The cell communication

Question 1

Must communicate with one another to function as a tissue

Answer 1

Cell

Question 2

Must send signals throughout the organ for the organ to function properly

Answer 2

Tissue

Question 3

In a particular system must communicate to carry out the system’s process.

Answer 3

Organs

Question 4

True or False

To maintain stability and organization inside the human body, communication is essential.

Answer 4

True

Question 5

Released into the bloodstream to act on distant target cells that will alter their functioning.

Answer 5

Circulating Hormones

Question 6

Called PARACRINES

Answer 6

Local Hormones

Question 7

Released to affect only cells in the vicinity; act on neighboring cells

Mostly used when quick responses are required

Answer 7

Local Hormones

Question 8

They occur across very small distances and are extremely specific.

Answer 8

Gap Junctions

Question 9

Cell-to-cell contact

Immediate and short-lived

Answer 9

Gap Junctions

Question 10

Nuclear Division

Answer 10

Mitosis

Question 11

True or False

To carry out this complicated process, the cell must communicate with surrounding cells and its own organelles and biochemical pathways.

Answer 11

True

Question 12

True or False

During mitosis, DNA and organelles are duplicated, and DNA is condensed into manageable packets and sorted into separate nuclei.

Answer 12

True

Question 13

True or False

This ensures that the DNA of the parent cell is copied exactly and partitioned properly into one identical daughter cells.

Answer 13

False: This ensures that the DNA of the parent cell is copied exactly and partitioned properly into two identical daughter cells

Question 14

These are enzymes that set in motion proteins lying dormant in the cell by adding a phosphate group.

Answer 14

CDKs (cyclin-dependent kinases)

Question 15

CDK only operate when the protein ________ is present.

Answer 15

Cyclin

Question 16

Small proteins periodically produced by the cell that, when present, bind to CDKs and activate them.

Answer 16

Cyclin

Question 17

The entire process of mitosis is governed by _______and _______

Answer 17

Cyclin production and subsequent CDK activity

Question 18

_______ will bind to CDK and initiate the copying of DNA that is required before mitosis can begin.

Answer 18

Cyclin-E

Question 19

moves the cell from interphase to the first stage of mitosis.

Answer 19

Cyclin-A

Question 20

Choose the CORRECT answer.

a. To maintain stability and organization inside the human body, communication is essential.

b. Cells must communicate with one another to function as an organ.

c. There’s no correct answer.

d. Tissues must send signals throughout the nucleus for the cell to function properly

Answer 20

a. To maintain stability and organization inside the human body, communication is essential.

Question 21

Cell-to-cell contact

a. Paracrine
b. Autocrine
c. Gap junctions
d. Circulating hormones

Answer 21

c. Gap junctions

Question 22

Act on neighboring cells

a. Paracrine
b. Active movement
c. Gap junction
d. Circulating hormones

Answer 22

a. Paracrine

Question 23

True or False

To carry out mitosis, the cell does NOT need to communicate with the surrounding cells and its own organelles.

Answer 23

False: To carry out mitosis, the cell does need to communicate with the surrounding cells and its own organelles.

Question 24

True or False

CDKs can only operate when cyclin is present.

Answer 24

True

Question 25

What is cell signaling? a. The process of cell division b. The process of cell differentiation c. The mechanism by which cells communicate with each other d. The way cells obtain energy

Answer 25

c. The mechanism by which cells communicate with each other

Question 26

Which type of cell signaling involves signaling molecules traveling through the bloodstream to distant target cells? a. Contact-dependent signaling b. Endocrine signaling c. Autocrine signaling d. Paracrine signaling

Answer 26

b. Endocrine signaling

Question 27

Which of the following is an example of contact-dependent signaling? a. Insulin regulating blood glucose levels b. Nerve cells transmitting signals to muscles c. Cells interacting through gap junctions d. Immune cells releasing cytokines to activate neighboring immune cells

Answer 27

c. Cells interacting through gap junctions

Question 28

Which type of cell signaling involves cells releasing signals that affect their own activity? a. Endocrine signaling b. Paracrine signaling c. Contact-dependent signaling d. Autocrine signaling

Answer 28

d. Autocrine signaling

Question 29

Which of the following is an example of paracrine signaling a. Nerve cells transmitting signals to muscles b. Cells releasing signals that affect their own activity c. Hormones traveling through the blood stream to distant target cells. d. Immune cells releasing cytokines to activate neighboring immune cells

Answer 29

d. Immune cells releasing cytokines to activate neighboring immune cells