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3 years ago

Explain why chlorophyll is an essential molecule for life on earth.

1 answer:

8 0

Chlorophyll is an important bio molecule. It is critical in photosynthesis, which allows plants to absorb energy from light. It plays an important role in making plants green and healthy. It also has vitamins and helpful properties that may benefit your body. It could eliminate fungus in the body, or detoxify your blood.

Hope this helps!

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Biological muscle cells can be thought of as nanomotors that use the chemical energy of ATP to produce mechanical work. Measurem

bearhunter [10]

Answer:

The answer is 6.4 × $10^{-20}$ Joules

Explanation:

This question wants to effectively test your knowledge of the names of the negative powers of 10, so first of all, before calculating, let me explain what each of the symbols in the units given in the question means:

Force = 8.0 pN = 8.0 × $10^{-12}$ N

displacement = 8.0 nm = 8.0 × $10^{-9}$ N

Now let us calculate the work.

work = Force × Displacement

work = 8.0 × $10^{-12}$ × 8.0 × $10^{-9}$ = 64 × $10^{-21}$

= 6.4 × $10^{20}$ Joules (in standard form)

7 0

3 years ago

If you wanted to combine equal numbers of Na and Cl atoms in a flask, how much Cl would you have to add if you added 23g of NA?

Gwar [14]

Answer: The mass of chlorine atom required to combine is 35.5 grams.

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)

For sodium:

Given mass of sodium = 23 g

Molar mass of sodium = 23 g/mol

Putting values in equation 1, we get:

$\text{Moles of sodium}=\frac{23g}{23g/mol}=1mol$

According to mole concept:

1 mole of an atom contains $6.022\times 10^{23}$ number of particles

So, 1 mole of sodium will contain = $(1\times 6.022\times 10^{23})=6.022\times 10^{23}$ number of atoms

Number of atoms of chlorine = Number of atoms of sodium = $6.022\times 10^{23}$ = 1 mole

Now, calculating the mass of chlorine required by using equation 1:

Moles of chlorine = 1 mole

Molar mass of chlorine = 35.5 g/mol

Putting values in equation 1, we get:

$1mol=\frac{\text{Mass of chlorine}}{35.5g/mol}\\\\\text{Mass of chlorine}=(1mol\times 35.5g/mol)=35.5g$

Hence, the mass of chlorine atom required to combine is 35.5 grams.

5 0

3 years ago

Which of the following statements is true?

Lisa [10]

Answer: All membrane lipids are amphipathic

Explanation:

The membrane lipid molecules are amphathic in nature which states that they are both hydrophobic and hydrophillic part. The lipid bi layer has been found tot be the most widely found in cell structure.

The structure is made of phosphorus and lipids and hence called as phospholipids.

The amphipathic nature of the lipids allows it to assemble spontaneously into bi layers even under the artificial conditions.

hence, all the lipids in the cell membrane or membranes are amphipathic in nature.

6 0

3 years ago

Which type of radiation has the shortest wavelength?

BlackZzzverrR [31]

I'm pretty sure its microwaves

7 0

3 years ago

Everyone needs to consume a certain number of __________ to satisfy daily energy needs.

Step2247 [10]

Answer:

Calories

Explanation:

Calories provide the body with energy that it needs. Everyone needs to consume a certain number, but each person’s needs are different based on their body and activity level.

6 0

3 years ago