16
Death.
Base, ion,
DNA is composed of four different base groups, which can form endless numbers of different sequences, which have the capacity to synthesize a wide variety of protein molecules, or to synthesize RNA which will synthesize protein molecules, and these protein molecules are the basis of all biochemistry; they form the catalysts and structural elements which create, regulate, and maintain all living organisms.
Neither. The leaves of the tree represent descendants; the root or base represents the common ancestor of all organisms in that tree. This says nothing about which have survived and which have become extinct, only which appeared first and which developed from it.
Carbon, hydrogen, oxygen, and nitrogen are the four key elements that combine in various ways to form molecules in organisms. These elements are crucial for the structure and function of biological molecules such as carbohydrates, lipids, proteins, and nucleic acids.
Carbon is the base element for all organic substances. Organic compounds contain carbon-hydrogen bonds and are found in living organisms.
The sequences for nitrogen bases for all living organisms is what makes up DNA and therefore their genes.
Nucleic acids, such as DNA and RNA, are primarily composed of three key elements: carbon (C), hydrogen (H), and oxygen (O), along with nitrogen (N) and phosphorus (P). These elements form the building blocks of nucleotides, which consist of a sugar, a phosphate group, and a nitrogenous base. The sequence of these nucleotides encodes genetic information essential for the functioning and reproduction of living organisms.
A stands for a purine base found in DNA and RNA; it pairs with thymine in DNA and with uracil in RNA
It was DNA molecule
Primary producers, such as plants and phytoplankton, are the organisms that comprise the greatest mass of living substance in a terrestrial food chain. They are responsible for converting sunlight into energy through photosynthesis, forming the base of the food chain and providing energy for all other organisms.
The four base pairs of DNA (adenine, thymine, cytosine, and guanine) form the genetic code that determines an organism's traits and functions. Through the sequence of these base pairs, DNA carries instructions for making proteins, which are essential for the structure and function of cells. This genetic information is passed on from one generation to the next, allowing living organisms to grow, develop, and reproduce.