Cell is the fundamental structural and functional unit of all living organisms because:
1. | Anything less than a complete structure of a cell does not ensure independent living. |
2. | The metabolic reactions can only occur inside a living cell. |
3. | Nucleic acids present in the cells ensure living state. |
4. | The membrane bound organelles cause differentiation for proper functioning. |
Who concluded, based on his studies on plant tissues, that the presence of cell wall is a unique character of plant cells ?
1. | Mathias Schleiden | 2. | Theodor Schwann |
3. | Rudolph Virchow | 4. | Robert Hooke |
Prokaryotic mesosomes do not help in:
1. Cell wall formation
2. DNA replication
3. Respiration
4. Photosynthesis
The endomembrane system of a eukaryotic cell does not include:
1. Endoplasmic reticulum
2. Lysosome
3. Vacuole
4. Peroxisome
The cis and trans faces of the Golgi Apparatus are:
1. Similar but not interconnected
2. Similar and interconnected
3. Entirely different but interconnected
4. Entirely different and not interconnected
Plastids used in storing proteins are called as:
1. Amyloplasts
2. Aleuroplasts
3. Elaioplasts
4. Chromoplasts
A centriole-like structure, from which the cilium and the flagellum emerge, is the:
1. Centrosome
2. Basal body
3. Axoneme
4. Vimentin
The outer membrane of the nucleus:
I. is continuous with the Endoplasmic reticulum
II. does not bear ribosomes.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
If the centromere is situated close to the end of a chromosome, it is called as:
1. Metacentric
2. Submetacentric
3. Acrocentric
4. Telocentric
Centrioles, cilia, flagella, and basal bodies have remarkably similar structural elements and arrangements. This leads us to which of the following as a probable hypothesis?
1. | Disruption of one of these types of structure should necessarily disrupt each of the others as well. |
2. | Loss of basal bodies should lead to loss of all cilia, flagella, and centrioles. |
3. | Motor proteins such as dynein must have evolved before any of these four kinds of structure. |
4. | Natural selection for motility must select for microtubular arrays in circular patterns. |