which of the following are evidence that chloroplasts and mitochondria originated by endosymbiosis? A they have bacterial type DNA molecules, to cyanobacteria and Rickettsiarespectively B. they have bacterial type ribosomes c. chloroplasts and mitochondria replicate independently from the cell (they are "semiindependent) D. All of the above e. None the above
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.
which of the following are evidence that chloroplasts and mitochondria originated by endosymbiosis?
A they have bacterial type DNA molecules, to cyanobacteria and Rickettsiarespectively
B. they have bacterial type ribosomes
c. chloroplasts and mitochondria replicate independently from the cell (they are "semiindependent)
D. All of the above
e. None the above
Find the mismatched pair.
A. Prokaryotic Organisms --Naked DNA in space denominated the nucleoid
B. Eukaryotic Organisms-genomic DNA
c. Prokaryotic Diganismspolycistronic is unmodified prior to translation
D. Eukaryotic Organisms-monocistronic mRNA is modified before being translated
E. Prokaryotic Organisms-generaly interrupted by introns (non-protein-coding sequences)
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