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- Q 1/40Score 0
A photograph of a litter of six-week-old bulldog puppies shows that the puppies are not identical.
Even though these puppies have the same parents, they do not all look alike because —
29some of the puppies have genetic material from only one of the parents
each puppy has a different combination of genetic material as a result of sexual reproduction
all the puppies developed from the same fertilized egg
they were produced by asexual cloning
- Q1
A photograph of a litter of six-week-old bulldog puppies shows that the puppies are not identical.
Even though these puppies have the same parents, they do not all look alike because —
some of the puppies have genetic material from only one of the parents
each puppy has a different combination of genetic material as a result of sexual reproduction
all the puppies developed from the same fertilized egg
they were produced by asexual cloning
30s - Q2
Sodium and lithium have similar chemical properties. What characteristic of these elements explains why they are chemically similar?
Their atoms have the same number of energy levels.
Their atoms both have more neutrons than protons.
Their atoms both have one valence electron.
Their atoms contain equal numbers of protons and electrons.
30s8.5b - Q3
Hikers look at a topographic map of an area named Green Peak. The Green Peak area is made up of only limestone rock. The map is shown.
Which location around Green Peak is likely to experience the most erosion over time?
Location W, because location W has the gentlest slope
Location Z, because location Z is the flattest slope
Location Y, because location Y has the steepest slope
Location X, because location X is near the bottom of a slope
30s8.3b - Q4
A student was given this partial dichotomous key and asked to determine in which of five orders the adult insect shown belongs.
Based on the dichotomous key, in which order does the insect belong?
Diptera
Zoraptera
Isoptera
Ephemeroptera
30s8.2e - Q5
The diagram shows a model of an atom. The model contains three different subatomic particles. Particles X and Y are inside the nucleus, and particle Z is outside of the nucleus.
Which statements best describe the charges on the particles in this model?
Both particles X and Y have a positive charge.
Particle Z has a negative charge.
Both particles X and Y have a negative charge.
Particle Z has a positive charge.
Either particle X or particle Y has a negative charge.
Particle Z has a positive charge.
Either particle X or particle Y has a positive charge.
Particle Z has a negative charge.
30s8.3b - Q6
A photograph of a bird perched on a fence post is shown.
Which description best identifies the action-reaction pair between the bird and the fence post?
Action: The force of the bird on the fence post
Reaction: The force of the fence post on the bird
Action: The force of the fence post on the bird
Reaction: The force of the bird on the wires
Action: The force of the wires on the fence post
Reaction: The force of the fence post on the bird
Action: The force of the bird on the wires
Reaction: The force of the wires on the fence post
30s8.6c - Q7
Farmers can best reduce negative effects on the water quality of nearby streams and lakes by planting crops that —
need less solar energy
produce less oxygen
produce less carbon dioxide
need less fertilizer
30s - Q8
Buffelgrass is an invasive species of grass from Africa that outcompetes native Texas grasses for space and water. Which long-term change to a Texas grassland would most likely occur due to the introduction of buffelgrass?
Buffelgrass offspring will develop traits like those of other invasive species.
Buffelgrass offspring will develop traits like those of native grasses.
The population of native grasses will decrease.
The population of native grasses will increase.
30s8.2e - Q930s8.2e
- Q1030s8.2e
- Q11
Students collected data on five elements. Their data are shown in the table.
Which element has the same number of energy levels as lithium?
Potassium
Beryllium
Sodium
Magnesium
30s8.2d - Q1230s8.3b
- Q13
Oxygen and oxygen-containing compounds are involved in many different reactions. Which balanced equation represents a reaction that involves 14 atoms of oxygen?
30s8.3b - Q14
Two plant species that grow in the same area are shown.
Which statement best explains a difference between Plant 1 and Plant 2?
Plant 2 obtains more sunlight because of its root surface area and root depth.
Plant 1 obtains more sunlight because of its root surface area and root depth.
Plant 2 obtains more water from the soil because of its root surface area and root depth.
Plant 1 obtains more water from the soil because of its root surface area and root depth.
30s8.3a - Q15
A Texas Gulf Coast energy pyramid is shown with representative organisms at each trophic level.
Which statement best describes the flow of energy through this pyramid?
The trophic level represented by redfish and flounder receives energy directly from the secondary consumers.
The trophic level represented by wire grass and phytoplankton receives energy directly from the primary consumers.
The trophic level represented by shrimp and copepods receives energy directly from the tertiary consumers.
The trophic level represented by catfish and gobies receives energy directly from the producers.
30s8.2c
