ipl-logo

Purpose Of Dna In A Cell Study Guide

770 Words4 Pages

What is the purpose of DNA in a cell?
• DNA or Deoxyribonucleic acid is a nucleic acid that contains the genetic instructions for the development and function of living things; all known cellular life and some viruses contain DNA.
• The main role of DNA in the cell is the long-term storage of individual information and replication of the cell organism.

Why can’t you see the double helix with the naked eye?
• Double Helix: the structure formed by the double-stranded molecules of nucleic acids such as DNA
The double helix structure cannot be seen by the naked eye as the width of the DNA Double Helix is approximately one billionth of a meter, while human eyes cannot distinguish objects less than 0.02mm wide. An optical light microscope would …show more content…

• The DNA Extraction process ‘breaks down’ the Plasma Membrane surrounding the Cell and the Nucleus containing the Strawberry's DNA. The Plasma Membrane is composed of a phospholipid Bilayer with Proteins embedded within it. Each phospholipid molecule consists of two fatty acid chains joined to a phosphate-containing group. The phosphate-containing group of a phospholipid molecule constitutes its hydrophilic head. The fatty acid chains constitute the hydrophobic tail of each phospholipid molecule.
• This allows the salt Water in the Extraction Buffer to draw the water from the Vacuole through the process of Osmosis, leaving the DNA to combine together.

What possible benefits might be obtained by the ability to isolate the DNA of any …show more content…

- The DNA in an Animal cell would appear in larger quantities when compared to Plant Cells, the complexity of the Animal cell would also be greater than that of a Plant cell.
- The cells of all animals and plants contain DNA in a Double Helix form, produced using the same four chemical nucleotides.
- The plant cell has a rigid Cell Wall and a large Vacuole in comparison to the Animal Cell which has a relatively small Vacuole and is WITHOUT a Cell Wall. The passive diffusion process of Osmosis when regarding the Extraction Buffer and the Salt to Water concentration, would be smaller in the Animal cell due to the lack of a large Vacuole (amount of water); therefore the Water-Alcohol interface would become smaller resulting from the lack of water.
- The Animal cell would also be without a Cell Wall, allowing the DNA to be released more efficiently and in greater quantities when regarding their complexity.

Which ‘ingredient’ do you think might have the most effect on the amount of DNA you extract – How can you test your hypothesis? Briefly describe an experiment to test your

Show More
Related

Food Vacuoles Lab Report

502 Words | 3 Pages

We then obsevered the two slides for number of cells as well as for food vacuoles inside a cell using a microscope at times of 0,5,10,20, and 30 minutes. Results The following graphs show the results of this experiment. The tetrahymena sample that was introduced to concentrated tobacco had a lower cell/vacuole ratio than the tetrahymena sample that was not exposed to

Read More

Rhubarb Osmosis Lab Report

1127 Words | 5 Pages

Additionally, it was difficult obtaining a piece of rhubarb that was thin and particularly red, therefore the effect could not be best observed in the cells. Part B: Design your own experiment Parts of this practical were taken and slightly altered from the following link http://www.markedbyteachers.com/gcse/science/investigate-the-effect-of-surface-area-on-osmosis-in-potato-tissue.html Aim: To observe the effect different surface area: volume ratios have on osmosis in potato tissue. Hypothesis: If the potato has a larger surface area: volume ratio, the quicker osmosis will take place and the larger the mass will be at the end of the experiment, therefore the difference in mass of the potatoes from the start of the experiment to the end of the experiment will be larger. Additionally, the potato pieces left in a saltwater solution will decrease in mass, whereas the pieces left in water will increase in mass.

Read More

Malcified Egg Lab Report

1037 Words | 5 Pages

Osmosis can be found in many forms throughout everyday human life. For example, meat and fruits are preserved in salt and sugar, respectively. In these cases, the solute concentration is higher than that of the bacterial cytosol. The result of this state is that the bacteria, which would normally consume and deteriorate the food, cannot survive as the water will leave their cells to enter the area of increased concentration. The osmosis studied in this experiment illustrates why the bacteria cannot survive, as the eggs in the hypertonic solution lost volume, as a bacteria in salt or sugar would (Janardan

Read More

Beta Vulgaris Cell Lab Report

1061 Words | 5 Pages

More specifically the aim was to investigate what effect 40% and 70% ethanol solutions had on a B. Vulgaris cell membrane and then compare them to the same test with distilled water. It was hypothesised that the ethanol solution would increase the membrane permeability. From the results the hypothesis can be supported. Cell membranes are a core aspect of understanding cells which helps to understand humans and other living creatures. Therefore the topic of cell membranes has been extensively researched, meaning that there is no limit to information and sources of information of the subject.

Read More

Cytosin And Guanine Links To Adenine

407 Words | 2 Pages

DNA possesses the code for genetic information but does not undertake that data on its own, which is why we bring it into being by the activity of transcription; a messenger identified as mRNA. Once the mRNA is brought into existence, the following step is to move the mRNA out of the nucleus and into the cytoplasm then evoke ribosomes that contain a similar letter coding. The initial step of replicating DNA is through the establishment of mRNA. The DNA helicase connects to the DNA molecule opening the double helix which then lets enzymes fracture the hydrogen bonds in the middle of the base pairs. Nucleotides making their way into the nucleus arrange hydrogen bonds in relation to their sets (cytosine to guanine and thymine to adenine.)

Read More

Wrongful Conviction Examples

1168 Words | 5 Pages

Deoxyribonucleic acid (DNA) is a molecule found in all forms of life that is passed down from parents to offspring. What makes each DNA unique is the chemical makeup of the molecule sometimes referred to as the “blueprint of life.” (BIO). DNA is made up of nucleotides consisting of a sugar, a phosphate and a base pair. About six million nucleotide base pairs make up DNA in each cell.

Read More

Is Dna Useful For Police Investigation

745 Words | 3 Pages

Lesly Rodriguez Biology January 23, 2018 DNA is a long skinny molecule made up of nucleotides; the nucleotides consists of adenine, thymine, cytosine, and guanine. DNA also carries genetic information in cells and some viruses which forms two long lines of nucleotides twisted like a zipper known as the double helix. DNA can be extracted and kept in a database from having samples such as hair, saliva, fingertips, etc; the purpose of keeping it in a database is in order to secure vital information of an individual’s privacy and use it for an important event. The city of Chicago should make it mandatory for individuals and newborn babies to submit their DNA into a database. I foresee this due to solving crime efficiently, knowing circumstances that are from relatives, and the scientific method cures for the circumstances.

Read More

Dna Vs Deoxyribose

257 Words | 2 Pages

DNA is deoxyribonucleic acid, a self-replicating material present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information. RNA is ribonucleic acid, a nucleic acid present in all living cells. Its principal role is to act as a messenger carrying instructions from DNA for controlling the synthesis of proteins, although in some viruses RNA rather than DNA carries the genetic information. DNA contains the sugar deoxyribose, while RNA contains the sugar ribose.

Read More

Dna Research Paper

1194 Words | 5 Pages

In Prokaryotes, the DNA is found in the cytoplasm. Single-celled organisms don’t have nuclei, so Deoxyribonucleic acid is found in the Cytoplasm. The backbone, the two strands that twist to form the side bars of the Double helix, is made of alternating phosphate groups and Deoxyribose (a sugar) molecules. That’s how Deoxyribonucleic acid got part of its name. Also, the the Deoxyribose and Phosphate alternates along the backbone.

Read More

Why Is DNA Important?

440 Words | 2 Pages

DNA The molecules that make up DNA are called nucleotides. These molecules are made up of sugar, a nitrogen base, and phosphate. The nitrogen bases are guanine, adenine, cytosine, and thymine. DNA is a structure that carries genetic material and is present in nearly all living organisms.

Read More

The Pros And Cons Of DNA Technology

1322 Words | 6 Pages

DNA technology is the study of genetic material. Scientists are now using DNA technology for a variety of purposes, for example cloning. Cloning is the process of making multiple or identical copies of a gene. DNA technology has had major impacts on agriculture, disease therapy, crime scene investigations and the pharmaceutical industry. But like anything in science it also has its ethical, legal, and social concerns that play a major part in our applications today.

Read More

E. Colo Transformation Lab Report

595 Words | 3 Pages

Then, the cell contents and DNA are released to the outside of the cell. The lysis buffer added causes the double stranded DNA in the cell to become single stranded DNA by disrupting the hydrogen bond between the bases. Next, acid is added to neutralize back the DNA to form double stranded DNA again. After centrifuge, the supernatant is collected as that is the plasmid while the pellet is the debris including protein and lipids. Protein and lipids are basically heavier than plasmid

Read More

DNA In Forensic Science

1116 Words | 5 Pages

DNA in Forensic Science DNA is the carrier of genetic information in humans and other living organisms. It has become a very useful tool in forensic science since it was discovered. In forensic science, DNA testing is used to compare the genetic structure of two individuals to establish whether there is a genetic relationship between them. One example of the use of DNA in forensic science that is important in biology today is comparing a suspect’s DNA profile to DNA that was discovered at a crime scene.

Read More

Deoxyribose Lab

2057 Words | 9 Pages

The DNA gathered by the group bore positive results only on Test for Deoxyribose; compared to the standard solution, which bore positive results on all chemical tests, namely, Test for Deoxyribose, Test for Phosphate, Test for Purines, and test for Pyrimidines. Introduction Nucleic Acid is one of the essential biochemical molecules

Read More

Importance Of Dna In Forensic Science

1251 Words | 6 Pages

DNA in forensic science The majority of cells making up the human body are diploid cells carrying identical DNA, with the exception of haploid gametes and red blood cells. Several types of biological evidence such as blood and hair are commonly used in forensic science, which is the scientific study of evidence for crime scene investigations and other legal matters. Forensic science is used for the purpose of DNA analysis, this is the analysis of DNA samples to determine if it came from a particular individual. DNA analysis is done by obtaining DNA samples from an individual; next, a large sample of DNA is produced from amplified selected sequences from the DNA collected.

Read More

More about Purpose Of Dna In A Cell Study Guide

Related Topics

Open Document