Attempt timed tests with marks and negative marking.
In chloroplasts, chlorophyll pigments are present in the
Which of the following statements is incorrect?
The endomembrane system includes
Mitochondria are known as the powerhouse of the cell.
Chief advantage of multicellularity over unicellular organization is
Regarding prokaryotes: 1. They are generally smaller and multiply more rapidly than eukaryotic cells. 2. They have a cell wall surrounding the cell membrane. 3. The fluid matrix is cytoplasm and there is no well-defined nucleus. 4. Genetic material is basically naked and not enveloped by a nuclear membrane. 5. Many bacteria have small circular DNA outside genomic DNA, called plasmids. 6. Mesosomes are infoldings of the cell membrane. Which option is correct?
Assertion: Polar molecules require membrane carrier proteins for transport.
Reason: Polar molecules alone cannot pass through the non-polar lipid bilayer.
Cell theory was formulated by
Consider the following statements about ribosomes: i. Ribosomes are non-membrane-bound organelles. ii. Ribosomes are seen in cytoplasm, chloroplasts, mitochondria and on RER. iii. In prokaryotes, ribosomes are 80S type. iv. They are the site of translation. Which option is correct?
Chromatin contains
A eukaryotic ribosome is
Match colum A with column B and choose correct answer:
On the sides of the centromere, disc-shaped structures are known as
The scientist who first observed and described a live cell is
The given figure is:
Polysomes are
Which statement is true regarding the size of ribosomes in chloroplasts and cytoplasm?
Which of the following is correctly labelled?
The membrane-bound vesicular structures formed by the process of packaging in the Golgi apparatus are
Match the following:
