WorksheetsGeneral Science Quiz
Total questions: 90
Worksheet time: 45mins
Which of the following may stimulate the growth of the roots in plant cuttings?
The use of auxins
A decrease in enzymes
A decrease in soil minerals
The use of endocrine secretions
Which of the following is the function of the cotyledon in a seed?
To form the lower portion of the plant
To form the upper portion of the plant
To protect the seed from drying out
To provide nutrients for the germinating plant
An embryo begins to develop from a zygote as a direct result of
Fermentation
Budding
Sporulation
Cleavage
Enzymes are proteins that catalyze a particular biochemical reaction involving specific substrate molecules. Enzyme activity is affected by pH, that is
pH has no effect on enzyme activity.
All enzymes work at any pH
Each enzyme works at different optimum level.
Enzymes work at a higher pH when the temperature is higher and at a lower pH when the temperature is lower.
Two different forms of the same gene and are located on homologous chromosomes.
Chromatids
Genes
Alleles
DNA
It is considered as the most primitive kingdom.
Fungi
Monera
Animals
Plants
The reason why gases diffuse faster than liquids is that gas molecules are
More free to move than liquid molecules.
Lighter than liquid molecules.
More comprehensible than liquid molecules.
More elastic than liquid molecules.
Smoke particles are examined under a microscope, and were observed to be moving randomly. This movement is due to
Air currents blowing on the smoke particles.
The force of attraction between the smoke particles.
Air molecules bumping into smoke particles.
Smoke particles reacting with oxygen in the air.
Solids do not diffuse like gases because the particles of a solid
Stationary.
Are too heavy to move.
Are too close to move.
Cannot move around each other.
A chemical reaction occurs when
Salt solution is heated.
Dilute hydrochloric acid is added to magnesium ribbon.
Crude oil is distilled.
An electric current passes through an electric wire.
It is the separation of a liquid into different substances with different boiling points.
Distillation
Filtration
Chromatography
Evaporation
Which of the following is a physical property of sugar?
Its composition is hydrogen, oxygen and carbon.
It can be decomposed with heat.
It is a white crystalline solid.
It turns black with concentrated H2SO4.
When water changes into steam, the molecules become
Separate atoms.
More widely spaced.
Much larger.
Less in mass.
When ice changes from a solid to a liquid at its melting point
Its temperature increases.
Heat is given out.
Its particles gain energy.
Its particles become more ordered.
Fine pollen grains in the surface of water are examined under a microscope. It is observed that the pollen grains are in random motion and frequently changing direction. The movement is most likely due to the
Movement of air across the water.
Chemical reaction between the pollen and the water.
Collisions between water molecules and pollen grains.
Attraction and repulsion between charged particles.
Alleles are genes which
Are linked to only one chromosome.
Occupy corresponding positions on homologous chromosomes.
Are sex-linked and are transmitted from fathers to their daughters.
Are always sex-linked and are transmitted from mother to their sons.
Phenotype may be defined as
Genetic makeup of an individual.
Hidden traits of an individual.
Visible expression of genotype.
Unrelated characteristics.
Different organisms have different numbers of chromosomes. Kangaroos have 12 chromosomes in each body cell. This means that the number of chromosomes in each egg cell of a kangaroo is
6
12
18
24
Which of the statements following is true?
DNA is made up of genes and contains chromosomes.
Chromosomes are made of DNA and contain genes.
Genes are made of DNA and contain chromosomes.
Genes are made of chromosomes and contain DNA.
All living things are made up of cells. Different cells and organs are adapted for their different roles in life processes. All living cells contain a nucleus, cytoplasm, and a cell membrane. In addition to these, plant cells also have a cell wall, chloroplasts and a vacuole. Which part of a cell contains the mitochondria?
Nucleus
Cytoplasm
Cell membrane
Cell wall
The part of a plant cell that stores water, sugar and minerals.
Nucleus
Vacuole
Chloroplast
Cell wall
Photosynthesis is the process of converting light energy and inorganic compounds to chemical energy and organic compounds. This is the way the plants make their own food. It happens mainly in the palisade cells of leaves, and is a complex chemical reaction requiring energy from light. Photosynthesis
uses up oxygen.
is not important to animals.
takes place only in darkness.
is essential to all life on earth.
Plants need carbon dioxide, water, light and chlorophyll in order to make starch by photosynthesis. Carbon dioxide enters plants through holes in the leaves called
Air spaces.
Stomata.
Cuticles.
Chloroplasts.
Our diet must include three types of food: energy foods, body-building foods and maintenance foods. The main energy foods are carbohydrates and
Fats
Proteins
Vitamins
Minerals
Vitamins help to control chemical reactions in our bodies. Without vitamins certain reactions cannot take place. We need only tiny amounts of vitamins, but without them we will suffer from deficiency diseases, like the lack of vitamin D will lead to
Beriberi
Rickets
Scurvy
Night blindness
The heart pumps blood around the body through a system of tubes called blood vessels. Which blood vessels carry blood back to the heart?
Arteries
Capillaries
Veins
Cartilage
What is the function of the white blood cells?
To carry nerve impulses to the brain
To produce hormones to clot the blood
To transport oxygen to the cells
To destroy bacteria in the body
What is the function of the excretory system?
To get rid of undigested food from the body
To remove harmful waste produced by the body
To take in oxygen and transport it to the cells
To control all the organs of the body
In a species of pea plant, white flowers were completely dominant over red flowers. Pure-breeding, white flowered pea plants are crossed with pure breeding, red-flowered pea plants. What proportion of white-and-red-colored plants will be produced in the F1 generation?
All white-flowered plants
A 3:1 ratio of white-flowered plants to red-flowered plants
All red-flowered plants
A 3:1 ratio of red-flowered plants to white-flowered plants
Of the following parts of a cell, which one is the smallest in size?
Amino acid
Chromosome
Gene
Nucleus
The most abundant substance in the protoplasm is _______.
Fat
Protein
Carbohydrate
Water
The site of the majority of photosynthesis in a leaf is the _____.
Spongy layer
Cuticle
Epidermis
Palisade layer
Which of the following statements is illustrated by the graph beside?
As the temperature is lowered, the rate of activity of enzymes decreases. As the temperature is raised, their activity increases, until a maximum is reached at about 40°C.
As the temperature is raised, the rate of activity of enzymes decreases. As the temperature is lowered, their activity increases until a maximum is reached at about 40°C.
As the temperature is lowered, the rate of activity of enzymes increases. As the temperature is raised, their activity decreases, until a maximum is reached at about 40°C.
The level of activity of enzymes remains constant even if temperature changes. Likewise, temperature remains constant even if the level of activity increases.
Muscle may be controlled or may work without conscious thought. The muscle type(s) considered involuntary is(are) ______.
Smooth
Skeletal
Skeletal and cardiac
Cardiac and smooth
Meiosis differs from mitosis in that ______.
Meiosis produces 4 daughter cells, while mitosis produces only 2 daughter cells.
The chromosome number remains the same in meiosis, but is halved during mitosis.
Meiosis produces identical daughter cells, but mitosis produces daughter cells that are genetically different.
Meiosis occurs in somatic cells, while mitosis occurs in sex cells.
A root may perform all of the following functions except ______.
Anchorage
Absorption of water
Photosynthesis
Storage
Which of the following is an example of a biotic factor that will determine which animals or plants inhabit an environment?
The acidity of a lake near a factory.
The high daytime temperatures and low nighttime temperature.
Berry plants growing in abundance at the edge of a forest.
The amount of oxygen present in the water of a pond.
Which of the following is the best description of the pyramid of energy?
The base of the pyramid consists of producers which supply the most energy.
The base of the pyramid consists of the highest consumers who need the most energy.
The top of the pyramid consists of the producers which supply the most energy.
The top of the pyramid consists of the highest consumers who need the most energy.
The breathing rate is increased by an increase in the content of ________.
Oxygen
Nitrogen
CO2
H2O (vapor)
That evolution has occurred is now generally accepted as a doctrine rather than a theory because
There is ample evidence that species have changed over the years.
Darwin received a posthumous Nobel Prize for his book on natural selection.
Uranium-lead studies have traced the history of the horse.
It is now certain that the earth is at least 4 billion years old.
Of the following terms, which one includes the others?
Class
Order
Phylum
Family
A protozoan causes the disease malaria in a human host. This relationship illustrates
Mutualism
Commensalism
Parasitism
Predation
Viruses are not considered free-living because
Their cells lack cytoplasm.
Their cells contain DNA.
They are too small to be seen by light microscopy.
They cannot reproduce outside a living cell.
Some organisms living in a garden include dragonflies, bugs, roses, grasshoppers, grasses, worms, and spiders. Collectively, these organisms represent a ________.
Biome
Community
Habitat
Population
Green algae are able to manufacture their own food because _______.
They live in water.
They attach themselves to plants.
They have chlorophyll.
They are the most immediate relatives of green plants.
All of the following are examples of a reflex except ________.
Sneezing
Blinking
Coughing
Reading
Which of the following is a disease caused by bacteria?
Polio
Smallpox
Rabies
Tetanus
The greenhouse effect is caused by the increase in the _____.
Number of greenhouses.
Amount of CO2 in the air.
Number of green plants worldwide.
Amount of O2 in the atmosphere.
In binomial nomenclature scheme, only ______ and ______ are used to name an organism.
Genus and Species
Class and Order
Kingdom and Phylum
Family and Genus
Any biological agent that causes disease is called _____.
Host
Bacteria
Pathogen
Which bacteria is globular-shaped?
Bacillus
Coccus
Spirochetes
Water is transported from the roots to the leaves by _____.
Phloem
Xylem
Sieve tubes
It refers to the arrangement of the veins in the leaf.
Venation
Coloration
Separation
Adaptation
Trees that lose all their leaves at the end of a growing season in temperate regions are called _____.
Savannah
Tundra
Coniferous
Deciduous
The growth of plants toward light is called
Hydrotropism
Geotropism
Phototropism
Fluke: Class Trematoda:: Tapeworm: Class _____.
Cestoda
Nematoda
Annelida
The process of shedding exoskeleton is called ______.
Melting
Chitin
Molting
Metamorphosis
_______ is a term used to describe methods of introducing new genes into an organism.
Genetic eng’g
Recombinant DNA
Hybridization
Genetics
_______ is the process of bone formation.
Oogenesis
Ossification
Peristalsis
An excretory organ that filters the waste from the blood.
Kidney
Liver
Stomach
Intestine
The cells of the heart is nourished by the
Carotid artery
coronary artery
jugular vein
renal vein
pulmonary arteries
The liquid that bathes all the cells of the body is called
Fibrinogen
lymph
plasma
blood
fibrin
All of the following are found in the plasma EXCEPT
Fibrinogen
antibodies
hormones
starch
amino acid
Oxygen is carried in the
Phagocytes
platelets
white blood cells
red blood cells
gammaglobulin
An inherited disease in which the blood does not clot is
Thrombosis
atherosclerosis
hemophilia
heparin
anemia
Urea is removed from the blood by the
kidneys
liver
Lungs
spleen
bladder
The dermis of the skin contains all of the following EXCEPT
Layer of dead cells
blood vessels
hair follicles
oil glands
Hormones are distributed throughout the body by
ducts
ductless glands
blood
nerve endings
A gland that is known as the gland of emergency is the
Pituitary gland
adrenal
thyroid
nerves
connective tissue
A bridge between neurons is called
Dendrite
terminal brush
end brush
A uniting cells in sexual reproduction are called
Zygotes
zygospores
spores
buds
gametes
A zygote is a cell that
Results from the union of two gametes
Unites with another zygote to form a gamete
United with another zygote to form a zygospore
Results from the union of two zygospores
The transfer of pollen from the stamen to the stigma of the same flower is known as
Cross pollination
self pollination
fertilization
Germination
seed dispersal
The proper sequence of embryonic development is (1-gastrula; 2-zygote; 3-egg; 4-blastula, 5-two-celled stage)
52341
35241
32415
32541
32514
The egg-producing structure of an animal is called
Oviduct
ovum
ovary
ovule
ovipositor
The development of the egg without being fertilized by the sperm is known
Parthenogenesis
metamorphosis
regeneration
differentiation
Fraternal twins
Are always of the same sex
Maybe of the opposite sex
From the mother’s small intestine
Through the micropyle
The release of an egg from a follicle is called
Fertilization
metamorphosis
ovulation
Cleavage
osmosis
The rod-like structures that appear during nuclear division are known as
Spindle fibers
nucleoid
chromosome
Asters
centrosome
Polar bodies are formed during
Phototropism
spermatogenesis
oogenesis
prophase stage
Bacteria may be attacked by a virus called
Cocci
bacilli
spiral
bacteriophage
staphylococcus
A class of vascular plants that reproduce by means of spores
Ferns
gymnosperms
angiosperms
bryophytes
This is a phylum or group of invertebrates best characterized by their flat-bodied. Examples are planaria and tapeworm.
Cnidarian
Platyhelminthes
annelida
nematode
rotifer
Photosynthesis: chloroplast:: Respiration:_____________
Mitochondria
lysosome
golgi
nucleus
Endoplasmic reticulum
Which of the following is true about red tide?
It is caused by a dinoflagellate called Pyrodimium bahamense var. compressum.
People should refrain from eating shellfish during red tide occurrences.
Sudden increase in the nutrient content of the water may trigger red tide outbreaks.
All of the above.
Which of the following statements is not true about acid rain?
It is caused by increasing amounts of oxides of sulfur and nitrogen in the atmosphere.
It contributes to the thinning of the ozone layer.
It corrodes marble and metallic structures.
It damages crops by increasing soil acidity.
Which of the following does NOT describe the Cell Theory?
Cells are the units of structure and function.
New cells come from the division of pre-existing cells.
Most living things are made up of cells.
Cells are the building blocks of life.
Which of the following is NOT true about Ribonucleic Acid (RNA)?
It is single-stranded.
Its bases are adenine, guanine, thymine, and cytosine.
It has a 5-C sugar called ribose.
It is needed for protein synthesis.
Whether a child is a boy or a girl depends on the:
Type of sperm cell
Type of egg cell
Time of ovulation
Time of fertilization
Essential amino acids can be obtained from
Plant sources
animal sources
both A and B
Neither A nor B.
