a. A person with blood group AB produces no antibodies. How can you explain this?
This is simply a protective mechanism of the body. A person with blood group A will produced antibodies against blood group B because group B cells are considered foreign bodies to the person and will not be tolerated and vice versa. Group B people have antibodies against group A and will not tolerate group A cells. This is why group A person can only be transfused with group A blood or group O blood. Both A and B have no antibodies against blood group O. Indeed no blood group has antibodies against Blood group and this is why people with blood group O are called universal donors.
Group AB people do not have antibodies against any blood group because both these groups are part and parcel of their body and production of antibodies against either A or B would end up in self destruction of the body. Group AB people are known as universal recipients because they can receive blood from any of the other groups.
b. False
Answer:
Body fat can be divided into two components:
Essential body fat: It is the minimum percentage of fat required by the body in order to function efficiently and to maintain a good health. It is usually stored in small amounts in muscles, internal organs, bone marrow as well as the central nervous system.
Storage body fat: It is also called non-essential body fat as it is not required for the basic functioning of the body. Excess of food or energy is stored in the form of fat around the organs (visceral fat) and beneath the skin (subcutaneous fat) in the body. It serves as the energy reserve and is used when the body's glycogen reserves are depleted.
Hence, the given statement is true.
The body consists of essential body fat and storage body fat as fat components. The least fat percentage utilized by the body to perform necessary functions for the maintenance of good health is the essential body fat. In contrast, some of the fat is deposited and stored in the body as an energy reserve to be used at the time of depletion of glycogen reserves of the body.True.
Further Explanation:
The fat present in the heart, liver, lungs, spleen, intestines, kidney and muscles is called the essential fat as this fat is required for normal body functions. While, the fat which accumulates in form of the adipose tissue is referred to as storage fat. The storage body fat is also known as non-essential fat as it is not used for the vital functions of the body.
The essential body fat serves as the metabolic fuel for the production of the energy which is utilized to perform important cellular processes. During elevated energy requirements, for example at the time of excessive exercise, the storage body fat is used to fulfill the energy needs of the body due to the depletion of essential body fats.
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Answer Details:
Grade: High School
Subject: Biology
Chapter: Nutrients
Keywords:
Fat components, essential fat, non-essential fat, storage fat, energy reserves, glycogen reserves, cellular processes.
species
ecosystem
organism
Answer:
the answer is an organism
Using the wordshaploid cell, diploid cell, and fertilization all together in a sentence - Fertilization is the union of two unicellular, haploid gametes to produce one unicellular, diploid zygote.
The process of combining the male gamete, or sperm, with the female gamete, or ovum. The product of fertilization is a cell called a zygote.
Thus, the correct sentence would be - Fertilization is the union of two unicellular, haploid gametes to produce one unicellular, diploid zygote.
Learn more about:
Answer:
The sexual life cycles involve the alternation between meiosis and fertilization. Meiosis is a process where the diploid cells gives a rise to haploid cells, and fertilization is the process where two haploid cells (gametes) fuse to form a diploid zygote.
Explanation:
Hope this helps