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Science exam study set
Terms in this set (67)
Why is the ability to move important to animals?
it helps them find food
What form of energy is stored in food?
energy in molecules
How do organisms get the energy they need?
Plants use energy from sunlight to make sugar molecules. Animals get energy from eating other organisms.
Dylan drew a diagram showing that certain organisms eat other organisms. The diagram included a caption stating that the amount of available energy decreases with each organism that is eaten. How is this explained by the law of conservation of energy?
Some of the energy is used for life processes.
Worms break down dead plants in the soil to release nutrients. Which property of nutrients shows that they are matter?
Nutrients have mass.
Some consumers, such as many flying insects, need large amounts of energy to grow and move from one place to another. How do consumers get energy to function?
Consumers obtain all of their energy by eating other organisms.
What happens to the food after the snail eats it?
The snail breaks apart the food molecules to get energy.
The snail uses the matter in the food to grow.
Why do you think the starch molecule shown is a good source of energy for an organism?
The many bonds in the starch molecule store energy.
Plants get energy from?
The plants store the energy in the ----- between atoms.
Matter is anything that has mass and takes up space.
A molecule is made up of two or more atoms held together by chemical bonds. Which elements below would be considered a molecule?
The organism that uses energy and matter from the environment to make its own food is called?
The organism that gets energy and matter by breaking down the remains of other organisms that have died are called?
The organisms that gets energy and matter by eating other organisms is called?
This organism eats both producers and consumers and is called?
This organism feed on other animals only
Organisms that are animals and eat producers to get energy.
Which choice below shows the matter that makes up the giraffe in order from smallest to greatest?
atoms → molecules → cells → giraffe
In addition to chemotrophs, a variety of other organisms live near hydrothermal vents, including shrimp, crabs, tubeworms, and octopuses. Select the statements below that describe the relationship between matter and energy near deep-sea vents.
Crabs are consumers that get matter and energy from eating other organisms that live near deep-sea vents.
Chemotrophs get matter and energy from the molecules coming out of the sea floor.
Chemotrophs provide most of the matter and energy that is available to the other organisms that live near the deep-sea vent.
Decomposition is carried out by ?
A Carnivore may feed on?
Herbivores, Carnivores, and Omnivores are different types of
humans are considered
What starting materials do plants use to make food?
carbon dioxide and water
What is the source of energy for plant and animal cells?
What are the products of photosynthesis?
glucose and oxygen
Animals breathe in oxygen and breathe out carbon dioxide. Where does the carbon dioxide come from?
it is a product of cellular respiration
What happens to glucose inside a cell during cellular respiration?
The cell uses water to break down glucose.
There is a connection between photosynthesis and cellular respiration. The products from one provide the raw materials for the other. What products of photosynthesis are starting materials for cellular respiration?
glucose and oxygen
Why are animals important to the process of photosynthesis?
Animals release carbon dioxide, which provides the starting materials for photosynthesis.
The tree uses energy from the Sun to produce ------?
Which of the statements are true about the two chemical reactions? Select all that apply. Equation A: 6CO2 + 6H2O + Energy - C6H12O6 + 6O2, Equation B: C6H12O6 + 6O2 - 6CO2 + 6H2O + Energy.
Equation A summarizes photosynthesis, and Equation B summarizes cellular respiration.
The products of Equation A are the reactants for Equation B.
Animals that eat only meat, such as dolphins, do not get much sugar (carbohydrate) from their diets. Select the statement below that best explains how a dolphin gets the energy it needs from its food. *
The dolphin's body is able to break down other carbon-based molecules, such as proteins and fats, to use as an energy source for cellular respiration.
What is the chemical formula for photosynthesis? *
6CO2 + 6H2O + Energy - C6H12O6 +6O2
Which is the chemical formula for cellular respiration? *
C6H12O6 + 6O2 - 6CO2 + 6H2O + Energy
Which organelle does photosynthesis take place in? *
Which organelle does cellular respiration take place in? *
ATP is ? *
Which of the following supplies your body with energy? *
What reactants in cellular respiration are products of photosynthesis? *
Glucose and Oxygen
If plants were removed from an area, which statement below best describes the best outcome? *
CO2 levels would increase
Balance the following chemical equations and choose the right answer. Ca + O2 - CaO *
2Ca + O2 - 2CaO
Cu2O + C - Cu + CO2 *
2Cu2O + C - 4Cu + CO2
2Na + MgF2 - 2NaF + Mg *
Na + Br2 - NaBr *
2Na + Br2 - 2NaBr
The figure shows one type of physical evidence that scientists use to understand Earth's past. Imagine that you found this evidence on a mountaintop. What could you conclude from your discovery? *
The rocks on this mountaintop were once at the bottom of an ocean.
Which best describes a fossil that was discovered in rock at the base of a cliff? *
It is likely older than a fossil discovered in rock at the top of the cliff.
Which is an accurate statement about the fossil record? *
The fossil record represents less than one percent of all of the species that ever lived.
It is rare for the remains of a soft-bodied organism to become a fossil.
Most fossils are found in sedimentary rock.
How does relative dating help determine the age of a fossil? *
It determines whether a fossil formed before or after another fossil.
Juan is studying fossils. His teacher wrote the following statements on the board and asked the students to put them in the correct order to describe how fossils are formed. 1. Layers of sediment bury the entire skeleton. 2. Sediment builds up and turns to rock. 3. An organism dies, and its body begins to decompose. 4. Sediment begins to cover the organism's skeleton. Which is the correct order of events for fossil formation? *
3, 4, 1, 2
The oldest layers were laid down *
The oldest layers would be found at *
the bottom of the rock layers
A scientist compares a fossil to a very similar living organism. The comparison gives the scientist information about what the fossil organism likely ate and the kind of environment it lived in. Which scientific concept is the scientist using? *
the principle of uniformitarianism
Suppose you are on a class field trip to collect fossil shark teeth from a sandy beach. Which of the following tools would be the best for your teacher to take along for you to use to collect the shark's teeth? Select all that apply. (Two Answers) *
hand trowel (a small shovel with a pointed tip)
hand sieve (separates particles of different sizes)
A fossil was found in a sedimentary rock layer. The igneous layer directly above the sedimentary layer was analyzed for radioactive uranium. You found equal amounts of uranium and lead in the igneous sample. This means that the absolute age of the igneous layer is 704 million years, and the age of the fossil in the sedimentary rock layer below is older than 704 million years. *
The geologic time of Earth spans more than 4.5 billion years. Let a football field, which is 100 yards long, model the number of years since Earth formed about 4,500,000,000 years ago. Using this data, how many years of Earth's history would each yard line on the football field represent? *
The law of superposition states?
that in a sequence of undisturbed sedimentary rocks, the oldest layers are at the bottom and the youngest ones are at the top.
Scientists know the rate at which particular radioactive particles decay. The time needed for half of a sample of a radioactive substance to decay is called the half-life. Because each radioactive substance decays at a specific, constant rate, each radioactive substance has a specific half-life. The half-life of radioactive uranium is? *
704 million years
Alleles are ____________.
different kinds of genes
Dominant Allele will always be the _________________.
upper case letter
Recessive Allele will always be the _________________.
lower case letter
Homozygous dominant will be ______________________.
two upper case letters together
Heterozygous is an ___________________________.
upper case and lower case letter together
Homozygous Recessive is _______________________.
two lowercase alleles together
______________ is the alleles for the inherants
_______________ is what the allele codes for, _________________________.
Phenotype, (BB=Brown Eyes, Bb=Brown Eyes, bb=Blue Eyes)
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