1-The five stages of mitosis occur in which order? A- Anaphase, prometaphase, me

Question

1-The five stages of mitosis occur in which order?

A- Anaphase, prometaphase, metaphase, telophase, prophase

B- Prophase, prometaphase, metaphase, anaphase, telophase

C- Telophase, anaphase, prophase, prometaphase, metaphase

D-Prophase, metaphase, prometaphase, telophase, anaphase

E- Anaphase, telophase, prometaphase, metaphase, prophase

2- Select all of the following that are true of linked genes.

A- They are used in gene mapping

B - They are likely to be inherited together

C- They can be used to identify genes with mutations that are responsible for disease

D- They are likely to be close together on the same chromosome

3- Select all of the following that occur during anaphase

A- Astral microtubules polymerize (net)

B- Chromosolal microtubules polymerize (net)

C- Chromosomal microtubles depolymerize (net)

D- Polar microtubules polymerize (net)

E- Polar microtubules depolymerize (net)

4- Select all of the following that require protein involvement in transporting a solute across the plasma membrane.

A- Simple diffusion

B- Active transport

C- Facilitated diffusion

E- Osmosis

5- Select all of the following that can trigger different types of channels to open, thereby allowing passage of ions across the membrane.

A- Ligand binding

B- Change in membrane voltage/potentials

C- A physical stress on the channel

A- Anaphase, prometaphase, metaphase, telophase, prophase

B- Prophase, prometaphase, metaphase, anaphase, telophase

C- Telophase, anaphase, prophase, prometaphase, metaphase

D-Prophase, metaphase, prometaphase, telophase, anaphase

E- Anaphase, telophase, prometaphase, metaphase, prophase

Explanation / Answer

1. b is the right sequence , this is the sequnce in which cell divides into two in M phase of cell cyle

2.b is the right answer, linked gene show linkage and that causes the inheritance from one generation to another generation, they are mostly placed on same chromososme and also used for gene mapping

3.there is depolymerisation of microtubules which causes the stringent force which help in dividing the chromosomes from the centre and movement towards poles takes place

4 active and faciliated difusion, ATP is required in tranfer of a molecule against the gradient some times protin carieris required but it is more obvious in faciliated diffusion protein molecule is used to transfer the molecule.

5. all the three allows passage of ions across the membrane. calcium ions uses ligand binding , Na+ ions uses voltage potential and physical stress for some ions as well

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