Biología
Biología celular, genética, ecología y fundamentos de ciencias de la vida.
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this food chain shows organisms in an ocean ecosystem. use the food cha…
First blank: more; Second blank: increase
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which statement is scientifically based? mutations rarely occur. all mu…
Mutations rarely occur.
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which of the following structures are the sensory receptor cells that s…
A. cones
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a mutagen is a living thing that has undergone a mutation. an agent tha…
an agent that causes a mutation in DNA.
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which of the following structures are the sensory receptor cells active…
C. rods
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which best describes genetic mutations? some inherited genetic mutation…
Some inherited genetic mutations can be good for the offspring.
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a point mutation changes the dna sequence cga to cgt, but the same prot…
C. silent
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which type of mutation occurs only in reproductive cells? somatic mutat…
germline mutation
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which type of mutation occurs only in gametes? germline mutation somati…
germline mutation
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which type of mutation always produces a stop codon? missense nonsense …
B. nonsense
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which of the following statements regarding the inner ear is not true? …
C. The semicircular canals are the sensory organs for hearing.
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arianna experienced chronic stress for the past 10 years. now her immun…
red blood cells
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the opening to the outer ear is the: a oval window. b elongated window.…
C. external auditory meatus.
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crocodile gecko: known as crocodile geckos because of their spiky skin,…
c. A textbook about reptiles
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unit 1: colonial america • spanish exploration and settlement • french …
b. A US history text book
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which of the following structures is not part of the external ear? a au…
B. malleus
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li ping lived through chinas cultural revolution. he narrowly escaped c…
severely.
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during transcription in eukaryotes, a type of rna polymerase called rna…
A cap consisting of a modified guanine nucleotide is added to the 5' end of the pre - mRNA, A poly - A tail (50 - 250 adenine nucleotides) is added to the 3' end of the pre - mRNA…
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what policy did president washington follow during the period of war in…
A. He remained neutral toward all European powers to avoid conflict.
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the red guards during the cultural revolution in china * 5 points did n…
- For the first question: believed that all should be equal in society, promoted communism, and discouraged intellectualism while encouraging work with hands. - For the second que…
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a cell phone carrier offers two plans for text messaging. plan a costs …
200
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what kind of hazards are natural events like earthquakes or floods? psy…
D. physical hazard
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which of the following is an example of a biological hazard? heavy meta…
D. pathogenic bacteria
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station 21. 41. name one genus and species that could generate the posi…
Genus: Pseudomonas, Species: aeruginosa (Other valid examples like Escherichia coli could also apply depending on the test, but Pseudomonas aeruginosa is a common choice for such …
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use the passage to answer the question. what was the main purpose of th…
A. to determine how the butterflies locate the Myrmica ants
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what can cause a reduction in dissolved oxygen levels in an aquatic eco…
an increased load of animal waste
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a technique called peptide nucleic acid fish (fluorescent in situ hybri…
False
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microbiologists use phenotypic techniques, which consist of both micros…
True
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the physiological reactions of bacteria to enzymes provide indirect evi…
True
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which of the following processes does not directly involve dna? multipl…
Translation
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use the paragraph to answer the question. \the parasitic butterfly larv…
C. the reason the Large Blue butterfly larvae lives in the ant nest
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which of the following is a key factor in determining the distribution …
B. light penetration
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the fact that eukaryotic cells have a ____________ and bacteria and arc…
nucleus
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what feature of water allows sunlight to penetrate to rooted plants, al…
transparency
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3 recombinant organisms often exhibit new traits, such as antibiotic re…
True
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the lac operon is usually in the __________ position and is activated b…
off, inducer
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which of the following is a characteristic of rna? multiple choice rna …
RNA molecules are necessary for translation and gene regulation.
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acid deposition can lead to which of the following changes in aquatic e…
C. loss of biodiversity
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which term is often used interchangeably with \acid rain\ to describe t…
acid deposition
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as dna replication continues and the replication bubble expands, the pa…
- Helicase: breaks H - bonds between bases - Topoisomerase: binds ahead of the replication fork, breaks covalent bonds in DNA backbone - Single - strand binding protein: binds aft…
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part d given a template strand of 3-atgctiggaca-5 and a partially made …
- Part D: \(5' - TACGAACC - 3'\) - Part E: \(3 - OH\) end of the new DNA strand, Single - stranded DNA template, All four deoxyribonucleotides triphosphates (containing A, C, T, o…
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what is removed from sewage after it is treated? biological contaminants
Biological contaminants
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guided practice activity #4 - y - intercepts this worksheet asks you to…
When the number of minutes of call time used ($x$) is 0, the total monthly cell phone bill ($y$) is $20. This means that there is a fixed monthly fee of $20 for the cell phone pla…
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what is defined as \humans causing the feeding levels in an aquatic eco…
Cultural eutrophication
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as bod (biological oxygen demand) increases, aquatic organisms have a h…
significantly decreases it
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what is the most likely source of endocrine disruptors in aquatic ecosy…
human medicines that pass through sewage plants
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increased turbidity (cloudiness) can cause what in aquatic ecosystems? …
A reduction in sunlight
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which element can biomagnify and bioaccumulate in ecosystems? mercury h…
Mercury
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a reduction in sunlight will affect which organisms the most? fish plan…
Plants
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read the following introductory paragraph: a slow, sad drama unfolding …
B. It presents the thesis.
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what will happen to the temperature in your decomposition layer if deco…
increase due to decomposer activity
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what is critical in almost every ecosystem? helium sunlight
Sunlight
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section 5.2 slope and y - intercepts objective 1 - interpret slopes as …
The cost of the cell phone bill is changing by \( \$0.05 \) (or 5 cents) per minute. In the context of the sentence template: The cost is changing by \( 0.05 \) dollars per minute.
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station 7. 13. name the enzyme in that generated the positive test belo…
Cytochrome c oxidase ### Question 14
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1 there are few venomous lizards in north america. one of them is the g…
1. C. the Gila monster’s eating habits 2. A. the Gila monster’s tail is probably fat in the spring 3. B. a Gila monster is a lizard to watch but not touch
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which of the following is a good description of wellness? a. emotional …
B. Wellness is related to balanced improvement in all six dimensions of health.
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compare the student text with the source. source: smithsonian instituti…
No, it is not plagiarized.
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compare the student text with the source. source: smithsonian instituti…
No, it is not plagiarized.
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transcribe and translate below dna sequence acg gcc tat aat atg gac aaa…
| DNA sequence | Transcribe (mRNA) | Translate (Amino acids) | | --- | --- | --- | | ACG GCC TAT AAT | UGC CGG AUA UUA | Cisteína - Arginina - Ísoleucina - Leucina | | ATG GAC AAA…
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45. which scenario best illustrates the bottleneck effect? a. a few mem…
45. B. A natural disaster drastically reduces the size of a population, leaving only a few survivors 46. B. A small group of individuals leaves a population to start a new colony,…
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43. what is a monomer? a. a small chemical building block that can join…
43. A. A small chemical building block that can join to form a polymer 44. B. Its shape changes, so the substrate no longer fits, and it loses function
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41. proteins are important because they: a. store energy only b. provid…
41. B. Provide structural support and can act as enzymes 42. D. Nucleic acids
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39. what is the primary function of carbohydrates in living organisms? …
39. B. Provide structural support and immediate energy 40. A. Store long - term energy and form cell membranes
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a. the enzyme permanently binds to the substrate b. the substrate binds…
B. Provide structural support and immediate energy
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36. transitional fossils are important because they: a. show how specie…
36. B. Show intermediate traits between ancestral and modern forms 37. B. Human tailbone
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35. which condition is required for speciation to occur? a. populations…
A. Populations must stop interbreeding
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34. sexual selection refers to: a. random loss of alleles in a populati…
B. Traits that help individuals attract mates become more common
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33. which statement about mutation is correct? a. mutations always harm…
B. Mutations create new alleles and increase genetic variation
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what is the main reason jilly researched the consequences of teens not …
D. to show the board why it's better to start school later (Note: Assuming the options are labeled A - D in order, with the last option being D. If the original labels were differ…
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32. how does gene flow affect a population? a. decreases genetic divers…
B. Increases genetic diversity by introducing new alleles
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31. which scenario best represents genetic drift? a. a small population…
A. A small population loses alleles after a natural disaster
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30. which of the following is required for natural selection to occur? …
30. A. Variation, inheritance, differential survival, and adaptation 31. A. A small population loses alleles after a natural disaster 32. (No se completó la opción B, pero suponie…
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9. what happens to an enzyme if the ph or temperature is far from its o…
B. The enzyme becomes denatured and loses function
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28. what is the main function of enzymes in biological reactions? a. st…
D. Lower the activation energy and speed up reactions
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27. in dna, which nitrogenous bases always pair together? a. adenine wi…
B. Adenine with thymine, cytosine with guanine
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choose the correct answer. what detail does the author give to help you…
Queen ants have a larger thorax and abdomen, are usually black, and are found near many eggs.
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multiple choice 2 points if you spin down (centrifuge) a tube of blood …
- Erythrocyte (RBCs): Carrying Oxygen primarily (and carbon dioxide) - White Blood Cells: Immune function and inflammation - Platelets (thrombocytes): Clotting
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1 multiple choice 2 points how many red blood cells roughly should be f…
1. 5,000,000 2. Water
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extra credit: find a news article about modern child labor laws being b…
To complete this extra - credit task, you can follow these steps: ### Step 1: Search for the Article Use reliable news sources such as The New York Times, BBC News, or Reuters. Se…
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25. which statement about dna is correct? a. dna is single - stranded a…
B. DNA is double - stranded and antiparallel, with strands twisting into a double helix.
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which of the following layers of the common amniotic egg laying ancesto…
- First question: C. Yolk - Second question: C. Cervix
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24. which macromolecule is the primary source of immediate energy for c…
C. Carbohydrate
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23. older fossils are found deeper in the rock layers, while newer ones…
C. Fossil records document the timeline of life and evolutionary change
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multiple choice 5 points what becomes of the ovarian follicle soon afte…
1. It transforms into the Corpus Luteum 2. Spermatogonia
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22. which statement best describes punctuated equilibrium? a. species s…
B. Species remain stable for long periods but evolve quickly during short events
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the levels of whiche of these hormones is expected to rise in response …
- First question: Inhibin - Second question: Estrogen and Progesterone
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21. a fossil shows features of both ancient fish and early amphibians. …
B. Transitional fossil
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20. which evidence best supports the idea that all life shares a common…
B. All living things contain DNA made of the same four bases
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19. two populations of squirrels are separated by the formation of a ca…
B. Geographic isolation
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14 multiple choice 5 points what happens at the monthly high point of e…
Ovulation
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18. which type of reproductive isolation occurs when two frog species b…
C. Behavioral isolation
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13 multiple choice 5 points human chorionic gonadotrophin replicates th…
B. LH
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which structure in the female body serves as the most likely location w…
Fallopian/Uterine Tubes
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macrophage nk cells t - helper cells cytotoxic t - cells 10 multiple ch…
Eosiniphils
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9 multiple choice 5 points which of the following cells are most likely…
Macrophage
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8 multiple choice 5 points which class of cell surface receptor is foun…
CD4
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7 multiple choice 5 points which of the following is an evolutionary an…
Complement
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multiple choice 1 point when a mother passes immunoglobulins to her nur…
B. Passive Immunity
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5 multiple choice 5 points what immune cells are most involved with fig…
Eosinophils
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multiple choice 5 points which of the following would be most involved …
Natural Killer Cells