scientists have used mtDNA as a molecular clock to trace human evolution and early migration routes explain why mtDNA would be more useful in this research than rRNA

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Answer 1
Answer: An unknown mtDNA sample sample is matched to a sample of mtDNA that was found at the crime scene. This is how mitochondrial DNA (mtDNA) typing is used in forensic science.

Unlike nuclear DNA typing, mtDNA isolation is quite easy because its number is quite large. mtDNA copies rang from 100 to 10,000 per cell. It is also more stable and stronger than the nuclear DNA; that is why even unsolved cases from years ago use mtDNA typing as reference for possible conclusion.

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suppose a cell wishes to make a protein that has 100 amino acid. How many water molecules will be created in the making of this small protein?

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The answer is 99.

Amino acids contain a carboxyl group (carbon-containing) and an amino group (nitrogen containing). Proteins are made by forming peptide bonds between the carboxyl and amino group of amino acids.
If a protein is made of 100 amino acids, that means there are 99 peptide bonds (because the last, 100th amino acid will not bind the next (101st) amino acid). For each peptide bond that is created, one oxygen atom and two hydrogen atoms are taken. Therefore, one water molecule is created for each peptide bond. If there are 99 peptide bonds, 99 water molecules are created.

The first step in releasing the energy of glucose in the cells is known as

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Glycolysis as the first stage of cellular respiration.  The other stages are The Krebs Cycle and the Electron Transport chain

which advance in biotechnology has benefited mankind by providing a DNA catalogue for further research in genetics ans disease prevention

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I think the answer is Human Genome Project. The Human Genome Project was an intentional scientific research project with the goal of determining the sequence of nucleotide base pairs that make up human DNA, and of identifying and mapping all of the genes of the human genome from both a physical and a functional standpoint. Sequencing means determining the exact order of the base pairs in a segment of DNA. HGP is a primary method used to produce the finished version of the human genetic code is map-based, or bacterial artificial chromosome (BAC) sequencing. 
human genome project 

Why do people die?????

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were basically all made of water its harder to stay alive than it is to die. Any and everything can kill us. We die so we can start over again and again

If people from all of history did not die think of how overwhelming and crowded it’d be. Simply, there would be no room

The formal system for classifying and naming organisms was developed by The formal system for classifying and naming organisms was developed by Aristotle. Louis Pasteur. Carolus Linnaeus. Ignaz Semmelweis. Robert Koch.

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Answer: Carolus Linnaeus

Explanation:

The formal system of classification was introduced by a Swiss scientist named Carolus Linnaeus.

He first split living things into a general category called KINGDOM.

- The kingdom is further split into large smaller groups called PHYLUM (for animals) and DIVISION (for plants).

- Each phylum or division is broken down into CLASSES.

- Each class is broken down into ORDERS

- Orders into FAMILIES,

- Families into GENUS

- Genus into SPECIES

Thus, the linnaean system of classification from highest (most general category) to the lowest level is as follows: Kingdom --> phylum/division --> class --> order --> family --> genus --> species.

The initial increase in heart and breathing rates during the skin diving trip was probably a result of: a. activation of the sympathetic autonomic nervous system by the new experience. b. activation of the parasympathetic autonomic nervous system by the new experience. c. hypoxia caused by the inability of her blood hemoglobin concentration to supply sufficient oxygen for the strenuous exercise of swimming at sea level. d. elevated core body temperature caused by swimming in warm tropical waters.

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Answer:

a. activation of the sympathetic autonomic nervous system by the new experience.

Explanation:

The sympathetic division of the autonomic nervous system generates a flight or fight response. This is a series of physiological processes that start when a person has any stress, new experience or emergency conditions such as the first diving trip. One such response produced by activated sympathetic division is increased heart rate to pump more blood and deliver more oxygen to body cells and tissues. Also, the person experiences an increased breathing rate to compensate for the increased oxygen demand.