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Answer:
After fertilization, the zygote begins to divide rapidly. Twenty-four hours after fertilization, the zygote contains two cells, and three days after fertilization the zygote has 16 cells and is called a morula. The cells continue to divide and form a hollow bundle called a blastocyst
Explanation:
Nucleic acid:
DNA is responsible for directing the cellular function. The nucleic acids are responsible for the storage of genetic information.
The DNA and RNA are the nucleic acids present in an organism. The DNA is the double stranded helix and comprises of sugars, nitrogenous base and a phosphate group. Deoxyribose is the sugar present along with 4 nitrogenous bases which are adenine, guanine, thymine and cytosine. These bases code for proteins which are responsible for carrying out range of activities such as cell growth, cell division and cell signalling.
RNA has ribose sugar and 4 nitrogenous base. Thymine is replaced by uracil in RNA. There are three types of RNA: rRNA, mRNA, and tRNA.
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Answer:
Explanation:
Các yếu tố đông máu là Yếu tố I (fibrinogen), Yếu tố II (prothrombin), Yếu tố III (thromboplastin mô hoặc yếu tố mô), Yếu tố IV (canxi ion hóa), Yếu tố V (yếu tố không bền hoặc chủ động), Yếu tố VII (yếu tố ổn định hoặc proconvertin) và Yếu tố VIII (yếu tố chống ưa khí) .26-Jul-2021
