12. The substance in which a solute is being dissolved. a- Solvent b- Solute c-
ID: 210744 • Letter: 1
Question
12. The substance in which a solute is being dissolved.
a- Solvent
b- Solute
c- Diffusion
d- Solution
13. Produces cellular energy from food energy
14. Site of protein synthesis
15. The passive movement of molecules across a semipermeable membrane with the concentration gradient from an area of high concentration to an area of low concentration via a protein channel.
a- Facilitated diffusion
b- Simple diffusion
c- Osmosis
d- Active transport
16. Produces food energy from light energy (plants only)
17.
-A.B.C.D.
Passive process; Does not require energy.
-A.B.C.D.
Requires energy
-A.B.C.D.
Requires a protein channel
-A.B.C.D.
Movement of water only!
A.
Diffusion
B.
Active Transport
C.
Active Transport & Facilitated Diffusion
D.
Osmosis
18. The substance being dissolved in a solution.
Diffusion
Solvent
Solute
Solution
19. Site of lipid synthesis
20. In hospitals, patients may be given fluids intravenously. These fluids are prepared at a concentration of 0.9% sodium chloride so that the ion concentration in the fluid is equal to the ion concentration in human blood. The IV fluid is an example of an _____________________ solution.
Explanation / Answer
Answer 12. The substance in which a solute is being dissolved is known as the Solvent. If we take the example of salt dissolved in water then the salt will be known as the solute (the substance that is being dissolved) and the water will be known as solvent (the substance in which solute dissolves).
Answer 13. Mitochondria are the subcellular organelle that produces cellular energy from food energy. This cellular energy is known as Adenosine Triphosphate (ATP). ATP is utilized by the cells to carry out its necessary physiological functions.
Answer 14. Cellular organelle known as Ribosomes are the site for protein synthesis. Ribosomes are found in every major cell type. Ribosomes hold mRNA, tRNA, ATP, GTP and other translation machinery to carry out protein synthesis.
Answer 15. The correct answer to this question is Facilitated diffusion. It is a passive process in which the solutes move down their concentration gradient and do not require ATP or any other energy source and is instead driven by the tendency of the cellular system to grow in entropy. The rate of facilitated diffusion depends on the permeability of the cell membrane.
Answer 16. Chloroplasts are the organelles in plant cells that produce food energy from light energy via a process known as Photosynthesis. In photosynthesis, chloroplasts work to convert light energy of the Sun into sugars that are utilized as the energy source by cells.
Answer 17. Correct match is as follows: -
Passive process; Does not require energy. --> Diffusion
Requires energy --> Active Transport
Requires a protein channel --> Active Transport & Facilitated Diffusion
Movement of water only! --> Osmosis
Answer 18. The substance being dissolved in a solution is known as Solute. The example is given in answer no. 12.
Answer 19. There are three possible sites where lipids are synthesized in a cell.
1. The smooth endoplasmic reticulum (SER)
2. The cytosol and
3. The chloroplast (only in plants).
In animal cells, SER is responsible for the majority of lipid synthesis.
Answer 20. The IV fluid is an example of an Isotonic solution. An isotonic solution is a mixture of two or more substances that have the same osmotic pressure across a semipermeable membrane. As mentioned it has the ion concentration that is equal to the ion concentration of human blood and is required to keep the cells in a homeostasis condition.
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