GCSE Biology: Body Control
Test your knowledge on homeostasis, blood glucose regulation, hormones, and eye accommodation.
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Quiz Questions & Answers
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Question 1: Which term describes the maintenance of a stable internal environment in an organism?
Homeostasis
Excretion
Respiration
Metabolism
Question 2: What is the primary role of insulin in regulating blood glucose levels?
To lower blood glucose by promoting glucose uptake and conversion to glycogen
To increase glucose production in the liver
To promote the conversion of glycogen into glucose
To decrease the uptake of glucose by cells
Question 3: Which gland is often referred to as the 'master gland' because it controls the activity of many other endocrine glands?
Pancreas
Adrenal gland
Thyroid gland
Pituitary gland
Question 4: When looking at a distant object, how does the ciliary muscle and suspensory ligaments of the eye adapt?
Ciliary muscles contract, suspensory ligaments slacken, lens becomes thicker
Ciliary muscles relax, suspensory ligaments tighten, lens becomes thinner
Ciliary muscles contract, suspensory ligaments tighten, lens becomes thinner
Ciliary muscles relax, suspensory ligaments slacken, lens becomes thicker
Question 5: If blood glucose levels drop too low, which hormone is released to increase them?
Glucagon
Thyroxine
Adrenaline
Insulin
Question 6: Which of the following is a key component of a negative feedback loop in homeostasis?
A response that has no effect on the stimulus
A response that creates a new imbalance
A response that counteracts the initial stimulus
A response that amplifies the initial stimulus
Question 7: What happens to the lens of the eye when focusing on a near object?
It remains unchanged
It becomes thicker and more convex
It becomes thinner and less convex
It moves further away from the retina
Question 8: Which statement accurately describes the function of hormones?
They are chemical messengers transported in the blood to target cells
They are structural proteins found in cell membranes
They are enzymes that speed up metabolic reactions
They are electrical signals transmitted by nerves