Biología
Biología celular, genética, ecología y fundamentos de ciencias de la vida.
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question 7 of 10 what is the most likely reason that a long beak could …
B. The bird could use the beak to crack open nuts.
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question 6 of 10 why are certain traits adaptations in one ecosystem, b…
B. Ecosystems can have different conditions.
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which of the following sources of energy give you only about 15 seconds…
A. Creatine phosphate
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question 5 of 10 how are finches in the galápagos islands a good exampl…
D. Finches have developed many different adaptations.
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which is true about adaptations? a. they are taught by parents. b. orga…
C. Organisms are born with them.
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what question did charles darwin attempt to answer? a. are an offspring…
C. Why do different organisms live in different places?
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why is night vision an adaptation for owls in a desert environment? a. …
C. It allows them to hunt when it is cooler.
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question 1 of 10 which would be an adaptation in a very cold place, but…
B. Fur that blends in with snow
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the phenotype frequency in a population changes after each generation. …
D. Organisms compete for shelter
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what happens when a population is in hardy-weinberg equilibrium? a. the…
B. The distribution of alleles does not change from one generation to the next.
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what was the purpose of hardy and weinbergs work? a. to learn how to co…
C. To determine how allele frequency changes
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a plant has two alleles for color. the red allele is recessive, and is …
A. 0.36
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question 6 of 10 in the hardy-weinberg equation shown below, ( p ) is t…
A. The frequency of the homozygous dominant genotype
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question 5 of 10 what is the term for all the types of alleles that exi…
B. Gene pool
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what specific style of music influenced dance bands?*latin musicbossa n…
Ragtime Pioneering the field of country music
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question 4 of 10 a species of fly has two alleles for the length of the…
C. 0.43
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question 3 of 10 a biologist measures the allele frequencies of pea pla…
D. Tall plants are more likely to survive.
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question 2 of 10 which of these is one of the conditions for hardy-wein…
A. Mutation cannot occur.
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question 1 of 10 a trait has two alleles, represented by p and q. if p …
A. 0.11
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read the question and select the best answer. i am looking at a beautif…
Costa Rica
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question 10 of 10 what is emigration? a. when animals die in an ecosyst…
B. When animals leave an ecosystem
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question 9 of 10 when can exponential growth happen? a. when the death …
C. When there is no competition
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wolves are predators for hares. the wolf population increases. what hap…
B. The death rate of hares increases.
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question 5 of 10 why does competition happen? a. there are limited reso…
A. There are limited resources in an ecosystem
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question 4 of 10 the graph below shows the population of mice in an eco…
A. The birthrate is higher than the death rate.
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question 3 of 10 what is the carrying capacity of an ecosystem? a. the …
D. The largest population that can be supported
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question 2 of 10 why can the removal of one important species affect an…
D. Most ecosystems only have one producer
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question 10 of 10 an oak tree falls in a forest. it kills some ants and…
B. Secondary
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an extreme disturbance happens in an ecosystem. how does an ecosystem c…
C. Biodiversity in the ecosystem increases.
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question 8 of 10 what type of organisms first move into an area after a…
B. Small organisms
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what is the name for a disturbance that harms some organisms, but does …
D. Secondary disturbance
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why does the presence of predators help keep an ecosystem stable? a. th…
B. The predators keep prey populations balanced.
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a nonnative species of ant is introduced into a woodland ecosystem. whi…
B. There is a predator for this ant species.
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why are the tropics the most diverse areas? a. they have no predators. …
C. They have stable temperatures.
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question 3 of 10 which best describes a climax community? a. a vary sma…
D. A very stable community
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what is a nonnative species? a. a species that does not normally live i…
A. A species that does not normally live in an area
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question 1 of 10 two species have the same niche. what is the most like…
C. The other species will become extinct.
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which type of biome is the least productive? a. temperate forest b. tun…
B. Tundra
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question 9 of 10 what is the term for a group of mice that all live in …
B. Population
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what determines whether a benthic zone in a lake will sustain photosynt…
A. How deep the lake is
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4. write a paragraph explaining how energy flows through an ecosystem u…
Energy flows through an ecosystem beginning with producers (e.g., plants) at the first trophic level. They capture solar energy through photosynthesis. Consumers (herbivores, carn…
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3. provide three examples of each: a. abiotic factor: b. biotic factor:
a. Abiotic Factor: Sunlight, Water, Soil b. Biotic Factor: Plants, Animals, Bacteria
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autonomic nervous system organization which innervates target cells or …
Postganglionic neuron
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2. compare and contrast abiotic and biotic factors using the diagram be…
In the "Abiotic" circle: non - living elements (e.g., water, soil, sunlight). In the "Biotic" circle: living elements (e.g., plants, animals, bacteria). In the overlapping area: b…
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where does the cell body of the preganglionic neuron originate? central…
Central nervous system (CNS)
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target organs of the autonomic nervous system autonomic motor neurons d…
skeletal muscle cells
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why is it important that dna is so well organized? because dna contains…
All of these
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how many total chromosomes do humans typically have? 23 2 46 4
46
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where is dna stored in prokaryotic cells? all of these cytoplasm nucleu…
Cytoplasm
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what is a karyotype? a map of the number and appearance of all the diff…
A. A map of the number and appearance of all the different chromosomes in an organism
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what threadlike structure is dna integrated into? karyotype nucleus nit…
Chromatin
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what is dna shaped like? x - ray karyotype circle double helix
Double helix
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which nitrogen base pairs with adenine in dna? uracil thymine guanine c…
B. Thymine
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which nitrogen base is not found in dna? adenine guanine cytosine uracil
Uracil
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which nitrogen base pairs with cytosine in dna? guanine thymine adenine…
Guanine
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the order of what determines what resources are made by the cell? karyo…
Nitrogen bases
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james watson and francis cricks discovery would not have been possible …
A. All of these
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in 1938, what did the scientific community understand about dna? neithe…
Neither its structure or its function
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who used x - rays to take unique pictures of dna, which were eventually…
Rosalind Franklin
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who accidentally discovered dna in the 1860s? friedrich miescher oswald…
Friedrich Miescher
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who discovered the function of dna in 1944? oswald avery rosalind frank…
Oswald Avery
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what is dna? the \powerhouse\ of the cell a process by which a cell pin…
The genetic blueprint, or instructions, for our cells.
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why is g1 important? without this process, cells would never completely…
Without this process, you'd end up with two tiny and ineffective cells.
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what is the s phase? the phase of the cell cycle where cells grow and p…
The phase of the cell cycle where cells synthesize, or create, an identical copy of their DNA
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what is mitosis? a state where cells perform their normal functions wit…
The phase of the cell cycle where a cell actively divides into two identical cells.
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cancer occurs when... cells die. cells miss their cue to exit the cell …
cells miss their cue to exit the cell cycle.
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what is the g1 phase? the phase of the cell cycle where cells continue …
The first phase of the cell cycle where cells grow and prepare to divide.
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list the steps of the cell cycle in the correct order. s, g1, g2, m g1,…
G1, S, G2, M
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what is the cell cycle? a disease characterized by uncontrolled cell gr…
A process by which cells grow and divide to create new cells
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what is the g0 phase? the phase of the cell cycle where cells continue …
A state where cells perform their normal functions without preparing to divide
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what is the primary purpose of the cell cycle? to create glucose to pro…
To replace cells that are worn out or damaged
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during the middle of mitosis, how many nuclear envelopes does the cell …
0
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where is dna stored in the cell? chloroplast mitochondria cytoplasm nuc…
Nucleus
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what is the primary difference between g1 and g2? g2 takes longer to co…
C. G1 is the first phase of the cell cycle and occurs before S, while G2 occurs after S.
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aging occurs when... cells fail to copy dna accurately. cells miss thei…
cells exit the cell cycle and stop dividing completely.
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mitosis includes which steps? all of these are correct. the nuclear env…
A. All of these are correct.
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why is g0 important? without this process, cells would never completely…
Without this process, cells would never stop dividing.
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what is the g2 phase? the phase of the cell cycle where cells continue …
The phase of the cell cycle where cells continue to grow and make final preparations to divide
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cancer occurs when... cells miss their cue to exit the cell cycle. cell…
cells miss their cue to exit the cell cycle.
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what is the g0 phase? a state where cells perform their normal function…
A. A state where cells perform their normal functions without preparing to divide
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why is g0 important? without this process, cells would never stop divid…
Without this process, cells would never stop dividing.
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what is a common symptom of cancer? mitosis aging tumors cytokinesis
tumors
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what is cancer? a disease characterized by uncontrolled cell growth a d…
A. A disease characterized by uncontrolled cell growth
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why is g1 important? without this process, youd end up with two tiny an…
Without this process, you'd end up with two tiny and ineffective cells.
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why is mitosis important? without this process, youd end up with two ti…
"Without this process, new cells would not have their own copy of DNA."
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mitosis includes which steps? all of these are correct. dna is pulled t…
A. All of these are correct.
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during the middle of mitosis, how many nuclear envelopes does the cell …
0
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what is the primary difference between g1 and g2? g2 takes longer to co…
C. G1 is the first phase of the cell cycle and occurs before S, while G2 occurs after S.
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which phase of the cell cycle is the most time consuming? g1 g2 m s
G1
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assuming this cell is currently in the cell cycle, which phase is it mo…
M
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what is mitosis? the phase of the cell cycle where a cell actively divi…
The phase of the cell cycle where a cell actively divides into two identical cells
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which process is happening in this image? s g1 cytokinesis g0
Cytokinesis
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what is cytokinesis? a process by which a cell pinches together in the …
A. A process by which a cell pinches together in the middle to separate into two individual cells
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what is the s phase? the phase of the cell cycle where cells grow and p…
The phase of the cell cycle where cells synthesize, or create, an identical copy of their DNA.
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assuming this cell is currently in the cell cycle, which phase is it mo…
G2
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what is the g2 phase? the phase of the cell cycle where cells continue …
The phase of the cell cycle where cells continue to grow and make final preparations to divide.
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in which situation would the cell cycle be useful? all of these healing…
A. All of these
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what is the cell cycle? a disease characterized by uncontrolled cell gr…
A process by which cells grow and divide to create new cells.
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how long does it typically take to complete the cell cycle? 2 hours 18 …
24 hours
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what is dna? the genetic blueprint, or instructions, for our cells a pr…
The genetic blueprint, or instructions, for our cells.