Answer:
The correct answer will be-false
Explanation:
The folded structure of the plasma membrane was observed in the gram-positive bacteria which were called the mesosomes.
These mesosomes were earlier thought to be involved in the specific functions like cell division, chromosome replication, oxidative phosphorylation.
Later in the 1970s, the research showed that these invaginations of the plasma membrane were produced by the chemical fixation techniques to prepare samples for the electron microscopy and were treated as artefacts.
Thus, false is the correct answer.
Answer:
E
F
A
B
C
D
matched according to your questions.
All living organisms are composed of one or more cells.
The cell is the basic unit of structure and organization in organisms.
Cells arise from pre-existing cells.
Answer:
All these choices are correct
Explanation:
YACs stands for Yeast artificial chromosomes. These chromosomes are derived from a fungus species Saccharomyces cerevisiae. YACs are genetically modified and a 100—1000 kb fragments of DNA are inserted into a bacterial plasmid. The inserted DNA fragment can be cloned and physically mapped. In the presence of this fragment, the chromosome will be stable during extracellular replication and easily can be differentiated from colonies without the vector.