy is released during a chemical reaction it is called what of below

Nady [450]

Answer:

an exergonic reaction

6 0

3 years ago

Describe an experiment you would perform to prove that an orange contains vitamin C

Tanya [424]

To prove that a certain fruit (in this case, an orange) indeed contains a certain compound (in this case, vitamin C); then the vitamin C should be extracted and isolated from the orange and must be confirmed by molecular analysis. The extraction process involves using chemicals (i.e. 6% MPA), and procedures such as centrifugation and filtration. Then the extract is stored and subjected to high-performance liquid analysis (HPLC) to measure the vitamin C content.

5 0

3 years ago

Consider the following hypothetical population and compute the statistical measures below: #births = 50,000; #deaths = 10,000; #

777dan777 [17]

Answer:

The birth rate refers to an average number of births in one year per thousand individuals in the population at mid-year.

BR = (total birth in an annum / total population in mid year) * 1000

BR = (50000 / 1000000) * 1000 = 50

Death rate refers to an average number of death in an annum per thousand individuals in a population at mid year. Thus,

DR = (total death / total population in mid year) * 1000

DR = (10000 / 1000000) * 1000 = 10

Annual population growth rate or APGR is calculated as:

APGR = (Birth rate - Death rate) / Death rate

APGR = (50 - 10) / 10 = 4.0 %

Doubling time is the whole sum time needed for a population to get double in size. It is calculated as DT = ln (2) / growth rate

70 / 4.0 = 17.5 years

Thus, population will get double in 17.5 years.

Adjusted (true) growth rate is equal to APGR + (NMR / Death rate)

And NMR = [(immigrants -emigrants) / total population] * 1000

NMR = [(5000 - 20000) / 1000000] * 1000 = -15

Thus, Adjusted (True) growth rate = 4.0 + (-15 /10) = -6%

The adjusted (true) doubling time = ln (2) / Adjusted growth rate

= 70 / -6 = -11.66

This negative sign shows that it will never get double in such situation.

5 0

3 years ago

Describe the appearance of the water and the hydrogen peroxide. How are they similar and how are they different?

Ber [7]

The bonds that hold H2O2 together break apart and the atoms are rearranged to form water (H2O) and oxygen (O2) molecules. This happens slowly in store-‐bought hydrogen peroxide, so even in dark bottles, it will 'expire' in a year, or less if it's opened. ... And higher concentrations of H2O2 produce more oxygen.

8 0

3 years ago