Worksheets6th Grade Final
Total questions: 85
Worksheet time: 43mins
A substance that cannot be broken down into simpler elements is a(n)
particle
element
carbohydrate
compound
Carbon dioxide is an example of a(n)
compound.
nucleic acid.
sugar.
element.
Specialized cells are found only in
animals.
single-celled organisms.
bacteria.
many-celled organisms.
Cells in many-celled organisms
all look the same.
all have the same structure.
are usually specialized.
are the same size in every part of the organism.
What is the basic unit of structure and function in a living thing?
a cell
a tissue
an organ
an organ system
Unlike Hooke, Leeuwenhoek observed cells that
had no cell walls.
came from plants.
were alive.
could only be seen with a compound microscope.
The invention of the microscope made it possible for people to discover
plants.
skin.
animals.
cells.
Which of the following statements is part of the cell theory?
Only plants are composed of cells.
All cells are produced from other cells.
Cells can be produced from nonliving matter.
Cells are one of several basic units of structure and function in living things.
What does the term resolution refer to?
how well structures close together can be distinguished
how large an image can be
how many lenses a microscope uses
how much light is needed to see an image
Many substances move through cell membranes from areas of higher concentration to areas of lower concentration in the process of
cellular respiration.
diffusion.
reproduction.
DNA replication.
What is the function of a cell wall?
to protect and support the cell
to perform different functions in each cell
to prevent water from passing through it
to prevent oxygen from entering the cell
Which organelle is the control center of a cell?
mitochondrion
ribosome
nucleus
chloroplast
What is the function of a cell membrane?
to support the cell
to perform different functions in each cell
to control which substances enter and leave the cell
to form a hard outer covering for the cell
Which of the following best describes the function of mitochondria?
They convert energy from food molecules into energy the cell can use.
They store energy from food molecules.
They store energy from sunlight.
They produce nucleic acids that release energy.
Unlike the cell wall, the cell membrane
is found in all cells.
is made of chromatin.
protects the nucleus with a rigid layer of cellulose.
produces energy for the cell.
Which organelles store food and other materials needed by the cell?
mitochondria
chloroplasts
ribosomes
vacuoles
Which organelles release chemicals that break down large food particles into smaller ones?
endoplasmic reticulum
Golgi bodies
lysosomes
vacuoles
Mitosis is the stage of the cell cycle during which
the cell’s nucleus divides into two new nuclei.
the cell’s DNA is replicated.
the cell divides into two new cells.
the cell’s cytoplasm divides.
During what stage of the cell cycle does replication occur?
interphase
cytokinesis
prophase
mitosis
The regular cycle of growth and division that cells undergo is called
replication.
the cell cycle.
interphase.
mitosis.
What forms around the chromatids during mitosis?
two new chromosomes
two new nuclei
two new cells
two new DNA molecules
What is copied during replication?
the cell’s organelles
chromosomes
the cell’s DNA
two daughter cells
What happens during cytokinesis in animal cells?
A new round of mitosis begins.
Two new daughter cells are formed.
Each organelle divides into two parts.
A cell plate forms in the middle of the cell.
At the end of mitosis, chromosomes provide each daughter cell with
half the parent’s genetic material.
an exact copy of the parent’s genetic material.
twice the amount of the parent’s genetic material.
four times the amount of the parent’s genetic material.
Which of these is arranged from smallest to largest level of organization?
organs, tissues, cells, organ systems
compounds, cells, tissues, organs
molecules, atoms, elements, compounds
atoms, organs, cells, organ systems
Which of the following is not absorb by a human cell?
oxygen
carbon dioxide
food
water
Rita is looking at a drop of pond water through a compound microscope. The microscope has a 10´ lens in the eyepiece and Rita is using a 40´ lens on the revolving nosepiece. At what magnification is Rita viewing organisms in the pond water?
4x
40x
400x
4000x
The process by which plants and some other cells make their own food is known as
diffusion.
homeostasis.
cellular respiration.
photosynthesis.
Which cellular structure contains thin strands of DNA known as chromatin?
nucleus
cell membrane
mitochondria
golgi apparatus
Which of these is not a function of cell division?
growth
respiration
repair
reproduction
Where does the energy that powers the water cycle come from?
plants
animals
electrical outlets
Sun
What is evaporation?
water freezes
water vapor meets cold air and changes back to liquid
water gets warm and changes from liquid water to water vapor
plants take in water from the soil
From where does most water evaporates?
oceans
puddles
rivers
lakes
Imagine that you hear the following weather report: “Florida is sweltering in summerlike heat and humidity ahead of a cold front that promises to bring down polar air from Canada and cool down the state next week.” What is a front?
a region where there are severe thunderstorms
an area where a tropical storm is likely to form
a boundary between two air masses with the same temperature
a boundary between two air masses with different densities and usually different temperatures
What is the correct term for plants releasing water from their leaves, which then evaporates?
evaporation
transpiration
precipitation
condensation
How would you explain the difference between climate and weather?
Weather is the local condition at a particular time and place, climate refers to the weather in a larger area.
Weather is a condition at a particular time and place, climate is the average condition at a particular place over time.
Weather refers to the amount and type of precipitation in an area at a particular time and place, climate is the average amount and type of precipitation in an area over a long period of time.
Climate is a condition at a particular time and place, weather is the average condition at a particular place over time
Sarah watches a baker make a pizza and place it in a special oven. A fan moves air around inside the oven, cooking the pizza quickly and evenly. What method of energy transfer does the fan affect?
convection
conduction
radiation
evaporation
The atmosphere appears to be a static part of Earth; however, the air in the atmosphere moves and changes. How does the motion of air affect the oceans on Earth?
It causes high tides and low tides in the ocean.
It increases ocean levels, causing flooding on land.
It raises water temperature, causing climate change.
It creates wind, which partly controls the ocean’s currents.
The air on the East Coast of the United States feels very different from the air on the West Coast. The
West Coast borders the Pacific Ocean, which is a cold body of water. The East Coast borders the Atlantic Ocean, a body of water affected by a warm ocean current that comes up from the Gulf of Mexico. Which of the following statements describes how these different ocean currents most likely affect the atmosphere along the coastal areas of the U.S.?
There are fewer clouds along the east coast.
There is higher humidity along the east coast.
There are more storms along the west coast in the summer.
There is more evaporation along the west coast in the summer.
A hurricane can impact many of Earth's systems. Which of the following
statements BEST describes how hurricanes directly affect Earth's systems?
A hurricane uses energy from the hydrosphere and transfers the energy into the atmosphere.
A hurricane uses energy from the biosphere and transfers the energy into the cryosphere.
A hurricane uses the geosphere to gain energy and affect the biosphere.
A hurricane uses the energy from the exosphere and transfers it to the hydrosphere.
The lowest areas of the ocean are extremely cold because of the lack of sunlight. Their only significant source of energy is sea vents, openings in the ocean floor that release water that has been heated below. Which process causes the hot water released by sea vents to rise and circulate in the cold ocean water?
conduction
convection
radiation
evaporation
Why does convection cause cool oceans to produce sea breezes?
Cool air rises from the ocean and travels inland.
A. Cool air rises from the ocean and travels inland.
A. Cool air rises from the land and travels to the ocean.
A. Cool air rises from the land and travels to the ocean.
Here is a climate graph of an unknown city that shows precipitation and monthly temperatures. Which description best describes the climate shown in the graph?
cool temperatures and rainy all year
warm temperatures all year with the highest rainfall in July
cold temperatures in December with high rainfall during May
warm temperatures all year with a rainy season from November through March
Air circulates in Earth’s atmosphere. Which of the following is the fundamental cause of air circulation in Earth’s atmosphere?
gravity
ocean currents
the ozone layer
temperature differences
You are swimming at an outdoor pool when you hear thunder in the distance. If you are outside, what would you do?
Seek shelter immediately.
Stay inside the shelter for 30 min after the thunder ends.
Avoid using electrical appliances.
All of the above.
Air rising and sinking in Earth’s atmosphere forms a pattern of smaller convection cells.
These convection cells create both high- and low-pressure belts. Where in the preceding diagram are the low-pressure belts located?
A, D, G
C, D, E
B, D, F
D, E, F, G
Which area would be most likely to experience wildfires:
A dry area with many lightning strikes.
A dry area with few lightning strikes.
A deserted area with many lightning strikes
A wet area with many lightning strikes.
Prolonged exposure to the sun will lead to sunburn:
When the sun’s rays are strongest, between 4 p.m. and 10 p.m.
When the sun’s rays are strongest, between 10 a.m. and 4 p.m.
When you don’t protect your skin from the sun, even on cloudy days.
When you don’t protect your skin from the sun, only on sunny days.
A hurricane is:
A destructive, rotating column of air that has very high wind speeds and that is sometimes visible as a funnel-shaped cloud.
A destructive, tropical low pressure-system with winds blowing at speeds of at least 74 mi/h.
An electric discharge.
The sound created by the rapid expansion of air along a lightning strike.
Look at the two organisms pictured here, a black bear and a polar bear. How are these two organisms classified?
same kingdom, different species
same kingdom, same species
different kingdoms, different species
different kingdoms, same species
Which of the following is the most important characteristic that biologists use to classify animals?
where the animal lives
the animal's body structure
how long the animal lives
population size of animal
Scientists have discovered a organism with the following characteristics:
*multicellular
*needs to eat food
*has a complex nervous system
*is able to move from one location to another
*growth occurs throughout its body
In which kingdom is this organism most likely to be classified?
Animals
Bacteria
Fungi
Plants
Use the table to answer the question.
Based on the table, which taxa do the human and armadillo have in common?
kingdom, order
order, family, genus
family, genus, species
kingdom, phylum, class
Use the dichotomous key to classify the organism shown in the diagram below.
What is the genus and species name of the organism shown in the diagram?
Phoca vitulina
Cystophora cristata
Pusa hispida
Halichoerus grypus
Messages are carried back and forth between the brain and other parts of the body by
respiratory system.
nervous system.
the circulatory system.
digestive system.
Which of the following is a function of the digestive system?
obtaining oxygen
regulating body temperature
breaking down food so the body can use it
guarding against infection and injury
Your brain is a structure composed of different kinds of tissue. What is this kind of structure called?
a cell
an organ system
an organ
a tissue
Which type of human body tissue can contract, or shorten?
nerve tissue
muscle tissue
connective tissue
epithelial tissue
Muscles, bones, and nerves work together to
move materials in your body.
control body functions.
make your body move.
remove waste products.
What structure directs the activities of a cell?
nucleus
cytoplasm
cartilage
cell membrane
A function of the circulatory system is to
provide shape and support for the body.
transport oxygen.
store minerals.
send signals to the brain.
The body part where two bones come together is a
bone
joint
muscle
ligament
After you breathe air into your lungs, oxygen from the air goes into your
heart
muscles
blood
bloodstream
After you breathe air into your lungs, oxygen from the air goes into your
heart
muscles
blood
bloodstream
After you breathe air into your lungs, oxygen from the air goes into your
heart
muscles
blood
bloodstream
Nutrients move into the bloodstream from the digestive system by a process called
elimination
absorption
filtration
digestion
The endocrine system produces chemicals that
begin to function after puberty.
require a system of nerves to control many body activities.
travel to selected locations through tiny tubes.
control both daily activities and long-term changes through hormones.
The process by which an organism’s internal environment is kept stable in spite of changes in the external environment is called
healing
digestion
homeostasis
respiration
Which type of muscle is found only in the heart?
voluntary muscle
cardiac muscle
smooth muscle
soft muscle
The bones that form the backbone are called
vertebrae.
metatarsals.
tibia.
carpals.
How does the skin help regulate body temperature?
by removing wastes from the body
by blocking information about the environment
by enabling excess heat to escape from the body
by allowing body temperature to change when the weather becomes warmer or cooler
The hormones released by the endocrine system are transported through your body by the
digestive system.
excretory system.
circulatory system.
respiratory system.
Which nutrient is needed in order for all body processes to take place?
water
vitamins
carbohydrates
fats
About how much of a human’s body weight is made up of water?
10 percent
25 percent
65 percent
90 percent
About how much of a human’s body weight is made up of water?
10 percent
25 percent
65 percent
90 percent
What structure(s) enable(s) the small intestine to absorb large amounts of nutrients?
villi
pancreas
liver
gallbladder
What organ produces bile?
stomach
small intestine
pancreas
liver
Which of these heart structures prevents blood from flowing backward?
aorta
valve
septum
coronary artery
When the ventricles contract, blood is pumped
out of the heart.
into the heart.
through the septum.
into veins.
In which vessels are materials exchanged between the blood and the body cells?
veins
arteries
capillaries
lymphatic vessels
If a person’s blood lacked platelets, what process could not take place?
carrying oxygen to cells
carrying glucose to cells
clotting of blood
transfusing of blood
Which component of blood carries oxygen to the body cells?
plasma
platelets
red blood cells
white blood cells
The role of the respiratory system is to bring what substance into the body?
water
carbon dioxide
oxygen
red blood cells
Hairlike structures that line the trachea are called
cilia.
mucus.
bronchi.
capillaries.
Which substance derived from protein is removed from the blood in the kidneys and excreted in urine?
hemoglobin
urea
lymph
amino acids
