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WorksheetsPhysiology
Total questions: 20
Worksheet time: 10mins
What is the basic unit of life?
Atom
Organism
Tissue
Cell
Describe the function of the cell membrane.
The cell membrane provides energy for cellular processes.
The cell membrane is responsible for protein synthesis.
The cell membrane regulates the entry and exit of substances, maintaining homeostasis and facilitating communication.
The cell membrane acts as a storage unit for genetic material.
What is homeostasis and why is it important?
Homeostasis is the regulation of internal conditions in organisms, crucial for survival and optimal functioning.
Homeostasis is the process of external environmental changes.
Homeostasis is the ability to grow and reproduce only.
Homeostasis refers to the movement of organisms from one place to another.
Name three examples of homeostatic processes.
Heart rate variability
Temperature regulation, blood glucose control, pH balance
Respiratory rate changes
Nutrient absorption efficiency
What role do feedback mechanisms play in homeostasis?
Feedback mechanisms only amplify changes in the body.
Feedback mechanisms are irrelevant to internal regulation.
Feedback mechanisms solely focus on external environmental factors.
Feedback mechanisms play a crucial role in maintaining homeostasis by regulating internal conditions through detection and response to changes.
Define haemostasis.
Haemostasis is the process of blood cell production.
Haemostasis refers to the movement of blood through the circulatory system.
Haemostasis is the mechanism of oxygen transport in the blood.
Haemostasis is the process that prevents and stops bleeding.
What is the function of platelets in clotting?
Platelets break down old red blood cells.
Platelets produce antibodies for immune response.
Platelets help form a temporary plug at injury sites and activate the clotting process.
Platelets transport oxygen to tissues.
List the main clotting factors involved in the coagulation cascade.
Factor I, II, III, IV, V, VII, VIII, IX, X, XI, XII, XIII
Factor X, Y, Z
Factor 1, 2, 3
Factor A, B, C
How does the intrinsic pathway differ from the extrinsic pathway in clotting?
The intrinsic pathway is faster and activated by external trauma.
The intrinsic pathway is slower and activated by internal damage, while the extrinsic pathway is faster and activated by external trauma.
The extrinsic pathway is slower and activated by internal damage.
Both pathways are activated by the same type of trauma.
What are plasma proteins and their general functions?
Plasma proteins are proteins in blood plasma that maintain osmotic pressure, transport substances, support immune functions, and aid in blood clotting.
Plasma proteins are responsible for producing red blood cells.
Plasma proteins are found in muscle tissue and aid in movement.
Plasma proteins are only involved in digestion.
Name two types of plasma proteins and their roles.
Insulin and cholesterol
Fibrinogen and hemoglobin
Albumin and globulins.
Myoglobin and creatinine
How do albumins contribute to homeostasis?
Albumins are responsible for immune response.
Albumins contribute to homeostasis by maintaining osmotic pressure and transporting substances in the blood.
Albumins primarily function in digestion.
Albumins help in the production of hormones.
What is the significance of fibrinogen in the clotting process?
Fibrinogen is involved in the immune response.
Fibrinogen prevents blood clots from forming.
Fibrinogen is essential for forming fibrin, which stabilizes blood clots.
Fibrinogen is a type of white blood cell.
Explain the role of vitamin K in clotting factor synthesis.
Vitamin K is primarily involved in energy production.
Vitamin K is crucial for the synthesis of active clotting factors by enabling their carboxylation, which is necessary for calcium binding.
Vitamin K is essential for the synthesis of red blood cells.
Vitamin K helps in the absorption of iron in the body.
Which type of blood cells primarily undergo diapedesis?
a) Red blood cells
b) Platelets
c) White blood cells
d) Plasma cells
What is the rarest blood type globally?
a. O+
b. AB-
c. A+
d. B-
Which organelle is responsible for modifying, sorting, and packaging proteins and lipids?
A) Ribosomes
B) Golgi apparatus
C) Rough Endoplasmic Reticulum
D) Smooth Endoplasmic Reticulum
What is the main function of the nucleolus?
A) DNA replication
B) RNA transcription
C) Ribosome production
D) Chromosome condensation
Which of the following molecules can diffuse freely across the plasma membrane without the need for transport proteins?
A) Glucose
B) Sodium ions
C) Oxygen
D) Amino acids
What happens to a red blood cell placed in a hypertonic solution?
A) It swells and bursts (lysis).
B) It shrinks (crenation).
C) It remains the same size.
D) It actively pumps water into the
cell.
