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guapka [62]
3 years ago
9

How do unicellular organisms living in water control the entry/exit of water from their cells?

Biology
1 answer:
Fantom [35]3 years ago
6 0
They have a semipermeable membrane that create an equilibrium with the solute and water on the inside and outside of the organism
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Enteric bacteria most useful in the routine monitoring of microbial pollution are gram-negative rods called?
babunello [35]

E-coli bacteria which most useful in the routine monitoring of microbial pollution are gram negative rods and this is common indicator organism of water contamination.

It is important to identify enteric bacteria which is one of the major causes of diarrhea disease is bacteria and that detection of pathogenic bacteria is a global key to the prevention and identification of food borne diseases and enteric infections like diarrhea.

The extent of water  contamination can be measured using these indicator organisms. This fecal coli-form group has been used as the most common indicator of general wastewater contamination because they are abundant and easy to identify.

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8 0
2 years ago
Which of the following is the best definition of empirical evidence?
tankabanditka [31]
C is what I would choose
8 0
3 years ago
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if the ratio of the ages of kisii and esinam is 3:5 and that of Esinam and Larry is 3:5 and the sum of the ages of all three is
larisa [96]

Answer:

The age difference between the oldest and the youngest is 48.

Explanation:

Given the following data;

The ratio of the ages of Kisii (K) and Esinam (E) is 3:5.

The ratio of the ages of Esinam (E) and Larry (L) is 3:5.

The sum of the ages of all three is 147.

Since the age of Esinam is common in both ratios, we find the lowest common multiple (LCM);

LCM of 3,5 = 15.

Hence, the ratio of the three ages is now;

K:E:L = 9:15:25

Let their ages be denoted by x;

K:E:L = 9x:15x:25x

The sum of all three ages is;

9x + 15x + 25x = 147

49x = 147

x = 147/49

x = 3.

To find the age difference between the oldest and the youngest;

The oldest is Esinam = 25x

The youngest is Kisii = 9x

Therefore, 25x - 9x = 16x

Substituting the value of x, we have;

x = 3; 16x = 16(3) = 48.

The age difference between the oldest and the youngest is 48.

6 0
3 years ago
If a mutation results in an organism with new characteristics, what might eventually be formed?
Temka [501]

If a mutation results in an organism with new characteristics then eventually a new species will be formed if more such mutations will continue to accumulate in the individual. Mutations result into the accumulation of variations in an individual and when such variations keep on accumulating in a particular organism consistently it leads to formation of a new species or we can say that evolution has occured.

3 0
3 years ago
1. Which of the following is always single-stranded?
pentagon [3]
1. <span>a. messenger RNA (mRNA)

2. </span><span>c. they have different sugars

3. </span><span>a. uracil

Hope this helps!</span>
8 0
3 years ago
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