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
erma4kov [3.2K]
3 years ago
14

PLEASE HELP QUICK!! WILL MARK BRAINLIEST ANSWER!! When water is diffused across a selectively permeable membrane, scientists ref

er to that as cellular respiration diffusion active transport osmosis
During diffusion, when the concentration of molecules on both sides of the membrane is the same, the molecules will

continue to move across the membrane in both directions.
move across the membrane to the outside of the cell.
move across the membrane to the inside of the cell.
stop moving across the membrane.
Why does mitosis need to occur?

Question 3 options:


It is where all organisms reproduce and repair tissues by creating new cells with half of the DNA that was found in the parent cell.


It allows single-celled organisms to reproduce, and other organisms to repair damaged tissues and grow.


It allows single-celled organisms to reproduce and for other organisms to obtain the extra chromosomes needed for growth.


It is where multi-celled organisms reproduce by creating new cells with twice the DNA that was found in the parent cell.


Which statement best describes the relationship between the cytoplasm and the nucleus?
Question 4 options:


The nucleus is an organelle that is surrounded by the cytoplasm, a jelly-like fluid.


The cytoplasm is an organelle that is usually found next to the nucleus.


The nucleus is a jelly-like fluid, and it mixes with the cytoplasm, that is a fluid much like the nucleus.


The cytoplasm is a jelly-like fluid that fills the nucleus

Which statement best describes the relationship between the cytoplasm and the nucleus?
Question 4 options:


The nucleus is an organelle that is surrounded by the cytoplasm, a jelly-like fluid.


The cytoplasm is an organelle that is usually found next to the nucleus.


The nucleus is a jelly-like fluid, and it mixes with the cytoplasm, that is a fluid much like the nucleus.


The cytoplasm is a jelly-like fluid that fills the nucleus
Chemistry
1 answer:
xxTIMURxx [149]3 years ago
7 0

Answer :

During diffusion, when the concentration of the molecules on both sides of the membrane is the same, the molecules will continue to move across the membrane in both the direction.

Answer 3 : It allows single-celled organism to reproduce, and other organism to repair damage tissues and grow.

Answer 4: The nucleus is an organelle that is surrounded by the cytoplasm, a jelly-like fluid.

Explanation :

Diffusion : It is a process where liquid moves from higher concentration to the lower concentration through permeable membrane.

When the concentration of the molecules on both sides of the membrane is same and the membrane is permeable membrane then diffusion will occur and the molecules will moves continuously across the membrane in both the direction.

Answer 3 :

Mitosis : It is a process of cell division. In this process, nucleus divides into two daughter cell and each daughter cell contains same number of chromosomes as present in parent nucleus.

The main purpose of the mitosis is to repair damaged tissues and growth.

Answer 4 :

Nucleus is a type of cell organelle. It is present in both animal and plant cells and it is the brain of the cell. It is present only in eukaryotic cell.

Nucleus is an organelle which is surrounded by the cell membrane which protects its from the other cells.

Cytoplasm is a jelly-like fluid which is present in the cell membrane which is made up of salt and water.


 

You might be interested in
Use the given data at 500 K to calculate ΔG°for the reaction
Anton [14]

Answer : The  value of \Delta G^o for the reaction is -959.1 kJ

Explanation :

The given balanced chemical reaction is,

2H_2S(g)+3O_2(g)\rightarrow 2H_2O(g)+2SO_2(g)

First we have to calculate the enthalpy of reaction (\Delta H^o).

\Delta H^o=H_f_{product}-H_f_{reactant}

\Delta H^o=[n_{H_2O}\times \Delta H_f^0_{(H_2O)}+n_{SO_2}\times \Delta H_f^0_{(SO_2)}]-[n_{H_2S}\times \Delta H_f^0_{(H_2S)}+n_{O_2}\times \Delta H_f^0_{(O_2)}]

where,

\Delta H^o = enthalpy of reaction = ?

n = number of moles

\Delta H_f^0 = standard enthalpy of formation

Now put all the given values in this expression, we get:

\Delta H^o=[2mole\times (-242kJ/mol)+2mole\times (-296.8kJ/mol)}]-[2mole\times (-21kJ/mol)+3mole\times (0kJ/mol)]

\Delta H^o=-1035.6kJ=-1035600J

conversion used : (1 kJ = 1000 J)

Now we have to calculate the entropy of reaction (\Delta S^o).

\Delta S^o=S_f_{product}-S_f_{reactant}

\Delta S^o=[n_{H_2O}\times \Delta S_f^0_{(H_2O)}+n_{SO_2}\times \Delta S_f^0_{(SO_2)}]-[n_{H_2S}\times \Delta S_f^0_{(H_2S)}+n_{O_2}\times \Delta S_f^0_{(O_2)}]

where,

\Delta S^o = entropy of reaction = ?

n = number of moles

\Delta S_f^0 = standard entropy of formation

Now put all the given values in this expression, we get:

\Delta S^o=[2mole\times (189J/K.mol)+2mole\times (248J/K.mol)}]-[2mole\times (206J/K.mol)+3mole\times (205J/K.mol)]

\Delta S^o=-153J/K

Now we have to calculate the Gibbs free energy of reaction (\Delta G^o).

As we know that,

\Delta G^o=\Delta H^o-T\Delta S^o

At room temperature, the temperature is 500 K.

\Delta G^o=(-1035600J)-(500K\times -153J/K)

\Delta G^o=-959100J=-959.1kJ

Therefore, the value of \Delta G^o for the reaction is -959.1 kJ

3 0
3 years ago
Identify the name of the compound that goes with this chemical compound
postnew [5]
What is the chemical compound?
8 0
3 years ago
What do nonmetals and metals seek to do when having full outermost shells?
IceJOKER [234]

Answer: C

Explanation:

5 0
3 years ago
The reaction of iron with oxygen to form iron oxide is an example of an oxidation–reduction reaction: 4fe + 3o2 → 2fe2o3. in thi
nadya68 [22]

Answer:-

Oxygen gains electrons and is reduced.

Explanation:-

For this reaction the balanced chemical equation is

4Fe + 3O2 --> 2Fe2O3

When Oxygen is present as oxygen gas, the oxidation number of O is Zero since it is the only element present in Oxygen gas.

Similarly Iron is present in Fe with oxidation number Zero.

In the case of Fe2O3, Oxygen has the oxidation number -2 while Iron has +3.

So the oxidation number of Oxygen goes from Zero to -2.

Since the oxidation number decreases Oxygen is reduced.

Since reduction involves gain of electrons, Oxygen gains electrons.

4 0
3 years ago
Do blood cells have a rigid of cells walls
KatRina [158]

<em>Yes</em> the blood cells have a rigid of cell walls as their cell walls are cell membrane.

4 0
3 years ago
Other questions:
  • Why could a diet low in carbohydrates be dangerous?
    15·2 answers
  • How many grams are in 23.0 moles of carbon
    8·2 answers
  • What occurs during a chemical reaction? *
    7·2 answers
  • If a gas has a molecular mass of 44.0, the volume of 88.0 grams of the gas at STP would be ..
    14·1 answer
  • What information does a molecular formula give?
    5·2 answers
  • Determine the name and formula of a hydrate with the following composition; 32.30%
    10·1 answer
  • A scientific law is ___.
    7·1 answer
  • There are 1.00 mol each of H2 and I2 in a 2.00 L flask. The Kc for this reaction is 55.3. Determine the equilibrium concentratio
    6·2 answers
  • Calculate the answer. Express it in scientific notation and include the correct number of significant figures. (12 x 104 ) x (5
    12·1 answer
  • Can the element gold kick out magnesium from a compound?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!