Biologie
Biologie cellulaire, génétique, écologie et bases des sciences de la vie.
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why do we use positive and negative controls in the gram stain? a) to e…
d) To verify that the Gram stain was performed properly
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which reagent is used as a counterstain? a) crystal violet b) iodine c)…
d) Safranin
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question 2 which of the following was not a focus of the romantic autho…
C. logic
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welcome back to the lab! what a journey huh? before we move on with the…
C. Crystal violet, safranin, 95% ethyl alcohol, iodine
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t - tall and t = short in the punnett square below, what belongs in the…
\(Tt\)
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what is it called when both alleles in a genotype are the same? homozvg…
Homozygous
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6/15 bb is a ______. phenotype genotype
genotype
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bb is a phenotype genotype
genotype
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how many chromosomes are in a normal human body cell?
46
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if we conduct the procedure correctly, what is the outcome of a well - …
A. Gram - positive appear purple, and Gram - negative appear pink
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what are the names of the two groups of bacteria resulting from the gra…
d) Gram - positive and Gram - negative
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an organisms physical expression of a trait is called a(n) genotypedomi…
phenotype
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what is the gram stain method? a) a staining method used to differentia…
A. A staining method used to differentiate bacterial species into two groups
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question 9 according to dr. tim white, humans are more related to ____ …
- Question 9: C. Chimpanzees - Question 10: B. Chemical sequencing
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question 9 (1 point) which of the following is an example of a man - ma…
Question 9: industrial disaster Question 10: Material Data Safety Sheet
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what is the probability of heterozygous offspring?
50%
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question 7 (1 point) listen what type of disaster is caused by humans? …
Question 7: man - made hazards Question 8: earthquake
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in a punnett square, a lower case letter stands for a ______________ al…
C. recessive
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what are physical characteristics of an organism? genotypes alleles gen…
Traits
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one character in peas that mendel studied was yellow versus green seeds…
\(\frac{1}{2}Y\) and \(\frac{1}{2}y\)
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why is it important to track changes in perception throughout a literar…
to observe how the theme is refined over time
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a dog named pickles on march 20, 1966, the solid - gold world cup troph…
In 1966, a missing trophy made a dog named Pickles famous.
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where are the lipopolysaccharides found? a) both gram - positive and gr…
C. The outer membrane of Gram - negative bacteria
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yams if youve ever shopped for produce in a u.s. grocery store, youve p…
True yams are starchy tubers from Asia and Africa, while U.S. yams are a type of sweet potato.
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where do we find teichoic acids? a) both gram - positive and gram - neg…
d) Gram - positive bacteria
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how is the relationship between cells, tissues, organs, and systems def…
Cells combine to form tissues, which combine to form organs, and organs work together in systems.
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the three major parts of the circulatory system are the heart, the bloo…
pumping blood
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breathe in, the in the lungs facilitate the exchange of gases, allowing…
First blank: air sacs; Second blank: heart; Third blank: energy; Fourth blank: body.
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birds and dinosaurs though we think of dinosaurs as being extinct, rece…
Fossil evidence shows that dinosaurs and birds share many features, suggesting that they are related.
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youre participating in a marathon on a hot day. as you run, you start t…
nervous system and circulatory system
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persuasive text: rhetoric repetition - the repeated use of a word or ph…
B. simile
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persuasive text: rhetoric repetition - the repeated use of a word or ph…
A. irony
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persuasive text: rhetoric repetition - the repeated use of a word or ph…
B. euphony
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persuasive text: rhetoric repetition - the repeated use of a word or ph…
B. alliteration
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two kinds of iron the human body needs iron to produce hemoglobin, a su…
Plant and animal food sources both contain iron, but the iron in animal foods is more accessible to the body.
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use the spreadsheet to prorate the following expenses and find the corr…
\(83.08\)
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why is the bacterial cell wall of such great importance? a) the cell wa…
C. All answers are correct
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unusual bird parenting birds have a reputation as excellent parents. th…
Unlike most species of birds, brood parasites such as the cuckoo don't provide any parental care.
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fruit or vegetable? according to botanists, who study and classify plan…
Botanists consider all plant parts with seeds to be fruits, but nutritionists consider many of them to be vegetables.
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what are the names of the two groups of bacteria resulting from the gra…
A. Gram - positive and Gram - negative
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understanding the composition of the bacterial cell wall is essential i…
B. Staining method used to differentiate bacterial species into two groups
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read the passage. publishing doctor zhivago boris pasternaks 1956 novel…
Boris Pasternak couldn't get his book *Doctor Zhivago* published in the Soviet Union, so he had the book smuggled out of the country.
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the evolving human skeleton our early ancestors were hunter - gatherers…
As early humans developed agriculture, their bones changed significantly.
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african wild dogs: ultimate predators? many books, papers, and televisi…
African wild dogs have a reputation as fierce hunters who work in teams, but new data suggests otherwise.
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african wild dogs: ultimate predators? many books, papers, and televisi…
African wild dogs have a reputation as fierce hunters who work in teams, but new data suggests otherwise.
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question 10 1 pts a heterozygous tall pea plant is crossed with a short…
50%
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question 8 trisomy occurs when an individuals cells: have 3 of a partic…
have 3 of a particular type of chromosome
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question 7 1 pts monosomy occurs when an individuals cells: have only o…
are missing 1 of a particular type of chromosome
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question 6 the mother and father of a male hemophiliac (a recessive x -…
\(X^{H}X^{h}\) (the fifth option in the given list)
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question 5 1 pts if a man and woman both have type ab blood, what is th…
50%
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question 4 think about homozygous blue (b¹b¹), homozygous red (b²b²), a…
incomplete dominance
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in a certain species of flowering plant, flowers may be blue (b¹b¹), pu…
0%
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in humans, unattached earlobes and freckles are dominant traits. if two…
\(\frac{1}{16}\) (corresponds to the third option in the multiple - choice list)
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question 1 how many genetically different gametes can a pea plant produ…
2
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question 1 which of the following are caused by bacteria? choose all th…
- **Question 1**: A. Gonorrhea, B. Syphilis, C. Chlamydia - **Question 2**: A. Flu, B. Chicken Pox, D. Measles
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ang he river (yellow river) is sometimes referred to as \chinas sorrow.…
B. Flooding has caused massive human and property loss over time.
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question 6 of 10 which is a biotic element found in the tropical rain f…
D. Plants
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question 5 of 10 a deer lives in a forest. it feeds on plants and drink…
C. The deer's habitat
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question 3 of 10 what is the name for a large region with consistent or…
C. Biome
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question 2 of 10 a plant is able to survive in a desert biome, but cann…
B. Is able to prevent water from evaporating
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click to correct any capitalization errors. with the invention of the c…
With the invention of the cotton gin during the Industrial Revolution, the South experienced major social and economic changes.
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question 10 (2.5 points) retake question a 2013 investigation found \wo…
bacteria
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question 25 of 25 what is nuclear transfer used for? a. reverse transcr…
C. Creating clones
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question 24 of 25 which is one of the bases found in dna? a. leucine b.…
B. Cytosine
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question 23 of 25 which protects the dna of a virus? a. pilus b. plasmi…
C. Capsid
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question 22 of 25 which amino acid chain will be formed by the codons s…
A. Lys - Ser - Cys
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question 21 of 25 what strand of mrna would be produced from the strand…
A. CGA UUC
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question 20 of 25 a point mutation occurs in a sex cell of an adult rab…
A. The rabbit's offspring will not survive.
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question 19 of 25 how can a mutation in a gene lead to a new trait in a…
A. The mutated gene codes for a protein that causes a new trait.
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question 18 of 25 what is it called when bacteria take in dna from thei…
D. Transformation
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question 17 of 25 how are genes and proteins related? a. proteins are m…
B. Genes contain the code to make proteins.
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question 16 of 25 which best describes the structure of a dna molecule?…
A. Two strands of DNA joined by nitrogenous bases
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question 15 of 25 which of the following steps happens last during tran…
A. RNA polymerase reaches the end of a gene.
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question 14 of 25 which is a difference between bacteria and viruses th…
D. Bacteria are made of cells.
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question 13 of 25 which type of mutation causes a protein to be synthes…
B. Missense
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question 12 of 25 what effect will a virus in the lytic cycle have on a…
C. It will cause a disease in the organism.
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question 11 of 25 what would be the strand of complementary dna produce…
A. TAC GCT
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question 10 of 25 how is information translated during protein synthesi…
B. From nucleic acids to amino acids
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question 9 of 25 which type of mutation will affect the largest number …
D. Chromosomal mutation
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question 8 of 25 the results of gel electrophoresis are shown below, wi…
B. 1
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question 7 of 25 why was using reverse transcriptase necessary for find…
C. Scientists had to convert information from amino acids to nucleic acids.
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question 6 of 25 which is a method of making many copies of dna? a. gel…
D. Polymerase chain reaction
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question 5 of 25 what is a possible effect of an error during transcrip…
C. The wrong amino acid chain will be produced.
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question 5 of 25 what is a possible effect of an error during transcrip…
C. The wrong amino acid chain will be produced.
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question 4 of 25 which describes how mrna is used by a cell? a. it is u…
C. It is used to transfer genetic information.
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question 3 of 25 what is the role of trna during translation? a. it mov…
A. It moves the amino acids into a chain.
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question 2 of 25 a strand of mrna has the bases adenine - cytosine - ur…
B. Asn
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question 1 of 25 which process is the first step of protein synthesis? …
A. Transcription
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question 10 of 10 in an experiment, a scientist makes a radioactively l…
C. The human genome might contain at least one viral gene.
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question 8 of 10 which of the following explains why a probe will hybri…
C. Complementary base pairing occurs only between the probe and the target gene.
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question 7 of 10 which of the following reactions is used to radioactiv…
D. Synthesis of new DNA
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question 6 of 10 which explains how a probe can find a single - strande…
A. The probe is the second strand of DNA that forms double - stranded DNA with the target gene.
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question 5 of 10 which of the following describes how damaged dna can l…
C. An error occurs when the damaged DNA is repaired.
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question 4 of 10 what could be a good effect of a mutation? a. dna is d…
D. More variety in a population.
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which concept best describes the socially constructed roles associated …
B. Gender
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question 20 _____ dysphoria is a diagnostic category in dsm - 5 for ind…
D. gender
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question 3 of 10 33p is a radioactive isotope of phosphorus. can 33p be…
B. Yes, because it can replace the phosphorus atom in the phosphate group.
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question 1 of 10 which of the following can be used to determine the ge…
A. Geiger counter
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question 10 of 10 what does reverse transcriptase use to form dna? a. m…
A. mRNA
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question 9 of 10 why can only certain parts of dna be used as dna finge…
B. The parts must be unique to the person.