Homeostasis

Question 1

Regulators

Answer 1

maintain constant internal conditions

Question 2

Conformers

Answer 2

conform to their external environment; internal conditions fluctuate alongside external changes

Question 3

Homeostasis

Answer 3

regulation of temperature, blood flow, nutrients, ion balance, cell growth, and water balance

Question 4

Circulatory system

Answer 4

distributing nutrients

Question 5

execratory system

Answer 5

removes waste

Question 6

osmoregulation

Answer 6

the regulation of water within a living organism

Question 7

What is the water balance for land, freshwater, and saltwater animals?

Answer 7

land; conserve water, freshwater; hypotonic, saltwater; hypertonic

Question 8

What are the waste products of macromolecules?

Answer 8

Carbohydrates- carbon dioxide & water. Nucleic acids- carbon dioxide, water, phosphorus, nitrogen. Proteins- carbon dioxide, water & nitrogen. Lipids- carbon dioxide & water.

Question 9

Nitrogenous waste

Answer 9

very toxic, soluble, must dilute to get rid of it.

Question 10

Aquatic organisms nitrogenous waste

Answer 10

they can’t afford to lose water; Ammonia

Question 11

Terrestrial nitrogenous waste

Answer 11

Need to conserve water; Urea

Question 12

Terrestrial egg layers nitrogenous waste

Answer 12

need to conserve water and protect embryo; Uric acid

Question 13

How do freshwater animals remove nitrogenous waste

Answer 13

Use surplus water to dilute ammonia and excrete it. ( diluted urine)

Question 14

How do land animals remove nitrogenous waste

Answer 14

must process ammonia to make it less toxic. They use urea which is produced in the liver.

Question 15

How do egg-laying animals remove nitrogenous waste?

Answer 15

there’s no place to dispose of waste in egg so they use uric acid

Question 16

Mammalian system

Answer 16

Filters solutes out of blood and reabsorbs H2O

Question 17

Key functions of the mammalian system

Answer 17

Filtration, reabsorption, secretion, excretion

Question 18

What is the functional unit of the kidney?

Answer 18

Nephrons

Question 19

Nephrons function

Answer 19

Filter out urea and other solutes and selective reabsorption of valuable solutes/H2O back into the blood stream

Question 20

Mammalian kidney

Answer 20

Interaction of the circulatory system and excretory systems.

Question 21

Nephron filtration

Answer 21

At the glomerulus it filters out H2, glucose, salts, and urea out of blood

Question 22

Endotherms

Answer 22

Internal generation of heat; warm blooded animal

Question 23

Ectotherms

Answer 23

Animal that is dependent on external sources of heat