WorksheetsActual September 2023
Total questions: 180
Worksheet time: 2hrs 30mins
What is the unit of heredity?
gamete
gene
sperm
cell
What is the full name of GPS?
Geo-positioning system
Global positioning system
Geo-positioning satellite
Global positioning satellite
The process of physical division in eukaryotic cell which enables growth and production of worn out cell is known as
Mitosis
Prokaryotic
Meiosis
Cytokinesis
Fatty acids whether saturated and unsaturated is classified as
Amino acids
Lipids
Enzymes
Carbohydrates
Arrange the following from smallest to largest.
Molecule-atom-tissue-cell
Atom-molecule-cell-tissue
Cell- tissue- atom molecule
Tissue-cell-molecule-atom
Highest classification in plants and animals.
Kingdom
Order
Species
Domain
Environmental scientist 200 years ago who predicted that climate change will occur.
Joseph Fourier
Al Gore
Eugene Odom
Alexander Von Humboldt
The chemical name for water as a compound which consists of two atoms of hydrogen and one atom of oxygen is _________.
Dihydrogen monoxide
Hydrogen monoxide
Hydrogen dioxide
Hydrogen monosulfide
The study of features and characteristics of metals and minerals is called_______.
Biochemistry
Inorganic Chemistry
Organic chemistry
Nuclear chemistry
Recent DNA shows that the domesticated dogs from different home, the wolf from the forest and the Chihuahua from Mexico demonstrate occurrence of similarities but belongs to different ______.
Phylum
Family
Species
Order
If the speed of the object is doubled what quantity of other must also be doubled?
Force
Kinetic
Acceleration
Momentum
What is one of the few molecules that can pass through a cell membrane through diffusion?
Soil
Heat
Water
Blood
Which is the most abundant element in the body comprising of 65%?
Carbon
Hydrogen
Oxygen
Nitrogen
Cell, the basic unit of life was discovered by _____.
Darwin
Watson
Mendel
Hooke
Considering the following statement when an elevator rising at constant speed I. The upward cable forces is at constant II. The kinetic energy of the elevator is constant III. The acceleration of the elevator is zero IV. The mechanical energy of the earth-elevator system is constant.
I and II
III and IV
I, II, and III
II, III and IV
Which does not belong to the group?
Worm
Bacteria
Fungi
Virus
Who proposed a widely used five-kingdom classification system for living organisms in the 20th century?
Carl Linnaeus
Charles Darwin
Robert Hooke
Robert Whittaker
What do you call the reaction between sodium and chloride to form salt?
Acidification
Alkalization
Ionization
Neutralization
A test that determines to which there are three or more independent samples/variables.
Regression test
ANOVA
T-test
Z-test
What describes objects that occupy space and have mass?
Volume
Density
Matter
Weight
Vaccination for small pox vaccine is to Edward Jenner, as vaccines for anthrax and rabies are to __.
Leeuwenhoek
Curie
Pasteur
Fleming
He is the scientist who Named/identified MANY elements like carbon, oxygen, hydrogen.....
Friedrich Wohler
Antoine Lavoisier
John Dalton
Avogadro
The observable characteristics such as skin color and facial features is to “phenotype" while behavior and temperament is to ____.
Mutagen
Genotype
Mutation
Genomics
The radiation that comes from the sun is called __.
Isobar
Insolation
Ray
Ozone
In homeostatic, receptor is to skin and effector is to_____.
Eyes
Nerves
Nose
Glands
Phenotype concerns about physical attributes of organisms such as
Physical features
Temperament
Habit
Behavior
Result of polymerization of smaller compounds
monomer
synthesis
macromolecule
compound
The least harmful energy in the atmosphere because it does not emit pollution is ___________.
Slash and burn
Fossil fuel
Nuclear Energy
Dry cell energy
Cordillera: Mountain biome; Indigenous: ________biome?
Ocean
Aquatic
Grassland
Forest
CBC is to blood chemistry test, as Covid-19 is to ______ test.
Aspirate culture and sensitivity
Reverse Transcription Polymerase Chain Reaction
CSF culture and sensitivity
Saliva culture and sensitivity
In some cases of bacterial infections, medicine that kills bacteria or preventing it from producing or spreading is the _____.
Anthelmintic
Diuretic
Antibiotic
Vaccine
Eutrophication which causes the depletion of dissolved oxygen in water results in ______.
decrease in dissolved nutrients
abundance in aquatic plants
decreased sea harvest
abundant sea harvest
The following are the steps in conducting scientific research; arrange them in chronological order: I. Formulate hypothesis II. Conclusion and Recommendation III. Identification of the problem IV. Data gathering V. Search for Related Literature VI. Analysis and Interpretation of data
V III IV I II VI
III V IV I VI II
I II III IV V VI
III V I IV VI II
A type of physical combination in which all the substance are evenly distributed throughout the mixture is as referred to as_____
element
Homogeneous
Heterogeneous
Compound
A type of chemical process within and in relation to living organism____
Biotechniques
Biochemistry
Biology
Microbiology
What is true about the white light hitting a polarized plate or what happens when light passes through a Polaroid plate? [2x]
90% pass
Half of the light
blocked/0
Equal
What virus can’t be detected by RT-PCR TEST?
Pneumonia
Covid19
Small Pox
Flu
What is the shape of the Andromeda Galaxy which has a nuclear bulge that has outward parts?
Elliptical
Irregular
Normal Spiral
Barred Spiral
What sphere on earth that life exist
Stratosphere
biosphere
Lithosphere
atmosphere
Having complex organelles and outbound nucleus and an example of this is Fungi. What is it called?
Protist
Eukaryote
Prokaryote
Plant
Sex/reproductive cells are referred to as ____.
Proton
Gamete
Molecule
Nucleus
All of the following are examples of conduction, except
Ironing of clothes
Heating a pan on stove
Snow/rain
Melting of ice in your hand
Arrange from MOST dangerous to LEAST dangerous: Pollution, Climate Change, Alien Species, Loss of Habitat.
Climate change Pollution Loss of habitat Alien Species
Pollution Climate Change Loss of Habitat
Alien Species Climate Change Pollution Loss of Habitat
Pollution Loss of habitat Climate ChangeAlien Species
Orangutan, chimpanzee and gorilla are classified.
Primates
Predator
Monkey
Chordates
Who is the father of modern microbiology?
Antoine van Leeuwenhoek
Edward Jenner
Louis Pasteur
Gregor Mendel
Which of the following has a low melting point, insolubility in water, but soluble in ether are characteristics of compound called ______.
Carboxylic
Organometallic
Triglycerol
Sulfuric
What is a possible consequence of eutrophication?
Water that is colourless and colour-free
Significantly diminished sea harvest by fishermen
Decreased toxicity of bodies of water
Less turbidity of water
What is the meaning of the abbreviation RT-PCR?
Randomized Trial Polymerase Chain Reaction
Rapid Testing Polymerase Chain Reaction
Real-time Reverse Transcription Polymerase Chain Reaction
Rapid Trial Polymerase Chain Reaction
A laboratory device that is used for the separation of fluids, gas or liquid, based on density. Separation is achieved by spinning a vessel containing material at high speed; the centrifugal force pushes heavier materials to the outside of the vessel.
Spectrophotometer
Centrifuge
Chromatograph
Autoclave
The process of physical division in eukaryotic cell which enables growth and production of worn out cell is known as
Eukaryotic
Prokaryotic
Meiosis
Cytokinesis
What virus cannot be detected by RT-PCR test?
retrovirus
covid19
small pox
ebola virus
A statistical tool that is used to compare two individual groups?
Regression Analysis
T-Test
Correlation Coefficient
ANOVA (Analysis of Variance)
Mean, median, mode, standard deviation. What kind of statistics?
Descriptive Statistics
Inferential Statistics
Predictive Statistics
Analytical Statistics
Who is the father of organic chemistry?
Dmitri Mendeleev
Robert Boyle
Louis Pasteur
Friedrich Wöhler
Who is the father of inorganic chemistry?
Alfred Werner
Dmitri Mendeleev
Robert Boyle
Joseph Priestley
Who is the father of ecology?
Alexander von Humboldt
Gregor Mendel
Rachel Carson
Ernst Haeckel
A woman holds a makeup mirror with a radius of curvature of 120 cm a distance of 20 cm from her face. What is the magnification of the observed image?
1.5
-2.5
It is the science that studies the origin and evolution of the universe?
astrophysics
cosmology
Crystalline substance that is insoluble in water but soluble in solvent
carbohydrates
lipids
Budding, Fragmentation, fission and regeneration are examples of _____.
Asexual Reproduction
Sexual Reproduction
Hybrid Reproduction
External Reproduction
Organisms such as vulture and bacteria that get their food from decaying plants and dead animals are described as ___________.
holozoic
Autotroph
parasitic
Saprophyte
Society determine which scientific and technological projects it resources should spent and vice versa. Science and technology provide modern product and process to society. Such relationships is described as _______.
distinction
reversible
reciprocal
co-optation
Which of the following appliances consumes the most electricity?
Refrigerator
TV
Aircon
Washing machine
If a lion and a tiger are both the same, they differ because they came from different ____.
Genus
Species
Order
Habitats
What is true of all combinations of resistors arranged in parallel?
I. Current splits down each leg of the combination.
II. Voltage is constant across each leg of the combination.
III. Resistance is the same for each leg of the combination
I and II
I and III
When a wave encounters a slit, it is ______.
Diffracted
Refracted
Reflected
Polarized
The formation or building of mountains is best explained by the ______.
gradual accretion of material from the upper mantle
theory of plate tectonics
cooling and contracting of Earth’s surface
gradual accretion of material in the lower mantle
What is the radius in nm of the electron orbit of a hydrogen atom for n=3?
0.356 nm
0.477 nm
0.377 nm
0.456 nm
The process which is NOT a type of mechanical disintegration is ______.
frost wedging
oxidation
abrasion
roof penetration
Only about 50% of the solar directed toward Earth penetrated directly to the surface. What happens to the rest of the radiation?
It loses energy travelling through space
It is absorbed or reflected by the atmosphere
It loses energy overcoming the sun's gravity
It is reflected off the moon and back into space
The active component in a vaccine which generates immune response that warns the body of the presence of a harmful element is called?
stem cell
antigen
antibody
cell wall
Dialysis is to medical biochemistry, as diet therapy is to ___.
Nutritional biochemistry
Industrial biochemistry
Pharmaceutical biochemistry
Agricultural biochemistry
Which animals belong to the same group EXCEPT?
cat, cheetah and leopard
dog, fox and wolf
whales, sharks and dolphins
moose, elk and deer
A Fungi is called?
Protist
Eukaryote
Prokaryote
Plant/Nucleus
The successful sequencing of all genes in human body was the first recognize?
Human Genome Project
Cooperation Biotechnology
Partnership Cooperative
International Biotechnology
What government agencies that monitor earthquake?
PHILVOLCS
DICT
DOST
PAGASA
Reasons why other places have longer daylight hours.
Latitude
Date
Sea level
Moon's phase
What type of evolution in which an organism from a common ancestor gradually develop into a new species to adapt into its new habitat?
Convergent
Divergent
Homogeneous
Parallel
For Science to progress, it should include both knowledge and process. To develop this, which is referred to scientific ________.
Form and Format
Attitude and practice
Content and Methods
Source and Purpose
Cows are primary consumers and humans are secondary consumers. What are humans?
Carnivores
Omnivores
Herbivores
Parasites
To separate a 0.25-C charge from another charge, 30J of work is done. What is the electric potential energy of the charge?
120 J
30 J
15 J
7.5 J
Which is healthy for the brain, and don’t increase blood sugar?
Saturated fats
Carbohydrates
Proteins
Vitamins
The union of an ovum and a sperm inside a test tube is called ____ fertilization.
in vivo
asexual
in vitro
sexual
Zebra and horse are similar just as lion and jaguar are also similar, but the two pairs have different characteristics because they belong to different _____.
Species
Genus
Order
Family
A mango tree is planted beside a Sampaguita plant in a garden. They demonstrate the following relationship.
Commensalism
Mutualism
Parasitism
Competition
A special type of cell division of germ cells in sexually producing organisms that is used to produce egg and sperm is called
Reaction
Meiosis
Reproduction
Mitosis
The process in which a molecule decomposed of different molecules inside a cell and release energy in a process is referred to as
Single displacement
Allergic reaction
Double displacement
Biochemical reaction
Acknowledge as the Father of Microbiology, he discover germs as the cause of disease, fermentation is caused by microorganism and ways of destroying microbes in the liquid, and he is _________.
Edward Jenner
Louise Pasteur
Robert Jenner
Alexander Fleming
The care and protection of historical structures is to heritage conservation and moderate consumption is______.
forest conservation
nature conservation
energy conservation
food conservation
The combination of 2 or more substance in which the identities of the individual substance are retained is called
pairing
Bond
Union
Mixture
Native people of Cordillera live in mountain biome, Indigenous people in cordillera live in _____ biome
aquatic
Grassland
Forest
Ocean
What matter is formed by particles made up of atoms, molecules, and/or ions which are well-separated and without regular arrangement?
Plasma
Liquid
Gas
Solid
Which is/are (an) advantage/s of the coming of Genetically Modified Organisms (GMO)?
I. Improved resistance of plants to diseases, pests, and herbicide
II. Increased maturation time of fruits
III. Enhanced taste and quality
II and III
I and III
Which is one disadvantage of Genetically Modified Organisms (GMO)?
Potential human health impact like allergens
Reduced maturation time
Fast food production
High cost of GMO food items
Who is the father of modern ecology?
Charles Darwin
Ernst Haeckel
Rachel Carson
Eugene Odum
In the complicated food chain. Humans act as primary consumers and plants as ________.
Secondary Consumers
Producers
Decomposers
Tertiary Consumers
The following are deficiency in chromosomes in Turner syndrome except?
Hearing impairment
paralysis
Leukaemia
Diabetes
What causes ADHD?
Genetic Factors
Environmental Toxins
Excessive Screen Time
Dietary Habits
What is the process in which smaller molecules combine to form larger molecules, and these monomers release water molecules as by-product?
Polymerization
Hydrolysis
Dehydration Synthesis
Monomerization
Which chemical process uses water to break down polymers into monomers?
Hydrolysis
Polymerization
Condensation
Dehydration Synthesis
Which unit is a polymerase?
Enzyme
Nucleotide
Protein
Monomer
What is the process in humans where two specialized cells, each carrying half the genetic material, combine during sexual reproduction?
Somatic Cells
Zygotes
Gametes
Mitosis
What is the primary source of energy that is a food for the brain and aids in digestion?
Proteins
Carbohydrates
Vitamins
Fats
How is heredity transferred from parents to offspring?
Chromosomes
Genes
Proteins
Hormones
What is the primary reasons for the deflection of wind at the North and South?
Magnetic forces
Gravitational pull
Coriolis effect
Ocean currents
Which statement best describes a scientific theory?
A well-substantiated explanation of some aspect of the natural world
A random hypothesis
Which agency is responsible for managing and monitoring typhoons in the Philippines?
PAGASA
National Weather Service
Saturated and unsaturated fats are classified as _____?
Carbohydrates
Lipids
What is the highest level in taxonomy, used to classify all living organisms into broad categories?
Kingdom
Family
Who made significant contributions to science by discovering the elements silicon, oxygen, and hydrogen?
Antoine Lavoisier
Jöns Jakob Berzelius
Which term involves using the relationship between reactants and/or products in a chemical reaction?
Chemical Equation
Stoichiometry
What is the study of the distribution of animals in different landscapes called?
Zoogeography
Ecology
Who won the Nobel Prize for their work on metal-ligand binding?
Alfred Werner
Linus Pauling
Unsaturated fats are predominantly found in ___.
Animals
Plants
What is the term for face-to-face questioning used in researching data gathering?
Survey
Interview
What is the first recognized genetically modified organism (GMO) created through genetic engineering?
Bt Cotton
Roundup Ready Soybeans
Flavr Savr Tomato
Golden Rice
What is the term for a complex cellular and membrane-bound organism like fungi?
Prokaryote
Eukaryote
Archaeon
Protist
Which term refers to the phenomenon where a substance emits light after exposure or afterglow to external light and continues to do so even after the external light source is removed?
Fluorescence
Phosphorescence
Incandescence
Bioluminescence
What is the densest point in the universe, where the gravitational pull is so strong that not even light can escape?
White Dwarf
Neutron Star
Black Hole
Supernova
How do plants convert sunlight into energy?
Photosynthesis
Respiration
Transpiration
Chlorophyll Reaction
Which is a desired action of an environmentalist EXCEPT ____?
Conserving natural habitats
Reducing carbon emissions
Using pesticides
Promoting recycling and waste reduction
Gasoline, plastics, medicine are created by chemical reactions and made possible through ______.
Biochemistry
Chemical Bonding
Inorganic Chemistry
Organic Chemistry
Human is the primary consumer while plant is ______ in the integrated ecosystem?
Producers
Secondary Consumers
Decomposers
Carnivores
What term describes a relationship in which both parties give and take equally?
Symbiotic
Reciprocal
Mutualistic
Synergistic
What is the definition of organic chemistry?
The study of carbon-containing compounds
The study of inorganic substances
The study of minerals and rocks
The study of physical properties of matter
Who is known as the Father of Taxonomy?
Charles Darwin
Carolus Linnaeus
Gregor Mendel
Louis Pasteur
Mitosis is for growth and repair as meiosis is for ______ in animal cells.
Cell Differentiation
Asexual Reproduction
Sexual Reproduction
Tissue Regeneration
What term describes the evolutionary relationship between organisms based on their ancestral lineage?
Phylogeny
Ontogeny
Taxonomy
Morphology
Cause of earth's albedo.
Acid rain
Smog
Nitrogen oxide
Particulates
Which statement(s) is/are true of mitosis and meiosis in sexual reproduction?
Mitosis produces identical diploid daughter cells, while meiosis produces non-identical haploid gametes.
Mitosis occurs in somatic cells, while meiosis occurs in germ cells.
Mitosis has one round of cell division, while meiosis involves two rounds of cell division.
All of the above
What is the process used to break down fat molecules in milk into smaller particles, creating a uniform consistency in products like milk and ice cream?
Pasteurization
Homogenization
Fermentation
Emulsification
Total amount of energy in the universe is _____.
Zero
Infinite
Undefined
None of the above
What is the unique characteristic of a molecule that can bond with other atoms in diverse ways, forming the backbone of organic compounds?
Hydrogen
Oxygen
Nitrogen
Carbon
What type of chemical bonding occurs between a metal and a non-metal, resulting in the transfer of electrons?
Covalent bonding
Metallic bonding
Ionic bonding
Polar bonding
What is the term for a point in space where gravitational forces cause matter to be infinitely dense, often associated with the core of a black hole?
Singularity
Event Horizon
Nebula
Quasar
A molecule that can pass through phospholipid layer.
Water
Carbon
Glucose
Amino acids
What is the chemical that carries genetic material in the body?
DNA
RNA
Protein
Lipids
Colorless crystalline solid soluble in water insoluble in solvent.
Sugar
Salt
Wax
Oil
What do you call when two different organism develop similar characteristics as a result of same needs in the environment?
convergent
divergent
Homology
Parallel Evolution
In an ordinary biological laboratory for undergraduate courses, which kind of microscope is most practical for study of microorganisms magnified a few thousand times?
digital
electron
stereo
light
Microscope for magnifying objects at maximum level with high resolution.
digital
electron
compound
light
Which of the following correctly describes the differences between a chemical equation, a chemical structure, and a chemical formula?
Chemical Equation: Represents the types and number of atoms in a compound. Chemical Structure: Shows the arrangement of atoms in a molecule. Chemical Formula: Represents a chemical reaction using symbols and formulas.
Chemical Equation: Represents a chemical reaction using symbols and formulas. Chemical Structure: Shows the arrangement of atoms in a molecule. Chemical Formula: Represents the types and number of atoms in a compound.
This is a natural form of energy.
electric lights
neon lights
laser lights
Sun
How do humans utilize the sun's energy?
Solar Panels
Wind Turbines
Fossil Fuels
Nuclear Reactors
Potential is to power bank as moving electric fan is to _____.
Kinetic
Mechanical
Chemical
Thermal
What is the harmful component of sunlight that can cause various health issues, including skin damage and cancer?
Infrared Radiation
Visible Light
Ultraviolet (UV) Rays
X-rays
What is the government agency in the Philippines responsible for monitoring and mitigating volcanic eruptions, earthquakes, and other geologic hazards?
DENR
PAGASA
DOH
PHIVOLCS
Who is the author of the book "On the Origin of Species”?
Charles Darwin
Albert Einstein
Marie Curie
Isaac Newton
What is the primary effect of technology in transportation?
Decreased Accessibility
Reduced Efficiency
Increased Mobility
Limited Connectivity
What is the term for a chemical reaction where a molecule gains or loses oxygen?
Oxidation
Reduction
Redox Reaction
Neutralization
The study of genetic variation of a group of people in a community over a period of time and to see if there will be a changed in genetic information?
Genomic Sequencing
Genetic Mutation
Population Genetics
Hereditary Analysis
Arrange in chronological order: I. Genetic engineering II. DNA sequencing III. Darwin's evolution theory IV. Genetic medicine V. Gregor Mendel's heredity
III, IV, II, I, IV
V, III, II, I, IV
III, V, I, II, IV
V, III, I, II, IV
Kingdom is largest and inclusive while ______ is smallest and least inclusive.
Species
Genus
Family
Order
Which statement is NOT true of the cell theory?
All living organisms are composed of one or more cells.
The cell is the basic unit of life in all organisms.
All cells have a nucleus.
Cells come from pre-existing cells through cell division.
Which is not considered as a biomolecule?
Calcium
Lipids
Carbohydrates
Protein
Represents a chemical reaction using sign and symbols.
Molecular structure
Molecular equation
Molecular process
Molecular phenomenon
Which often occurs in the month of June and July?
Whimsical
Heat Wave
Drizzle
Eclipse
Who pioneered the study of molecular asymmetry?
Marie Curie
Louis Pasteur
Isaac Newton
Albert Einstein
Who discovered that microorganisms cause fermentation and disease; originated the process of pasteurization, saved the beer, wine, and silk industries in France?
Marie Curie
Louis Pasteur
Isaac Newton
Albert Einstein
Which scientist is credited with the concept of natural selection in the process of evolution?
Marie Curie
Gregor Mendel
Charles Darwin
Albert Einstein
Earliest to modern history of biology, which comes first?
Theory of evolution (1859)
Gregor Mendel (1866)
GMO
Medicine
Which term is used to describe infants conceived through in vitro fertilization?
Tube Babies
IVF Babies
Test Tube Babies
Lab Babies
What happens when two waves meet and coincide in such a way that they amplify each other's amplitude?
Constructive Interference
Destructive Interference
Wave Cancellation
Neutral Interference
Which pigment is responsible for the green color in plants and plays a crucial role in photosynthesis?
Carotene
Melanin
Chlorophyll
Hemoglobin
Which structure is a specific part of a plant cell where photosynthesis occurs?
Chloroplast
Mitochondria
Which type of chemical reaction involves the exchange of ions between two compounds, leading to the formation of two new compounds?
Double Displacement
Single Displacement
Med Biotechnology: CT Scanners, Health Biotech: ________
X-ray
Disease
What phenomenon describes the emission of electrons from a material when it is exposed to light or other electromagnetic radiation?
Photoelectric Effect
Quantum Tunneling
What term describes the practice of cultivating fish and other aquatic organisms in controlled environments such as ponds, tanks, or cages for commercial
Hydroponics
Aquaculture
In human personality, where do habits originate?
Combination of Nature and Nurture
Environmental Influences
Who is often credited with introducing the modern atomic theory in the early 19th century?
John Dalton
Albert Einstein
Which of the following activities involves conducting experiments, making observations, and analyzing data in a controlled environment for scientific research?
Field Research
Laboratory Work
What is the term used to describe the movement of solvent molecules from an area of lower solute concentration to an area of higher solute concentration through a semipermeable membrane?
Osmosis
Diffusion
Reaction in organic chemistry can be understood by movement of _______ in space.
Molecule
Electron
What laboratory apparatus that is named after a German chemist that can hold solutions?
Erlenmeyer flask
Beaker
A reaction in which two molecules combine to form a single molecule. A small molecule, usually water is often removed.
Neutralization
condensation
The Environmentalist who predicted or informed the world of the danger of climate change.
Joseph Fourier
Al Gore
What is the most reliable form of energy?
Nuclear Energy
Non-renewable Energy
The Arabs who were excellent geographers and navigators perfected the _____ navigational instruments to determine the altitude of stars and planets.
Sunglass
Astrolabe
As technology connotes an human invention which of the following is mechanical technologically?
Spring-driven clock
Automobile
