Question

Prepare a model of DNA and give a presentation based on it

Answer 1

DNA,shortfordeoxyribonucleic acid, is themoleculethat contains thegeneticcode oforganisms. This includesanimals,plants,protists,archaeaandbacteria.DNA is in eachcellin the organism and tells cells whatproteinsto make. Mostly, these proteins areenzymes. DNA isinheritedby children from their parents. This iswhy children sharetraitswith their parents, such as skin, hair and eye color. The DNA in a person is a combination of the DNA from each of their parents.Part of an organism's DNA is "non-coding DNA" sequences. They do not code for protein sequences. Some noncoding DNA is transcribed intonon-coding RNAmolecules, such astransfer RNA,ribosomal RNA, andregulatory RNAs. Other sequences are not transcribed at all, or give rise to RNA of unknown function. The amount of non-coding DNA varies greatly among species. For example, over 98% of the human genome is non-coding DNA,[1]while only about 2% of a typicalbacterialgenomeis non-coding DNA.Virusesuse either DNA orRNAtoinfectorganisms.[2]Thegenomereplicationof most DNA viruses takes place in the cell'snucleus, whereas RNA viruses usuallyreplicate in thecytoplasm.Structure of DNADNA has a doublehelixshape, which is like a ladder twisted into aspiral. Each step of the ladder is a pair ofnucleotides.

Answer 2

Answer:

• Constructing DNA models is a great way to learn about DNA structure, function, and replication. DNA models are representations of the structure of DNA. These representations can be physical models created from almost any type of material or they can be computer generated models.

DNA was discovered by James Watson and Francis Crick in the 1950's.

• DNA is a type of macromolecule known as a nucleic acid. It is shaped like a twisted double helix and is composed of long strands of alternating sugars and phosphate groups, as well as nitrogenous bases (adenine, thymine, guanine and cytosine). DNA controls cellular activity by coding for the production of enzymes and proteins. The information in DNA is not directly converted into proteins, but must first be copied into RNA in a process called transcription.

DNA Model Ideas

• DNA models can be constructed from almost anything including candy, paper, and even jewelry. An important thing to remember when constructing your model is to identify the components you will use to represent the nucleotide bases, sugar molecule, and phosphate molecule. When connecting the nucleotide base pairs be sure to connect the ones that pair naturally in DNA. For example, adenine pairs with thymine and cytosine pairs with guanine. Here are some excellent activities for constructing DNA models:

DNA Models: Science Projects

• For those interested in using DNA models for science fair projects, remember that simply constructing a model is not an experiment. Models may be used, however, to enhance your project

I hope it will help u