1.
Which of the following is heterogeneous?
Correct Answer
C. Sea water
Explanation
Sea water is considered heterogeneous because it is a mixture of various substances such as salt, minerals, and organic matter. These components are not uniformly distributed throughout the water, resulting in a non-uniform appearance and composition. In contrast, rainwater and clean air are considered homogeneous because they consist of only one substance (water and gases, respectively) and have a uniform composition throughout. Kerosene is also a homogeneous substance as it consists of only one type of molecule.
2.
Eight out of the top ten leading causes of morbidity in the Philippines are communicable. To prevent from happening to your students the best advice you can give them is to _________.
Correct Answer
D. ​​​​​​​Wash hands frequently
Explanation
The correct answer is "Wash hands frequently." This is because communicable diseases are often spread through contact with contaminated surfaces or through direct contact with infected individuals. By washing hands frequently, students can reduce the risk of transferring germs from their hands to their mouths or other parts of their bodies, thus preventing the spread of communicable diseases.
3.
Iron-deficiency contributes to the poor scholastic performance of students. Which of the following food items is best for Iron-deficient students?
Correct Answer
D. Liver
Explanation
Liver is the best food item for iron-deficient students because it is a rich source of iron. Iron is essential for the production of hemoglobin, which carries oxygen to the brain and other parts of the body. Iron deficiency can lead to fatigue, poor concentration, and decreased cognitive function, all of which can negatively impact scholastic performance. Therefore, consuming liver, which is high in iron, can help improve iron levels and subsequently enhance academic performance.
4.
The interaction between living organisms and nonliving elements in the environment is called a/an ____________
Correct Answer
D. Ecosystem
Explanation
An ecosystem refers to the interaction between living organisms and nonliving elements in the environment. It encompasses the relationships and exchanges of energy and nutrients between all the different organisms and their physical surroundings. This includes the interactions between plants, animals, microorganisms, water, air, soil, and other abiotic factors. An ecosystem is a complex and interconnected system where all the components rely on each other for survival and balance.
5.
Which of the following best differentiated an earthquake’s intensity from its magnitude?
Correct Answer
D. Intensity is a measure of how much damage an earthquake caused at the surface while magnitude is the strength of the quake.
Explanation
The explanation for the correct answer is that intensity refers to the amount of damage caused by an earthquake at the surface, while magnitude refers to the strength or energy of the earthquake. Intensity is measured based on the effects of the earthquake on buildings, infrastructure, and human activities, while magnitude is measured using a seismograph to determine the seismic energy released by the earthquake. In summary, intensity describes the impact of the earthquake, while magnitude describes the power of the earthquake.
6.
What is the type response exhibited by the roots of plants?
Correct Answer
B. ​​​​​​​Positive geotropism
Explanation
Positive geotropism is the type of response exhibited by the roots of plants. Geotropism refers to the growth or movement of an organism in response to gravity. In the case of roots, they exhibit positive geotropism by growing downwards, towards the direction of gravity. This helps the roots to anchor the plant in the soil and absorb water and nutrients from it.
7.
All of the following problems may arise in the use of sanitary landfill, except:
Correct Answer
A. Production of methane gas and possible explosion
Explanation
The correct answer is "Production of methane gas and possible explosion". Sanitary landfills are designed to manage and control the production of methane gas, which is a byproduct of the decomposition of organic waste. The landfill gas is typically collected and used as a source of energy. While the other options mention potential issues with sanitary landfills such as refusal of residents, flash floods, degradation of soil, and pollution of surrounding soil, the production of methane gas and possible explosion is not a problem typically associated with the use of sanitary landfills.
8.
Patients suffering from malfunction of the kidney are now assisted by machine that serves as artificial kidney called ____________.
Correct Answer
D. Hemodializer
Explanation
Patients suffering from malfunction of the kidney are now assisted by a machine called a hemodializer, which serves as an artificial kidney. This machine helps filter waste products and excess fluid from the blood, performing the function that the kidney would normally do. The other options listed, such as hemeostatic machine, pacemaker, and hemoscope, do not have a direct association with kidney malfunction or the process of filtering blood.
9.
Why do we hear thunder some seconds after seeing lightning?
Correct Answer
B. Light travels faster than sound
Explanation
When lightning occurs, it produces both light and sound. However, light travels at a much faster speed than sound. Therefore, we see the lightning immediately because light reaches our eyes almost instantly, while the sound takes some time to travel to our ears. This delay in the arrival of sound is why we hear thunder a few seconds after seeing the lightning.
10.
Meteorology is a very important branch of natural science, without which we cannot be informed of forthcoming ____________.
Correct Answer
B. Tropical cyclone
Explanation
Meteorology is the study of the Earth's atmosphere and weather patterns. By understanding meteorology, we can gather information about various weather phenomena, including tropical cyclones. These powerful storms can cause significant damage and loss of life if not properly predicted and prepared for. Therefore, meteorology plays a crucial role in informing us about the occurrence and potential impacts of tropical cyclones, allowing us to take necessary precautions and mitigate their effects.
11.
Wastes from the kitchen are considered useful if properly separated. How are they classified?
Correct Answer
B. Biodegrable
Explanation
Kitchen wastes are classified as biodegradable because they can be broken down naturally by microorganisms and decomposed into organic matter. This includes food scraps, vegetable peels, and other organic materials that can be composted or used for producing biogas through anaerobic digestion. Proper separation of kitchen wastes ensures that they can be effectively recycled or reused, reducing the environmental impact and promoting sustainability.
12.
To lessen vehicular air pollution, the government should?
Correct Answer
D. Ban smoke-belchers on the roads.
Explanation
Banning smoke-belchers on the roads would be an effective measure to reduce vehicular air pollution. Smoke-belchers are vehicles that emit excessive amounts of smoke and pollutants into the air, contributing to air pollution. By implementing a ban on these vehicles, the government can ensure that only vehicles that meet certain emission standards are allowed on the roads, thereby reducing the overall pollution levels. This measure would help in improving air quality and promoting a healthier environment.
13.
Developing mines require getting a DENR clearance. Which of the following clearances are required?
Correct Answer
B. Environmental clearance
Explanation
Developing mines require obtaining an environmental clearance. This clearance is necessary to ensure that the mining activities do not harm the environment and comply with the regulations set by the Department of Environment and Natural Resources (DENR). It involves assessing the potential environmental impacts of the mining project and implementing measures to mitigate any negative effects. The environmental clearance is a crucial step in the process of obtaining permission to operate a mine and is aimed at protecting the environment and promoting sustainable mining practices.
14.
The latest discovery in biological science as applied to animal industry, is most widely used in?
Correct Answer
B. Artificial breeding
Explanation
Artificial breeding is the most widely used application of the latest discovery in biological science in the animal industry. This technique involves manipulating the reproductive process of animals to achieve desired traits or outcomes. It allows for selective breeding, genetic improvement, and increased production efficiency. Artificial breeding techniques include artificial insemination, embryo transfer, and in vitro fertilization. These methods have revolutionized the animal industry by enabling farmers and breeders to enhance the quality of livestock, increase productivity, and preserve valuable genetic material.
15.
Agricultural centers have found lately varieties of coconut propagation. Through what means were the coconut varieties get discovered and distributed?
Correct Answer
D. Putting up plant nurseries
Explanation
Plant nurseries have played a significant role in the discovery and distribution of coconut varieties. By setting up plant nurseries, agricultural centers are able to grow and cultivate different types of coconuts, allowing for the identification and propagation of new varieties. These nurseries provide a controlled environment for the growth of coconut plants, enabling researchers and scientists to study and evaluate the characteristics and qualities of different coconut varieties. Once identified, these varieties can then be distributed to farmers and other agricultural centers for cultivation and further research.
16.
Acid rain causes fish kills, destroy buildings, dissolve river nutrients, etc. which of the following causes acid rain?
Correct Answer
C. Burning fossil fuels
Explanation
Burning fossil fuels is the correct answer because the combustion of fossil fuels releases sulfur dioxide and nitrogen oxides into the atmosphere. These pollutants react with water, oxygen, and other chemicals in the air to form sulfuric acid and nitric acid, which then fall to the ground as acid rain. Forest fires, use of chlorofluorocarbons (CFCs), and vehicle emissions can contribute to air pollution, but they are not the primary cause of acid rain.
17.
Is the relationship between an organism and a host where neither benefited nor harmed.
Correct Answer
A. Commensalism
Explanation
Commensalism is the correct answer because it describes a relationship between an organism and a host where one organism benefits while the other is neither benefited nor harmed. In commensalism, the organism that benefits is called the commensal, while the host is unaffected. This type of relationship is characterized by one-sided benefits, where the commensal benefits from resources or protection provided by the host, while the host is not affected positively or negatively.
18.
The main energy source of a plant-eating animal.
Correct Answer
A. Glucose
Explanation
Glucose is the correct answer because it is the main energy source for plant-eating animals. Glucose is a simple sugar that is produced during photosynthesis in plants and is then consumed by herbivores. It is easily broken down and converted into energy through cellular respiration, providing the necessary fuel for the animal's metabolic processes. Starch, cellulose, and glycogen are also carbohydrates, but they are not the primary energy source for plant-eating animals.
19.
Which of the following is a vitamin?
Correct Answer
A. Niacin
Explanation
Niacin is a vitamin because it is an essential nutrient that the body needs in small amounts for proper functioning. It is also known as vitamin B3 and is involved in various metabolic processes, such as converting food into energy, maintaining healthy skin, and supporting the nervous system. Niacin can be obtained from a variety of food sources, including meat, fish, poultry, whole grains, and legumes.
20.
Which element has Ca as its symbol?
Correct Answer
D. Calcium
Explanation
Calcium is the element that has Ca as its symbol. The symbols used to represent elements are derived from their Latin names, and in this case, "Ca" comes from the Latin word for calcium, "calx." Cadmium is represented by the symbol "Cd," Californium by "Cf," and Carbon by "C." Therefore, the correct answer is Calcium.
21.
Besides solid, liquid, gas, what is the fourth form of matter?
Correct Answer
A. Plasma
Explanation
Plasma is considered the fourth state of matter because it is a highly ionized gas that consists of charged particles. Unlike solids, liquids, and gases, plasma does not have a definite shape or volume. It is formed when a gas is heated to extremely high temperatures or subjected to strong electromagnetic fields, causing the atoms to lose their electrons and become ionized. Plasma is commonly found in stars, lightning, and fluorescent lights. It is also used in various industrial applications, such as plasma cutting and plasma TVs.
22.
What is the term for the slowing-down response by the frog’s circulatory during the cold season?
Correct Answer
C. Hibernation
Explanation
Hibernation is the term for the slowing-down response by the frog's circulatory system during the cold season. Hibernation is a state of inactivity and reduced metabolic rate that allows animals to conserve energy and survive in harsh conditions. During hibernation, the frog's heart rate, breathing, and overall activity decrease significantly to cope with the cold temperatures. This adaptation helps the frog to conserve energy and survive until warmer conditions return.
23.
Iron is what type of magnetic material?
Correct Answer
B. Ferromagnetic
Explanation
Iron is classified as a ferromagnetic material because it exhibits strong magnetic properties. Ferromagnetic materials have the ability to become permanently magnetized when exposed to a magnetic field. Iron is one of the most commonly known ferromagnetic materials and is widely used in various applications such as electromagnets and transformers.
24.
You won the jackpot prize in the lottery. The prize money cannot be paid in currency but in gold. Applying your knowledge in chemistry, select the largest amount of gold from the choices below (Au=197)
Correct Answer
B. 40 kg of gold
Explanation
The correct answer is 40 kg of gold. This is the largest amount of gold among the given choices. The other options, such as 297 g of gold, Avogadro's number of atoms gold, and 22.4 moles of gold, are all smaller quantities.
25.
Which law of force and motion explains this occurrence: when a rocket is propelled upward by the downward discharge of exhaust gasses?
Correct Answer
D. Interaction
Explanation
The occurrence of a rocket being propelled upward by the downward discharge of exhaust gasses can be explained by the law of interaction. According to Newton's third law of motion, for every action, there is an equal and opposite reaction. In this case, the action is the discharge of exhaust gasses downward, and the reaction is the rocket being propelled upward. The force exerted by the gasses in the downward direction creates an equal and opposite force on the rocket, causing it to move upward.
26.
Trace the conversion of energy that occurs when plants manufacture food.
Correct Answer
A. Radiant energy to chemical energy
Explanation
Plants convert radiant energy, typically in the form of sunlight, into chemical energy through the process of photosynthesis. During photosynthesis, plants use the energy from sunlight to convert carbon dioxide and water into glucose and oxygen. Glucose is a type of chemical energy that plants can store and use for various metabolic processes. Therefore, the conversion of radiant energy to chemical energy accurately describes the energy transformation that occurs when plants manufacture food.
27.
Two people pull on a rope in a tug-of-war, each pull with a 400 N force. What is the tension in the rope?
Correct Answer
C. 400 N
Explanation
When two people pull on a rope in a tug-of-war, the tension in the rope is equal to the sum of the forces applied by each person. In this case, both people are pulling with a force of 400 N each. Therefore, the total tension in the rope is 400 N.
28.
You noticed that big industries have tower-like tall stacks. What is the structure for?
Correct Answer
A. ​​​​​​​To control emission of hazardous gases
Explanation
Big industries have tower-like tall stacks in order to control the emission of hazardous gases. These stacks, also known as chimneys or smokestacks, are designed to release the harmful gases produced during industrial processes at a high altitude. By releasing the gases at a higher level, the dispersion and dilution of the pollutants are increased, reducing the impact on the surrounding environment and minimizing the potential harm to human health. This is an important measure to mitigate air pollution and ensure the industry's compliance with environmental regulations.
29.
How mat the establishment of housing subdivisions to address housing problem contribute to decreased food production?
Correct Answer
B. Arable lands are reduced for these are converted into housing subdivisions.
Explanation
The establishment of housing subdivisions contributes to decreased food production because arable lands are converted into these subdivisions. This means that the land that was previously used for farming and food production is now used for housing, reducing the available land for agriculture. As a result, there is less space for farming and crops, leading to a decrease in food production.
30.
Endangered species which are threatened due to ________
Correct Answer
A. Habitat destruction
Explanation
Habitat destruction is a major threat to endangered species. When their natural habitats are destroyed or altered, it disrupts their ability to find food, shelter, and mates, ultimately leading to population decline and extinction. This can occur due to various human activities such as deforestation, urbanization, pollution, and climate change. Habitat destruction is a significant concern as it directly impacts the survival and biodiversity of species, making it crucial to address and mitigate the factors contributing to it in order to protect endangered species and their ecosystems.
31.
Which of the following are expected effects of DDT on the health of the people living in the town?
I. Severe kidney damage
II. Diabetes mellitus
III. Breast cancer
Correct Answer
A. I, II and III
Explanation
DDT is a harmful chemical that can have various negative effects on human health. Severe kidney damage is a known effect of DDT exposure, as it can cause damage to the kidneys and impair their function. Diabetes mellitus is also associated with DDT exposure, as studies have shown a link between DDT exposure and an increased risk of developing diabetes. Additionally, DDT has been classified as a possible carcinogen, and there is evidence suggesting a potential link between DDT exposure and the development of breast cancer. Therefore, all three options (I, II, and III) are expected effects of DDT on the health of the people living in the town.
32.
Which of the following is the primary concern of marriage?
Correct Answer
A. The mutual production and security of man and woman
Explanation
The primary concern of marriage is the mutual production and security of man and woman. This means that marriage is primarily focused on the ability of a couple to work together and support each other in various aspects of life, such as financial stability, emotional well-being, and physical safety. This understanding of marriage emphasizes the partnership and cooperation between spouses in order to create a stable and secure environment for both individuals.
33.
What is a characteristics of a progressive tax system?
Correct Answer
A. The tax is greater for higher incomes
Explanation
A progressive tax system means that the tax rate increases as the income level increases. This means that people with higher incomes will pay a greater amount of tax compared to those with lower incomes. This system is designed to redistribute wealth and reduce income inequality by placing a larger burden on the wealthy individuals.
34.
With the arrival of the conquistadores, Philippine society was predominantly ________.
Correct Answer
A. Feudalistic
Explanation
The correct answer is "Feudalistic." This suggests that prior to the arrival of the conquistadores, Philippine society was characterized by a feudal system. Feudalism is a social and economic system in which land is owned by a small group of wealthy elites who grant land and protection to lower-ranking individuals in exchange for their labor and loyalty. This system was prevalent in many societies during the medieval period, and it implies a hierarchical structure with limited social mobility and a concentration of power among the ruling class.
35.
In connection with government transactions involving public interest, which policy is adopted in the Constitution to assure the public of accountability and transparency?
Correct Answer
A. Full public disclosure
Explanation
The policy of full public disclosure is adopted in the Constitution to assure the public of accountability and transparency in government transactions involving public interest. This means that the government is required to provide complete and accurate information to the public regarding its actions, decisions, and financial transactions. This policy aims to promote transparency, prevent corruption, and enable citizens to hold the government accountable for its actions. It ensures that the public has access to information that is necessary for them to make informed decisions and participate in the democratic process.
36.
The apex of the 19th Century pyramidal structure was occupied by the Spanish EXCEPT the _______.
Correct Answer
D. Indios
Explanation
During the 19th Century, the apex of the pyramidal structure in Spanish society was occupied by different groups. The Peninsulares, who were Spanish-born individuals, held the highest positions of power and authority. Officials, who were appointed by the Spanish government, also occupied influential positions. Friars, who were members of religious orders, played a significant role in the Spanish colonial administration. However, the Indios, who were indigenous people, were not part of the Spanish ruling elite and did not occupy the apex of the social structure.
37.
They were the small middle class EXCEPT the _________.
Correct Answer
D. Peninsulares
Explanation
The given question is asking for the exception among the small middle class. The term "Peninsulares" refers to people who were born in Spain but residing in the colonies. Therefore, the correct answer is "Peninsulares" because they were not part of the small middle class, as they were typically part of the upper class in the colonial society.
38.
This body helped the Spanish monarchs managaed the affairs of the colonies through a centralized machinery.
Correct Answer
A. Ministro de Ultramar
Explanation
The correct answer is "Ministro de Ultramar." This term refers to the minister responsible for overseeing colonial affairs in the Spanish colonies. The minister acted as the head of the centralized machinery that managed the affairs of the colonies on behalf of the Spanish monarchs. This position was crucial in maintaining control and ensuring efficient governance in the colonies.
39.
An appointed official of the Spanish monarch who headed the central administration in Manila.
Correct Answer
B. Governor General
Explanation
The Governor General was an appointed official of the Spanish monarch who headed the central administration in Manila. This position held significant power and authority over the Spanish colonial government in the Philippines. The Governor General acted as the highest-ranking representative of the Spanish crown and was responsible for overseeing various aspects of governance, including military affairs, justice, finance, and trade. They played a crucial role in implementing Spanish policies and maintaining control over the colony.
40.
Rizal’s great-great-grandfather was
Correct Answer
B. Domingo Lamco
Explanation
The correct answer is Domingo Lamco. Domingo Lamco is Rizal's great-great-grandfather.
41.
Francisco Mercado’s wife, Bernarda Monicha, was a
Correct Answer
A. Chinese Mestiza
Explanation
Francisco Mercado's wife, Bernarda Monicha, being described as a "Chinese Mestiza" indicates that she had mixed Chinese and Filipino heritage. This suggests that she had Chinese ancestry, but was born and raised in the Philippines and likely had a mixed cultural background. The term "Mestiza" is commonly used in the Philippines to describe individuals of mixed Filipino and foreign ancestry. Therefore, the answer "Chinese Mestiza" accurately reflects Bernarda Monicha's ethnic and cultural background based on the given information.
42.
The age of Francisco Mercado when Rizal was born
Correct Answer
B. 43 years old
Explanation
Francisco Mercado was 43 years old when Rizal was born. This suggests that Francisco was relatively older when Rizal was born, which may have influenced their relationship and the dynamics within their family. It is common for parents who have children later in life to have a different parenting style and perspective compared to younger parents. This age difference may have shaped Rizal's upbringing and had an impact on his own development and worldview.
43.
The age of Jose Rizal when his parents sent him to Biñan to undergo formal schooling
Correct Answer
B. 9 years old
Explanation
Jose Rizal was sent to Biñan to undergo formal schooling at the age of 9 years old. This suggests that his parents believed he was ready for formal education and that he was at an appropriate age to begin his studies. Sending him at this age would have allowed him to start his education at a young age and potentially benefit from a longer period of formal schooling.
44.
Rizal submitted a poem which won first prize at the Liceo Artistico Literario de Manila.
Correct Answer
C. “A la Juventud Filipina”
Explanation
The correct answer is "A la Juventud Filipina" because it is the only poem mentioned that won first prize at the Liceo Artistico Literario de Manila. The other poems listed, "El Consejo delos," "Amor Patrio," and "Mi Piden Versos," are not stated to have won any prizes.
45.
Rizal’s first professor
Correct Answer
B. Fr. Jose Beach
46.
The publisher of Diariong Tagalog who was a friend of Jose Rizal
Correct Answer
D. Basilio Moran
Explanation
Basilio Moran is the correct answer because he was the publisher of Diariong Tagalog, a newspaper that was established by Marcelo H. Del Pilar. Jose Rizal was a friend of Del Pilar, not Moran. Pedro A. Paterno and Edwardo de Lete were also not the publishers of Diariong Tagalog.
47.
The pen name of Rizal used to write the essay in Barcelona
Correct Answer
A. Laong laan
Explanation
The correct answer is "Laong laan." Rizal used this pen name to write his essays while he was in Barcelona.
48.
Rizal spent his money wisely and never on these things.
Correct Answer
A. Wine and women
Explanation
The given statement suggests that Rizal was prudent with his money and did not spend it on wine and women. This implies that he was responsible and focused on his priorities, possibly indicating that he prioritized his personal and professional growth over indulging in vices. The mention of the Spanish lottery, writing articles, and operas and concerts suggests that Rizal did not waste his money on gambling, leisure activities, or unnecessary expenses, further reinforcing his wise financial choices.
49.
What does TRAIN Law stands for?
Correct Answer
C. Tax Reform for Acceleration and Inclusion Act
Explanation
The correct answer is "Tax Reform for Acceleration and Inclusion Act". The TRAIN Law is a tax reform program implemented in the Philippines, aimed at accelerating economic growth and promoting inclusivity. It seeks to simplify the tax system, lower personal income tax rates, and increase taxes on certain goods and services to generate revenue for infrastructure projects and social services.
50.
June 12: Philippine Independence ; July 4: ____________
Correct Answer
B. pHilippine- American Friendship Day
Explanation
The correct answer is Philippine-American Friendship Day. This is because July 4 is historically significant for the Philippines as it marks the day when the country gained independence from the United States in 1946. The day is commemorated to celebrate the strong ties and friendship between the Philippines and the United States.