The structure of the DNA molecule is double helix and the RNA molecule is single helix.
How many helix DNA and RNA have?
100
A mutation is a change or damage in the DNA sequence of a gene,hat it alters the genetic message(protein) carried by the gene.
What is mutation?
100
The energy in Photosynthesis come from sunlight.
Where does energy come from?
100
Gene is a segment of DNA that codes for a protein and thus determines a trait.
What is a gene?
100
The nitrogenous bases are Adenine,Thymine,Guanine, and Cytosine.
What is the four kinds of nitrogen bases?
200
DNA and RNA control and direct the development and activities of the all the cells in an organism.
what are the functions of DNA and RNA?
200
A mutation occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene.
When would a mutation happen?
200
Photosynthesis take place in chloroplast.
What organelle does it take place in ?
200
No, only a fraction of the genes in a cell are expressed.
Do all of cells present all the time?
200
It's organic molecule.
What kind of molecules is the DNA?
300
DNA molecule: Adenine pairs to Thymine ; Cytosine pairs to Guanine.
RNA molecule: Adenine pairs to Uracil; Cytosine pairs to Guanine.
What is the pairing arrangement of nitrogen bases in DNA molecule and RNA molecule?
300
A characteristic of mutations is that they usually result in different genetic sequence.
What is a characteristic of mutations?
300
Photosynthesis is the process by which, in the presence of light, plants, transform carbon dioxide and water into glucose, and they also release oxygen.
What is Photosynthesis?
300
Body cells are so different in structure an function because they use DNA in different ways.
Why the body cells different in structure an function?
300
Phospate group connects with deoxyribose(suger). Nitrogen base(C with G, A with T),phosphate with sugar.
Where is the nucleotide molecules connect to each other?
400
DNA base sequence → Amino acid sequence → Protein shape → Protein function → Trait
What is the sequences between DNA and the traits of an organism?
400
A change in the order of DNA bases that code for a respiratory protein will most likely cause a change in sequence of amino acids determined by the gene.
What decide a change in the order of DNA bases ?
400
Photosynthesis is important because it produces glucose or food, and it releases oxygen for cell respiration.
Why Photosynthesis is important？
400
They use DNA in different ways. They translate different genes to make different proteins and to perform different functions.
Why cells with identical genetic instruction are so different?
400
The shape of the DNA molecule resembles the shape of a ladder the sides of the ladder are made up of dioxyribose and phosphate group and the rungs are made up of Nitrogen bases.
What is the shape of the DNA molecule ?
500
1.The ribosome binds to a mRNA strand at the start codon(AUG). 2.tRNA brings the first amino acid to the ribosome. 3.A second tRNA links to a second codon in the mRNA. 4.The first and second amino acids bind together. 5.A third tRNA brings a third amino acid to the ribosome. 6.The first tRNA without amino acid leaves the ribosome. 7.Many amino acids bind together and make a poplypeptide(Protein). 8.Stop codon indicates the end of translation.
What is the order to describe the process of translation?
500
Mutagens, such as: - Ultraviolet radiation
- Cosmic rediation
- X-ray radiation
- Chemical Mutagens
What is the environmental factor that could cause a base sequence in DNA to be changed to a different base sequence?
500
Photosynthesis is directly used by autotrophs to store energy in glucose.
Which process is directly used by autotrophs to store energy in glucose?
500
Both the internal and external environment of the cell can influence which genes are activated in that cells.The environment can also influence human genes.
What can influence human genes?
500
To solve and transmit genetic information from one Generation of an organism to the next.