Which of the following materials is considered a complex carbohydrate?
Fine table sugar
Rock salt
White rice powder
Pure olive oil
The element iron is very essential in the human body for the formation of:
Strong bones and teeth
Hemoglobin in the blood
Protection of the thin cell membrane
The plant cell wall
The relationship between photosynthesis and cellular respiration ensures:
A complete depletion of oxygen
A balance in gas ratios
The stoppage of material cycles
A constant increase in carbon
Dietary fibers found in vegetables and fruits help in:
Rapidly increasing body weight
Building chemical hormones
Improving the daily digestion process
Colouring red blood cells
The breakdown of food molecules to produce energy inside the cell is called:
The process of photosynthesis
The process of plant transpiration
The process of cellular respiration
The simple process of fermentation
During photosynthesis, light energy is converted into:
Visible magnetic energy
Mechanical kinetic energy
Audible sound energy
Stored chemical energy
4g of (A) reacted with 6g of (B), producing 9g of (C). What is the mass of product (D)?
2g
4g
3g
1g
Dust particles move randomly in the air in a motion known as:
Thermal diffusion phenomenon
Kinetic conduction phenomenon
Random Brownian motion
Optical radiation phenomenon
Heat is transferred in solid metal objects primarily through:
Thermal diffusion
Thermal conduction
Thermal convection
Thermal radiation
Heat is transferred in liquids through currents called:
Convection currents
Diffusion currents
Conduction currents
Radiation currents
When heat transfers between two bodies, the transfer stops when:
Their temperatures are different
The volume of the cold body increases
Their temperatures become equal
The mass of the hot body decreases
Aerobic cellular respiration primarily requires the presence of:
Carbon dioxide
Hydrogen
Nitrogen
Oxygen
Gases are distinguished from liquids and solids by their high ability to:
Maintain their own shape
Be compressed into a small space
Vibrate in a fixed position
Cohere with very strong forces
Breaking bonds in the reactants and forming new bonds in the products is called:
A real chemical reaction
The process of physical fusion
Physical shape change
The simple process of dissolution
The cellular organelles responsible for the process of light absorption in plants are:
The central nucleus of the cell
Chloroplasts in the cell
Large vacuoles
Mitochondria in the cell
Which of the following elements is considered an important mineral salt for the body?
Carbon
Calcium
A chemical equation consists of two sides always separated by:
A comma
A period
An arrow
An equals sign
he total energy stored within the particles that make up matter is called:
The total mechanical energy
The internal energy of matter
Static electrical energy
Potential chemical energy
Fats are used in the body of a living organism mainly for:
Cooling the body
Energy storage
Transmitting genetic traits
Building muscles and tissues
The sun's energy reaches us through outer space primarily via:
Direct thermal contact
Wave-like thermal radiation
) Gaseous thermal convection
Physical thermal conduction
According to the particle theory, the particles of a single substance are:
Exactly identical in their properties
Completely different from each other
Completely stationary
Visible to the naked eye
A chemical equation must always be balanced to comply with the law of:
Conservation of energy
Earth's gravity
Conservation of mass
Action and reaction
Proteins are made up of very small basic building blocks called:
Simple monosaccharides
Large fatty acids
Water-soluble vitamins
Different amino acids
The main location where photosynthesis occurs in plants is:
Leaves
Stems
Flowers
Roots
The primary function of mitochondria in the cell is:
Producing energy for the cell
Storing water and salts
Carrying out photosynthesis
Controlling cell division
The substances we start a reaction with, found on the left side of the equation, are:
The assisting catalytic agents
The final products
The initial reactants
The resulting soluble salts
If an object's temperature is 20°C, what is its value in Kelvin (K)?
313
273
253
293
A deficiency of vitamin C in a person's daily diet leads to:
Hair loss and dry skin
Poor vision and night blindness
Soft bones and easy fractures
Bleeding gums and weakened immunity
Most stages of cellular respiration for energy production occur inside organelles called:
The small ribosomes of the cell
The internal cytoplasm of the cell
The outer cell wall
The powerful mitochondria
What is the name of the compounds formed from the union of monosaccharides?
Complex carbohydrates
Diverse proteins
Oily lipids
Nucleic acids
The reaction of an acid with a base to produce a salt and water is called:
Chemical exchange
Chemical combustion
Chemical decomposition
Chemical neutralization
A substance that increases the rate of a reaction without being consumed is called:
A catalytic agent (catalyst)
The solid precipitate formed
A sensitive colorimetric reagent
The continuous liquid solvent
The transfer of heat in liquids and gases through the movement of molecules is called:
Strong kinetic friction
Continuous thermal convection
Long-distance thermal radiation
Direct thermal conduction
A gas is released as a byproduct of the photosynthesis process, which is:
Methane
The particles of a solid move continuously but in the form of:
Localized vibrational motion
Extensive translational motion
Rapid rotational motion
Rapid random motion
When a substance gains thermal energy, the speed of its particles:
Remains constant and does not change
) Stops completely
Increases and their motion accelerates
Decreases and their motion slows down
The intermolecular spaces between the particles of matter are greatest in:
The diffused gaseous state
The flowing liquid state
The cohesive solid state
The frozen cold state
Which of the following states of matter is characterized by having a fixed shape and a definite volume?
Solid state
Plasma state
Liquid state
Gaseous state
In the photosynthesis equation: 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂, if the plant consumes 12 water molecules, how many oxygen molecules are produced?
18 molecules
6 molecules
24 molecules
12 molecules
The process of cellular respiration consumes glucose and produces energy along with:
Oxygen gas and liquid water
Carbon dioxide and water
Alcohol and mineral salts
Nitrogen gas and atmospheric dust
The main and fast source for obtaining energy in the human body is:
Simple, easy carbohydrates
Strong animal proteins
Heavy saturated fats
Essential mineral salts
The conversion of complex food into simple, easily absorbed substances is called:
The process of respiration
The process of excretion
The process of digestion
The process of circulation
A chemical reaction that releases heat to the surroundings is called:
A thermally neutral reaction
A simple reversible reaction
An endothermic reaction
An exothermic reaction
Melting occurs when the particles of a substance gain enough energy to:
Increase the bonding forces between them
Reduce the intermolecular spaces
Overcome the attractive forces
Stop the movement of particles
The main product of photosynthesis that stores chemical energy is:
Simple glucose sugar
Dissolved mineral salts
Carbon dioxide gas
Liquid water molecules
Transforming matter from the gaseous state to the liquid state is called:
The process of freezing by cooling
The process of fusion by heat
The process of rapid evaporation
The process of condensation by cooling
The plasma state is a distinct state of matter found prominently in:
Mountains and icy peaks
Oceans and deep seas
Stars and lightning phenomena
The rocky interior of the Earth
Transforming matter from the liquid state to the gaseous state is called:
Evaporation
Condensation
Boiling
Freezing
The gas that plants absorb from the air to carry out photosynthesis is:
Inert nitrogen gas
C) D)
Pure oxygen gas
The green pigment that absorbs light in plants is called:
Dark melanin
Green chlorophyll
Colored carotenoids
Red hemoglobin