Question

Thought Questions: 1. Why are plant and animal cells considered more closely related than prokaryotic and eukaryotic cells? Give three reasons. 2. Although most cells have one nucleus, some have no nucleus while others have multiple nuclei. Name two cells (or cell types) that have no nucleus and two that are multi-nucleate.

Answer 1

Thought question

1. Plant and animal cell consider more closely related than prokaryotic and eukaryotic cell because :

I. Both are eukaryotes. That is having true nucleus

II. Both share most common recent ancestor in the phylogenetic tree.

III. Both have similar organization of cellular organelle.

2. Two cells that do not have nucleus

I. Mammalian red blood cells

II. Bacteria cell

Two cells that are multinucleate

I. Human skeletal muscle cell

II. Osteoclast

Thought question

1. The effect of the colchicine would be that it lead to the condense chromosome and inhibit mitosis by inhibiting organization of microtubuoes.

2. Neurons lack the centriole which is necessary for the cell to undergo mitosis. Therefore, they are not able to perform mitosis and they show neuroplasticity.

Answer 2

Because both of them share most common recent ancestor in the phylogenetic tree