Science

Question 1

A 25-year old pregnant woman is on her last month of pregnancy and has been experiencing uterine contractions every 20 minutes. The hormone responsible for having this contractions is called _____.

Answer 1

Oxytocin

Question 2

It is best defined as a major climatologic regions with consistent inhabiting populations.

Answer 2

Biome

Question 3

It is a massive star that has collapsed to such a small volume that its gravity prevents the escape of everything, including light.

Answer 3

Black hole

Question 4

It is a change in state from solid to gas without passing the liquid state.

Answer 4

Sublimation

Question 5

Animal that has a variable body temperature.

Answer 5

Cold-blooded animal

Question 6

Animal that has fixed body temperature.

Answer 6

Warm-blooded animal

Question 7

It is a distance light that travels in a year.

Answer 7

light-year

Question 8

How many kilometers does a light-year travel?

Answer 8

9.5 trillion kilometers

Question 9

It is a luminous phenomenon observed when a meteoroid enters Earth’s atmosphere and burns up.

Answer 9

Meteor

- popularly called shooting star

Question 10

Any portion of a meteoroid that reaches Earth’s surface.

Answer 10

Meteorite

Question 11

It is a small, solid particle that travels through space.

Answer 11

Meteoroid

Question 12

It is a gas that is composed of free-floating ions (atoms stripped of some electrons).

Answer 12

Plasma

Question 13

It is a group of organisms with same species that can interbreed in natural setting. Therefore, it can pass their traits from one generation to another generation.

Answer 13

Population

Question 14

It is any quantity in physics that has magnitude, but not a direction associated with it.

Answer 14

Scalar quantity

Question 15

It is the apparent brightness of a star if it were viewed from a distance of 32.6 light years.

Answer 15

Absolute magnitude

Question 16

Agricultural centers have found lately varieties of coconut propagation thru _____.

Answer 16

putting up plant nurseries

Question 17

Albino corn seedlings may grow several inches tall. However, they will eventually die, primarily because _____.

Answer 17

they cannot produce their own food

Question 18

It is an alternative form of a gene.

Answer 18

Allele

Question 19

It is a compound with nitrogen and hydrogen.

Answer 19

Ammonia

Question 20

It is any formation in which groundwater rises on its own under pressure.

Answer 20

Artesian well

Question 21

It is located in the center of an atom that contains protons and neutrons and represents most of the mass of an atom.

Answer 21

Nucleus

Question 22

This level of biological organization shows the interaction of molecules within one cell.

Answer 22

Cellular level

Question 23

These are also known as fruit-bearing plants or flowering plants.

Answer 23

Angiosperms

- Examples: tomatoes and cucumbers

Question 24

These are plants with vascular tissues, with seed inside/outside a fruit.

Answer 24

Angiosperms

Question 25

It requires no fertilization causing no variation because there is no crossing-over of chromosomes. This happens only from a single parent and producing an offspring of exact copy.

Answer 25

Asexual reproduction

Question 26

It is the study of celestial bodies such as stars, comets, planets and galaxies and phenomena that originate outside the earth's atmosphere.

Answer 26

Astronomy

Question 27

This means that the average annual precipitation over Earth is equal the amount of water that evaporates.

Answer 27

Balance in the water cycle

Question 28

Based on this rule, Pyrimidine nitrogenous base is always complementary to cure a nitrogenous base.

Answer 28

Chargaff's rule

Question 29

Chemist use this very small unit of mass because the mass of subatomic particles is so small.

Answer 29

Atomic mass unit (amu)

Question 30

This principle states that as the velocity of a fluid increases, the pressure exerted by the fluid decreases.

Answer 30

Bernoulli's Principle

Question 31

It consists of particles called bosons which exists at the temperature of 0 K or -273°C with most minimum amount of energy a particle can possess.

Answer 31

Bose-Einstein Condensate

Question 32

``` It is the part of the brain that controls the following activities: • breathing • blood pressure • heart rate • alertness. ```

Answer 32

Brain stem

Question 33

What are the 3 statements of cell theory?

Answer 33

1. All living organisms are made up of cell. 2. Cell is the basic functional unit of life. 3. Cells came from pre-existing cells.

Question 34

It refers to a disorder which muscular control and coordination are impaired due to brain damage.

Answer 34

Cerebral palsy

Question 35

It is a severe damage to some parts of the brain due to lack of blood supply.

Answer 35

Cerebrovascular accident

Question 36

These are properties that are only observable when the substance reacts with another substance thereby causing a change in a chemical composition of the substance.

Answer 36

Chemical properties

Question 37

It is a science that describes matter - its properties, the changes it undergoes and the energy changes that accompany those processes.

Answer 37

Chemistry

Question 38

It is a thread of DNA made up of genes.

Answer 38

Chromosome

Question 39

It is described as the lifeline of the body. It is the body's "pickup and delivery system."

Answer 39

Circulatory system

Question 40

It is the tendency of a mineral to break along flat, even surfaces.

Answer 40

Cleavage

Question 41

It is the relationship between an organism and a host where neither is benefited nor harmed.

Answer 41

Commensalism

Question 42

Comparing the speed of sound in liquids, gases and solids, the speed of sound is usually lowest in _____ and highest in _____.

Answer 42

Gases | Solids

Question 43

It is the study of the nature of the universe its origin and overall structure.

Answer 43

Cosmology

Question 44

These are pyrimidine nitrogenous bases.

Answer 44

Cytosine and Uracil.

Question 45

These are purine nitrogenous bases.

Answer 45

Guanine and Adenine

Question 46

It is a process in which a substance is broken to make it useful in other processes.

Answer 46

Decomposition

Question 47

The organisms that are capable of decomposing a substance for called _____.

Answer 47

Saprophytes

Question 48

Who proposed that matter was composed of tiny indivisible particles?

Answer 48

Democritus (400 BC)

Question 49

It is the driest ecosystem, very low amount of precipitation, may have very high or very low temperature.

Answer 49

Desert | * Presence of life form is none or low.

Question 50

It is the conversion of semi-arid (arid -dry) areas to absolute desert.

Answer 50

Desertification