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Eva8 [605]
3 years ago
7

Proteins that act as catalysts in biological reactions

Biology
1 answer:
mezya [45]3 years ago
7 0
C is the correct answer
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Sensory organisms receive a stimulus
matrenka [14]
Can you clarify the question
7 0
2 years ago
A 0.2 M solution of NaCl contains ________ g of NaCl in 1 l of ________.
Maksim231197 [3]

Answer:

11.7 g in 1 L of water.

Explanation:

Molarity (M) or Molar concentration is a measure used in chemistry for solutes in a solution.

It is defined as mol/ L (number of moles per litre).

0,2 M means we have 0,2 mol/ L

In order to know how many grams this means we need to look up the molecular weight of the solute. In this case NaCl: 58.443 g/mol

\frac{1 mol NaCl}{58.443 g} = \frac{0.2 mol}{X g}

X= \frac{(0.2 mol x 58.433 g}{1 mol}

X= 11.69 g

The solution has 11.69 g of NaCl in 1 L of water since its an adequate polar solvent for NaCl dissolution.

8 0
3 years ago
a cell has 10% salt solution and 90% water solution,while the beaker has 30% salt solution and 70% water solution. what happens
Archy [21]
If it is a red blood cell than the cell will shrivel because the water will dissolve out of the cell    ( because more water flows out of the cell than back into the cell the cell Shrinks )
8 0
3 years ago
How did land whales eventually became aquatic?
cluponka [151]

Explanation:

To swim, they move their tails up and down, rather than back and forth as fishes do. This is because whales evolved from walking land mammals whose backbones did not naturally bend side to side, but up and down. ... Whales do the same thing as they swim, showing their ancient terrestrial heritage.

Cetaceans are fully aquatic marine mammals belonging to the order Artiodactyla, and branched off from other artiodactyls around 50 mya (million years ago). Cetaceans are thought to have evolved during the Eocene or earlier, sharing a closest common ancestor with hippopotamuses.

8 0
3 years ago
Freeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
LUCKY_DIMON [66]

Answer:

k

Explanation:

3 0
3 years ago
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