The process whereby a fluid spreads from a more concentrated area to a less concentrated area ___.

Which of the following cause the decay of nonliving organisms by absorbing nutrients from them?

The boundary between two different air masses is a/an.

Which of the following is a metamorphic rock?

Weather is the condition of the atmosphere at a given place and time. Which of the following is NOT considered as one of the elements of weather?

Arthropods are animals with jointed appendages. Which of the following animals belong to this group?

The transfer of pollen grains from one flower to the stigma of another flower of the same kind is called ___?

A neutral atom consists of charged particles. The negatively-charged particles surrounding the nucleus are the ___.

Lymphocytes are one of the major types of white blood cells. Which endocrine gland stimulates the production of lymphocytes?

A person gets infected by hepatitis A-causing virus. Which part of the body does this virus infect?

Cellular functions arise from cellular order of the organelles. Which of the following organelles provides energy for the cell?

A blood vessel that carries blood back to the heart is the ___.

What do you call the position of the moon farthest from the Earth?

Jupiter is the largest planet in the solar system and has at least 16 moons. Which of the following is the largest among the satellites of Jupiter?

Lunar eclipse may occur when ___.

Animals get information from the environment through their receptors and transmit the information to the brain for interpretation. Which of the following receptors is associated with the sense of smell?

In plants, fertilization takes place when ___.

Most plants have green leaves. This is caused by a pigment in the plant cell that traps light. Which is responsible for the green color of the plants?

Chemical digestion in the stomach involves the secretion of an acid that stimulates the production of digesting enzymes. Which of the following acids is secreted in the stomach?

Which of the following is NOT an example of matter?

Which part of the flower becomes a seed?

A phase change is a type of physical change in which the state or appearance of a matter changes but its chemical composition does not. Which of the following does NOT show a phase change?

Atoms of the same elements may have the same atomic numbers but may have different mass numbers. These atoms are called ___.

The imaginary line that divides the earth into halves, the northern and the southern hemisphere is called the ___.

Which of the following statements proves that the earth is a magnet?

All planets revolve around the sun in a certain path called ‘orbit’. The shape of the Earth is ___.

Which of the following is NOT a characteristic of a sedimentary rock?

A waling-waling is attached to a tree. It is an example of an ecological relationship known as ___.

The attraction of the molecules of a substance to the molecules of the same substance is called ___.

Which of the following hormones is responsible for the development of secondary sexual characteristics of females?

More than 300 years ago, Robert Hooke used a primitive microscope to observe the box-like cavities in slices of cork. These compartments are found to be the structural and functional unit of life. They are now called ___.

Which of the following properties may NOT change when there is a change in the amount of the object?

Scientist have found that the amount of carbon dioxide in the atmosphere has increased significantly in the past years causing a rise in the global temperature. The trapping of heat in the Earth’s atmosphere known as the ___.

Which of state of matter is composed of electrically charged atomic particles that glow as if burning?

Which of the following is NOT a characteristic of a mineral?

A living organism gets rid of its waste materials through the excretory system. Which of the following is NOT considered a part of the human excretory system?

The rhythmic expansion and contraction of blood vessels caused by the pressure of the blood is called ___.

Which of the following groups of animals belongs to Class Crustacea?

The pancreas consists mostly of exocrine tissue. Scattered within this tissue are structures called the islets of Langerhans. Which of the following hormones is secreted by the islets of Langerhans that maintain the glucose level of blood?

The moon and the sun exert a gravitational pull on earth causing a change in the water level of the oceans. What is this rise and fall in water level called?

In females, what is the hormone whose function is important for the occurrence of menstruation called?

The hormone responsible for the development of secondary male characteristics is

Which of the following is a shrub?

Which of the following instruments measures the amount of moisture in the air?

It states that the Earth’s crust is composed of small pieces that move relative to each other. This theory is called ___.

A characteristic of amphibians that distinguishes them from reptiles is their moist skin. Which of the following animals has this characteristic?

What term refers to the ability of a mineral to scratch another substance?

When food is swallowed, it is involuntarily pushed along the esophagus towards the stomach. What do you call the wavelike motion of the muscles in this tube?

A positively charged atom is called a/an ___________.

The smallest living part of an organism is the _______.

Plant cells are covered by cell walls. Cell wall is for ______.

A unit of chromosome that determines the characteristics of an organism is the _____.

s best adapted to their environment are the ones most likely to?

When species do not have the traits needed to adapt to changes in environment, they are likely to become _________.

Humans have caused other species to become extinct faster than they naturally do. Most of the harm that humans bring to these species is by _____

If a plant that is curved toward light is turned around, it will ___?

Which of the following statements is true?

Animals whose body temperature changes when the temperature around them changes are _____?

During the process of _____, plants make sugar from sunlight, water and carbon dioxide.

During ______, sugar and oxygen are broken down and energy is released.

Organisms that harm another organism by living on or in it and taking nutrients from it, like the flatworms are ______?

During the pioneer stage of succession, the first organisms to live on damaged land are usually ______?

Poinsettia is a flower that blooms only in December. It is a ____?

______ is the female reproductive organ of the flowering plant located in the center of the flower surrounded by stamen.

The first evidence of man was found in the _______.

The plants and animals that first inhabited the earth___

All of the following are connective tissues except the _____.

The skin is a type of tissue called _____.

The organ in which digestion is completed is the _____?

The organ that removes the solid waste material from the body is the _______?

An enzyme that breaks down food is produced in the _______?

Digestion starts in the _____?

Villi are found in the _____?

The way in which we get air into the lungs and carbon dioxide out of the lungs is called _____?

_______ warms and moistens air coming into the body.

________ is a dome-shaped muscle below the chest cavity.

Blood enters the kidney through the _____ and passes into small vessels that lead to tiny tube-like structures called nephrons.

The process of moving digested food through the villi into your bloodstream is called _____?

Food, oxygen, and wastes enter and leave the blood through the _____?

The exchange of carbon dioxide and oxygen in the respiratory system takes place within the ______?

The menstrual cycle stops during _____?

During puberty ________.

Human sex cells normally have _______?

Which person’s sex chromosome determine the sex of an offspring?

A person with the sex chromosomes XY is a ______?

Which combination of particles is neutral?

How much work does each man do?

What is the AMA of a machine that lifts a weight of 120N with an effort of 20 N?

What is the efficiency of the machine that does 168N-m output work with 224N-m of input work?

What is the IMA of an inclined plane 20m long and 4m high?

What weight is lifted by a lever with a 3-m resistance arm when 24N is applied to the 5-m arm?

How much work is done?

The maximum height reached by a wave from its rest position called ______?

Which of the following statements is true?

How much current will 120 volts send through a resistance of 2 ohms?

What is the resistance of an electric toaster if 120 volts send a current of 5 amperes through it?

Find the total wattage of an electric range that uses a 5-ampere current on a 230-volt line.

It is the process of food-making in the plant. During this process, light energy from the sun is trapped in the chloroplasts and changed to chemical energy.

A cell that is not identical to either parent, but has characteristics of both is produced by ________?

Which of the following statements IS ALWAYS TRUE?

Leaves are especially important in _________?

A closed circulatory system of vertebrates is important because it____

Skeletal muscles are voluntary and usually work in opposing pairs. When a skeletal muscle contract, it _______

Bones connect at joints. Cartilage reduces friction at the joints and prevents the bone ends from grinding away. Bone is made of?

Cardiac muscle is an involuntary muscle found in the ____. It makes very strong contractions and rarely tires. Each cardiac cell has a built-in rhythm of contraction.

Every day we twist, bend, reach, glide, and grip. We can move in these ways because our bones connect at places called joints. Bones that meet at movable joints are held close together by ligaments. A joint is sprained when?

Ball-and-socket joints allow circular movement. An example of this is the _______

Human skin cools the body, provides nerve endings, and protects the body from diseases causing organisms, ultraviolet rays, and excessive water loss. Skin produces a dark brown chemical called melanin. Melanin ______?

Digestion breaks large food molecules into small molecules that can enter your cells. Most food is digested and absorbed in the ________?

Food contains over one hundred substances called nutrients that the body needs to survive. Nutrients are grouped into six main classes. Which three classes of nutrients can supply the body with energy?

Food is liquified, stored, and mixed with hydrochloric acid and digestive enzymes in the ________?

Blood transports food, oxygen, and wastes throughout your body. It also carries infection fighters, enzymes and chemical messengers. Food, oxygen and wastes enter and leave the body through ________?

The heart is like two pumps in one. The right pump collects blood and sends it to your lungs. Oxygen and carbon dioxide are exchanged in the lungs. The left pump collects blood from the lung and pumps it throughout the body. Blood travels from the lungs to the left atrium through the _______?

Which of the following is a function of blood?

Which system exchanges gases between cells and lungs?

Which of the following describes the major difference between bryophytes and tracheophytes?

The myofilaments of muscles consist primarily of two proteins. These two proteins are called ___.

The chromosomes responsible for characteristics other than sex are known by which of the following terms?

Each of the following is a cell organelle except one. Which one of these is NOT a cell organelle?

Hormones are composed from many classes of molecules. As far as our present knowledge extends, hormones are NOT found in which of the following categories of substances?

In a plasma membrane, which of the following provides a general barrier to the movement of molecules?

In the first stage of photosynthesis, light energy is used to ________________.

Osmoregulation is concerned with:

Which of the following is not an arachnid?

Water molecules enter plant epidermal cells by:

The immune system normally discriminates between which types of antigens?

What percent of the total radiant energy received by a plant is converted to chemical energy?

Humans cannot digest cellulose because __________________.

In which cerebral lobes is the speech center located?

In the first stage of photosynthesis, light energy splits water molecules leaving a by-product which is released. This byproduct is _______.

The muscle which is under involuntary control is ___________.

Of the following three substances, which provides the LEAST source of energy for the body?

Which cell count tends to be elevated when an individual has an allergy or parasitic worms?

The loss of water by plants in the form of vapor is called __________.

Sponges are included in which of the following phyla?

All of the following are characteristic of amphibians EXCEPT:

In flowers the terminal part of a stamen, containing the pollen sacs is known as the __________.

Of the following, which is NOT a viral disease?

Surplus red blood cells, needed to meet an emergency, are MAINLY stored in what organ of the human body?

The several types of white blood cells are sometime collectively referred to as ________________.