Question

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Answer 1

1. If an object was 1 mm across, how big would it be if it was magnified 10 times ?

» A magnification of 10 means the original measurement is 10 times larger. That is  multiplied by 10

⇒

1  mm  ×  10

⇒    10  mm  Or 1  cm

2. Why can chromosomes be seen only when cell is dividing ?

» During cell division, mitosis, the chromosomes become highly condensed and are visible clearly within the nuclei of cells.

3. Why is cytoplasm complex solution ?

» Cytoplasm is a complex solution because Cytosol makes up about 70% of the cell volume which is a complex mixture of cytoskeleton filaments, dissolved molecules, and water.

4. Is the cell membrane permeable or impermeable to methylene blue ?

» The cell membrane was permeable to methylene blue.

The reason is that the dye was able to make the cell blue in order to be visible.

Answer 2

Answer:

1. A magnification of 10 means the original measurement is 10 times larger. That is

multiplied by 10

1mm*10 = 10mm = 1 cm

2. During most of the cell cycle, interphase, the chromosomes are somewhat less condensed and are not visible as individual objects under the light microscope. However during cell division, mitosis, the chromosomes become highly condensed and are then visible as dark distinct bodies within the nuclei of cells.

3. The jelly-like semifluid complex of cytoplasm is called cytosol or cytoplasmic

matrix or intracellular fluid.

In the eukaryotic cell, the cytosol is surrounded by the cell membrane and is part of the cytoplasm, which also comprises the mitochondria, plastids, and other organelles except nucleus. The cytosol is thus a liquid matrix around the organelles.

4. cell membrane was permeable to methylene blue because the dye was able to make the cell blue in order to be visible.