WorksheetsFC 3 and 4
Total questions: 110
Worksheet time: 55mins
Which pathogen and disease is mismatched?
Gonyaulax — red tide
Entamoeba — dysentery
Giardia — beaver fever
Trypanosoma — malaria
Which pigment is dominant in red algae?
Flavonoid
Hydrator
Chlorophylls
Phycoerythrin
Which of the following method creates pores in the
membrane?
Gene gun
Chemical transformation
Electroporation
Agrobacterium
Which of the following is NOT true of agrobacterium?
Horizontal gene transfer
Gram positive bacteria
Causes tumor in plants
Transfer DNA in plants
Gram-positive bacteria have:
Thick peptidoglycan wall
Thin peptidoglycan wall with outer membrane
Gram-negative bacteria have:
Teichoic acids in their cell wall
Outer membrane containing lipopolysaccharides
(LPS)
Example of Gram-positive bacteria:
Staphylococcus aureus
Escherichia coli
Example of Gram-negative bacteria:
Bacillus anthracis
Salmonella typhi
Bacteria reproduce mainly by:
Binary fission
Mitosis
Bacteria without a cell wall (resistant
to penicillin):
Mycoplasma
Clostridium
Spiral-shaped bacteria are called:
Cocci
Spirilla
Endospore-forming bacteria include:
Bacillus and Clostridium
Vibrio and Neisseria
The growth of plant tissues in artificial media is called
________.
Gene expression
Transgenesis
Plant tissue culture
Cell hybridization
Which of the following is NOT the feature of plant cells?
Presence of centrioles
The cell wall outside the cell membrane
Cell-cell communication through plasmodesmata
Consists of plastids
Who first described “cells” in cork
(plant tissue)?
Robert Hooke
Anton van Leeuwenhoek
Who observed “animalcules” (living
animal cells, bacteria)?
Schleiden
Leeuwenhoek
Cell wall present in:
Plant cells
Animal cells
Centrioles present in:
Plant cells
Animal cells
Large central vacuole common in:
Plant cells
Animal cells
Lysosomes are more prominent in:
Plant cells
Animal cells
Store carbohydrates mainly as
glycogen:
Plant cells
Animal cells
Matthias Schleiden (1838) stated:
All plants are made of cells
All animals are made of cells
Golgi apparatus (discovered by
Camillo Golgi) is found in:
Only plants
Both plants and animals
Which of the following is the main effect of cytokines in the
tissue culture system?
Adventitious shoot formation
Induction of somatic embryos
Adventitious root formation
Shoot elongation
Auxins mainly cause:
Cell elongation
Seed dormancy
The first discovered plant hormone,
auxin, was studied by:
Charles Darwin
Robert Hooke
Gibberellins were discovered from a fungus
causing “foolish seedling disease” in rice.
They promote:
Stem elongation
Leaf fall
Abscisic acid (ABA) is mainly known for:
Growth stimulation
Stress and dormancy
Which hormone is sprayed commercially
to ripen bananas and mangoes faster?
Ethylene
Gibberellin
Ethylene gas promotes:
Fruit ripening
Seed germination
Which of the following is responsible for B-cell activation?
Infection
Antibody
Antigen
Allergy
Which matures in the thymus?
B cell
T cell
Which produces antibodies?
B cell
T cell
Which provides humoral immunity?
B cell
T cell
Which provides cell-mediated immunity?
B cell
T cell
The main function of RNA is
Carbohydrate synthesis
Lipid synthesis
Protein synthesis
No specific function
The “powerhouse of the cell” phrase was
popularized after discovery of which process
inside mitochondria?
Calvin cycle
Oxidative phosphorylation
Which organelle contains hydrolytic enzymes
and is responsible for intracellular digestion?
Peroxisome
Lysosome
Ribosomes are made of:
DNA + proteins
rRNA + proteins
The rough endoplasmic reticulum is
“rough” because:
It has ribosomes attached
It stores calcium
In plant cells, photosynthesis occurs in
chloroplasts. The light-dependent reactions
take place in:
Stroma
Thylakoid membranes
Which scientist gave the statement “Omnis
cellula e cellula” (all cells come from pre
existing cells)?
Rudolf Virchow
Theodor Schwann
Which cytoskeletal element is responsible
for cilia and flagella movement?
Microtubules
Microfilaments
In animal cells, centrosomes play a key
role in:
Protein synthesis
Spindle formation during cell division
Prokaryotes have membrane-bound organelles.
True
False
Peroxisomes break down fatty acids and detoxify
hydrogen peroxide.
True
False
The nucleolus is the site of ribosome assembly.
True
False
Chloroplasts and mitochondria are semiautonomous
because they have their own DNA and ribosomes.
True
False
Rough ER: Protein synthesis (ribosomes attached)
Smooth ER: Lipid synthesis, detoxification, calcium storage
True
False
An example of a Hesperidium is
Banana
Guava
Citrus
Grape
Which of these is not an antibiotic?
Penicillin
Amoxicillin
Terramycin
Paracetamol
Mycoses are diseases caused by
Fungi
Mycobacteria
Algae
Cyanobacteria
Which one of the following is NOT a correct pair in relation to
function?
Golgi complex- breakdown of complex molecules
Mitochondria- production of energy
Chromosomes- Vehicles of heredity
Chloroplast- Hill reaction
Which cell type is best for studying lysosomes?
Leaf cell
Nerve cell
Muscle cell
White blood cell
Which best describes meiosis?
Nuclear changes repeat indefinitely
New cells have double chromosome number
Nucleoli split and disappear
New cells have half chromosome number
Mitosis results in:
Two identical diploid cells
Four genetically different haploid cells
Meiosis is essential for:
Growth and repair
Formation of gametes
Crossing over (exchange of genetic
material) occurs in:
Prophase I of meiosis
Prophase of mitosis
Which scientist first observed cell division
under the microscope?
Walther Flemming
Rudolf Virchow
At the end of meiosis II, each cell has:
Same chromosome number as parent cell
Half the chromosome number of parent cell
Mitosis occurs only in somatic (body) cells.
True
False
In mitosis, homologous chromosomes pair and
recombine.
True
False
Meiosis contributes to genetic variation through
independent assortment and crossing over.
True
False
What happens when a red blood cell is placed in distilled
water?
Plasmolysis
No change
Shrinks
Swells
A plant cell in a hypertonic solution
becomes:
Turgid
Plasmolyzed
In an isotonic solution, an animal cell:
Maintains normal shape
Swells and bursts
In a hypotonic solution, water enters the cell.
True
False
Which of these is NOT a fruit?
Carrot
Cucumber
Ampalaya
Squash
Chlorophyll appears green because green light is:
Dispersed
Absorbed
Refracted
Reflected
Which gas is essential for seed germination?
Nitrogen
Carbon dioxide
Hydrogen
Oxygen
Which pairing is incorrect?
Cnidaria - Corals
Porifera - Sponges
Annelida - Earthworm
Platyhelminthes – Ascaris
In science education, which type of learning most aligns with
Piaget’s theory of cognitive development?
Memorization
Discovery learning
Repetitive learning
Didactic instruction
Which principle justifies the use of real-world problems in
science classrooms?
Abstraction
Relevance
Conformity
Isolation
What is the main focus of a spiral science curriculum?
Teaching concepts in isolation
Rote memorization
Revisiting topics with increasing complexity
Strict chronological order for organization
In curriculum mapping, which is the most important to
ensure vertical alignment?
Matching lesson plans
Sequencing content across grade levels
Focusing on a single topic
Using the same textbooks
Which model of curriculum development advocates for clear
learning outcomes before content and assessment design?
Tyler’s Model
Taba’s Model
Wheeler’s Model
Backward Design
Which statement is most consistent with a learner-centered
science curriculum?
Content coverage is prioritized over skill development
Student interests and experiences shape learning activities
Assessment focuses on factual recall
Rigid pacing guides must be followed
Which is the most effective strategy for minimizing chemical
exposure during laboratory work?
Storing chemicals in the classroom
Limiting food and drinks in the lab
Mixing chemicals before class
Use of fume hoods and PPE
Which safety device is most crucial for responding to a
student's clothing catching fire in the laboratory?
Fire blanket
First aid kit
Eye wash station
Chemical fume hood
What is the primary purpose of maintaining a laboratory inventory
log?
To record students’ attendance and list those who use the chemicals
To assess students’ performance in handling laboratory equipment
To prepare lesson plans for the day-to-day experiment
To track chemical usage and ensure safe storage
In risk management, what should a science teacher
prioritize before a lab session?
Grading after the lab
Scheduling a field trip
Reviewing safety data sheets
Collecting student fees
In inquiry-based learning, what is the teacher’s most
important role?
Direct instruction provider
Knowledge transmitter
Initiator of student investigations
The teacher is the sole source of answers
What is a hallmark of authentic assessment in inquiry-based
science classrooms?
Multiple-choice tests
Real-world problem-solving tasks
Standardized testing with certain criterion
Memorization of facts or recall of information
Which constructivist strategy is best exemplified by students
designing their own experiments?
Repetition
Didactic lecture
Guided inquiry
Closed-ended questioning
Which assessment method best evaluates higher-order
thinking skills in science?
True/false tests
Matching type tests
Fill-in-the-blank quizzes
Practical performance tasks
Which research method is most appropriate for studying the
impact of inquiry-based instruction on student achievement?
Historical analysis
Experimental design
Narrative analysis
Philosophical reflection
Which mathematician made significant contributions to
both algebra and astronomy, and was the first woman to earn a
doctorate in mathematics in Germany?
Jane Goodall
Hypatia of Alexandria
Sofia Kovalevskaya
Mary Somerville
Who provided the first experimental proof of neutrinos, as
predicted by Pauli and Fermi?
Frederick Reines and Clyde Cowan
James Watson and Francis Crick
Ada Lovelace and Charles Babbage
Marie Curie and Pierre Curie
Who discovered the neutron, thereby paving the way for
nuclear fission research?
James Chadwick
Ernest Rutherford
Enrico Fermi
J. J. Thomson
Electrons are found in specific regions
around the nucleus called:
Orbitals
Orbits
The orbital shape described by the
quantum number l = 1 is:
p-orbital
d-orbital
The isotope of hydrogen with 1 proton and
2 neutrons is:
Deuterium
Tritium
Which subatomic particle determines the
chemical identity of an atom?
Proton
Neutron
An atom with more electrons than protons
is called a:
Cation
Anion
The scientist who proposed the planetary
model of the atom was:
Niels Bohr
J.J. Thomson
The principle stating that electrons occupy
the lowest energy orbitals first is:
Pauli Exclusion Principle
Aufbau Principle
The particle responsible for holding
protons together in the nucleus is the:
Strong nuclear force
Electromagnetic force
The “Pauli Exclusion Principle,” which underpins much of
quantum physics and chemistry, states that:
No two photons can occupy the same quantum state
No two fermions can occupy the same quantum state
No two electrons can have the same orbital
All bosons must have unique energy levels
Which scientist’s work on cosmic microwave background
radiation provided the first strong observational evidence for the
Big Bang theory?
Edwin Hubble and Georges Lemaître
Linus Pauling and William Herschel
Arno Penzias and Robert Wilson
Edmond Halley and Charles Messier
Which of the following is a fluid matrix for nutrient and waste
transport, hormone carrier, and liquid portion of the blood?
Plasma
WBC
RBC
Thrombocytes
The hormone cortisol is produced by the:
Thyroid gland
Adrenal gland
Pituitary gland
Pancreas
The process of building and storing complex molecules from
simpler ones. It's also known as constructive metabolism
Anabolism
Catabolism
Homeostasis
Metabolism
Which cells in the blood do not have a nucleus?
Erythrocyte
Lymphocyte
Monocyte
Basophil
To ensure adequate tissue oxygenation, a sufficient level of
this substance must be maintained. It is an iron-rich protein in
red blood cells.
Myoglobin
Hemoglobin
Cytochrome
Albumin
Which part of the brain is involved in regulating heart rate,
breathing, and blood pressure?
Hypothalamus
Pons
Medulla oblongata
Hippocampus
Which of the following are most directly involved in chemical
bonding?
protons
neutrons
alpha particles
valence electrons
What component of hard water makes it “hard”?
sodium and nitrogen
oxygen and hydrogen
large amounts of sodium and carbon dioxide
large amounts of calcium and magnesium ions
As determined experimentally by Italian scientist Amedeo
Avogadro, one mole or any substance represents _____
particles.
2.06 x 10^23
6.02 x 10^26
6.02 x 10^23
2.60 x 10^23
Which of the following situations is true as a boat moves
from salty sea to freshwater river?
It sinks deeper
It floats higher
It stays at the same level
It moves faster
Thinking, memory, voluntary movements, sensory processing
Cerebrum
Midbrain
Pons
Medulla Oblongata
