The Ultimate Year 12 Biology Test

  • IB
  • AP Biology
  • A-Level Biology
Reviewed by Editorial Team
The ProProfs editorial team is comprised of experienced subject matter experts. They've collectively created over 10,000 quizzes and lessons, serving over 100 million users. Our team includes in-house content moderators and subject matter experts, as well as a global network of rigorously trained contributors. All adhere to our comprehensive editorial guidelines, ensuring the delivery of high-quality content.
Learn about Our Editorial Process
| By Mish K
Mish K
Community Contributor
Quizzes Created: 3 | Total Attempts: 4,851
| Attempts: 2,319 | Questions: 38
Please wait...
Question 1 / 38
0 %
0/100
Score 0/100
1. What is homeostasis?

Explanation

Homeostasis refers to the body's ability to maintain a stable internal environment despite external fluctuations. This includes regulating temperature, pH levels, and other physiological variables within a narrow range. It is crucial for the proper functioning of cells, tissues, and organs. The body achieves homeostasis through various mechanisms, such as feedback loops and hormonal control, which help to restore balance and ensure optimal conditions for the body's cells to function properly.

Submit
Please wait...
About This Quiz
The Ultimate Year 12 Biology Test - Quiz

Why did I make this? I don't know. The only thing I know is you should take the test. Good luck and have fun.

Personalize your quiz and earn a certificate with your name on it!
2. Match the cells found in blood plasma with their respective duties

Explanation

Red blood cells have a name which gives it away, as haemoglobin is a red pigment. White blood cells patrol the body. Platelets are chunks of cells broken off from a big cell called a megakaryocyte and fixes blood vessel ruptures by clotting blood there. If you watch Cells At Work, you'll know this very well.

Submit
3. A _______ is a junction between two nerve cells, consisting of a minute gap across which impulses pass by diffusion of a neurotransmitter.

Explanation

self-explanatory

Submit
4. Which one of these are true?

Explanation

Positive feedback takes in stimulus to reinforce a process until it reaches an end point. This means that when a certain stimulus is received, it leads to an amplification or increase in the process, pushing it towards completion or an endpoint. On the other hand, negative feedback draws on stimulus to alter the process until it falls back into normal limits. This means that when a certain stimulus is received, it leads to a response that counteracts the stimulus, bringing the process back to its normal range or limits.

Submit
5. What is the role of the heart and lungs in gas regulation?

Explanation

Honestly if you didn't get this one, I'd like to ask how you even passed the last two terms of year 12 biology.

Submit
6. Match the term with the definition

Explanation

The endocrine system is composed of several glands which all secrete different hormones. These hormones travel in the blood stream to the target cells of which they'll act upon. Hormones affect the physiological function of a cell in one way. To maintain homeostasis, an antagonistic hormone may also be secreted to counter the affect of a hormone to achieve an opposite effect.

Submit
7. The alveoli are sacs where gas exchange occurs. Oxygen and carbon dioxide ________ between the ducts and capillaries.

Explanation

Oxygen and carbon dioxide is exchanged through diffusion between the one-cell thick ducts and capillaries.

Submit
8. Match the type of neuron with its characteristic

Explanation

Sensory neurons receive external stimuli and converts them into internal electrical impulses. The relay neuron connects the impulses received from the sensory neuron and relays them to the motor neuron, which causes the effector to act.

Submit
9. When an impulse arrives to the axon terminals, they depolarise. This causes the Ca2+ gates to open. The influx of calcium ions trigger vesicles to ________ neurotransmitters.

Explanation

Ca2+ channels play a vital role in nerve relays because the influx of calcium ions allow neurotransmitters to do their job.

Submit
10. Why are neurotransmitters deactivated soon after release?

Explanation

Neurotransmitters are deactivated soon after release to ensure that the signal can be controlled and stopped after it is transmitted. This allows for precise regulation of neuronal communication and prevents continuous stimulation or overexcitation of the receiving cells. By deactivating neurotransmitters, the nervous system can maintain proper signaling and prevent excessive or prolonged activation, which could lead to detrimental effects on the body.

Submit
11. How does ADH (Anti-diuretic hormone) work?

Explanation

ADH increases the permeability of the tubules in the nephron, so water is more easily absorbed back into the blood stream. This creates more concentrated urine. Yes, that also means you pee less, but low amount of urination can be due to other reasons too.

Submit
12. Which of these statements are correct?

Explanation

When you breathe in, the diaphragm contracts and moves down. This expands the volume of the lungs.

Submit
13. Oxygen is carried in the blood stream by a protein called haemoglobin. It can carry up to _______ oxygen molecules.

Explanation

Haemoglobin has a quaternary structure. It can carry up to 4 oxygen molecules at once.

Submit
14. What is the role of the hypothalamus and pituitary gland?

Explanation

In the endocrine system, the hypothalamus detects changes all around the body. This means that it is very important in maintaining various functions around the body. Once it detects something is off, it sends a message to the pituitary gland. The pituitary gland sends out many different types of hormones that are needed in body regulation.

Submit
15. What differentiates the somatic nervous system (SoNS) and the autonomic nervous system (ANS)?

Explanation

Both the SoNS and the ANS are under the peripheral nervous system. The SoNS is associated with voluntary functions (like moving your hand) while the ANS is associated with visceral functions (a boner).

Submit
16. Which one of these are an accurate metaphor for a negative feedback system?

Explanation

When you drive, you must step on the gas pedal to accelerate your car to near the appropriate speed limit. If your speed exceeds it however, you would let go of the gas pedal to allow the car to slow down. Once you're beginning to be too slow, you start it again. This is an example of negative feedback.

Submit
17. What is the correlation between oxygen saturation in RBC's and oxygen level in blood?

Explanation

Just like being cramped in the hall, once the door opens, people would be more inclined to rush out into the open area.

Submit
18. Label the parts of the kidney

Explanation

Next question will get you to name their functions, have fun ;)

Submit
19. What are the correct charges for each stage?

Explanation

not-available-via-ai

Submit
20. Match the part of the kidney with its function

Explanation

Blood enters the kidney through the renal artery. It then reaches the medulla pyramids. That's where all the filtration happens. After that, the urine is collected and transported into the bladder through the ureter. The filtered blood leaves through the renal vein.

Submit
21. How is oxygen and carbon dioxide transported?

Explanation

More specifically, the gases are carried by red blood cells which are DISSOLVED into the blood.

Submit
22. What is the function of the ascending and descending limbs in the loop of Henle?

Explanation

Because of a concentration gradient, water and salts move passively. In the descending limb, the very salty external environment causes water to be drawn out. As the loop moves up and back into the less salty area (cortex), salt leaves.

Submit
23. Match the nephron parts with its function

Explanation

The glomerulus and bowman's capsule is the beginning of the urine-production process. There, blood enters through the afferent arteriole. It then exits through the efferent arteriole and coils around the whole nephron before leaving through the renal vein as filtered blood. A way to remember the difference is that the afferent arteriole transports blood that will be AFFECTED by the process, and the efferent arteriole transports blood that is already EFFECTED by filtration. Henle's loop doesn't filter much, but rather deals with salt and water levels. For the convoluted tubules, the proximal convoluted tubules does most of the re-absorption work as opposed to the distal convoluted tubule. A way to remember the difference is that "proximal" means close by (to the glomerulus) and "distal" means far away.

Submit
24. Which of the following are FALSE?

Explanation

The CNS and PNS aren't separated by voluntary and involuntary responses because they both do that. The main difference is just the components that make up the systems.

Submit
25. Label the parts of a neuron

Explanation

The cell body encompasses the nucleus of the cell. Dendrites branch out from there and receive messages. The axon refers to the 'channel', which are insulated by Schwann cells that form the Myelin Sheath. The gaps in between are called Nodes of Ranvier. At the end of the axon is the axon terminal.

Submit
26. How are action potentials transmitted between neurons across chemical synapses?

Explanation

The presynaptic terminal is the end of the first neuron. The impulse travels down the axon and into the synaptic vesicle, where neurotransmitters transmit the message in chemical form. Passing a gap called a synaptic cleft, the chemical message reaches the receptor region, which converts the message back into electric form. This then moves along the axon and reaches the post-synaptic terminal and it starts again.

Submit
27. Match the line on the graph with the appropriate description.

Explanation

We all know what adult haemoglobin is. Myoglobin acts as reserves in muscles for when strenuous exercise happens and extra oxygen is needed. Therefore, it's oxygen affinity is very high. Foetal haemoglobin has higher oxygen affinity levels than adults because this will allow oxygen travelling in the mother's blood stream to diffuse into the fetus. Otherwise, the fetus won't receive any oxygen.

Submit
28. Check all the actions that the blood pH regulation loop performs in the case of excessive CO2 (acidosis)

Explanation

All the following actions enable the body to increase the rate of gas exchange, which will remove carbon dioxide from the body faster.

Submit
29. What is blood pH determined by?

Explanation

Carbon dioxide reacts with water to make carbonic acid. This stuff is of course in the blood stream and therefore makes blood acidic.

Submit
30. Check the following factors that may trigger ADH to be released

Explanation

ADH causes the body to retain water, which may happen if the body feels their water level is low. Perspiration causes the body to lose a lot of water. A low blood pressure can result due to low water level in the blood plasma, and not drinking water regularly will cause the body to be unable to replenish fluid levels. Drink up!

Submit
31. Which of the following correctly complete the action potential graph?

Explanation

Once a neuron receives a stimulus, it undergoes depolarisation, which causes the cell to lose its negative charge. After a certain point, the cell repolarises and falls back to a negative charge again. However, it typically overshoots, resulting in a hyperpolarisation. This is a temporary period of time where the nerve isn't ready to receive another signal. The charge then returns back to its normal level.

Submit
32. Which of these are the characteristics of the nervous system and NOT the endocrine system?

Explanation

The nervous system sends electric messages through nerves that run along the body. They're rapid, just like electricity cables in the city. As soon as you turn the TV on, it instantly turns on. The endocrine system is more like city piping, where it's fast, but not as fast. The endocrine system's hormones travel through the blood stream.

Submit
33. Which of the following present the reflex arc in the right order?

Explanation

A reflex arc happens involuntarily, without conscious thought. During the arc, the message is relayed to the receptor and passes through the sensory neuron, then the relay neuron, then directly to the motor neuron and effector. Of course, the brain will still get a message of what's going on, but it won't be immediately and won't affect the reflex arc because it's already done.

Submit
34. What allows inhalation/inspiration?

Explanation

Despite what it feels like, breathing isn't a matter of sucking air in or blowing it out. The air flow is manipulated through pressure differences. Increasing the volume of the lungs makes them have lower air pressure. Because air will travel from places with high pressure to places with low pressure, the air will invite itself into your lungs. The opposite happens when you exhale, where you squeeze your lungs smaller so the air leaves.

Submit
35. Which of the following is FALSE?

Explanation

Both arteries and veins have elastin, but this is of course thicker in arteries.

Submit
36. Match the following in order (starting from Superior/Inferior Vena Cava)
Submit
37. List the organs that are part of the excretory system

Explanation

The excretory system includes the lower part of the digestive tract (intestines and downwards), and also the urinary tract, which includes the kidneys, bladder and erethra. Although urine can come out the penis, it technically isn't included into the body system.

Submit
38. List the components of the respiratory system

Explanation

The upper respiratory tract consists of the nose (and also the oral cavity, cause you can breathe in through your mouth too), larynx (aka voice box) and then the trachea. The lower respiratory tract consists of the lungs, which are joined by bronchus, that split smaller and smaller till it reaches the alveoli. The diaphragm sits below the lungs.

Submit
View My Results

Quiz Review Timeline (Updated): Oct 24, 2024 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Oct 24, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Sep 09, 2018
    Quiz Created by
    Mish K
Cancel
  • All
    All (38)
  • Unanswered
    Unanswered ()
  • Answered
    Answered ()
What is homeostasis?
Match the cells found in blood plasma with their respective duties
A _______ is a junction between two nerve cells, consisting of a...
Which one of these are true?
What is the role of the heart and lungs in gas regulation?
Match the term with the definition
The alveoli are sacs where gas exchange occurs. Oxygen and carbon...
Match the type of neuron with its characteristic
When an impulse arrives to the axon terminals, they depolarise. This...
Why are neurotransmitters deactivated soon after release?
How does ADH (Anti-diuretic hormone) work?
Which of these statements are correct?
Oxygen is carried in the blood stream by a protein called haemoglobin....
What is the role of the hypothalamus and pituitary gland?
What differentiates the somatic nervous system (SoNS) and the...
Which one of these are an accurate metaphor for a negative feedback...
What is the correlation between oxygen saturation in RBC's and...
Label the parts of the kidney
What are the correct charges for each stage?
Match the part of the kidney with its function
How is oxygen and carbon dioxide transported?
What is the function of the ascending and descending limbs in the loop...
Match the nephron parts with its function
Which of the following are FALSE?
Label the parts of a neuron
How are action potentials transmitted between neurons across chemical...
Match the line on the graph with the appropriate description.
Check all the actions that the blood pH regulation loop performs in...
What is blood pH determined by?
Check the following factors that may trigger ADH to be released
Which of the following correctly complete the action potential graph?
Which of these are the characteristics of the nervous system and NOT...
Which of the following present the reflex arc in the right order?
What allows inhalation/inspiration?
Which of the following is FALSE?
Match the following in order (starting from Superior/Inferior...
List the organs that are part of the excretory system
List the components of the respiratory system
Alert!

Advertisement