Match the key learning to the process or investigation statement. a. one-gene/one-enzyme hypothesis b. a protein has a particular sequence of amino acids f. triplet hypothesis g. translation c. messenger RNA hypothesis d. stop code e. the genetic code is redundant h. RNA i. Transcription j. Start code 53. Only nucleotide variations adding or removing three nucleotides produced a functional protein. 54. ribosomes in the cytoplasm organize MRNA and tRNA to combine amino acids into a polypeptide 55. nucleotides are made of ribose, phosphate and one of the nitrogenous bases: adenine, cytosine, guanine and uracil 56. Jacob and Monod proposed that DNA's genetic message was copied on complementary RNA.
Structure and Composition of Cell Membrane
Despite differences in structure and function, all living cells in multicellular organisms are surrounded by a cell membrane. Just like the outer layer of the skin separates the body from its environment similarly, the cell membrane, also known as 'plasma membrane,' separates the inner content from its exterior environment.
Cell Membrane
The cell membrane is known by different names like plasma membrane or cytoplasmic membrane, or biological membrane. The term "cell membrane" was first introduced by C. Nageli and C. Cramer in the year 1855. Later on, in 1931, the term "plasmalemma" for cell membrane was given by J. Plowe. The cell membrane separates the cell's internal environment from the extracellular space. This separation allows the protection of cells from their environment.
Prokaryotes vs Eukaryotes
The cell is defined as the basic structural and functional unit of life. The cell membrane bounds it. It is capable of independent existence.
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