Are genes acidic or basic?
A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins. However, many genes do not code for proteins.
What is the chemical nature of chromosome?
The chemical composition of a chromosome is DNA and histone proteins. The DNA molecules are very long, yet they are packed with the help of positively charged histones into a smaller diameter.
Is DNA an acid?
You’re right: DNA is built of both acidic and basic components. The acidic component of DNA is its phosphate group, and the basic component of DNA is its nitrogenous base. … The nitrogenous bases are called adenine (A), guanine (G), thymine (T), and cytosine (C).
What are chromosomes made of?
A chromosome is made up of proteins and DNA organized into genes. Each cell normally contains 23 pairs of chromosomes.
Which one is part of chromosome?
(1) Chromatid – one of the two identical parts of the chromosome after S phase. (2) Centromere – the point where the two chromatids touch. (3) Short arm (p). (4) Long arm (q).
What is the difference between chromosomes and genes?
Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person’s genes. Genes are contained in chromosomes, which are in the cell nucleus.
What are functions of chromosome?
The most important function of chromosomes is to carry the basic genetic material – DNA. DNA provides genetic information for various cellular functions. … Thus, chromosomes also perform the function of protecting the genetic material (DNA) from damage during the process of cell division.
What are organisms with 2 1 n chromosomes called?
In sexually reproducing organisms, the number of chromosomes in the body (somatic) cells typically is diploid (2n; a pair of each chromosome), twice the haploid (1n) number found in the sex cells, or gametes.
How many chromosomes do humans have?
In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46. Twenty-two of these pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females.
Is RNA an acid?
RNA, or ribonucleic acid, is a nucleic acid that is similar in structure to DNA but different in subtle ways.
Is RNA an amino acid?
RNA and deoxyribonucleic acid (DNA) are nucleic acids. … This process uses transfer RNA (tRNA) molecules to deliver amino acids to the ribosome, where ribosomal RNA (rRNA) then links amino acids together to form coded proteins.
Is nitrogen a base?
Nitrogenous base: A molecule that contains nitrogen and has the chemical properties of a base. The nitrogenous bases in DNA are adenine (A), guanine (G), thymine (T), and cytosine (C). The nitrogenous bases in RNA are the same, with one exception: adenine (A), guanine (G), uracil (U), and cytosine (C).
How are chromosomes different between prokaryotes and eukaryotes?
Eukaryotic chromosomes are located within the nucleus, whereas prokaryotic chromosomes are located in the nucleoid. The key difference between prokaryotic and eukaryotic cells is that eukaryotic cells have a membrane-bound nucleus (and membrane-bound organelles), whereas prokaryotic cells lack a nucleus.
How do prokaryotic cells divide?
Unlike eukaryotes, prokaryotes (which include bacteria) undergo a type of cell division known as binary fission. In some respects, this process is similar to mitosis; it requires replication of the cell’s chromosomes, segregation of the copied DNA, and splitting of the parent cell’s cytoplasm.
How do chromosomes divide?
During mitosis, a cell duplicates all of its contents, including its chromosomes, and splits to form two identical daughter cells. … It is a two-step process that reduces the chromosome number by half—from 46 to 23—to form sperm and egg cells.