.Most life-forms that existed on Earth have become extinct.
<span>.Dinosaurs existed on Earth for more than 544 million years.
Both these statements are well suported by fossil record.</span>
The group of chemical processes in organisms that maintain life is known as metabolism. The three primary functions of metabolism are: converting the energy in food into energy that can be used to power cellular functions.
It is convenient to divide metabolism into two groups: Molecules are broken down during catabolism to provide energy. All of the substances that the cells require are synthesised during anabolism. Metabolic processes include the chemical reactions that keep you alive. One example of metabolism is the rate at which you burn fat and consume calories. the constant anabolic and catabolic chemical and physical processes that occur in living things and their cells. Specific areas of the cell host metabolic events. The cytoplasm is where amino acid degradation and some phases of glycolysis, fatty acid synthesis, and glycogen synthesis take place. Within mitochondria, certain metabolic pathways are located at particular points.
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Answer:
Hope this helps :)
Explanation:
Photosynthesis converts light energy to chemical energy.
A toaster converts electrical energy to thermal energy.
A wind turbine generator converts kinetic energy to mechanical energy.
Answer:
The correct answer is c. osteons, lamellae
Explanation:
An osteon is the basic functional unit of the cortical bone of a tubular bone. An osteon consists of a central canal that contains two vessels of Havers. Concentric bony laminae are arranged around this canal. These lamellae consist of bone cells and the surrounding base substance. Between the Havers canals there are Volkmann canals that connect the Havers canals. The construction of the cortical bone in these functional units has not yet been fully clarified. In general, it is assumed that these structures serve primarily to deliver tissue and signal transduction. This structure is also supposed to serve the stability and adaptability of the bone.
Answer:
The correct answer will be-
1. Sperm Cell: 28 chromosomes
2. Egg Cell: 28 chromosomes
3. Daughter Cell from Mitosis : 56 chromosomes
4. Daughter Cell from Meiosis II : 28 chromosomes
Explanation:
A cell can divide by two cell division methods: mitosis and meiosis.
Mitosis is a type of cell division which divides the parent cell into two daughter cell with an equal number of chromosomes or same genetic material.
This type of method is usually observed in the somatic cells of the organisms. Meiosis is a type of cell division which divides the cell into four cells with a reduced number of chromosomes to half the number.
In the given question, since the cell contains 56 chromosomes, therefore, after mitosis which is equational division will produce daughter cell with the same number of chromosomes that is 56 chromosomes.
After meiosis, the chromosome number will be reduced to half that is cell formed will contain 28 chromosomes. Since the gametes are formed as a result of the meiosis, therefore, each gamete that is sperm cell and egg cell will have 28 chromosomes each.