The answer is C.
A virus is made up of or consists of a nucleic acid in varying quantity which may either be RNA or DNA.
The nucleic acid is surrounded by a protein shell called a capsid. The word capsid comes from the Latin word capsa which means box.The capsid and the nucleic acid within it are together referred to as nucleoprotein.The capsid is made up of small sub units called capsomeres.
In many viruses, the nucleoprotein makes up the whole virus. More complex viruses have one or more further enclosing structures also made mostly of protein. These structures are referred to as envelopes and each envelop is specific to a particular virus.
c. protein and nucleic acids
Answer:
D. Both a and b
Explanation:
The difference in ion concentration between the intracellular and extracellular fluids in a cell is due to both active ion transport and passive diffusion of ions.
The difference in ion concentration between the intracellular and extracellular fluids in a cell is primarily due to both active ion transport and passive diffusion of ions. Active ion transport refers to the movement of ions across the cell membrane using energy, such as through ion pumps or channels. Passive diffusion, on the other hand, occurs when ions move down their concentration gradient without the need for energy.
For example, the sodium-potassium pump actively transports three sodium ions out of the cell for every two potassium ions it brings in. This creates a higher concentration of potassium ions inside the cell compared to outside. Meanwhile, passive diffusion allows ions like chloride, calcium, and potassium to move across the cell membrane through ion channels, either facilitated by a concentration gradient or electrical potential.
In summary, the difference in ion concentration between the intracellular and extracellular fluids in a cell is due to both active ion transport and passive diffusion of ions.
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Transpiration
Condensation
The car is a system that has many parts. In a system, all of the parts function together to make the system work. If one part breaks down, the rest of the system doesn’t function properly. An incorrect or missing input results in the wrong output. For example, if the car battery is dead, the engine won’t turn on, and the car won’t move.
Cloning is a process of making geneticallyidentical copiesof a cell. In eukaryotic organisms, cloning is done through mitosis. So the correct answer is Option B.
When a cell replicates itself without altering its genetic makeup and producesidentical copies which are similar to the original cell, then the cell is said to undergo cloning.
In prokaryotes, such as bacteria, binary fission, and budding are used to make copies of the cells while in eukaryotes, cloning of cells is done through a cell division process known as mitosis.
Mitosis is also called equatorial division. This is because the chromosomes are replicated and distributed equally between the clones. Cloning occurs naturally during the birth of identical twins but it can be performed artificially in the laboratory by providing the similar condition necessary for cloning.
To learn more about cloning, refer to the link:
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Answer:
The correct answer would be B) Mitosis.
Mitosis refers to the division of a cell which results in the formation of two daughter cells, each having identical genetic material as present in the parent cell.
The cells produced are identical to each other in terms of genetic information, structure, as well as the size and thus they are termed as a clone.
Mitosis is used by most of the cells (except gametic cells) for their division. In a cell or tissue culture also, cells undergo mitotic division to divide and grow.
Thus, cloning can be added to the mitosis.
Answer: 10 million colonies
The volume of media used is 0.1ml and the concentration diluted to 10^-5, so the actual volume used would be: 0.1ml * 10^-5= 1ml * 10^-6
The media shows 10 colonies. The number of colonies per volume would be: 10 cfu/ (1ml * 10^-6)= 10* 10^6 cfu/ml= 10 million cfu/ml
D. a source of energy
Monosaccharides are used by plants and animals as a source of energy.