1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
UkoKoshka [18]
3 years ago
12

How does an organism grow and change throughout its life

Chemistry
1 answer:
MArishka [77]3 years ago
7 0
An organism goes through a cycle called development where it grows and changes. Living things can receive energy from their environment (eg:food) and use the energy to grow (get bigger, stronger, etc), develop and reproduce. Living things need energy in order to build up the substances that make up their cells.
Hope this helps! Good luck!
You might be interested in
Which of the following statements describes a common characteristic of catabolic pathways?
Anna71 [15]

Answer:

C. They are exergonic and provide energy that can be used to produce ATP form ADP and Pi.

Explanation:

There are 2 types of metabolic reactions.

  1. Anabolic reactions (Anabolism)
  2. Catabolic reactions (Catabolism)

CATABOLIC REACTIONS:

They consist of reactions in which larger molecules are broken down into simpler ones. They are exergonic i.e. energy producing reactions. The released energy can be stored in the form of ATP (energy currency of cell).

ANABOLIC REACTIONS:

They consist of reactions in which larger molecules are synthesized from simpler ones. They are endergonic reactions i.e. energy is absorbed.

MEMORY AID:

An easy way to remember catabolic reactions is to think of them as "catastrophic reactions" i.e. larger molecules are destructed to produce simpler ones.

Coming back to the question,

<u>a. They require energy from ATP hydrolysis to break down polymers into monomers. </u>

Energy requiring reactions are anabolic and so this is the incorrect answer.

<u>b. They are endergonic and release energy that can be used for cellular work.</u>

Endergonic reactions are anabolic and hence this is the incorrect answer.

<u>c. They are exergonic and provide energy that can be used to produce ATP from ADP and Pi</u>

This statement correctly fits the definition of Catabolic reactions and is therefore the correct answer.

<u>d. They combine small molecules into larger, more energy-rich molecules.</u>

This statement describes anabolic reactions and hence the incorrect choice.

3 0
3 years ago
Calculate the mass percent of HOCH 2CH 2OH in a solution made by dissolving 3.2 g of HOCH 2CH 2OH in 43.5g of water.
grin007 [14]

Answer:

\%m/m=6.85\%

Explanation:

Hello,

In this case, we are asked to compute the by mass percent for the given 3.2 g of ethylene glycol in 43.5 g of water. In such a way, since the by mass percent is computed as follows:

\%m/m=\frac{m_{solute}}{m_{solute}+m_{solvent}} *100\%

Whereas the solute is the ethylene glycol and the solvent the water, therefore we obtain:

\%m/m=\frac{3.2g}{3.2g+43.5g} *100\%\\\\\%m/m=6.85\%

Best regards.

5 0
3 years ago
You decided to prepare a phosphate buffer from solid sodium dihydrogen phosphate (NaH2PO4) and disodium hydrogen phosphate (Na2H
KIM [24]

Answer:

For disodium hydrogen phosphate:

5.32g Na2HPO4

For sodium dihydrogen phosphate:

7.65g Na2HPO4

Explanation:

First, you have to put all the data from the problem that you going to use:

-NaH2PO4 (weak acid)

-Na2HPO4 (a weak base)

-Volume = 1L

-Buffer pH = 7.00

-Concentration of [NaH2PO4 + Na2HPO4] = 0.100 M

What we need to find the pKa of the weak acid, in this case NaH2PO4, for that you need to find the Ka (acid constant) of NaH2PO4, and for this we use the pKa of the phosphoric acid as follow:

H3PO4 = H2PO4 + H+    pKa1 = 2.14

H2PO4 = HPO4 + H+       pKa2 = 6.86

HPO4 = PO4 + H+      pKa3 = 12.4

So, for the preparation of buffer, you need to use the pKa that is near to the value of the pH that you want, so the choice will be:

pKa2= 6.86

Now we going to use the Henderson Hasselbalch equation for the pH of a buffer solution:

pH = pKa2 + log [(NaH2PO4)/(Na2HPO4)]

The solution of the problem is attached to this answer.

Download odt
7 0
3 years ago
Two molecules of one reactant combine with 3 molecules of another to produce 5 molecules of a product.
maksim [4K]

Answer:

A = 2A + 3B → 5C

Explanation:

The two molecule of A and three molecules of B will react to form the five molecules of C.

2A + 3B   →   5C

Other options are incorrect because,

B = A₂ + B₃  →   C₅

in this reaction one molecule of A₂ and one molecule of B₃ combine to form one molecule of C₅.

C = 2A + 5B   →  3C

in this reaction two molecules of A and five molecules of B combine to form three molecule of C.

D = A₂ + B₃  →  C₃

in this reaction one molecule of  A₂ and one molecule of B₃ combine to from one molecule of C₃.

3 0
3 years ago
34. An electron in the 3d state of the hydrogen atom has a radial part of the wave function of the form A r2 exp(-r/3ao). What i
nikdorinn [45]

Answer: Option (e) is the correct answer.

Explanation:

Formula to calculate radius is as follows.

          p(r) = Ar(r^{2}e^{\frac{-r}{3a_{o}}}

                = Ar^{3}e^{\frac{-r}{3a_{o}}}

     \frac{dp(r)}{dr} = 0

            Ar^{3}e^{\frac{-r}{3a_{o}}}(\frac{-1}{3a_{o}} + Ae^{\frac{-r}{3a_{o}}}(3r^{2}) = 0

                     \frac{Ar^{3}}{3a_{o}}e^{\frac{-r}{3a_{o}}}

                      = 3Ar^{2}e^{\frac{-r}{3a_{o}}}

                       r = 9a_{o}

Thus, we can conclude that most likely radius at which the electron would be found is 9a_{o}.

4 0
3 years ago
Other questions:
  • Enter a balanced equation for the reaction of Na2S and CdSO4.
    6·2 answers
  • Which one of the following types of rock would weather the fastest
    13·1 answer
  • A liquid with a high surface tension exhibits __________.
    10·2 answers
  • Suppose you start with a solution of red dye #40 that is 3.1 ✕ 10−5 M. If you do four successive volumetric dilutions pipetting
    6·1 answer
  • How many hydrogen atoms are in 5 molecules of isopropyl alcohol, cmc010-1.jpghmc010-2.jpgo?
    6·1 answer
  • The picture below shows 3 sets of balloons, all with a particular charge. Which of the picture(s) is true? Explain.Then explain
    12·1 answer
  • what happened to the kinetic energy of the water particles when gina put the hot wrap on the the cold bottle
    9·2 answers
  • The number of molecules in 17.9 g of CO is
    8·1 answer
  • What does the line with “alternating spikes and semicircles” mean?
    9·1 answer
  • what does the distance traveled by each component on the paper strip in paper chromatography depend on
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!