how are fingerprints discovered at crimes?

Answers

Answer 1
How are fingerprints discovered at crime scenes?

They are discovered by either ultra-violet imaging system, or by fingerprint powders.
Answer 2

Answer:

Explanation:

Fingerprints are the impressions that are left over any surface. These consists of the characteristics of the friction ridge skin of the human finger. The oil, dirt, blood, other liquid stains can be responsible for the development of the impression over the surface.

The latent or hidden prints can be observed and discovered by utilizing the powder technique, using the chemical reagents and utilization of UV or alternating light sources.


Related Questions

Briefly describe how physical geology and historical geology are different

Answers

Physical geology is the branch of geology that is concerned with what is happening on Earth in the here and now. Physical geologists study rock and mineral formation, active erosion, volcanic eruptions, and earthquakes. They also look at land use and pollution issues and assist in the search for natural resources like oil and natural gas.

Physical geologists can work in a variety of capacities, ranging from environmental monitoring to agricultural soil analysis to water resources management.

Exploratory geologists who are on the hunt for fossil fuels often find it difficult to do their job if they don't completely understand the past history of the area they are working in, in terms of its geology. Historical geology is the branch of geology that looks at preserved evidence of geological events that occurred in the past. Historical geologists may use their knowledge to reconstruct past landforms such as Pangea, a 'supercontinent' that existed during the Paleozoic and Mesozoic eras. These researchers might also look for evidence of past flooding in an area.(Hope it helps <3)



In the early 1800s, _____________ was the medical doctor's most reliable and effective medicine that was used for a variety of conditions, but mainly for pain relief.

Answers

Opium was the medical doctor's most reliable and effective medicine that was used for a variety of conditions, especially for pain relief. It really blocked all of the cells that travel through the body to make us a feel pain. The opium was a good drug of choice to dull that pain. Nowadays, doctor's no longer use this method of treatment.

A normal sinus rhythm set by the sa node is between _____ and _____ beats per minute.

Answers

60 and 100


Hope that helps, Good luck! (:

What factor would account for a strong synovial joint? what factor would account for a strong synovial joint? small reinforcing ligaments synovial fluid low muscle tone the deepest articular surface?

Answers

Final answer:

The strength of a synovial joint is largely influenced by the ligaments that reinforce it, along with the presence of an articular disc and the supportive role of muscles and tendons.

Explanation:

Factors that contribute to the strength of a synovial joint include the robustness and arrangement of ligaments that surround and reinforce the joint. These ligaments hold the bones together and prevent excessive or abnormal joint motions. Moreover, the presence of an articular disc, such as a meniscus, can enhance the stability and strength of a synovial joint by providing additional cushioning, smoothing bone movements, or binding the bones more firmly. It's also important to acknowledge that muscles and their tendons contribute to joint strength by providing contractile force that indirectly supports the joint during movement.

________ is the process by which bacteria return nutrients to the soil

Answers

Nitro fixation is the process in which bacteria returns nutrients to the soil

​in which would the letter "p" be fastest recognized by an individual who spoke english

Answers

I found the exercise on the internet and these were the options:
"-Help
-Pelh  
-Elhp  
-Pleh"

The letter "p" would be fastest recognised by an English speaker in "Help". Letters are more recognisable when they are in a context that's known. If any of the other words was given to an English speaker to memorise, he would probably memorise the letter by letter, while with "help", he would be able to know straight way  what letters were contained in it without having to make a conscious effort to memorise them one by one. Because of this, the letter "p", for an English speaker would be the fastest recognised in the word "help" rather then in other unknown word.

Variation within organisms within a species increases the chance that a species will survive changing conditions. What kind of reproduction produces the most variation within a species?

Answers

Sexual Reproduction with the most adapted organisms within the species 

A cell is a complex system. Like most systems, a cell contains a boundary that separates things that are inside the system from those that are outside of the system. Which part of the cell functions as a system boundary?

Answers

the cell membrane. it protects the cell from outside substances. it controls what can enter and leave the cell.

Which conditions are required for natural selection? Check all that apply.

Answers

Reproduction, Heredity, Variety in fitness of population, and variety in characters among the population are all four conditions for natural selection.

what are proteins made of?

Answers

proteins are made of amino acids that are joined together in chains
Proteins are each made up of amino acids from ribosomes. Ribosomes are organelles that produce protein. Amino acids make up proteins.

What is the macromolecule that builds both cilia and flagella?

Answers

Cilia, flagella, and centrioles. Cilia and flagella are projections from the outside of the cell. They are made up of microtubules and are covered by an extension of the plasma membrane. They are motile, meaning that they are mobile, and designed either to move the cell itself or to move substances over or around the cell.

Xeroderma pigmentosum is a severe, genetically linked skin cancer in which dna repair mechanisms are impaired. why would sufferers of this condition need to stay out of the sun?

Answers

Final answer:

Individuals with Xeroderma pigmentosum must avoid sun exposure due to damaged DNA repair mechanisms leading to a significantly higher risk of skin cancer and severe skin damage from UV light.

Explanation:

Sufferers of Xeroderma pigmentosum (XP) need to stay out of the sun due to their impaired DNA repair mechanisms, particularly the nucleotide excision repair (NER) mechanism. This condition leads to an inability to repair thymine dimers and other bulky DNA adducts caused by exposure to UV light from the sun. These unrepaired thymine dimers distort the DNA structure, significantly increasing the risk of skin damage, skin lesions, and a high rate of sunlight-induced skin cancer.

The extreme photosensitivity displayed by individuals with XP, along with the potential for skin atrophy, hyperpigmentation, and even neurologic disorders, underscores the necessity for such individuals to limit sun exposure as much as possible.

Unfortunately, there is currently no effective treatment for XP, making sun avoidance and protection critical for managing this condition.

What effect does using plant food (Miracle Grow) have on plant growth?
Hypothesis

Answers

Miracle grow contains plant nutrients and micro nutrients. Plant nutrients are nitrogen, phosphorus and potassium, while micro nutrients are boron, calcium, magnesium. These nutrients will help the plant to be the plant to be more robust, faster and healthier. Also it will produce larger/more numerous flowers and fruits/vegetables will produce larger/more numerous fruit.

A bacterial gene (gene
a.ordinarily makes a protein that binds to dna. a mutation that causes the loss-of-function of gene a increases the expression of another gene, gene
b. we can conclude that

Answers

gene A is a negative regulator of gene B.
Gene A is a regulator of Gene B

Escherichia coli is a prokaryotic bacterium. How will Escherichia coli reproduce?

Answers

Answer:

The correct answer is binary fission

Explanation:

Prokaryotes or bacteria divide through an asexual mode of reproduction called "Binary fission".

The E.coli divides to produce genetically identical daughter cells which initiate when parent cell elongates which is replicated by the formation of the septum. After the formation of a septum, the cellular component is equally divided into the daughter cell along with the genome which moves to each side of the cell.

Thus, binary fission is the correct answer.

When someone dies of the red death there is profuse bleeding?

Answers

“The masque of the red death” is a short story written by Edgar Allan Poe. It features a impressive dance flung by a man who is immature to consider that he can discharge his own fate. It is considered abundant when someone dies of the red death and there is a perfuse bleeding. 

Abundant bleeding (C)

________ cells are cells that are referred to by a formula in another cell.

Answers

Answer:

Precedent Cells

Precedent cells are the cells that are referred to by a formula in another cell.

What are Precedent cells?

Precedent cells are the cells that are referred to by a formula in another cell in the excel sheet. For example, if cell named D10 contains the formula =B5, then cell B5 is a precedent to cell D10. The dependent cells are these cells which contain formulas which refer to other cells in the sheet.

In Microsoft Excel, trace precedents and trace dependents are used to locate the cells that contain the formula. Trace Precedents indicates the cells that affect the active cell's value and Trace Dependents indicates the cells affected by the active cell.

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Which interview technique should you use when addressing a geriatric patient?

Answers

Hello!

I believe the correct answer would be: Listen carefully to the answers the patient provides and speak loudly and slowly.

I hope my answer benefited you! c:

A tetraploid organism has four copies of each chromosome in a single cell. how many copies of each chromosome end up in a gamete?

Answers

Two copies end up in a gamete.

During a menstrual cycle, what is the purpose of the uterine lining build-up?

Answers

The answer to this question would be: to prepare for pregnancy.

If fertilization happens, the egg will need to attach itself to the uterus. A failure in implantation process will cause it to develop a disease or abortion. In implantation, the gamete will dig up the uterus before attaching it. After that, the embryo can connect to some blood vessel and able to take nutrient from the mother blood.

which of the following conditions characteristics atomospere 111

Answers

The condition is which characteristics of atmosphere III is nitrogen-rich and oxygen-poor. Nitrogen-rich is one of the condition in which the atmosphere III characterizes. The other is oxygen-poor, is one of the condition characterizes atmosphere III. Nitrogen-rich material mostly called green because they are greenish in color. Oxygen-poor means the blood enters the RA or Right atrium or the upper chamber of the heart.

The process of breaking food into components small enough to be absorbed is called

Answers

The Digestive proccess

explain why asexual processes are important to organisms that reproduce from two parents

Answers

Asexual reproduction is important because it can produce many off springs without finding a mate it is independent. Forms of life can't survive without reproduction. Asexual reproduction is reproduction without sex. In this form of reproduction, a single organism or cell makes a copy of itself.  They are clones. The main process of asexual reproduction is mitosis. 

Asexual reproduction

Is a kind of reproduction through which generation arise from a unique organism. The inherit of the genes of a specific mother and father only. It does not include the union of gametes that essentially never improve the number of chromosomes. Asexual reproduction is the main method of reproduction for single-celled bodies example archaea and bacteria.

This is a scaffolding of protein fibers that help a cell keep its shape, and assist cell division and cell movement.

Answers

The answer is tissue. Hope this helped!
cell membrane I think

Differentiating cells delete the dna for genes they do not need.
a. True
b. False

Answers

The answer is false

When the cells are differentiating in the embryo, they retain the same genetic material. However, certain genes in the differentiating cells are silenced using protein complexes called histones. This makes the genes inaccessible to RNA. Therefore, the process of transcription required in the expression of genes is restricted. 

An example of a dependent variable in an experiment might be _____. eye color level of depression gender blood type

Answers

Level of depression/////////////

Monomers linked together to form a polymer could be described as beads in a multicolored necklace. Which one of the following statements about monomers is true with respect to the above analogy? Monomers in a polymer could be linked in various ways. Monomers in a polymer are of different types. Monomers in a polymer look different but are structurally similar.

Answers

Monomers linked together to form a polymer could be described as beads in a multicolored necklace because monomer in a polymer are of different types.

Monomers are small molecules that can be joined together to form larger molecules called polymers. In the analogy of beads on a string, monomers can be structurally similar or different, akin to various beads, and linked in many ways to create complex polymers.

In the analogy where monomers are being compared to beads in a necklace to describe polymers, monomers are the individual units that can be linked together in a chain to form a polymer. Monomers can be structurally similar or different and can be linked in various ways to produce complex polymers, analogous to how different colored beads can be strung together to create a multicolored necklace. Looking at the nature of monomers, we can deduce that monomers are indeed small molecules that are repeatedly connected by covalent bonds to form larger molecules, known as polymers. These monomers in a polymer could be of different types depending on the complexity and the function of the polymer formed.

A chemical that removes the amine groups from certain nucleotides would be classified as __________.

Answers

Nucleotides are the building blocks of DNA, which comprises genetic material of an organism. Chemical or physical agents that cause changes in this genetic material are called mutagens. 

The chemical mentioned above would be classified as a chemical modifying mutagen, particularly a deaminator, which is a (nucleotide) base-modifying agent that removes amino groups from the nucleotides. 

Audrey drove 50 miles in 2 hours. What was her average speed?

Answers

50 miles/2 hours
25 miles per hour or mph

Hope this helps!
Final answer:

Audrey's average speed was 25 miles per hour.

Explanation:

The average speed is calculated by dividing the total distance traveled by the total time taken. In this case, Audrey drove 50 miles in 2 hours, so her average speed would be 25 miles per hour. This means that on average, Audrey was driving at a speed of 25 miles per hour throughout her journey.

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What elements make up molecules of sugar?

Answers

Exploratorium. The white stuff we know as sugar is sucrose, a molecule composed of 12 atoms of carbon, 22 atoms of hydrogen, and 11 atoms ofoxygen (C12H22O11). Like allcompounds made from these three elements, sugar is a carbohydrate.
It's literally a BUNCH of carbon stuck together, with hydrogen and oxygen. The chemical formula is C12H22O11.
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