Biology
What is the chemical formula for glucose
C6H12O6
What is the conservation of energy
Energy is not created or destroyed, total energy of a system remains constant
What is the chemical formula of copper sulfate
CuSO4
This psychological phenomenon occurs when individuals conform to social expectations and behaviors, even if those behaviors go against their personal beliefs.
What is groupthink?
What is the units of moment of a force
N m
Define osmosis
the net movement of water molecules from a region of higher water potential to a region of lower water potential through a partially permeable membrane
A ball of mass 1000g falls of a table with initial speed of 5 m/s, it takes the ball 5s to reach the ground what friction force led the ball to stop
F = ma
a = 5/5 = 1
F = 1kg*1 = 1N
What is an exothermic reaction?
A reaction where heat is released to the surroundings
This branch of psychology studies the mental states, behaviors, and processes of individuals.
What is clinical psychology?
In chemistry, acids and bases are fundamental concepts. When an acid is dissolved in water, it produces hydrogen ions (H⁺). Which statement correctly describes the behavior of acids and bases in an aqueous solution?
■ A) Acids taste bitter, while bases taste sour
■ B) Acids have a pH greater than 7, while bases have a pH less than 7
■ C) Acids release H⁺ ions, while bases release OH⁻ ions in solution
■ D) Acids turn litmus paper blue, while bases turn it red
C
This type of cellular division results in four non-identical daughter cells, each with half the chromosome number of the original cell.
What is meiosis?
What type of wave is sound? A sound wave travels through water with a speed of 300 m/s. If the wavelength of the sound wave is 2 meters, calculate the frequency of the sound wave.
Longitudinal
f = 300/2 = 150Hz
In the electrolysis of concentrated aqueous NaCl, what is produced at the anode and cathode
cathode: H2 gas
anode: Cl2 gas
This condition, often characterized by uncontrollable worry, fear, and tension, is categorized as an anxiety disorder.
What is generalized anxiety disorder?
When an object is in motion, it tends to stay in motion unless acted upon by an external force. Which of Newton's laws of motion describes this principle, highlighting the relationship between an object’s state of motion and forces?
A) First Law
B) Second Law
C) Third Law
D) Law of Universal Gravitation
A) First law
What are the properties of a red blood cell, and what gives it the red colour?
Small enough to squeeze through capillariesNo nucleus or mitochondria so more space for packing haemoglobin
Biconcave disks
Carry oxygen
Large surface area which speeds up rate at which oxygen can diffuse in and out the RBC
Haemoglobin provides red colour
What's the momentum of a ball of mass 250g thrown at a speed of 4m/s
P = mv
P = 0.25*4 = 1 kgm/s
Fe2O3 + 3CO —> 2Fe + 3CO2
What is the oxidising and reducing agent
This part of the brain is responsible for regulating vital functions such as heart rate, breathing, and sleep.
What is the brainstem?
In the context of equilibrium reactions, the concept of dynamic equilibrium describes a state in which the rate of the forward reaction equals the rate of the reverse reaction. If a chemical reaction at equilibrium is subjected to an increase in temperature, how does Le Chatelier's principle predict the system will respond to the change?
A) The equilibrium shifts toward the endothermic direction
B) The equilibrium shifts toward the exothermic direction
C) The equilibrium remains unchanged regardless of temperature changes
D) The direction of the shift cannot be determined without additional information
A
The mitochondria are often referred to as the powerhouses of the cell due to their role in generating adenosine triphosphate (ATP). Which cellular process takes place within these organelles, leading to energy production?
A) Photosynthesis
B) Cellular respiration
C) Protein synthesis
D) Glycolysis
B) Cellular respiration
In physics, the concept of work is defined as the product of force and displacement. If a force of 10 N is applied to move an object 5 meters in the direction of the force, what is the total work done on the object?
A) 10 J
B) 15 J
C) 50 J
D) 100 J
C) 50 J
Diamond is a hard shiny compound made from carbon, describe the shape of the compound, and the angle between each bond
Tetrahedral shape, each bond angle is 109.5 degrees
This structure in the limbic system is crucial for forming new long-term memories and is also involved in spatial navigation. Damage to it can result in anterograde amnesia.
What is the hippocampus?
In the study of motion, Newton’s laws of motion describe the behavior of objects. If an object experiences a net force resulting in acceleration, how does this relationship define the concept of inertia, and what implications does it have for the object’s motion?
A) Inertia increases with mass, making it harder to change the object’s motion
B) Inertia is independent of mass and only depends on velocity
C) Inertia decreases with acceleration, making motion easier to change
D) Inertia applies only to objects in motion, not at rest
A.) Inertia increases with mass, making it harder to change the object’s motion