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Albert L. Lehninger
19 quotes
“Biochemistry asks how the remarkable properties of living organisms arise from the thousands of different biomolecules.”
Albert L. Lehninger (1917–1986) said by 1986 at the latest wikiquote, CC BY-SA 4.0 source
“Organisms possess extraordinary attributes, properties that distinguish them from other collections of matter. What are these distinguishing features of living organisms?”
Albert L. Lehninger (1917–1986) said by 1986 at the latest wikiquote, CC BY-SA 4.0 source
“Despite these common properties, and the fundamental unity of life they reveal, it is difficult to make generalizations about living organisms.”
Albert L. Lehninger (1917–1986) said by 1986 at the latest wikiquote, CC BY-SA 4.0 source
“The unity and diversity of organisms become apparent even at the cellular level.”
Albert L. Lehninger (1917–1986) said by 1986 at the latest wikiquote, CC BY-SA 4.0 source
“Cells of all kinds share certain structural features.”
Albert L. Lehninger (1917–1986) said by 1986 at the latest wikiquote, CC BY-SA 4.0 source
“The upper limit of cell size is probably set by the rate of diffusion of solute molecules in aqueous systems.”
Albert L. Lehninger (1917–1986) said by 1986 at the latest wikiquote, CC BY-SA 4.0 source
“All living organisms fall into one of three large groups (domains) [Bacteria, Archeara, Eukarya] that define three branches of evolution from a common progenitor.”
Albert L. Lehninger (1917–1986) said by 1986 at the latest wikiquote, CC BY-SA 4.0 source
“The distinguishing characteristics of eukaryotes are the nucleus and a variety of membrane-enclosed organelles with specific functions.”
Albert L. Lehninger (1917–1986) said by 1986 at the latest wikiquote, CC BY-SA 4.0 source
“The current understanding that all organisms share a common evolutionary origin is based in part on this observed universality of chemical intermediates and transformations, often termed "biochemical unity.”
Albert L. Lehninger (1917–1986) said by 1986 at the latest wikiquote, CC BY-SA 4.0 source
“The chemistry of living organisms is organized around carbon, which accounts for more than half the dry weight of cells.”
Albert L. Lehninger (1917–1986) said by 1986 at the latest wikiquote, CC BY-SA 4.0 source
“We can consider cellular energy conversions—like all other energy conversions—in the context of the laws of thermodynamics.”
Albert L. Lehninger (1917–1986) said by 1986 at the latest wikiquote, CC BY-SA 4.0 source
“Virtually every chemical reaction in a cell occurs at a significant rate only because of the presence of enzymes.”
Albert L. Lehninger (1917–1986) said by 1986 at the latest wikiquote, CC BY-SA 4.0 source
“Perhaps the most remarkable property of living cells and organisms is their ability to reproduce themselves for countless generations with nearly perfect fidelity. This continuity of inherited traits implies constancy, over millions of years, in the structure of the molecules that contain the genetic information.”
Albert L. Lehninger (1917–1986) said by 1986 at the latest wikiquote, CC BY-SA 4.0 source
“Among the seminal discoveries in biology in the twentieth century were the chemical nature and the three-dimensional structure of the genetic material, deoxyribonucleic acid, DNA.”
Albert L. Lehninger (1917–1986) said by 1986 at the latest wikiquote, CC BY-SA 4.0 source
“The remarkable similarity of metabolic pathways and gene sequences across the phyla argues strongly that all modern organisms are derived from a common evolutionary progenitor by a series of small changes (mutations), each of which conferred a selective advantage to some organism in some ecological niche.”
Albert L. Lehninger (1917–1986) said by 1986 at the latest wikiquote, CC BY-SA 4.0 source
“The first living organisms on Earth doubtless arose in an aqueous environment, and the course of evolution has been shaped by the proper ties of the aqueous medium in which life began.”
Albert L. Lehninger (1917–1986) said by 1986 at the latest wikiquote, CC BY-SA 4.0 source
“As a result, there is an electrostatic attraction between the oxygen atom of one water molecule and the hydrogen of another (Fig. 2-lb), called a hydrogen bond.”
Albert L. Lehninger (1917–1986) said by 1986 at the latest wikiquote, CC BY-SA 4.0 source
“Water is a polar solvent. It readily dissolves most bio molecules, which are generally charged or polar com pounds (Table 2-2); compounds that dissolve easily in water are hydrophilic (Greek, "water-loving"). In contrast, nonpolar solvents such as chloroform and benzene are poor solvents for polar biomolecules but easily dis solve those that are hydrophobic-nonpolar molecules such as lipids and waxes.”
Albert L. Lehninger (1917–1986) said by 1986 at the latest wikiquote, CC BY-SA 4.0 source
“In thermodynamic terms, formation of the solution occurs with a fa vorable free-energy change: ΔG = ΔH - TΔS, where ΔH has a small positive value and TΔS a large positive value; thus ΔG is negative.”
Albert L. Lehninger (1917–1986) said by 1986 at the latest wikiquote, CC BY-SA 4.0 source