Lily is learning about the natural world in her science class. She wants to understand how living things are organized, from the largest group to the smallest. Which shows the levels of organization from largest to smallest?

Noah is studying the number of gazelle and lions in the savannah over time, as shown in the illustration below. Which claim is supported by the predator and prey illustration?

Jessica is studying a local forest ecosystem for her biology project. She wants to find out the maximum number of deer that can be sustained by the forest without depleting its resources. The term for this maximum number is _____________.

Kelsey is studying a local ecosystem where owls eat mice and mice eat grass and grains. If the owl population suddenly grows, then most likely

Casper is studying two different areas in a forest. In area A, he observes that life starts on bare rock with no soil, and over many years, different plants and trees gradually appear. In area B, he notices that after a fire, grasses and small plants quickly grow back because the soil is still present, and eventually, the forest returns. What is the main difference between the two ecological concepts Jackson is observing?

Henry is studying an energy pyramid in his science class. He notices that as energy moves from the grass to the rabbits, then to the snakes, and finally to the hawk, some energy is transferred while some is lost at each step. About how much energy is transferred to each trophic level and how much energy is lost?

Liam is studying world population trends for his science project. In 2023, he notes that the current human population is ABOUT 8 billion people. According to the figures below, what type of population growth do humans show and is that type of growth sustainable for the human population (in other words can the human population keep growing like that)?

Zoe and Sam are investigating the relationship between human population density and biodiversity. The amount of forest cover was used as a measure of biodiversity in an area. The students averaged human population density and forest cover from locations with a range of population densities. The graph shows the students’ results. Based on the graph, if the population density increases from 1 to 500 people/km2, the forest cover will likely

Eli is studying how different animals are related by looking at the hemoglobin protein, which helps transport oxygen in red blood cells. He finds a table showing the number of amino acid differences in hemoglobin between humans and three other species. Which statement is supported by evidence in the data table below?

Sereen is studying a chart that compares amino acid sequences in hemoglobin from eight different mammals. She notices that each column in the chart is labeled with a number. What do these numbers represent on the chart?

Hudson is studying a chart that compares the hemoglobin sequences from eight different mammals. The chart uses LETTERS to represent certain components in the sequences. What do the LETTERS represent on the chart below?

Juan Pablo is studying a chart that shows the amino acid sequences in hemoglobin from eight different mammals. What is Juan Pablo comparing on the chart below?

Archer is studying the genetic relationships between different animals for his biology project. He wants to know: In this example, which organism would be MOST related to the human?

A certain species of rabbit exhibits a lethal condition when the individual carries 2 recessive alleles (think naked Mr. Bigglesworth). If a male rabbit is a heterozygous carrier for a lethal recessive disorder, and a female rabbit is also a hybrid for the trait, what are the chances that their offspring will exhibit (show) the lethal condition?

In a forest, a population of rabbits shows differences in fur color, ear length, and running speed. Why is it ADVANTAGEOUS for this population of rabbits to have such variation?

Charli is visiting a natural history museum and sees an exhibit comparing the embryos of different vertebrates, like fish, salamanders, tortoises, chickens, pigs, cows, rabbits, and humans. She reads that embryological comparisons show that:

Matthew is visiting a natural history museum and sees an exhibit comparing the evolutionary relationships between different animals. He wonders: Which two organisms are the LEAST closely related?

Eisley is studying a phylogenetic tree in her biology class. She wonders what this tree shows about the evolutionary relationship between all the organisms in the tree. What does the phylogenetic tree reveal?

During a study at a local farm, Aiden observed a population of bunnies over several generations. He tracked the frequency of two alleles in the gene pool. What happened to the allele frequency of the alleles in the gene pool?

Miles and Boone are breeding rabbits as part of a genetics experiment. Both of their rabbits have the genotype Ff, where the combination ff results in a lethal condition. What fraction of their offspring will exhibit the lethal condition?

Lucy and Audrey are breeding rabbits as part of a science project. They have a pair of rabbits with the genotype Ff (where F represents furred and f represents naked). What are the phenotype ratios for this genetic cross?

Graelyn and Madi are breeding their pet rabbits, both of which have the genotype Ff for fur. What are the genotype ratios for this genetic cross?

In a population of rabbits, some individuals leave behind more living offspring than others, showing a greater reproductive success. These rabbits would be considered to have a high degree of ____________.

In a population of rabbits, natural selection acts on the _____________ rather than on gene combinations that produce that trait.

In a population of rabbits living in a forest, what is the ULTIMATE cause of variation among the rabbits?

Quinne is organizing a massive library of books and wants to categorize them from the broadest group down to the most specific. She wonders: which taxon level would include all levels of classification?

Abigail is exploring a tide pool and discovers an unusual organism attached to a rock. She observes that it is eukaryotic, multicellular, and strictly heterotrophic. The organism filters food from the water around it, lacks cell walls, and remains anchored to the sea floor. Abigail learns that it can reproduce by fragmentation but usually reproduces sexually, and that these organisms are often hermaphrodites, with eggs remaining inside the body while sperm is released into the water. Based on these characteristics, to which kingdom does this organism belong?

Carson is studying a tiny organism he found in the digestive tract of chickens and lizards. He observes that it is strictly unicellular, has cell walls made of peptidoglycan (protein-sugars), lacks a nucleus, and contains circular DNA. He also notices the presence of plasmids, which can help the organism resist antibiotics. Based on these characteristics, to which kingdom does this organism belong?

Kaiya is examining a sample under the microscope in her biology class. She observes that the organism is multicellular, eukaryotic, and has cell walls made of cellulose. She also notes that it is strictly photoautotrophic and will die without a source of carbon, water, and light energy. Which kingdom does this organism belong to?

Jaylyn is organizing her collection of living things and wants to group them so that each group contains only one specific type of organism. At which taxon level would Abigail find that each group includes only one type of organism?

Ruby is observing a sample under the microscope in her biology class. She notices a unicellular organism that has a nucleus, organelles, and performs photosynthesis. The organism also has a flagella, which allows it to swim into the light and evade predators. Based on these characteristics, to which kingdom does this organism belong?

Elliott is a scientist studying organisms that live in extremely salty environments. She discovers a unicellular organism that is prokaryotic and has cell walls without peptidoglycan (protein-sugars). Interestingly, this species can cause waterways to become pink. Based on this information, to which kingdom does this organism belong?

Emily is working in a biology lab and observes the organism shown in the images above under a microscope. She notes that this organism is unicellular, but learns that the kingdom it belongs to also includes multicellular organisms. It is strictly a eukaryotic heterotroph with a cell wall made of chitin. Grace also discovers that these unicellular organisms can reproduce both sexually and asexually. Based on this information, to which kingdom does this organism belong?

Andi is studying how different types of cells are produced in animals. She learns that somatic cells are normal body cells like skin cells and liver cells, while sex cells are the egg and sperm. She discovers that sex cells are only produced in specific locations, but somatic cells are produced everywhere else in the body. In animals, ___________ are produced by mitosis and ________ are produced by meiosis.

Emma noticed that her family members have different eye colors, even though they are all related. What are the different versions of a gene that cause these variations called, and where do they come from?

Cooper is learning about genetics in school. His teacher explains that the sequence (order) of ________ codes for his traits. What is Cooper learning about?

Justine is building a model of a DNA ladder for her science project. She wants to know: what are the sides, the "backbone" of the DNA ladder made up of?

Julianne is helping her younger brother with his biology homework. She shows him the DNA image below and asks, "Do you remember the complementary base pairing rules?

Emme is helping her younger sister with her biology homework. She shows her a diagram of a DNA strand, where one of the bases is labeled 'G'. Emma asks, "According to the complementary base pairing rule, which base should pair with 'G'?" What should G base pair with?

Alyse has two pea plants in her garden. She knows the genetic makeup (genotype) of each plant. What is the relationship between the genotype and the physical appearance (phenotype) of these pea plants?

Cade and his wife are planning to have a child, they are both heterozygous for the trait in the pedigree. The pedigree below illustrates an autosomal recessive inheritance pattern in their family. What is the probability that they will have a child with the recessive trait?

Colt and Gertrude are a married couple. Their family pedigree shows an autosomal dominant inheritance pattern for a certain trait. What must the genotypes of Colt (#1) and Gertrude (#2) be in the first generation and why?

Des and Owen were performing a lab to test the relative rate of photosynthesis in spinach plants. They set-up their experiment like the three cups pictured below, and wanted to know the effect of carbon on the rate of photosynthesis. They repeated this process 10 times and shared their data (the number of leaf chads that rose to the surface/min) with other groups. Why was sodium bicarbonate needed in the leaf lab? THINK ABOUT THE REACTANTS OF PHOTOSYNTHESIS.

Autumn and Makayla were performing a lab to test the relative rate of photosynthesis in spinach plants. They set-up their experiment like the three cups pictured below, and wanted to know the effect of carbon on the rate of photosynthesis. They repeated this process 10 times and shared their data (the number of leaf chads that rose to the surface/min) with other groups. What was the most likely reason the spinach disks start floating to the surface of the water in cup 2?

Jenni and Gabi were performing a lab to test the relative rate of photosynthesis in spinach plants. They set-up their experiment like the three cups pictured below, and wanted to know the effect of carbon on the rate of photosynthesis. They repeated this process 10 times and shared their data (the number of leaf chads that rose to the surface/min) with other groups. Which cup(s) would be the control group(s) for this experiment?

Jacob and Auden were performing a lab to test the relative rate of photosynthesis in spinach plants. They set-up their experiment like the three cups pictured below, and wanted to know the effect of carbon on the rate of photosynthesis. They repeated this process 10 times and shared their data (the number of leaf chads that rose to the surface/min) with other groups. Why didn’t the spinach leaf chads rise to the surface in cup 3?

Cyerra and Taylor were performing a lab to test the relative rate of photosynthesis in spinach plants. They set-up their experiment like the three cups pictured below, and wanted to know the effect of carbon on the rate of photosynthesis. They repeated this process 10 times and shared their data (the number of leaf chads that rose to the surface/min) with other groups. Remember in an experiment a constant are the factors that remain the same between the test subjects. What would need to stay constant in this experiment? (check off TWO that apply)

Britany and Ellie were performing a lab to test the relative rate of photosynthesis in spinach plants. They set-up their experiment like the three cups pictured below, and wanted to know the effect of carbon on the rate of photosynthesis. They repeated this process 10 times and shared their data (the number of leaf chads that rose to the surface/min) with other groups. What is the independent variable in this experiment? (Think about what they are actually testing in this experiment)

Dylan and Micah were performing a lab to test the relative rate of photosynthesis in spinach plants. They set-up their experiment like the three cups pictured below, and wanted to know the effect of carbon on the rate of photosynthesis. They repeated this process 10 times and shared their data (the number of leaf chads that rose to the surface/min) with other groups. What is the dependent variable in this experiment?

What is the definition of 'Biosphere'?

What is the definition of 'Biome'?

What are examples of things that prevent populations from growing like disease, predators, and competition, and depend on how big the population is?

What are examples of things that limit a population like drought and floods, but do not depend on how big the population is?

What is the gradual change that starts from bare rock and once soil develops by pioneer species, leads to a climax community?

What is it called when communities or ecosystems that already have soil gradually regrow after an event like fire or flooding?

What is the maximum number of individuals of a species that an environment can support called?

Which graph depicts exponential growth in a population?

What is a community?

______(A)______ is evidence that supports the theory of evolution. An example would be looking at the forelimbs of vertebrates like birds and alligators. The wing of a bird and the foreleg of an alligator have the same structure and are considered_____(b)_______structures.

Which of the following is contributing to an INCREASE in carbon dioxide in the atmosphere?

The main human activity that releases greenhouse gases is

What are examples of renewable energy sources?

What are examples of non-renewable energy sources?

In the 1800's why did CO2 levels increase significantly?

Viruses can be treated with antibiotics.

Bacterial infections can be treated with antibiotics.