2.4 Conformers and Regulators Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

What is an abiotic factor

A

A non-living factor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are examples of abiotic factors

A

Temperature, Salinity, pH

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is a conformer

A

Organisms that conform and adapt to their external environment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is a conformers internal environment dependant on

A

The abiotic factors in its external factors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is a conformer advantage

A

Low metabolic cost, they do not use energy to maintain internal state

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is a conformer disadvantage

A

Restricted to narrow eco-logical niche and less adaptable to environmental change

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is a regulator

A

Organisms that maintain their metabolic state themselves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How do regulators control their internal environment

A

They employ physiological means

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is a regulator advantage

A

They are able to exploit a wide range of ecological niches

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is a regulator disadvantage

A

Animals has to expend energy to maintain their internal environment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What do behavioural responses allow for in conformers

A

Allows them to tolerate variation in their external environment to maintain optimum metabolic rate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is homeostasis

A

The maintenance of the body’s internal environment within limits despite the external environment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is negative feedback

A

Regulation of the body’s internal environment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Explain how negative feedback work

A

When a body’s internal environment deviates from ‘normal’ its is detected by receptors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What do receptors do

A

They send hormonal or nervous impulses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What do effectors do

A

They act to return the internal environment back to ‘normal’

17
Q

What is thermoregulation

A

The use of negative feedback in regulation of body temperature in mammals

18
Q

What is the main role of the hypothalamus

A

A part of the brain that contains thermoreceptors and receives impulses from receptors in the skin

19
Q

What are 2 more roles of the hypothalamus

A

To sense the temperature of blood and send appropriate impulses to effectors to trigger corrective feedback

20
Q

What happens when the body temperature decreases

A

Shivering, Vasoconstriction, Hair erector muscles contract and increased metabolic rate

21
Q

What happens when the body temperature increase

A

Sweating, Vasodilation and decreased metabolic rate

22
Q

What is vasoconstriction

A

Decreased blood flow to skin decreases heat loss

23
Q

What is vasodilation

A

Increased blood flow to skin increases heat loss

24
Q

What is an advantage of maintaining constant body temperature

A

So it is the optimum temperature for enzyme activity