Chapter 2.1 (page 26)

Question 1

These are chemicals that are main regulators of growth, metabolism, reproduction and other body activities.

Answer 1

Hormones

Question 2

TRUE or FALSE:

The effect of the Endocrine System to our bodies has longer affect and quicker response than our Nervous System.

Answer 2

FALSE.

It has longer affect (up to years) but has a slower response than the nervous system.

Question 3

There are 2 different kinds of glands in the body. What are they?

Answer 3

Exocrine Gland

Endocrine Gland

Question 4

These are ductless glands that release hormones directly into the blood.

Answer 4

Endocrine Glands

Question 5

These are glands that have ducts through which their secretions are carried to a particular site. Sweat glands are an example of this.

Answer 5

Exocrine glands

Question 6

Give examples of the target cell’s altered activity as response to a hormone.

Answer 6

Changes in plasma membrane permeability or electrical state

**Synthesis of protein or enzymes within the cell **

Activation or deactivation of enzymes

** Stimulation of mitosis **

Question 7

There are two types of hormones. Which type has its receptors of the surface/ plasma membrane of the target cells (as it cannot directly enter the membrane)?

Answer 7

Amino-acid based Hormone

Question 8

What are the two types of hormones?

Answer 8

Amino acid based Hormones

Steroid Hormones

Question 8

TRUE or FALSE:

The 2nd messenger molecule acts as the way for the 1st messenger to enter into the cell to alter cellular activity.

Answer 8

FALSE.

The 2nd messenger is the one that affects the cell’s activity.

Question 9

Steroid hormones affect the cellular DNA via a _______________.

Answer 9

Hormone Receptor Complex