The professionals who handle animal diseases are known as

Dengue affected patients are easily identified through

Agriculturists advise farmers during the presence of El Niño to raise

Dengue fever has caused death to many children and adults. All these are traced to

Ms. Garcia has a rare collection of orchids. She applied jelly on her orchid’s leaves. Soon the orchids slowly wilted because

Chicken pox is a dangerous disease especially in children. At what stage is it very contagious?

The school physician diagnosed children in a certain town suffering from night blindness. He prescribed the taking in of

Iya’s mother had German Measles when she was carrying Iya in her womb. Which of these physical appearance shows the effect on the child?

What term is used for one who depends entirely for subsistence?

Any change in the base coding of a DNA molecule alters the trait associated with the gene, hence the organism may appear with a trait that is totally different from those of the parents. What is this change called?

Using a genetic engineering technique, researchers were able to produce a rare protein which may be able to cure cancer. Which is it?

What is the cell wall of a plant made of?

Which modified stem is used for storage of food?

Which of the following is used by medical workers in obtaining information about internal body parts?

The condition of the atmosphere that exists for a short period of time.

Which of the following processes is better associated with technology rather than with science?

Which of the following is the primary reason why scientist repeat the measurement they take during experiments?

In order to escape the gravitational pull, an object must be travelling at a speed of __________?

Where do we trace the El Nino phenomena?

Which of the following instruments can measure intensity of earthquakes?

Why do mountain climbers use oxygen equipment at very high altitude?

During an investigation, we follow several steps. Arrange the following in the most logical manner?

1. Formulate a hypothesis

2. Perform an experiment

3. State the problem

4. Draw conclusions

Why do we see the sun rise in the east?

To which type of rock granite belong?

Which is a biotic component of the ecosystem?

What type of thermonuclear reaction that occurs in the sun which generates a tremendous amount of energy?

How can you help minimize the heavy pollution that is caused by excessive carbon dioxide emissions in the surroundings?

What phenomenon occurs when the length of day and night varies depending on the inclination of the earth’s axis?

Why do four seasons occur on Earth?

A teacher demonstrated the possible effects of acid rain by placing several types of rocks in separate beakers containing a vinegar solution with a pH of 3. As time passed, some of the solutions retained a pH of 3 while other solutions gradually reached a pH of 7. Which of the following best explains this variation of pH in this demonstration?

A day on Saturn takes about 10 Earth hours. Which fact would best explain this short day?

In an area where a river has cut deep into Earth, there are several layers of very different rock exposed. The oldest rock layer is most likely to be the layer that is

Which of the following statements best describes how the planets of the solar system formed?

The existence of extraterrestrial life may never be proven, but this idea will become more scientifically acceptable over time if

Which of the following is the best evidence that Earth’s continents were once in vastly different positions than they are today?

Evidence suggests that Earth is about 4.6 billion years old, even though no Earth rocks have been found that can be dated at more than 4 billion years old. This discrepancy is most likely caused by

Earth’s original crust being

As part of the modern theory of the origins of the elements, it is hypothesized that before the formation of the stars, most of the matter in the universe consisted of what atoms?

Stars begin their life cycle in

Which of the following provides evidence for plate tectonics?

A rift valley is evidence of which kind of plate boundary?

The convergence of two continental plates would produce

It is generally true that igneous rocks

Which type of volcano would be the least explosive?

The Richter scale measures which of the following earthquake characteristics

Only about 50% of the solar energy directed toward Earth penetrates directly to the surface. What happens to the rest of the radiation?

The Moon is very hot on the side facing the Sun and very cold on the dark side. This extreme temperature difference is primarily due to the Moon’s

Venus is warmed by solar radiation, but its thick cloud cover increases the temperature because the clouds

Which of these could increase average global temperatures?

More solar energy reaches the equatorial regions than the polar regions because the equatorial regions

What causes the wind deflection from the north and south poles?

When a layer of cool air at the surface of Earth is found under a layer of warmer air above it, the result is known as

Which of these effects generally occurs as the result of a warm air mass and a cooler air mass converging at Earth’s surface?

Scientists have found fossils of tropical plants in Antarctica. How could tropical plants have grown in Antarctica?

From Earth’s atmosphere, carbon dioxide is used by plants, algae, and cyanobacteria during the process of

Carbon in the atmosphere is most often found as which of the following compounds?

Earth’s atmosphere is divided into layers that are based upon their

The primitive atmosphere of Earth was deficient in free oxygen. What process was primarily responsible for the development of the present percentage of free oxygen in the Earth’s atmosphere?

Most of the molecular oxygen in the early atmosphere of Earth resulted from

Which of the following human activities reduces the level of ozone in the atmosphere?

Once the erythrocytes enter the blood in humans, it is estimated that they have an average lifetime of how many days

Of the following, which mechanisms are important in the death of erythrocytes in human blood?

When a human donor gives a pint of blood, it usually requires how many weeks for the body RESERVE of red corpuscles to be replaced?

Lengthening of long bones in humans occurs in a particular area of the bone. This area is called the

The part of the human brain which is an important relay station for the sensory impulses and also is the origin of many of the involuntary acts of the eye such as the narrowing of the pupil in bright light is the

Cariology is the study of the

During the final stage of cell division, the mitotic apparatus disappears, the chromosomes become attenuated, the centrioles duplicate and split, the nuclear membrane becomes reconstituted, and the nucleolus reappears. This phase of cell division is known as

This major protein component of connective tissue in mammals comprises most of the organic matter of skin, tendons, bones, and teeth, and occurs as fibrous inclusions in most other body structures. Is this material

Sickle cell anemia and Huntington's chorea are both

Which of the following are NOT part of a neuron?

Melatonin is produced by the

Which of the following statements is TRUE of insulin?

Fertilization of the ovum by the sperm usually occurs in the

A layer of dead skin cells is found in the

Which of the following is an INCORRECT statement about the parasympathetic system? a. It increases digestive action.

Which of the following is NOT a component of the human axial skeleton?

Select the INCORRECT statement concerning the muscular system.

During inspiration, the diaphragm moves:

The valve between the right ventricle and the pulmonary artery is the

Which of the following is NOT a function of the kidney?

Digestion of carbohydrates begins where?

Bile has what function in digestion?

Of the following, which is a basic need of all living things?

A virus must do what to reproduce?

The chromosomes of a eukaryotic cell are located in the:

Which of the following is an example of symbiosis?

A heart with a single atrium and single ventricle is a characteristic of adult:

The physical appearance and properties of an organism which is the expression of the genetic makeup is called the:

Organisms with cells containing two sets of parental chromosomes are called:

The type of gene interaction in which the effects of one gene override or mask the effects of other entirely different genes is called:

For which of the following creatures is fat the greatest percentage of body weight?

Which is false regarding freshwater fish?

Neutral fats, oils and waxes may be classified as:

Which of the following is NOT a characteristic shared by most of the members of the kingdom plantae?

During which phase of the cell cycle are normal components of the cell synthesized and assembled?

Which of the following is NOT a mode of genetic exchange within bacterial population?

Myelin sheaths are found:

Synapsis and crossing over of chromosomes occur in which phases of meiosis?

The placenta in humans is derived from the:

Which of the following tissues secrete hormones?