Cell wall
The cell wall of the plant cell protects it, and maintains the framework and shape. This cell wall is an important part of the cell because it draws the internal and external elements within and without the cell. This structure serves as the rough edge and why plants have this thick structure outside when you try to feel it.
The sugar molecules thus formed contain carbon,hydrogen, and oxygen: their hydrocarbon backbones are used to make amino acids and to make other carbon based molecules that can be assembled into other large molecules.
Answer:
A flexible connective tissue, known as cartilage varies from bones in many ways, its microcomposition is less developed in comparison to the bone and is avascular. It is not supplied with nerves and thus depends upon the process of diffusion to attain nutrients. The three kinds of cartilage are fibrous, hyaline, and elastic.
Of these the most widespread kind is the hyaline cartilage, it looks like glass. It is witnessed in embryos, where the formation of bone takes place as hyaline cartilage, which ossifies later. In adults, it is found on the tips of the ribs, on the articular surfaces of the long bones, the parts of the skull, and the rings of the trachea.
Fibrous cartilage is witnessed in the pubic symphysis and intervertebral discs and exhibits many collagen fibers.
Elastic cartilage is witnessed in the internal support of the external ear and the epiglottis and is yellow, springy, and elastic in characteristics.
Answer:
Option-A
Explanation:
β-Lactam antibiotics are the antibiotics that contain β-Lactam rings in their structures like in cephalosporins and penicillin.
The antibiotics act by inhibiting or disrupting the process of cell wall formation in the bacteria which is mediated by an enzyme called penicillin-binding proteins.
To bind covalently to the PBP proteins, the antibiotic has to diffuse through the bacterial cell wall. since the gram-negative bacteria contain an additional lipopolysaccharide layer which decreases the penetration of the antibiotic, therefore, the gram-positive bacteria lacking the additional layer are more susceptible than gram-negative bacteria.
Thus, option-A is the correct answer.
Answer:
If it does not undergo cytokinesis, it means that the cell membrane does not divide to give two daughter cells, hence the two nucleus of daughter cells remain in the parent cell. Over time, this may trigger checkpoint responses in the cell and if cytokinesis cannot be activated to divide the parent cell into two daughter cells, the cell will be killed via apoptosis.
Explanation:
