Cellular Communication, Homeostasis, and Feedback Mechanisms Quiz
Explore cellular biology with questions on organelles, hormones, feedback mechanisms, and more. Test your understanding now!
#1
Which organelle is responsible for the production of ATP through cellular respiration?
Nucleus
Mitochondrion
Endoplasmic reticulum
Golgi apparatus
#2
Which ion is predominantly found outside the cell membrane in the extracellular fluid?
Sodium (Na+)
Potassium (K+)
Chloride (Cl-)
Calcium (Ca2+)
#3
What is the primary function of the endocrine system?
To regulate body temperature
To produce and release hormones
To filter blood
To digest food
#4
Which of the following is an example of a neurotransmitter?
Insulin
Estrogen
Dopamine
Thyroxine
#5
Which organelle is responsible for detoxifying harmful substances in the cell?
Nucleus
Lysosome
Smooth endoplasmic reticulum
Ribosome
#6
What is the primary function of hormones in cellular communication?
To provide structural support
To regulate gene expression
To transmit electrical signals
To facilitate chemical signaling
#7
Which of the following is an example of negative feedback mechanism in human physiology?
Regulation of blood sugar by insulin and glucagon
Increase in heart rate during exercise
Release of adrenaline during fight-or-flight response
Activation of inflammatory response to a wound
#8
Which ion plays a crucial role in the action potential of nerve cells?
Sodium (Na+)
Potassium (K+)
Calcium (Ca2+)
Chloride (Cl-)
#9
What is the role of the hypothalamus in homeostasis?
It regulates body temperature and thirst.
It synthesizes hormones such as insulin.
It filters waste products from the blood.
It coordinates voluntary muscle movements.
#10
Which hormone is responsible for the regulation of blood calcium levels?
Insulin
Glucagon
Parathyroid hormone
Thyroid hormone
#11
Which of the following cellular processes is responsible for the removal of damaged organelles and proteins?
Exocytosis
Phagocytosis
Autophagy
Endocytosis
#12
In cellular communication, what is the primary function of second messengers?
To transmit signals across synapses
To activate intracellular signaling pathways
To synthesize neurotransmitters
To regulate gene expression
Sign In to view more questions.
Quiz Questions with Answers
Forget wasting time on incorrect answers. We deliver the straight-up correct options, along with clear explanations that solidify your understanding.
Popular Quizzes in Cellular Biology
Popular Quizzes in Biology
Report