Answer: 2. Motor vehicle or motorcycle crashes
Explanation:
Blunt trauma is the initial trauma from which more common forms arise such as abrasions, l, contusions, acerations, internal bleeding and/or bone fractures.
It can quickly lead to exsanguination, hemorrhagic or hypovolemic shock, and death if penetrating trauma occurs in blood vessels close to the heart. Another source of vascular damage that can lead to internal bleeding is blunt trauma. This can happen in an automotive crash following a high speed deceleration.
Several motor vehicle or motorcycle crashes causes internal bleeding in abdominal cavity which damages ribs as well.
Hence, the correct option is 2. Motor vehicle or motorcycle crashes.
Answer:
The correct answer is (a) Mitosis = 10, (b) Meiosis I = 10, (c) Meiosis II = 5.
Explanation:
- Mitosis is the process by which the genetic material from the parent cell is divided equally among the daughter cells. This process of mitosis is preceded the a replication phase where the genetic material of the parent cell is doubled and then divided among the daughter cells. The ploidy or the chromosome number of the parent is maintained in the daughter cell.
- Meiosis is the process by which the genetic material from the parent cell is divided among daughter cells, where the daughter cells are the gametes. Here, the number of chromosomes in the daughter cells is half of that present in the parent cell.
- A diploid individual having 10 chromosomes, have 5 of the chromosomes obtained from its mother and 5 from its father.
- During mitosis, each of the 10 chromosomes will be divided between the two daughter cells. This is done by replication or doubling of the 10 chromosomes. This replication process will result in the generation of 2 chromatids per chromosome. During the metaphase stage of mitosis when these chromosomes align along the metaphase plate, there will be 10 chromosomes aligning and each chromosome will comprise of 2 chromatids, so total there will be 20 chromatids. These chromatids separate during the anaphase and generate 20 chromosomes in the dividing parent cell.
- In the metaphase stage of meiosis I, the homologous (each obtained from mother and father) pair of chromosomes arrange themselves in tetrad or bivalents (two chromosomes together). Therefore, if the total number of chromosome is 10, there are 5 bivalents that can be formed from them. However, the total number of chromosomes that align along the metaphase plate is 10. Each chromosome has 2 chromatids, so total number of chromatids is 20. During anaphase I phase, the bivalents or homologous chromosomes separate from each other, and the number of chromosomes and chromatids in each daughter cell after meiosis I is 5 and 10 respectively.
- The metaphase stage of meiosis II is exactly same as that of mitosis. Here the 5 chromosomes comprising of 10 chromatids, obtained after meiosis I, are aligned along the metaphase plate. During anaphase II, the 10 chromatids are further divided into the two gametes such that each gamete gets 5 chromosomes (after separation chromatid forms the chromosome).
A tissue is different from an organ because an organ is made up of a group of tissues working together to do a specific job. While an organ is made up of cells that are working together to do a specific job.
They are similar by both of them working together to accomplish specific functions.
Just in case, an example of an organ is a heart.
hope this helps
Answer:
Ia tidak mempunyai badan fizikal.
Penjelasan:
Jisim udara tidak diukur oleh keseimbangan tuas atau keseimbangan berat yang lain kerana mustahil untuk mengukur jisim udara. Hanya dua sifat udara yang dapat diukur seperti kadar aliran dan tekanan. Imbangan tuas mengukur berat bahan-bahan yang mempunyai badan fizikal sehingga sebab itu jisim udara tidak dapat diukur kerana tidak mempunyai badan fizikal. Udara mempunyai jisim tetapi tidak mempunyai badan fizikal sehingga mustahil untuk mengukur beratnya.
