Homeostasis and Feedback Mechanisms

Homeostasis and Feedback Mechanisms

Assessment

Interactive Video

Biology

11th - 12th Grade

Hard

Created by

Patricia Brown

FREE Resource

The video by Bioteach is aimed at BTEC and A-level students, focusing on homeostasis and its mechanisms. It explains how organisms maintain a stable internal environment despite external changes, using receptors, control centers, and effectors. The video covers feedback mechanisms, including negative and positive feedback, with examples like body temperature regulation and childbirth. It concludes with guidance for students on assignments related to homeostasis.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary focus of the video created by BioTeach?

Genetic mutations

Photosynthesis processes

Cell division

Homeostatic mechanisms

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does homeostasis refer to in biological terms?

The synthesis of proteins

The process of cell division

The maintenance of a constant internal environment

The breakdown of glucose

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT a component involved in homeostasis?

Chloroplasts

Effectors

Control centers

Receptors

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What role do receptors play in homeostasis?

They produce hormones

They detect changes in the environment

They store energy

They transport oxygen

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does negative feedback help maintain homeostasis?

By causing random fluctuations

By inhibiting all physiological processes

By restoring conditions to a set point

By amplifying changes

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which example best illustrates a negative feedback mechanism?

Fruit ripening

Blood sugar regulation

Childbirth contractions

Action potential

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a characteristic of positive feedback mechanisms?

They inhibit physiological responses

They maintain a constant state

They amplify changes

They decrease stimulus intensity

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