Identify the statement which is incorrect.

1.	Sulphur is an integral part of cysteine.
2.	Glycine is an example of lipids.
3.	Lecithin contains a phosphorus atom in its structure.
4.	Tyrosine possesses an aromatic ring in its structure.

Match the following:

Attachment of spindle fibers to kinetochores of chromosomes becomes evident in:

In a mitotic cycle, the correct sequence of phases is

1. S, ${\mathrm{G}}_1$, ${\mathrm{G}}_2$, M

2. ${\mathrm{G}}_1$, S, ${\mathrm{G}}_2$, M

3. M, ${\mathrm{G}}_1$, ${\mathrm{G}}_2$, S

4. ${\mathrm{G}}_1$, ${\mathrm{G}}_2$, S, M

During Meiosis 1, in which stage synapsis takes place?

Match the following events that occur in their respective phases of cell cycle and select the correct option:

What happens to the mass number and the atomic number of an element when it emits \(\gamma\text{-}\)radiation?

Select the incorrect statement.

In Glycine max, the product of biological nitrogen fixation is transported from the root nodules to other parts as:

1. Ammonia

2. Glutamate

3. Nitrates

4. Ureides

Which of the following elements helps in maintaining the structure of ribosomes?

1. Magnesium

2. Zinc

3. Copper

4. Molybdenum