Cells and control

Question 1

What’s interphase

Answer 1

The initial growth phase in which there are extra ribosomes, mitochondria and other sub-cellar structures are produced.

Question 2

What happens in interphase

Answer 2

The cells chromosomes are replicated so there are two sets in the cells chromosomes.

Question 3

What’s mitosis

Answer 3

When the two sets of chromosomes are pulled to opposite ends of the cell. The nucleus then divides into two.

Question 4

What’s cytokinesis?

Answer 4

When the cytoplasm and cell membranes divide to make two identical diploid cells.

Question 5

How are chromosomes arranged in prophase

Answer 5

Tightly coiled (they are condensed)

Question 6

How are chromosomes arranged in Metaphase

Answer 6

Lined up along the middle of the cell

Question 7

How are chromosomes arranged in Anaphase

Answer 7

pulled to opposite ends of the cell

Question 8

What happens in telophase

Answer 8

The nucleus splits so two new nuclei are formed

Question 9

What is cancer

Answer 9

a group of diseases where changes in cells lead to uncontrolled growth and division of cells.

Question 10

What is a malignant tumor?

Answer 10

A harmful tumor that can invade neighboring tissues and spread throughout the body and into the blood, leading to the creation of more, secondary, tumors.

Question 11

What are benign tumors?

Answer 11

They stay in a specific part of the body, often within a membrane

Question 12

What’s the zone of cell division

Answer 12

The zone is near the tip of a root and then cells divide by mitosis so new cells are created

Question 13

What is the zone of elongation

Answer 13

further yup the root and next to the zone of division, the new cells grow in size here

Question 14

What’s the zone of differentiation

Answer 14

even further up the root, next to the zone of elongation. this is where the new cells differentiate.

Question 15

If a baby is in the 95th percentile of weight, how many babies of the same age are the same weight or heavier?

Answer 15

5%

Question 16

Explain cell differentiation

Answer 16

the process where a cell develops sub-cellular structures to let it perform a specific function. then this happens, the cell becomes specialized.

Question 17

When does cell differentiation happen?

Answer 17

During an organisms development

Question 18

What do organisms start as

Answer 18

One cell

Question 19

How are embryos made?

Answer 19

when cells divide to form embryos that differentiate to produce cells that can perform all of the body’s functions.

Question 20

Why are plants always able to create more tissue?

Answer 20

because they keep their ability to differentiate throughout their life.

Question 21

How does cell differentiation work in adult animals?

Answer 21

it happens rarely and because their cells divide in order to replace cells and repair tissues. new tissues are rarely created.

Question 22

In human adults, where can stem cells be found?

Answer 22

in bone marrow

Question 23

what are stem cells used to replace?

Answer 23

cells and damaged tissue

Question 24

where are plant stem cells found

Answer 24

meristem tissue