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Sample Practice Test Questions

General Science

In the food chain, omnivores may be which of the following?

secondary or tertiary consumers

Secondary or tertiary consumers may be omnivores.

General Science

Generally, an atom has __________ negative electrons orbiting the nucleus as it does positive protons inside.

equal numbers of

An electron is a subatomic particle that orbits the nucleus of an atom. It carries a negative electric charge. Generally, an atom has the same number of negative electrons orbiting the nucleus as it does positive protons inside.

General Science

Which of the following is the narrowest classification of life?

species

The narrowest classification of life, species, contains organisms that are so similar that they can only reproduce with others of the same species.

General Science

Tertiary consumers eat which of the following?

primary and secondary consumers

Tertiary consumers eat primary consumers and secondary consumers and are typically carnivorous predators. Tertiary consumers may also be omnivores. Examples include wolves, sharks, and human beings.

General Science

Which of blood component allows blood to clot?

platelets

Blood is created in bone marrow and is made up of cells suspended in liquid plasma. Red blood cells carry oxygen, white blood cells fight infection, and platelets are cell fragments that allow blood to clot.

General Science

Saturated fats can __________ LDL ("bad") cholesterol while unsaturated fats can __________ it.

raise, decrease

Saturated fats can raise LDL ("bad") cholesterol while unsaturated fats can decrease it.

Electronics Information

Electrons will flow as current from areas of __________ potential (concentration of electrons) to areas of __________ potential.

high, low

Voltage (V) is the electrical potential difference between two points. Electrons will flow as current from areas of high potential (concentration of electrons) to areas of low potential. Voltage and current are directly proportional in that the higher the voltage applied to a conductor the higher the current that will result.

Electronics Information

Which of the following is not a characteristic of a step-up transformer?

the primary voltage is higher than the secondary voltage

As their names indicate, a step-up transformer is used to step up or increase voltage and a step-down transformer is used to step down or decrease voltage. In a step-up transformer, the secondary voltage is higher than the primary voltage and it has more turns in the secondary winding than in the primary winding.

Word Knowledge
Stealth most nearly means:
furtiveness
The act of moving secretly or unnoticed.
Word Knowledge
The accountant advised Justine not to report her incidental expenses.
petty
Minor.