5B: When a stem cell divides, it produces two daughter cells. One daughter cell will remain a stem cell, while the other daughter cell will differentiate into a specialized cell. Which factor will most directly determine what type of specialized cell will be produced?

The number of chromosomes that are replicated

7D: Blue flying fish live in the upper layers of the ocean. Blue flying fish have enlarged pectoral fins that enable them to glide for 400 meters above the ocean surface and appear to fly. Which statement best describes how natural selection led to enlarged pectoral fins in blue flying fish?

Fish with enlarged pectoral fins were able to glide out of the ocean to escape predators, increasing their fitness.

Fish were able to glide out of the ocean and into other bodies of water to mate with other species

Fish were able to live both on land and in the water as a result of their larger pectoral fins.

Fish changed their DNA to express enlarged pectoral fins, changing the allele frequency of the population.

5A: Scientists determined the total mass of DNA from a sample of animal cells. The masses of equal numbers of cells were taken during three different stages of the cell cycle. Stage I contains cells massed during G1 of the cell cycle. Which statement best describes the cells during Stage II?

The cells have replicated their DNA, but have not completed mitosis and cytokinesis.

The cells have completed mitosis and cytokinesis without replicating their DNA.

The cells have replicated their DNA and completed mitosis and cytokinesis.

The cells have temporarily exited the cell cycle without replicating their DNA.

7E: Green anoles are lizards that can change their skin color rapidly in response to various stimuli. This adaptation is the result of —

beneficial traits passed from parents to offspring

selective breeding of lizards by humans

geographic isolation that prevented genetic mutation

environmental pollutants that changed their genotype

12A: Leaf-cutter ants harvest leaves and carry them to fungi that convert plant material into a usable form for the ants to digest. The fungi depend on the leaves for nutrients. The ants also produce an antibiotic on their bodies that helps protect the fungi from harmful bacteria. Which of these explains the relationship between the leaf-cutter ants and the fungi?

Mutualism, because both the ants and the fungi benefit from each other

Predation, because the ants feed on the fungi

Competition, because both organisms consume the same resource for energy

Commensalism, because the ants receive energy from the fungi and the fungi are unaffected

8A: Why is it important to assign each organism a scientific name?

Each scientific name applies to only one species, making it universally identifiable to scientists.

Each scientific name allows scientists to better study the behavior of an organism.

The scientific name allows scientists to develop common names for organisms

The scientific name describes how an individual looks relative to others of the same genus.

6G: A cellular process is shown. Which of these is the most likely result of the process shown in the diagram?

Gametes will contain new allele combinations.

Chromosome replication will cease to avoid errors that result in mutations.

Offspring will no longer express traits from previous generations

Chromatids will have less genetic variety.

10B: Students studying the interaction among the reproductive parts of flowering plants make the graphic organizer shown. Which terms best complete the numbered blanks in the flowchart?

(1) petals (2) stigma (3) ovule

(1) filaments (2) petals (3) stigma

(1) petals (2) ovule (3) stigma

(1) filaments (2) petals (3) ovule

6A: What components make up the backbone of a DNA molecule?

Deoxyribose and phosphate groups

Phosphate groups and pyrimidines

4A: A prokaryotic cell and a eukaryotic cell are shown. Which characteristic best distinguishes these cells as either prokaryotic or eukaryotic?

The organization of the genetic material

10A: Which sequence best describes an interaction between the integumentary and excretory systems that helps maintain homeostasis?

Body temperature increases Glands release sweat Body temperature decreases

Heart rate increases Blood vessels constrict Blood pressure increases

Blood vessel is damaged Platelets begin to clump Blood vessel ruptures

Blood sugar levels rise Pancreas secretes insulin Blood sugar continues to rise

6B: Which statement best describes a similarity among trees, cats, and amoebas?

They contain DNA composed of the same four types of nucleotides.

They are prokaryotic organisms.

They are classified as members of the same kingdom

They have genomes that consist of the same number of genes.

12D: Students designed an experiment to model the carbon cycle. The students combined water and carbon dioxide-producing disks in a sealed flask. The flask represented Earth’s atmosphere, and the lamp represented the sun. Their design is shown. Which component can be added to the flask to reduce the concentration of carbon dioxide in the model atmosphere created by the disks?

Plants to absorb carbon in the process of photosynthesis

Bacteria to use carbon during nitrification

Snails to use carbon through cellular respiration

Mushrooms to absorb carbon during decomposition

4B: The graph shows the oxygen consumed by an athlete during different stages of training. Based on the graph, which process is occurring between minute 5 and minute 10?

Mitochondria are using oxygen to produce ATP.

Nuclei are building amino acids for energy storage

Ribosomes are building carbohydrates to increase energy output.

Chloroplasts are using energy to produce oxygen.

8B: The table shows the classification of four mammals found in Texas. Based on this table, which explanation best describes why elk and fallow deer are classified in the same genus?

They are both in family Cervidae and share a more recent common ancestor.

They mate and produce fertile offspring.

They are both in kingdom Animalia and have similar diets.

9A: Which statements best compare a function of proteins and lipids in a human cell?

Proteins catalyze chemical reactions inside the cell. Lipids allow for the transport of certain molecules into and out of the cell.

A Proteins provide energy for cellular processes. Lipids catalyze chemical reactions inside the cell.

Proteins allow for the transport of certain molecules into and out of the cell. Lipids store genetic information for cells.

Proteins store genetic information for cells. Lipids provide energy for cellular processes.

11B: In a recent study, scientists investigated the effects of microorganisms naturally found in the body. They raised mice in two different environments and compared their immune system functions in response to a bacterial infection. Their data are shown. Which conclusion about the microorganisms naturally found in the body is most likely supported by these data?

Microorganisms are important in promoting healthy immune systems

All microorganisms are harmful to the body.

All bacteria in the body increase the effectiveness of the immune system.

Bacteria that cause infections decrease the number and variety of immune cells in the body

6E: Which statements explain how a mutation in a somatic cell is different from a mutation that occurs in gametes?

Somatic cell mutations are generally not passed to offspring. Gamete mutations are usually passed to offspring

Somatic cell mutations occur in cells that give rise to gametes. Gamete mutations occur in cells that result in apoptosis.

Somatic cell mutations are maintained in the gene pool. Gamete mutations are expelled from the gene pool

Somatic cell mutations will not be expressed by the individual that contains the mutation. Gamete mutations will be expressed by the individual.

5C: Normal cells have a contact inhibition feedback mechanism that prevents the cells from replicating when other cells are touched. A diagram of cells with contact inhibition and cells without contact inhibition is shown. Which statement best describes what will happen to cells in an organism that lack contact inhibition?

The cells will continue to grow, causing a tumor in the body.

The cells will replicate normally, replacing body cells that die

The cells will replicate until the food supply for each cell is used, causing each cell to die.

The cells will stop replicating once one layer is produced, as other body cells will crowd them out.

7F: Cross-pollination of flowers from different populations of the same species will most likely result in —

gene flow as new alleles are introduced

evolution of a different species as alleles mix

hybrid sterility as gametes from different individuals are incompatible

a decrease of genetic variation among individuals

11B: After a wheat field is cleared, wild grasses and weeds begin growing. This process is considered —

secondary succession because soil is already present

primary succession because pioneer species appear

primary succession because there are no large trees

secondary succession because the field contains inorganic matter

9B: A model of two structures that perform cellular processes is shown. What are the products of the cellular processes in these organelles?

I: carbon dioxide and water II: glucose and oxygen

I: glucose and carbon dioxide II: oxygen and water

I: carbon dioxide and oxygen II: glucose and water

I: oxygen and glucose II: water and carbon dioxide

12E: During an extended dry season in an area, the majority of the ground cover dried up. Which description best explains how this would affect the ecosystem in that area?

The ecosystem would become less stable because less energy would be available to it from the decrease in producers.

The ecosystem would become less stable because the ranges of many organisms would expand and overlap.

The ecosystem would become more stable because there would be less competition among canopy plants.

The ecosystem would become more stable because organisms in higher trophic levels would be able to find prey more easily.

10B: Water, sugar, and other important nutrients need to be transported from one part of a plant to another. Which statement correctly describes the interaction of the root and shoot systems during nutrient transport?

The roots take in water and the leaves produce sugar that are transported to the rest of the plant through vascular tissues.

The leaves take in water and sugar, which are then transported to the rest of the plant through vascular tissues.

The roots take in water and sugar, which are then transported to the rest of the plant through vascular tissues.

The leaves take in water and the roots produce sugar that are transported to the rest of the plant through vascular tissues.

6D: E. coli has three genes that each code for different enzymes that break down lactose. Scientists conducted investigations about the production of these enzymes using samples of E. coli. Their results are shown in the table. Which conclusion about the production of the enzymes can be determined by analyzing the scientists’ results?

Gene expression for the enzymes was controlled by the presence of lactose.

Gene expression for the enzymes was controlled by the temperature of lactose.

The genes for the enzymes were expressed in equal amounts during both experiments.

The genes for the enzymes were mutated before being expressed by the presence of lactose.

7E: Most animals avoid eating monarch butterflies due to their bad taste. Viceroy butterflies look very similar to the monarchs. Which of these best explains how the viceroy butterfly benefits from looking like the monarch butterfly?

Viceroy butterflies are able to deter predators in the same way as the monarch butterflies.

Viceroy butterflies are able to reproduce with the monarch butterflies.

Viceroy butterflies are able to follow the migratory patterns of the monarch butterflies.

Viceroy butterflies are able to find additional sources of food used by the monarch butterflies.

10C: Which sequence represents the levels of organization found in a multicellular organism, from smallest to largest?

Cell --> tissue --> organ --> organ system

Organ system --> organ--> tissue --> cell

Tissue --> organ --> organ system --> cell

Cell --> organ system--> organ--> tissue

2022 Biology STAAR

Quiz

•

Biology

•

9th Grade

•

Practice Problem

•

Hard

•

NGSS

MS-LS2-1, MS-LS2-3, MS-LS2-4

+19

Standards-aligned

Diana Alvarez

Used 218+ times

FREE Resource

50 questions

Show all answers

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

8B: A dichotomous key of different mollusks is shown. Which mollusk moves by jet propulsion and does not have an external shell?

Squid

Slug

Nautilus

Snail

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

4C: Which statement best describes how a virus replicates?

A virus divides into two identical virus particles before infecting the host cell

A virus enters a host cell and uses the materials from the host cell to produce new virus particles

Multiple virus particles fuse and form a large particle that breaks apart, releasing new virus particles.

Multiple virus particles break down in component parts, which then reassemble into new copies of the virus.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

10A: Biting flies can transmit diseases and cause loss of blood for animals in nature. Horses have developed behaviors to repel biting flies such as ear twitching, head tossing, leg stomping, and tail swishing. Which statement best describes the interaction between body systems that allows horses to repel biting flies?

The nervous system senses the biting flies and sends a signal to the muscular system to move.

The circulatory system senses the biting flies and sends a signal to the nervous system to move.

The muscular system senses the biting flies and sends a signal to the integumentary system to move.

The integumentary system senses the biting flies and sends a signal to the circulatory system to move

Tags

NGSS.MS-LS1-3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

12C: Oil spills in the ocean affect marine food webs. Animals that are initially affected by oil spills include sea otters, seabirds, and other organisms that spend most of their time on the ocean surface. Based on the food web, how would a significant decrease in the sea otter population due to an oil spill most likely affect this ecosystem?

The sea urchin population would increase causing the kelp population to decrease.

The fish population would increase in response to the changes in the mussel population.

The mussel population would increase in response to the changes in the algae population.

The killer whale population would increase causing the fish population to decrease.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

6E: Which of these shows an example of an insertion mutation?

Tags

NGSS.MS-LS3-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

12C: In a Central Texas grassland, the producers incorporate 12,000 kJ of energy from the sun into their tissues. About how much energy would be incorporated into the tissues of herbivores?

12,000 kJ

1,200 kJ

10,800 kJ

1,080 kJ

Tags

NGSS.MS-LS2-3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

10B: Positive thigmotropism is a response in plants in which they move and grow toward an object the plant comes into physical contact with, usually curling around the object. This response of the shoot system benefits the plant by allowing the plant to —

produce more pollen for pollinators

take in more carbon dioxide to convert into glucose

absorb more water to transport to the leaves

reach more sunlight for photosynthesis

Tags

NGSS.MS-LS2-1

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2022 Biology STAAR

50 questions

8B: A dichotomous key of different mollusks is shown. Which mollusk moves by jet propulsion and does not have an external shell?

4C: Which statement best describes how a virus replicates?

6E: Which of these shows an example of an insertion mutation?

12C: In a Central Texas grassland, the producers incorporate 12,000 kJ of energy from the sun into their tissues. About how much energy would be incorporated into the tissues of herbivores?

10B: Positive thigmotropism is a response in plants in which they move and grow toward an object the plant comes into physical contact with, usually curling around the object. This response of the shoot system benefits the plant by allowing the plant to —

6F: A model of the genetic control of coat color in rabbits is shown. Which Punnett square represents a cross that would produce albino offspring?

5B: When a stem cell divides, it produces two daughter cells. One daughter cell will remain a stem cell, while the other daughter cell will differentiate into a specialized cell. Which factor will most directly determine what type of specialized cell will be produced?

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