The diagram shows changes in blood pressure over time. Vasodilation (opening of blood vessels) and vasoconstriction (constrictions of blood vessels) occur because blood -

pressure is controlled by a feedback mechanism

flows through veins and arteries like normal and no problemo

is a necessary component for life to happen

flows through the heart at random and various rates

What would happen if someone applied a bactericide to the soil? Hint "cide" means to prevent from reproducing

Microorganisms like bacteria would die and no usable nitrogen is available for plants.

increase in nitrogen breakdown rate, so plants absorb at a faster rate.

adding nutrients to the soil could increase amount of nitrogen available to plants.

Nitrogen would be blocked from entering the soil, so plants to use cant use it.

A student claims that the flu virus replicates in the air and then infects people and they get sick . Which statement BEST describes the claim?

The claim is false because viruses require host cells in order to replicate.

true because viruses can infect cells without direct contact.

true because viruses replicate within the particles of the air.

false because viruses cannot survive in the air.

Jack and Jill claim that a DNA mutation can code for the same protein because was synthesized before the mutation. Which statement BEST explains their claim the best?

Different codons can be translated into the same amino acid, so some mutations do not affect protein synthesis.

One amino acid substitution does not affect protein synthesis.

Only mutations that occur at the chromosomal level change protein function.

Amino acids have similar functions, so their corresponding proteins are unaffected by mutations.

Danny and Donna were studying and ecosystem. They found a salvia can invasive species and it grows taller than most aquatic plants. Which statement BEST describes how giant salvinia affects a Texas ecosystem?

It inhibits the growth of native plant species.

It promotes the growth of new types of plants.

It increases the stability of the ecosystem.

It provides an energy source for the ecosystem.

Danny and Donna were studying and ecosystem. They found a salvia can invasive species and it grows taller than most aquatic plants. Which evidence supports this

Giant salvinia prevents light from reaching plants that grow underwater.

Giant salvinia is poisonous to other plants that grow on the water's surface.

Giant salvinia produces waste products that are used by other plants.

Giant salvinia releases carbon dioxide that other plants cannot use.

Milk that is sold for human consumption is often pasteurized. During this process, the milk is heated to a high temperature. Which statement describes the main benefit of this process?

C. The process makes the milk less likely to cause illness from bacteria.

A. The process helps mix the milk more uniformly.

B. The process increases the level of nutrients in the milk.

D. The process reduces the number of calories in the milk.

Which statement BEST goes with the statement below? Animal cells use sodium-potassium pump with active transport, which is necessary to move sodium and potassium ions AGAINST their concentration gradient using ATP energy.

Active transport, because it moves ions against their gradient using ATP.

Passive diffusion, as it moves ions along the gradient without energy.

Facilitated diffusion, due to the assistance of protein channels.

Osmosis, due to the movement of water molecules.

Which organisms are most closely related to the mouse to the species least closely related to the mouse?

Donkey, horse, chimpanzee, lamprey

Horse, chimpanzee, donkey, lamprey

Lamprey, donkey, chimpanzee, horse

Chimpanzee, donkey, lamprey, horse

Which statement accurately compares eukaryotic cells and prokaryotic cells?

Eukaryotic cells are more complex than prokaryotic cells.

Eukaryotic cells replicate faster than prokaryotic cells.

Only prokaryotic cells have membrane-bound organelles.

Only prokaryotic cells lack outer membranes and cell walls.

Look at the mRNA sequence then correctly identify the amino acid sequence that will be translated from the mRNA sequence.

Cysteine - Tyrosine - Arginine - Threonine

Threonine - Isoleucine - Serine - Tryptophan

Serine - Methionine - Tyrosine - Tryptophan

Proline - Arginine - Histidine - Arginine

Which statement BEST supports the answer to Part A?

A. Signals are sent to glands that release chemicals into the blood, leading to the increased absorption of nutrients.

B. Signals are sent to reduce the intake of oxygen so that nutrients can be more readily absorbed.

C. Signals increase muscle contractions, reducing water in the body to improve the absorption of nutrients.

D. Signals open pores in the skin so that excess water can be released, making room for the increased absorption of nutrients.

The bar graph shows the average beak depth (distance from the top of the beak to the bottom) of a population of finches. The data were collected in 1976 and in 1978, after a drought occurred in 1977 in the area. Which factor BEST describes the change in this population of finches?

A change in phenotype distribution because of an environmental factor

An increase in resource availability

A change in the reproductive success of one individual bird

A decrease in fitness that increased survival rates

Which statement best explains the result of test tube 3?

A. The enzyme changed the product.

D. The substrate reacted with the enzyme.

Which answer choice correctly identifies a relationship between two of these organisms?

The relationship between the tree and the mistletoe is parasitism.

The relationship between the tree and the mistletoe is commensalism.

The relationship between the birds and the trees is predator-prey.

The relationship between the birds and the trees is mutualism.

Which result is an unintended negative consequence of releasing these beetle species into the environment?

There will be an increase in the available habitat for non-native plant species.

There will be an increase in the population numbers of native beetle species in the habitat.

There will be an increase in competition for food resources among all beetle species in the habitat.

There will be an increase in pollination of native flowering plant species.

As unspecialized cells mature, what controls their development into specific cell types?

The genes expressed within the cells

The rate at which the cells grow

The nutrients available to the cells

Which statement describes the MOST LIKELY reason why the population of dark-colored peppered moths increased?

Dark-colored peppered moths had a genetic variation that provided better coverage from predators in their changing environment.

Light-colored peppered moths were better adapted than dark-colored peppered moths.

Light-colored peppered moths migrated to areas with less pollution.

Changes to the peppered moths' diet caused an increase of pigment that led to a darker color.

What is the significance of chromosome reduction during meiosis?

Chromosome reduction allows for an organism to receive a set of chromosomes from each parent, therefore increasing genetic diversity.

Chromosome reduction makes it possible for more chromosomes to fit inside a cell.

Chromosome reduction prevents errors from occurring during meiosis, therefore decreasing the chances of mutations.

Chromosome reduction increases genetic diversity, making it more likely that crossing-over will occur.

Which of the following is true regarding molecular homologies?

A. Species that evolved from a recent common ancestor have more DNA sequences in common than species that did not evolve from a recent common ancestor.

B. Species that evolved from a recent common ancestor have fewer DNA sequences in common than species that did not evolve from a recent common ancestor.

C. Molecular homologies can predict whether a species will evolve gradually, evolve rapidly, or remain basically unchanged.

D. Molecular homologies can predict how quickly species that have recently evolved from a common ancestor will become extinct.

A Texas horned lizard ( Phrynosoma cornutum ) and a Texas bluebonnet ( Lupinus texensis ) are shown. These two DNA sequences best provide evidence that --

the nucleotides making up the genetic code are common to all organisms

all organisms have an identical genetic sequence

the Texas horned lizard eats the Texas bluebonnet

mutations occur randomly in the genetic code

Review :D

Authored by Christine Teaff

Science

9th Grade

112 covered

Used 17+ times

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Where is the genetic code located?

Ribose sugars in RNA

Phosphates in DNA

Nucleotides in DNA

Exons in RNA

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Based on the data in the table, which food chain depicts a correct flow of energy through the Texas Hill Country habitat?

Frog → Grasshopper → Hawk → Snake

Grasshopper → Frog → Snake → Hawk

Snake → Hawk → Frog → Grasshopper

Hawk → Snake → Frog → Grasshopper

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

This graph reflects the population of cacti in an area. Which claim is supported by the graph?

A. more spines is an adaptation, and it increases reproductive fitness.

B. more spines is an adaptation, and it decreases reproductive fitness.

C. more spines is not an adaptation, and it increases reproductive fitness.

D. more spines is not an adaptation, and it decreases reproductive fitness.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

If both parents are heterozygous for both traits, what would be the genotype of an offspring with straight hair and the ability to idenify different tastes on the tasting paper (PTC)? Hair uses the letter A and tasting used the letter B

AaBb

aaBb

Aabb

aabb

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In which part of the cell are these chromosomes replicated during the cell cycle?

Nucleus

Cytoplasm

Mitochondria

Ribosomes

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Look at the picture, what is the BEST way to describe the results?

direction of light is detected by cells on the shoot tips, so the plants respond by producing chlorophyll.

direction of light is detected by cells on the roots, so the plants respond by bending away the light.

direction of light is detected by cells on the shoot tips, so the plants respond by bending toward the light.

direction of light is detected by cells within the roots, and plants respond by bending in the direction of gravity.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

During what cell cycle do these DNA-copying that will most likely have errors?

A. S phase

B. G1 phase

C. G2 phase

D. cytokinesis

E. m phase

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Review :D

Where is the genetic code located?

Based on the data in the table, which food chain depicts a correct flow of energy through the Texas Hill Country habitat?

This graph reflects the population of cacti in an area. Which claim is supported by the graph?

If both parents are heterozygous for both traits, what would be the genotype of an offspring with straight hair and the ability to idenify different tastes on the tasting paper (PTC)? Hair uses the letter A and tasting used the letter B

In which part of the cell are these chromosomes replicated during the cell cycle?

Look at the picture, what is the BEST way to describe the results?

During what cell cycle do these DNA-copying that will most likely have errors?

The diagram shows changes in blood pressure over time. Vasodilation (opening of blood vessels) and vasoconstriction (constrictions of blood vessels) occur because blood -

What would happen if someone applied a bactericide to the soil? Hint "cide" means to prevent from reproducing

A student claims that the flu virus replicates in the air and then infects people and they get sick. Which statement BEST describes the claim?

Access all questions and much more by creating a free account

Popular Resources on Wayground

Discover more resources for Science

What would happen if someone applied a bactericide to the soil?
Hint "cide" means to prevent from reproducing

A student claims that the flu virus replicates in the air and then infects people and they get sick
. Which statement BEST describes the claim?