Answer:
2. is the first, 1. is the second, and the 3. is the last one.
Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA).
Answer:
D. Tt with Tt
Explanation:
In the given question, the student wants to study the stem length in the plants which are controlled by the T (dominant) and t (recessive) alleles.
To study the monohybrid cross for the stem length, the student must cross the heterozygous forms of the gene for the trait as it will produce the mixture of variables of height.
cross- Tt x Tt
T t
T TT Tt
t Tt tt
1. Genotype TT - tall height
2. Genotype Tt- tall height
3. Genotype tt- small height
Thus, Option-D is correct answer.
Answer:
The correct answer is B. All organisms would appear purple (gram-positive).
Explanation:
Gram staining is done to differentiate between gram positive and gram negative bacteria. Gram positive bacterial cell wall is made up of peptidoglycan which dehydrates and shrinks after decolorizing step and large crystal violet and iodine complex do not comes out making them purple in this process.
But in gram negative bacteria the cell wall is made up of lipids in which the crystal violet-iodine complex comes out due to the degradation of lipid by decolorizer.
So when the student forgot to decolorize bacterial sample crystal violet do not comes out from gram negative cell wall making them purple like gram positive cells. So all organism will appear purple.
Answer:
A.
Explanation:
A.
A complete protein is a food source that contains all the essential amino acids.