DE_LE_Unit2 Formative

Last updated almost 3 years ago

30 questions

2.1 Energy of Life

2.2 Photosynthesis

2.3 Cellular Respiration

2.4 Nutrient Cycles

2.5 Mechanical and Chemical Weathering

2.6 Erosion and Deposition

DE_LE_Unit2 Formative

Last updated almost 3 years ago

30 questions

2.1 Energy of Life

Classify the following as either carbohydrates or other organic molecules by dragging them to the correct box.

glucose
starch
albumin
cholesterol
glycogen
fructose
testosterone

Carbohydrates
Other organic molecules

If a female lion runs a distance of 469.2 meters while chasing an antelope, how many millimeters did she run?

The two main processes organisms use to make energy are photosynthesis and cellular respiration. Match the following terms or processes with the best definition.

Draggable item		Corresponding Item
chloroplasts		where cellular respiration takes place
mitochondria		where photosynthesis takes place
carbon dioxide		the first stage of respiration
glycolysis		taken in through leaves
oxygen is absent		lactic acid or alcohol from pyruvate
oxygen released		the first stage of respiration

The conversions of energy involve many chemical reactions taking place within an organism or the environment. What is the term for the energy needed to begin one of these reactions?

Life requires energy to exist. Connect the life processes to the reasons they consume energy.

Draggable item		Corresponding Item
Digesting food		Polymerization of nucleic acids require energy to break chemical bonds
Breathing		Production of digestive enzymes requires energy to break bonds in proteinst
Replication of DNA		Contraction of the diaphragm uses energy to move muscle fibers
Dreaming		Active transport uses energy to produce chemical gradients across neurons

A rollercoaster car moves from left to right as shown. The car starts out with high velocity as it is launched at the gate and no additional energy is provided during the part of the roller coaster shown. Determine whether the car is gaining or losing kinetic and potential energy at each part of the rollercoaster.

Draggable item		Corresponding Item
Second Law of Thermodynamics		Energy cannot be created nor destroyed
Third Law of Thermodynamics		Entropy of a system cannot decrease
First Law of Thermodynamics		The point at which the thermal energy of molecules is zero is when atoms have ceased moving.

Classify the following statements for if they best fit an endergonic reaction or an exergonic reaction.

Require a net input of energy
Release energy into the surroundings
Change in free energy is positive
Change in free energy is negative
Breakdown of food molecules
Building ATP

Endergonic Reaction
Exergonic Reaction

Electrons can be moved from a lower energy state in one atom to a higher energy state in another atom; this serves to _______ energy. Electrons can also move from higher energy states in one atom to lower energy states in another, thus _______ energy. The movement of electrons from one atom to another changes the _______ number of both atoms. Any chemical reaction that changes the oxidation number of atoms is called a _______ reaction.

The term redox is a combination of the terms reduction and oxidation. _______ is the gain of electrons, which decreases the _______ state of the atom or ion.

Determine whether each change in the fast carbon cycle would increase or decrease atmospheric carbon. Drag each change into the correct row.

less solar energy
more green plants
less water
fewer decomposers
more animals

Increase Atmospheric Carbon
Decrease Atmospheric Carbon

2.2 Photosynthesis

Classify some of the following as a product or a reactant in the process of photosynthesis.

carbon dioxide
oxygen
glucose
water

Reactants
Products

_______ in a plant absorbs and transfers energy from most visible waves of light from the _______, except green and yellow.

Read the terms below. Read the possible definitions and separate the incorrect definitions from ones that correctly relate to the terms. Connect the definition to its correct term.

Draggable item		Corresponding Item
nutrients		a substance essential for the growth and maintenance of life
autotroph		primary pigments responsible for the absoption of light energy in the process of photosynthesis
carbon dioxide		a conversion of light energy into chemical energy
chloroplasts		a reactant in the process of photosynthesis
chlorophyll		a series of metabolic processes where chemical energy is released to produce ATP
cellular respiration		an organism capable of synthesizing its own food from inorganic sources
photosynthesis		the location in plants that holds chlorophyll and where photosynthesis takes place

Determine whether each statement describes photosynthesis or cellular respiration or both.

Reactions include C6H12O6 (glucose) and H2O (water)
Requires oxygen as a reactant
Requires carbohydrates as a reactant
Requires carbon dioxide as a reactant
Produces oxygen as an end product
Produces carbohydrates as an end product
Produces carbon dioxide as an end product
Involves ATP
Releases energy
Uses energy

Photosynthesis
Both Photosynthesis and Cellular Respiration
Cellular Respiration

Scientists categorize plants into two groups: C3 and C4 species. The C3 species are temperate or cool-season plants. The C4 species are tropical or warm-season plants. Based on the graph below, choose the best words or phrases to complete the summary comparing the data about the two types of plants.

In comparing these two species, photosynthesis increases more rapidly in the presence of carbon dioxide for __________ plants. The C4 species reaches a peak rate of photosynthesis at __________and the C3 species reaches a peak rate of photosynthesis at __________. This means that carbon dioxide concentrations in excess of __________ will not increase the rate of plant growth or carbohydrate production for either species. The tropical C4 species grows more quickly. Since the photosynthesis reaction requires an equal number of CO2 and __________, this is adaptive for tropical environments.

2.3 Cellular Respiration

2.4 Nutrient Cycles

The graph shows the amount of rain that California has received over the past 40 years. Based on this data, predict how changes in rainfall in 2014 would impact organisms in the state.

The precipitation in 2014 was __________ normal. Because organisms in the state are adapted to live in an environment with approximately __________ inches of rain a year, rain conditions in 2014 would probably __________ the chance these organisms will survive.

A carbon atom moves between many different reservoirs as it moves through the carbon cycle. Starting with a molecule of carbon dioxide gas, place these different reservoirs in the order in which carbon would flow through them.

1) Carbon can enter the atmosphere and hydrosphere through burning of fossil fuels and volcanic activity. Weathering of limestone also releases carbon into the atmosphere.

2) Carbon dioxide is pulled out of the atmosphere by plants to be used during __________. Through this process, the carbon is stored in the plant as __________.

3) Plants and animals use the stored carbon during __________to produce energy. A byproduct of this process is __________which is released back into the atmosphere.

4) When organisms __________ carbon is again released into the atmosphere by microorganisms. During this process, carbon is also stored in rocks, such as limestone or coal.

Nitrogen gas can be used directly from the atmosphere by the plants in our ecosystem.

The phosphorus cycle involves the transfer of phosphorus, primarily in what form?

2.5 Mechanical and Chemical Weathering

Match the following terms or processes with the best definition.

Draggable item		Corresponding Item
climate		the breaking down of rocks, minerals, and soil on the surface of Earth
weathering		the movement of rocks, soil, and dissolved material from one location to another
sediment		material that results when rock is broken down into smaller pieces
erosion		the annual average weather conditions in a particular area
landform		a natural feature on the surface of Earth
elevation		the height above sea level

Water’s physical and chemical properties make it an agent of both mechanical and chemical weathering. Which of the following are examples of chemical weathering processes? Select all that apply.

This photo shows a bend in the Colorado River called Horseshoe Bend. Mechanical and chemical weathering have shaped, and continue to shape, this formation. Would the following changes make the weathering of Horseshoe Bend occur more quickly or more slowly?

If a manufacturer let acidic byproducts of fertilizer production enter the river, weathering would happen __________. 
If the region experienced severe winter weather with several freeze-thaw cycles, weathering would happen __________.
If the water level in the river went down due to very little rainfall, weathering would happen __________.
If more trees grow along the river, weathering would happen __________.

2.6 Erosion and Deposition

Match the following agent of erosion with the landscape feature it creates. Some agents may have more than one landscape feature.

Draggable item		Corresponding Item
rivers		sand dune
mass movement		U-shaped valley
glaciers		sea cliffs & barrier island
wind		mud flow
waves		delta, V-shaped valley, canyon

Geologists study erosion to teach us about the past. What type of erosion demonstrates that it can be a process that happens over a long period of time?

Classify each of the following processes as erosion, weathering, or deposition.

Erosion
Weathering
Deposition

Erosion, deposition, and tectonic plate interactions have shaped Earth’s surface. Drag and drop the tiles to show the order of Earth processes that could result in fossils of marine organisms found in high mountains.

Two continental tectonic plates collide near a sedimentary basin.
Sediment accumulates in a low-lying area, burying the remains of some organisms.
Colliding plates push rock that was underwater up into mountain ranges.
Moving water deposits sediment when it slows down.
Running water erodes weathered rocks.
Fossils of marine organisms are found in high mountains.

Drop in the size (mm) of the specific types of sediment. 
Boulder: _________  
Clay: ____________ 
Cobble: ___________ 
Coarse Sand: __________
Fine Sand: _______________   
Pebble: ______________________ 

Engineers have developed many ways to prevent and minimize damage from erosion. Connect each design solution to the situation for which it would be effective. Some situations may have more than one possible solution.

Draggable item		Corresponding Item
		shoreline hardening
		soft stabilization
		beach nourishment & shoreline hardening