What is the difference between ionic and covalent bonds?

Ionic transfers electrons, covalent shares

What is the difference between kinetic and potential energy?

Kinetic is motion, potential is stored

What are the four fundamental forces of nature?

Gravity, electromagnetic, weak, strong

What is the difference between a prokaryotic and a eukaryotic cell?

Eukaryotic cells have a nucleus

What is the difference between autotrophs and heterotrophs?

Autotrophs produce their own food

What is the main function of the endoplasmic reticulum?

Synthesizes proteins and lipids

What is the significance of the periodic law?

Elements are periodic functions of atomic number

What is the principle behind conservation of angular momentum?

Angular momentum remains constant

What is the primary difference between mitosis and meiosis?

Meiosis results in genetic diversity

What is the law of conservation of mass?

Mass is neither created nor destroyed

What is the role of chlorophyll?

Absorbs light for photosynthesis

studbud

Science Competition Questions

99 termsStudBud Administration1 play

Imported from external platform

Flashcards99 cardsFPractice quizPHost liveL

Questions 99

Answers

1
What is the primary function of the kidneys?
Filter waste from the blood
Regulate temperature
Store energy
Digest food
2
How many chromosomes are found in a normal human somatic cell?
23
50
46
44
3
What is the term for the smallest unit of an element?
Ion
Molecule
Atom
Compound
4
What is the role of the hypothalamus in the endocrine system?
Produces oxygen
Controls digestion
Pumps blood
Regulates hormone release
5
What is the term for the genetic makeup of an organism?
Genotype
Phenotype
Allele
Genome
6
What is the boiling point of water in degrees Celsius?
100°C
50°C
0°C
200°C
7
What is the term for the amount of matter in an object?
Density
Volume
Weight
Mass
8
What is the role of ATP in cellular processes?
Provides energy
Stores oxygen
Transports lipids
Builds proteins
9
What is the significance of the Krebs cycle?
Stores genetic information
Produces electron carriers
Converts ATP to ADP
Breaks down proteins
10
What is the term for the energy required to start a chemical reaction?
Kinetic energy
Thermal energy
Activation energy
Potential energy
11
What is the unit of measurement for frequency?
Hertz (Hz)
Watt (W)
Joule (J)
Newton (N)
12
What is the function of the lymphatic system?
Produces hormones
Maintains fluid balance
Pumps oxygen
Digests fats
13
What is the primary cause of ocean tides?
Earthâ€™s rotation
Sunâ€™s heat
Gravitational pull of the Moon
Wind currents
14
What is the main function of the respiratory system?
Digest food
Transmit signals
Facilitate gas exchange
Pump blood
15
What is the chemical symbol for water?
HO
HW
O2
H2O
16
What is the difference between ionic and covalent bonds?
Neither involves electrons
Ionic transfers electrons, covalent shares
Ionic shares electrons, covalent transfers
Both are the same
17
What is the role of chlorophyll in photosynthesis?
Absorb light energy
Store sugar
Transport water
Break down glucose
18
What is the main organ of the circulatory system?
Liver
Kidney
Lungs
Heart
19
What is the difference between kinetic and potential energy?
Neither are physical forms of energy
Potential is motion, kinetic is stored
Both are the same
Kinetic is motion, potential is stored
20
What is entropy in the context of thermodynamics?
Energy stored in bonds
Heat absorption
Measure of disorder
Temperature regulation
21
What is the scientific name for the study of living organisms?
Biology
Physics
Chemistry
Geology
22
Which planet is known as the Red Planet?
Jupiter
Saturn
Mars
Venus
23
What is the powerhouse of the cell?
Nucleus
Mitochondria
Golgi Apparatus
Ribosome
24
What are the four fundamental forces of nature?
Gravity, electromagnetic, weak, strong
Mechanical, electrical, nuclear, chemical
Sound, heat, light, magnetic
Thermal, chemical, gravitational, nuclear
25
What is the difference between a prokaryotic and a eukaryotic cell?
Both have chloroplasts
Both have mitochondria
Prokaryotic cells have a nucleus
Eukaryotic cells have a nucleus
26
What is the role of the Golgi apparatus?
Creates energy
Modifies and packages proteins
Stores lipids
Produces ATP
27
What is the name of the process by which DNA is copied to RNA?
Mutation
Replication
Translation
Transcription
28
What is the difference between autotrophs and heterotrophs?
Heterotrophs make their own food
Both rely on sunlight
Both consume other organisms
Autotrophs produce their own food
29
What type of bond involves the sharing of electron pairs between atoms?
Ionic bond
Hydrogen bond
Covalent bond
Metallic bond
30
What is the name of the process by which a liquid changes into a gas at any temperature?
Freezing
Evaporation
Sublimation
Condensation
31
What is the main function of the endoplasmic reticulum?
Breaks down waste
Regulates temperature
Stores DNA
Synthesizes proteins and lipids
32
What is the term for a substance that speeds up a chemical reaction?
Enzyme
Product
Reactant
Catalyst
33
What is the primary function of the myelin sheath?
Stores calcium
Protects red blood cells
Speeds up nerve impulses
Breaks down sugars
34
What is the role of ribosomes in a cell?
DNA replication
Energy production
Lipid storage
Protein synthesis
35
What do you call the change of a substance from solid to liquid?
Melting
Freezing
Sublimation
Condensation
36
What is the role of the chloroplast in plant cells?
Protein synthesis
Respiration
Photosynthesis
DNA storage
37
Which gas is produced as a byproduct of cellular respiration?
Nitrogen
Hydrogen
Carbon dioxide
Oxygen
38
In which part of the cell does cellular respiration occur?
Nucleus
Mitochondria
Ribosome
Chloroplast
39
What is the chemical formula for glucose?
NaCl
C6H12O6
C2H7O13
CO2
40
What is the role of the pancreas in digestion?
Pumps blood
Absorbs nutrients
Produces digestive enzymes
Stores bile
41
What is the speed of light in a vacuum?
299,792 km/s
500,000 km/s
100,000 km/s
150,000 km/s
42
What is the significance of the periodic law?
Atoms always have the same mass
Metals are non-reactive
Elements are periodic functions of atomic number
All elements are gases
43
What is the primary purpose of the cell membrane?
Regulate what enters and exits
Produce proteins
Store DNA
Generate energy
44
Which gas do plants absorb from the atmosphere during photosynthesis?
Carbon dioxide (COâ‚‚)
Hydrogen
Nitrogen
Oxygen
45
What is the principle behind conservation of angular momentum?
Objects move in straight lines
Angular momentum remains constant
Gravity increases speed
Energy is never lost
46
What is a biome?
A major community of organisms
A type of bacteria
A single species
A cell structure
47
What is the primary difference between mitosis and meiosis?
Meiosis results in genetic diversity
Both result in haploid cells
Both occur only in bacteria
Mitosis creates unique cells
48
What is the role of the hypothalamic-pituitary axis?
Filters waste
Regulates hormones
Controls blood pressure
Produces proteins
49
What is the law of conservation of mass?
Mass is unlimited
Mass can be destroyed
Mass is neither created nor destroyed
Mass can be created
50
What is the role of chlorophyll?
Stores water
Breaks down glucose
Absorbs light for photosynthesis
Produces oxygen
51
What is the role of DNA in cells?
Produces energy
Stores genetic information
Regulates temperature
Synthesizes proteins
52
What is homeostasis?
Stable internal conditions
Unstable body functions
A form of reproduction
Constant temperature
53
How many bones are in the adult human body?
206
208
207
205
54
What is the Hardy-Weinberg principle?
Explains natural selection
Predicts animal migration
Describes genetic equilibrium
Measures plant growth
55
What is the principle behind a lever?
Amplifies force
Stores energy
Reduces gravity
Converts heat
56
What is the significance of the double helix structure of DNA?
Stores proteins
Produces energy
Allows accurate replication
Prevents mutations
57
What is the largest planet in our solar system?
Mars
Jupiter
Earth
Saturn
58
What type of energy is stored in food?
Potential energy
Chemical energy
Kinetic energy
Thermal energy
59
What is the primary component of the Earth's atmosphere?
Hydrogen
Nitrogen
Oxygen
Carbon dioxide
60
What is the process of genetic recombination?
Exchange of genetic material
DNA deletion
Mutations forming new genes
Gene cloning
61
What is the process of converting a gas to a solid called?
Sublimation
Deposition
Evaporation
Condensation
62
What is the name of the process by which liquid turns into vapor?
Freezing
Evaporation
Sublimation
Condensation
63
What is the Heisenberg Uncertainty Principle?
Energy is always constant
Electrons stay fixed
Mass is created in reactions
Position and momentum cannot both be known
64
What is the pH level of pure water?
0
5
14
7
65
What is the formula for calculating force?
E = mcÂ²
F = ma
V = IR
P = IV
66
What is the primary function of red blood cells?
To remove waste
To fight infections
To clot blood
To transport oxygen
67
Which organ is responsible for detoxifying chemicals in the body?
Heart
Liver
Lungs
Kidneys
68
What is the main function of enzymes in biological reactions?
Break down water
Transport molecules
Speed up chemical reactions
Store energy
69
What is the primary function of the large intestine?
Store bile
Digest proteins
Filter blood
Absorb water and electrolytes
70
What is the role of neurotransmitters in the nervous system?
Transport blood
Transmit signals between neurons
Store calcium
Digest proteins
71
What is the most abundant gas in the Earth's atmosphere?
Carbon Dioxide
Nitrogen
Hydrogen
Oxygen
72
What are the three states of matter?
Solid, liquid, gas
Plasma, gas, solid
Ice, steam, water
Liquid, solid, vapor
74
What is genetic recombination?
Creation of new genes
Exchange of genetic material
Mutation in DNA
Replication of chromosomes
75
What is the basic building block of proteins?
Lipids
Carbohydrates
Amino acids
Nucleotides
76
What is the basic unit of life?
Organism
Cell
Molecule
Atom
77
What is the process by which plants make their food?
Fermentation
Photosynthesis
Digestion
Respiration
78
What is the formula for calculating work done?
P = IV
F = ma
W = Fd
E = mcÂ²
79
What is the role of the pancreas in digestion?
Stores bile
Breaks down red blood cells
Produces digestive enzymes
Absorbs nutrients
80
What is the difference between speed and velocity?
Velocity is scalar
They are the same
Speed includes direction
Velocity includes direction
81
What is the function of the cytoskeleton?
Produces hormones
Breaks down fats
Provides structural support
Stores water
82
What is the chemical formula for table salt?
KCl
NaOH
NaCl
HCl
83
What is the main gas found in the air we breathe?
Nitrogen
Oxygen
Hydrogen
Carbon Dioxide
84
What element does 'O' represent on the periodic table?
Oganesson
Gold
Osmium
Oxygen
85
What is the main function of white blood cells?
Clot blood
Digest food
Carry oxygen
Fight infections
86
What is the function of red blood cells?
Fight infection
Store sugar
Produce energy
Carry oxygen
87
What is the scientific term for the breakdown of glucose to produce energy?
Cellular respiration
Photosynthesis
Fermentation
Digestion
88
What is the difference between an element and a compound?
Elements have one type of atom
Compounds have one type of atom
Compounds are elements
Elements are compounds
89
What is the difference between genotype and phenotype?
Genotype changes over time
Phenotype is stored in DNA
Genotype is genetic makeup, phenotype is traits
Phenotype determines genes
90
What is the difference between a saturated and unsaturated fat?
Saturated fats are liquid
Unsaturated fats are solid
Saturated fats have double bonds
Unsaturated fats have double bonds
91
Which scientist proposed the theory of evolution by natural selection?
Charles Darwin
Gregor Mendel
Albert Einstein
Isaac Newton
92
What is the law of independent assortment in genetics?
Only physical traits are inherited
Traits segregate independently
Dominant traits overpower recessive ones
Genes always stay together
93
What is the name of the force that pulls objects toward the Earth?
Inertia
Gravity
Friction
Magnetism
94
What are the four fundamental forces of nature?
Sound, heat, light, mechanical
Magnetic, frictional, elastic, nuclear
Gravitational, electromagnetic, weak, strong
Thermal, chemical, nuclear, gravitational
95
What is the term for the variety of life in a particular habitat or ecosystem?
Population
Biome
Biodiversity
Ecosystem
96
What part of the brain is responsible for coordinating voluntary movements?
Medulla
Cerebellum
Cerebrum
Hypothalamus
97
What is the main function of the skeletal system?
To pump blood
To absorb nutrients
To filter waste
To provide support and structure to the body
98
What type of reaction occurs when an acid reacts with a base?
Reduction
Neutralization
Oxidation
Combustion
99
What is the most common type of rock on Earth's surface?
Metamorphic rock
Limestone
Igneous rock
Sedimentary rock

Science Competition Questions Flashcards | StudBud