What is the test used at a crime scene to enhance a bloodstain to make it more visible in photographs?

What is the test used at a crime scene to enhance a bloodstain to make it more visible in photographs?

Luminol
Luminol is a chemical that when applied to bloodstains, even very dilute bloodstains, will cause the bloodstains to glow in the dark. Because it has several drawbacks as a presumptive test for blood, spraying luminol at a crime scene should be an investigator’s last resort for detecting blood.

Which of your body cells carries proteins that determine your blood type *?

Mandira P. Blood type or blood group is determined by presence of specific molecules on cell membrane of Red Blood Cells (RBCs). These molecules are considered to be antigenic.

What does the abbreviation BPA represent?

BPA stands for bisphenol A, an industrial chemical that has been used to make certain plastics and resins since the 1950s. BPA is found in polycarbonate plastics and epoxy resins. Polycarbonate plastics are often used in containers that store food and beverages, such as water bottles.

What is the most abundant cells in our body that are produced in the bone marrow?

Most red blood cells, platelets, and most white blood cells form in the red bone marrow. Yellow bone marrow produces fat, cartilage, and bone. White blood cells survive from a few hours to a few days, platelets for about 10 days, and red blood cells for about 120 days.

What indicates the presence of a specific protein?

Protein electrophoresis is a method for separating the proteins found in blood (serum) or urine. Each band indicates the presence of a particular protein, while the intensity of the staining of the band is a rough indication of the quantity.

What does the stringing method tell an analyst?

In the stringing method, which is still used by many analysts, the analyst documents the location of each spatter using the coordinate system. Then, he or she establishes a level line to show how the spatter is oriented in relation to the floor and ceiling.

What two proteins are responsible for determining blood type?

The Molecular Basis of ABO Genes The A and B transferases are both proteins, and each is 354 amino acids long.

What is BPA education?

BPA is a national co-curricular career and technical organization for high school, college and middle school students preparing for careers in business and information technology. BPA has more than 55,000 members in over 2,300 chapters in 23 states, and we are growing!

What is BPA in agriculture?

Bisphenol A (BPA) is a chemical that is present in a multitude of plastic products and can break down or leach into the material around it. Books and Materials on Bisphenol A in the NAL Catalog (AGRICOLA) National Agricultural Library (United States Department of Agriculture).

Why do you think the defense mechanisms we have discussed thus far?

Why do you think the defense mechanisms we have discussed thus far in this unit are considered “non-specific” resistance? The defense mechanisms are nonspecific because they can protect the body from many different type of foreign invaders.

How will you identify the presence of specific protein in a live cell?

Today large numbers of proteins are being tracked in living cells by using a fluorescent marker called green fluorescent protein (GFP). The energy transfer, called fluorescence resonance energy transfer (FRET), is determined by illuminating the first fluorochrome and measuring emission from the second (Figure 8-49).

How does colinearity of genes and proteins apply to eukaryotes?

The principle of colinearity of genes and proteins does not apply to eukaryotes because. most eukaryotic genes contain introns. Regulatory proteins control transcription initiation by modulating the ability of DNA polymerase to bind to the promoter.

Which is an example of a tertiary protein structure interaction?

For example, the mutual attraction between an aspartic acid carboxylate ion and a lysine ammonium ion helps to maintain a particular folded area of a protein (part (a) of Figure 9.5 “Tertiary Protein Structure Interactions”). 2. Hydrogen bonding.

Why are proteins not classified as carbohydrates or lipids?

Proteins are compounds of high molar mass consisting largely or entirely of chains of amino acids. Because of their great complexity, protein molecules cannot be classified on the basis of specific structural similarities, as carbohydrates and lipids are categorized.

When does a protein contain more than one polypeptide?

When a protein contains more than one polypeptide chain, each chain is called a subunit. The arrangement of multiple subunits represents a fourth level of structure, the quaternary structure of a protein.