Science mq4

Question 1

The production of new cells to bring about growth, replacement of damaged cells and the production of new generations of individuals among some groups of organisms can happen through one of the wonderful processes taking place in the body of living things

Answer 1

Cell Division

Question 2

It is responsible in the increase in weight and height of the baby girl as she grew and developed into a teenager.

Answer 2

Mitosis

Question 2

Mitosis takes place in our body cells called what?

Answer 2

Somatic Cells

Question 3

takes place in the ovaries and testes of animals, including humans.

Answer 3

Meiosis

Question 4

New cells are formed through cell division. This is one important breakthrough that was discovered by who?

Answer 4

Rudolf Virchow

Question 5

When did Rudolf Virchow discover that new cells are formed through cell division?

Answer 5

1858

Question 6

is a stage that involves the replication of the chromosomes into two similar equal parts.

Answer 6

Interphase

Question 7

In this stage, the nuclear membrane and nucleolus begin to breakdown.

Answer 7

Prophase

Question 7

is described as the resting stage, resting because the cell is not dividing but is very active in performing metabolic activities.

Answer 7

Interphase

Question 8

The chromatins change until they become double-stranded and are called what?

Answer 8

chromatids

Question 9

What are the stages of Mitosis (in order)

Answer 9

Interphase, Prophase, Metaphase, Anaphase, Telophase.

Question 10

It is the final stage of mitosis. The chromosomes now have reached the opposite poles.

Answer 10

Telophase

Question 11

Forces originating from the poles pull the chromatids to move.

Answer 11

Anaphase

Question 12

What is the other term for mouth?

Answer 12

Buccal cavity

Question 13

Process wherein food is broken down into smaller molecules that the body cells can utilize

Answer 13

Digestion

Question 14

Saliva contains the salivary what?

Answer 14

amylase and ptyalin

Question 15

Used to break down foods into smaller pieces

Answer 15

Teeth

Question 16

adapted to break down food mechanically and chemically

Answer 16

Mouth

Question 17

a wave-like contraction

Answer 17

Peristalsis

Question 18

Produce most of the saliva in your mouth

Answer 18

salivary glands

Question 19

A muscular tube that conveys food from the pharynx to the stomach.

Answer 19

Esophagus

Question 19

Enables to taste food

Answer 19

Muscular Tongue

Question 20

pear-shaped organ that is connected to the distal end of the esophagus.

Answer 20

Stomach

Question 21

The stomach’s interior walls are folded and contain numerous what? They are composed of cells that secrete materials important in the digestive process.

Answer 21

gastric glands

Question 22

In this stage, the nuclear membrane and nucleolus begin to breakdown. The chromatins change until they become double-stranded and are called chromatids.

Answer 22

Prophase

Question 23

The churning action of the stomach changes the bolus into a semi-fluid consistency.

Answer 23

Chyme

Question 24

The double-stranded chromosomes called chromatids align themselves at the equator of the cell.

Answer 24

Metaphase

Question 25

In what phase do the spindle fibers begin to become well developed?

Answer 25

Prophase

Question 26

Each chromatid is attached to the spindle by a structure in the centromere called what?

Answer 26

kinetochore

Question 27

What is the difference between Prophase I and Prophase II

Answer 27

In Prophase I, the nuclear membrane and nucleolus begin to break down. Whilst in II, that's when the spindle fibers begin to develop well.

Question 28

What is the difference between the Metaphase in meiosis and mitosis?

Answer 28

there is a pairing of the homologous chromosomes (called synapsis), forming a tetrad.

Question 29

What is the difference between metaphase I and II?

Answer 29

In I, the homologous chromosomes line up in pairs (and according to the ppt, in a horizontal manner) whilst in II, the single chromosomes that aren't in pair line up in the midline of the cell (in a vertical manner).

Question 30

double-stranded chromosomes

Answer 30

chromatids