Science & Technology

Test Your Scientific Prowess By Passing This Challenging Science Quiz

With so many distinct subfields in science, you may spend a lifetime perfecting your knowledge in just one small area within a much bigger one and yet fall short of perfection. Use this quiz to determine how well you comprehend these scientific ideas.

What is leukemia?

A low white blood cell count

A low platelet count

A high red blood cell count

Cancer of blood cell producing tissue

Cancer of blood cell producing tissue
White blood cells are produced in great quantities as a result of leukemia. Due to the immaturity of these white blood cells, this both decreases the formation of other blood cell types and weakens immune system performance

In the body, ____ blood arteries serve as the conduits for the exchange of oxygen and carbon dioxide

capillaries

venules

arteries

arterioles

capillaries
Capillaries are just one cell layer thick, which facilitates the interchange of materials more easily than if the vessels were made of many cell layers.

What distinguishes a hypothesis from a theory?

A theory is not falsifiable; a hypothesis is falsifiable.

A theory and a hypothesis are different terms for the same thing.

A theory is a comprehensive explanation of a phenomenon; a hypothesis is a generalized statement that can be used to generate testable predictions

A theory is a fact; a hypothesis is a comprehensive explanation.

A theory is a comprehensive explanation of a phenomenon; a hypothesis is a generalized statement that can be used to generate testable predictions
Developing a theory from a hypothesis might result in data that either confirms or refutes an existing theory. Hypotheses are the first steps in this process.

____ is the name given to the accumulation of plaque in artery walls

arteriosus

arterioclogus

atherosclerosis

arterionecrosis

atherosclerosis
The chemicals that make up plaque include lipids, cholesterol, and other elements. The plaques reduce an artery’s diameter and restrict blood flow, occasionally to the point of stopping it.

A hypothesis must be ____ to be considered scientifically valid

phrased as a question

testable and falsifiable

based on faith

true

testable and falsifiable
Science isn’t science if it can’t be tested and refuted.

Describe phlebitis

Inflammation of the arteries

Inflammation of the veins

Inflammation of the capillaries

Ballooning of a region of an artery

Inflammation of the veins
Phlebitis is an inflammation, and the word “phleb-” denotes vein.

Methanogens are certain archaeans. Swamps, cows’ guts, and even human colons are home to certain methanogens. What gas does methanogen metabolism result in the emission of?

Carbon monoxide

Carbon dioxide

Ozone

Methane

Methane
Methanogens produce methane, as the name suggests

Which of the following environments is the one where severe halophiles are most likely to be found?

Great Salt Lake

Atlantic Ocean

Lake Placid

Pacific Ocean

Great Salt Lake
The Great Salt Lake is the most salinized of these habitats

How does caffeine affect your level of energy?

Caffeine stimulates the nervous system.

Caffeine provides both calories and stimulates the nervous system

Caffeine inhibits nerve impulses

Caffeine speeds up blood circulation.

Caffeine stimulates the nervous system.
There are no calories in caffeine. Without really giving the body any energy, it stimulates the neurological system to make you feel invigorated.

Chestnut blight, a form of ____ infection, nearly led to the demise of the American chestnut.

archaean

bacterial

viral

fungal

fungal
The American chestnut is on the verge of extinction due to chestnut blight. The species is still being saved by ongoing efforts. These attempts involve developing American chestnut strains that are blight resistant.

When you have a cold, why does food taste bland?

Much of what we perceive as taste is actually smell.

The lack of desire to eat when ill causes food to taste bad

A cold increases the rate at which taste buds die and replacement taste buds are formed at a slower-than-usual rate

A cold causes taste receptors to malfunction

Much of what we perceive as taste is actually smell
A cold-related stuffy nose restricts the olfactory receptors in the nose, which dulls the flavor of food.

The ____ is the biggest component of the brain

medulla oblongata

cerebrum

cerebellum

hypothalamus

cerebrum
The biggest region of the brain is the cerebrum, which has five lobes

Compared to other cell types, archaeans resemble ____ cells more

fungal

animal

bacterial

plant

bacterial
Archaeans are unicellular prokaryotes, just like bacteria. However, it is known that archaeans are more closely related to eukaryotes than to bacteria based on other data, such as that acquired from examination of their ribosomes.

Nonvascular plants have a flagellum in their sperm. As a result, their sperm reach the egg by _____

being blown there in the air

being pollinated by bees

swimming in water

crawling along the ground

swimming in water
Flagellated sperm swim to the egg. This is one of the reasons why most plants, including mosses, are restricted to damp settings.

Starfish move using their:

tentacles

noses

tube feet

fins

tube feet
All echindoderms, including starfish, have a special hydraulic system that they employ in a manner similar to how other animals employ their muscular systems.

LSD originated from:

bacterium

plant

animal

fungus

fungus
The original source of LSD was ergot, a fungus that grows on grains

From where did sponges originally come?

Lobsters

Sponges

Fish droppings

Jellyfish

Sponges
Domestic sponges gained their name in this way. Sponge used in everyday life used to be a live organism.

____ is used to evaluate the heart’s electrical activity

EKG

EKG

ASD

ABC

EKG
Electrocardiogram, often known as EKG or ECG. Any abnormalities seen by an EKG might indicate an issue with cardiac function.

There are auditory receptors in the _____

ear

nose

eye

mouth

ear
Hearing is referred to as auditory.

Which of the above phrases describes the blood pressure reading taken while the heart is beating?

Hyperstolic

Diastolic

Systolic

Hyperbolic

Systolic
When the heart beats faster than when it relaxes, blood pressure rises. The higher figure, known as the systolic pressure, is your blood pressure while your heart is contracting and is the second number you are given when your blood pressure is taken. When the heart has relaxed, your blood pressure, or diastolic blood pressure, is the lower value. These numbers provide a crucial indicator of cardiovascular health when taken as a whole.

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