A) move and capture food
B) create and exchange genetic material
C) Store and regulate water
D) make and store energy
Answer:
A) move and capture food
Explanation:
Amoeba is madeup of single cell and having a true nucleus or membrane around the nucleus. Amoeba belongs to kingdom protista because it has some characteristics of animals such as it can move from one place to another. Amoeba used phagocytosis which is a type of endocytosis in which large substances are entered into the cell. Pseudopod is part of amoeba body which is responsible for the movement and capturing the food.
Answer:
DNA - Deoxyribonucleic acid, a macro molecule which has all the hereditary data or information in many living beings.
Function- DNA plays an important role in the production of proteins, along with the metabolism, and reproduction of the cells.
Explanation:
Structure of DNA:
Deoxyribonucleic acid, a macro molecule which has all the hereditary data or information in many living beings.
DNA plays an important role in the production of proteins, along with the metabolism, and reproduction of the cells.
The image is a simplified representation of a short DNA molecule, with deoxyribose sugar molecules in orange, linked to phosphate molecules through a special type of covalent linkage called the phosphodiester bond.
Each nitrogenous base is represented by a different color – thymine in purple, adenine in green, cytosine in red and guanine in blue.
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Correct Answer: A). Dissecting microscopes and compound light microscopes
After magnification the object appears larger in size that is measured by the magnifying power. It can be found out by dividing the focal length of the scanning object to the focal length of the eye piece. From the above given option the greatest difference that is found in the magnifying power is between the dissecting microscope and compound light microscope.
Hence, the correct answer would be option A.
Amongst the options provided, the biggest difference in magnification power is between transmission electron microscopes and dissecting microscopes. Dissecting microscopes provide lesser magnification but enable three-dimensional viewing, while electron microscopes offer superior magnification and detail, at the cost of the specimen's life.
Therefore, the correct answer is option b.
The greatest difference in magnifying power lies between b. transmission electron microscopes and dissecting microscopes.
Dissecting microscopes provide lower magnification, typically ranging between 20 to 80 times the object size, and are suitable for viewing larger objects such as tissues (Fig 3.2b). They also offer a three-dimensional view of the specimen.
On the other hand, transmission electron microscopes utilize a beam of electrons instead of light.
This mechanism facilitates much higher magnification and detail while providing superior resolving power. However, this method requires the destruction of the specimen and cannot be used for viewing living cells.
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