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Answer:</h2>
Option B) The parent cell has 24 chromosomes.
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Explanation:</h2>
This is because:
- In Asexual reproduction only one parent is required, unlike sexual reproduction which needs two parents. Since there is only one parent, there is no fusion of gametes and no mixing of genetic information. As a result, the offspring are genetically identical to the parent and to each other.
- The parent cell simply divides to form two daughter cells that are identical to the parent. In sexual reproduction, meiosis produces haploid gametes that fuse during fertilization to produce a diploid zygote.
- Haploid gametes are not involved in asexual reproduction. A parent passes all of its genetic material to the next generation, and hence the number of chromosomes remains same.
Result: The number of chromosomes remains same in asexual reproduction.
Answer:
I think its cell membrane
Explanation:
The plasma membrane, or cell membrane, is the phospholipid layer that surrounds the cell and protects it from the outside environment
The meteorite was probably 1<span>0 to 15 km (6.2 to 9.3 mi) wide</span> and affected the entire planet through a proces called "impact winter". As the name suggests, an impact winter is a period of low temperature produced by a huge cloud of ash and dust that blocks sunlight. Since sunlight is essential for plants to survive, if the sun rays are blocked by this cloud, all animals that depend on those plants (including dinosaurs) will die. The meteorite could have created such a cloud upon hitting the earth.
Answer:
The basic difference between SEM and TEM is that TEM generates an image with the assistance of radiation that goes through the specimen, while the images generated by the SEM take place with the assistance of electrons getting released from the surface of the specimen.
SEM is primarily used to examine the composition of the surface, with the help of SEM one can study the microbes present in the ecological niche like in the lining of the gut and human skin. Due to its great depth, it is considered the electron microscope analog of a stereo light microscope. It helps in providing complete images of the cells present on the surface, which are not easy to get with the help of TEM. Due to its enhanced functionality, it can also be used for size determination and particle counting, and also for process control.
