Biología
Biología celular, genética, ecología y fundamentos de ciencias de la vida.
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question 18 of 25 which statement best describes the results of natural…
C. The most well - adapted organisms pass on their traits to offspring.
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question 17 of 25 a savanna is an ecosystem characterized by dense gras…
A. Migrating to other areas during dry seasons
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why did president theodore roosevelt use the roosevelt corollary in the…
Roosevelt was afraid European countries would take action against the Dominican Republic if it did not pay its debts.
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question 16 of 25 pacific salmon adults die after they spawn. which sta…
B. Spawning increases the chances that more offspring will survive.
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a skin cell should generate an exact copy of itself. through which proc…
mitosis
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question 15 of 25 island foxes are small mammals that live on an island…
C. Environmental changes are likely to wipe out the population because it lacks genetic variation for natural selection to act on.
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question 14 of 25 which sentence describes an individual behavior? a. a…
B. A flamingo cleans its feathers.
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question 13 of 25 a fish species with little diversity exists in a sing…
B. The fish species will go extinct.
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what would be the main problem with reproduction if meiosis did not tak…
Fertilization would result in a zygote with twice as many chromosomes as the parents.
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question 12 of 25 scientists sampled a habitats peppered moth populatio…
B. The proportion of dark - colored moths increased because soot pollution darkened the bark of trees in the habitat.
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a cell undergoes cytokinesis after meiosis i. what step happens next? p…
Prophase II
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question 11 of 25 sea turtles spend their lives in the ocean. they only…
B. The population will have more female turtles than male turtles.
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what occurs after cytokinesis is completed at the end of meiosis? four …
Four haploid cells are formed.
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what do r - selected species rely on for their survival? huge numbers o…
huge numbers of offspring
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question 10 of 25 which factor has the greatest impact on the survival …
B. The amount of diversity in the species
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what kind of population growth rate do k - selected species typically h…
slow growth
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question 9 of 25 the macaroni penguin, shown here, is a flightless bird…
B. Denser, more waterproof feathers that provide warmth
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5 multiple choice 20 points construct an explanation predicting how inc…
The ecosystem will destabilize; the combination of pollution and drought limits resources and directly harms species lacking specific adaptations, causing the food web to collapse.
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question 8 of 25 african elephants have few predators other than lions …
B. The tuskless elephants will be more likely to survive and produce offspring that are also tuskless.
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which term describes species that produce many offspring quickly with l…
r - selected species
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3 multiple choice 20 points which of the following is the best example …
3. D. A deciduous tree losing its leaves, which reduces the rate of photosynthesis. 4. B. Absorbing and re - radiating heat back toward the Earth’s surface.
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question 7 of 25 humpback whales work with members of their group to ma…
D. Cooperative hunting
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which of these is an advantage of k - selected species in stable (non -…
high parental care of offspring
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1 multiple choice 20 points what is a common negative effect of environ…
1. Some species may decrease in number or disappear. 2. Recycling and conserving natural resources which helps increase sustainability of natural resources for future generations.
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question 6 of 25 why would a trait for a darker body color in peppered …
A. When the environment is darker, peppered moths that are darker are more likely to survive and pass on their genes.
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question 5 of 25 which statement best describes how group behavior in w…
B. Cooperation supports producing more pups that survive to adulthood.
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choose the correct answer. which reproductive strategy is described bel…
r - selected
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question 4 of 25 three islands have three different habitats. island x …
C. The tortoises had a range of neck length phenotypes that could be inherited. D. Having a longer neck gave some tortoises an advantage when competing for food.
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question 3 of 25 how does swimming in a large group help an individual …
A. It makes it more difficult for predators to catch an individual.
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question 2 of 25 young sea turtles have many natural predators. which a…
D. Producing a large number of eggs
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choose the correct answer. which reproductive strategy is described bel…
K - selected
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question 1 of 25 corals are small animals that live in colonies in the …
C. More corals in the population will have a skeleton with larger holes.
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question 10 of 10 some hares have the same coat color all year long. ot…
C. Hares that grow a brown coat earlier in the spring
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question 9 of 10 which population of organisms is most likely to surviv…
A. A population with a lot of genetic variation
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complete the sentence with the word that best fits the overall meaning …
influence
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question 8 of 10 a beetle species and a mouse species compete for food …
B. The mouse population will grow because of less competition for food.
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question 7 of 10 oak wilt is a fungal condition that affects oak trees.…
B. A high level of diversity in the population
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question 6 of 10 which two sentences describe examples of natural selec…
A. A population of guppies become smaller and faster after a predator is introduced to its creek. D. Dark - colored fur becomes more common in a mouse population after a volcanic …
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flowering time is determined by genes in mustard plants. the graph show…
B. Earlier flowering time is an advantage when the environment is dry.
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question 4 of 10 why did the most common color of peppered moths change…
D. Dark - colored moths were harder to see on soot - covered trees.
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although debate over international affairs would continue, world war i …
1918
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question 3 of 10 how does natural selection influence which traits are …
C. Traits that help organisms survive in their environment are more likely to be inherited.
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question 2 of 10 three islands have three different habitats. island x …
B. The populations are separated by geographic barriers.
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question 1 of 10 guppies are small fish that live in freshwater streams…
B. The colorful variant will be more likely to survive and reproduce, so that variant will become more common. C. The dull variant will be less likely to reproduce, so that varian…
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why did president wilson want the united states to provide leadership a…
He believed the United States would be able to protect world peace.
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question 10 of 10 which two statements correctly describe the role of g…
A. They support the population as a whole by ensuring that at least some offspring survive. B. They increase the chances that an individual will reproduce and pass on traits.
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question 9 of 10 sugar maple trees grow broad, green leaves to capture …
B. One with extreme seasonal changes
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1. a productive cough, fever, and chills in an 80 - year - old patient …
D. pneumonia # 2.
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question 8 of 10 harriss hawks, such as the ones shown here, are the on…
B. Cooperative hunting
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question 7 of 10 when salmon migrate from the ocean to a river, they st…
B. Individual behavioral adaptation
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question 6 of 10 how are group behaviors different from individual beha…
D. Only group behaviors involve multiple organisms cooperating for mutual benefit.
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question 5 of 10 which adaptations would be more advantageous to a dese…
A. Adaptations for storing water
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question 4 of 10 spider - tailed horned vipers have a variety of adapta…
C. Shape of tail
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to keep food safe, you must prevent cross - contamination; prevent time…
Annie left eggs and cream (perishable items) out for too long (time - temperature abuse risk) and used an incorrect thermometer (infrared instead of a probe thermometer) to check …
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question 3 of 10 how does a group behavior of prairie dogs benefit an i…
: C. Many individuals watching for predators and alerting others increases the chances that a single individual will survive. # Brief Explanations: Group behavior means more eyes …
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question 3 of 10 how does a group behavior of prairie dogs benefit an i…
C. Many individuals watching for predators and alerting others increases the chances that a single individual will survive.
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question 2 of 10 which sentence describes an example of the group behav…
D. Caribou run from predators in a large group, with weaker individuals in the center.
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what did president wilsons fourteen points propose about communication …
The world’s leaders should handle disputes openly.
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what best describes the act of advocacy? calling attention to a particu…
supporting a meaningful action or cause
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question 1 of 10 which three structural adaptations help unicellular or…
A. Pseudopods, B. Cilia, D. Flagella
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in cell reproduction, there are 2 cells present after day 1; 4 after da…
The exponential equation is \(y = 2^{x}\) and the number of cells on the 20th day is \(1048576\).
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in cell reproduction, there are 2 cells present after day 1, 4 after da…
The number of cells on the \(200^{th}\) day is \(2^{200}\)
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question 25 of 25 which phrase correctly identifies the role of mrna? a…
B. Carrying the genetic code from DNA to the cytoplasm for translation
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this energy source is used to transform carbon dioxide and water into c…
1. Sunlight 2. Cellular respiration 3. Mitochondria 4. Photosynthesis 5. Chloroplasts
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question 24 of 25 which sentence describes how the structure of dna det…
A. A gene is a sequence of nucleotides in DNA that codes for a protein with a specific function.
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question 23 of 25 in e. coli bacteria, the lac operon contains genes th…
B. The genes are turned off when lactose is unavailable in the bacteria's environment.
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question 21 of 25 what is the final step in translation? a. the new str…
C. The ribosome releases the mRNA after reaching a stop codon.
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compare the lines on this population growth graph. which has a higher r…
The green line has the highest rate of growth.
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choose the correct answer. what type of growth is represented by the gr…
Exponential (J - curve)
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question 20 of 25 which mutation would likely have little to no effect …
B. A substitution that replaced an amino acid with one that has similar properties
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35. a city planner is reviewing an age structure diagram for her commun…
Predict labor force size, future resource needs, and development challenges.
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question 19 of 25 prokaryotic cells regulate gene expression by control…
A. Transcription
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choose the correct answer. what would happen to the largemouth bass pop…
As they are not primary food sources and at the top of the food chain, the impact would be minimal.
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how can health factors that are capable of influencing people both nega…
internal; external
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examine the model for two cellular organelles found in many eukaryotic …
A. Letter Z could be carbon dioxide because it is produced in cellular respiration and is a reactant of photosynthesis. B. Letter Z could be a water molecule because it is produce…
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question 18 of 25 the gene for flower color in a certain species of pla…
A. 0.50
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what does the dotted red line on the graph represent? k (carrying capac…
A. K (carrying capacity)
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question 17 of 25 which sentence is true about the allele frequencies i…
B. They always add up to 100%.
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what would happen to the population of largemouth bass if there is a su…
Due to the lack of primary food sources, a die - off would likely occur.
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question 16 of 25 which sentence describes an insertion mutation? a. on…
B. One or more nucleotides are added to a sequence.
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34. a fruit grower notices that a few years after applying the same pes…
The pest population grows extremely large because of excessive application of chemicals.
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when a population grows rapidly and then the growth slows, it experienc…
A. S - curve
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question 15 of 25 hemoglobin is a protein involved in oxygen transport.…
D. Their structures are based on the amino acid sequences in their polypeptides.
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choose the correct answer. when a population grows quickly, it experien…
J - curve
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question 14 of 25 which type of biomolecule is shown in the model? a. a…
A. A polypeptide chain
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32. a demographer is making projections about global population trends …
Less - developed countries
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question 13 of 25 what is the role of enhancers during the transcriptio…
C. To increase the rate of transcription
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choose the correct answer. the carrying capacity of a population is the…
A. \( K \)
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question 12 of 25 what is one way gene expression is regulated after tr…
D. Chemical changes determine whether polypeptides combine or are broken down.
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question 11 of 25 which two characteristics describe the somatic cells …
A. They are specialized to carry out specific functions. B. They all contain identical DNA.
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2.11 unit test: the chemistry of life mid - unit - part 1 due: fri oct …
lipid
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question 10 of 25 which sentence describes inherited mutations? a. they…
C. They can increase a population's genetic variation but may introduce a harmful condition.
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question 9 of 25 immunoglobulin is a specialized protein that binds to …
C. Ribosome
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question 8 of 25 how does fertilization increase genetic variation amon…
A. It combines gametes from different individuals to produce unique sets of traits.
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29. solubility is an important factor to consider when examining the mo…
Oil - soluble compounds accumulate in the body.
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question 7 of 25 the histogram on the left shows a populations distribu…
A. Directional
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question 6 of 25 which statement describes dna? a. it is made up of lon…
B. It is used as a template for RNA, which is then translated to form proteins.
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question 5 of 25 which sentence describes how crossing over increases g…
D. It increases the number of possible allele combinations that can occur on a single chromosome.
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question 4 of 25 why might a population fail to experience much variati…
A. The environment remains stable.
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question 3 of 25 exposure to a mutagen causes a person to develop a tum…
D. The tumor was caused by a mutation in a somatic cell and cannot be inherited by future generations.