Biologie
Zellbiologie, Genetik, Ökologie und Grundlagen der Lebenswissenschaften.
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question 20 osmosis is characterized by the movement of: a moving solid…
C. movement of water molecules from areas of high water concentration to low water concentration
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question 19 karyokinesis involves: a division of the cytoplasm b none o…
D. division of the nucleus
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question 18 peroxisomes: a breakdown proteins b detoxify alcohol and to…
B. detoxify alcohol and toxins in blood
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question 6 of 10 which of the following correctly describes a plasmid? …
C. A small, circular DNA molecule that replicates independently of the chromosomes
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question 5 of 10 what is a point mutation? a. a change in a single nucl…
A. A change in a single nucleotide
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question 17 what characteristic is shared by diffusion and facilitated …
B. Both involve movement from higher particle concentration to lower particle concentration
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question 4 of 10 the word antibiotic was originally defined, in 1942, a…
B. An antibiotic is any chemical, natural or synthetic, that inhibits the growth of a microorganism.
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question 16 protein synthesis occurs in the: a ribosomes b chromosomes …
A. ribosomes
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question 15 pinocytosis is defined as \cell eating\. a true b false
B. False
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question 3 of 10 which letter marks the zone of inhibition? a. a b. d c…
C. B
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question 14 during prophase: a chromatids (chromosomes) lines up in the…
C. nuclei begin to disappear
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question 2 of 10 which of the following correctly describes bacterial t…
B. Extracellular DNA is taken up by a bacterial cell.
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question 13 a human cell with.9% nacl is placed in a hypotonic solution…
D. swell
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question 12 which of the following best describes a lysosome? a contain…
A. contain powerful enzymes capable of digesting worn cellular parts, CHO, fats, proteins or substances that enter cell
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question 1 of 10 why would a scientist add a fluorescent jellyfish gene…
A. To determine if plasmid transformation has been successful
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question 11 a hypertonic solution: a would cause cells in the solution …
D. all of the above
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question 10 of 10 protein synthesis in prokaryotes is much simpler and …
B. mRNA does not have to cross a membrane.
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who first applied the term muckraker to journalism? john bunyan upton s…
President Theodore Roosevelt
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question 9 of 10 how does genetic information flow in nearly all cells?…
B. DNA→mRNA→protein
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question 8 of 10 a codon is part of a(n)_____molecule, while an anticod…
D. mRNA, tRNA
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question 8 which of the following sequences correctly lists the order o…
B. prophase, metaphase, anaphase, telophase
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question 7 the smooth endoplasmic reticulum: a has ribosomes attached b…
D. lacks ribosomes
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question 10 3 pts the source of the suns energy is ____. chemical burni…
nuclear fusion
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what must happen to a strand of polypeptides before it becomes a functi…
C. It must be folded into its proper shape.
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question 6 of 10 a codon contains a triplet code. which of the followin…
A. The three nucleotides of a codon carry information to make a single amino acid.
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in an otherwise normal cell, what happens if one mistake is made during…
A cell cycle checkpoint detects the error and pauses the cell cycle so the error can be corrected.
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question 5 of 10 how is mrna related to dna? a. mrna and dna differ onl…
C. mRNA and DNA have nucleotides that complement one another.
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a chemical that causes alterations in dna is a , and if this chemical …
C. mutagen; carcinogen
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review the text. express that anxiety by procrastinating and having ine…
1. Test anxiety can cause harmful negative thinking. 2. Test anxiety can affect behavior, including procrastination. 3. Test anxiety can affect physiology, such as heart rate. 4. …
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what would be the direct result if rna polymerase were missing from a c…
B. DNA could not be transcribed.
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which process occurs during anaphase of mitosis? chromosomes are replic…
Sister chromatids move to opposite ends of the cell.
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question 3 of 10 what is the end product of translation? a. termination…
C. Polypeptides
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3. what did tituba make to test if the girls were under supernatural po…
b. A witch cake
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question 2 of 10 what role do trna molecules play in protein synthesis?…
A. They carry amino acids to sites of protein synthesis.
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place the phases of mitosis in order from start to finish. metaphase-pr…
prophase - metaphase - anaphase - telophase
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question 1 of 10 which of the following must occur before mrna can leav…
B. I, II, and V
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which phase of mitosis is correctly matched to its definition? during t…
During metaphase, replicated chromosomes align in the middle of the cell.
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question 14 of 15 which of the following occurs when a peptide bond for…
A. A water molecule is released as a covalent bond forms between a carboxyl group of one amino acid and an amino group of another amino acid.
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which of the following provides dna with the capacity to serve as the c…
C. Its arrangement of nucleotides
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read the story. water rising 1 polara paced along the ramparts, strivin…
the duty to stand watch versus her inclination to daydream
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mutations caused by errors during translation most likely cause which o…
B. The effects can be beneficial, harmful, or neutral.
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in an otherwise normal cell, what happens if one mistake is made during…
A cell cycle checkpoint detects the error and pauses the cell cycle so the error can be corrected.
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which of the following best describes the role of rna polymerase in a c…
C. It reads the DNA molecule for synthesis of a complementary strand of mRNA.
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question 2 the function of the nuclear membrane (envelope) is to: a con…
A. control the passage of materials between the nucleus and cytoplasm
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molecules bind to specific receptor sites on the cell membrane during: …
D. receptor - mediated endocytosis
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2.1.2 quiz: protein structure, function, and synthesis the image shows …
B. 5 - carbon sugar
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which two cellular components make up the ribosomal subunits involved i…
B. Ribosomal RNA and ribosomal proteins
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which of the following determines the structural and functional charact…
A. Its amino acid sequence
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place the phases of mitosis in order from start to finish. telophase-an…
prophase-metaphase-anaphase-telophase
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question 7 of 15 which statement below accurately describes the 3 and 5…
D. They are carbons in the pentose sugar involved in the sugar - phosphate linkage and determine the direction of transcription.
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which woman would be most likely to benefit from genetic testing for br…
a 25 - year - old woman whose mother, aunt, and grandmother had breast cancer
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which process occurs during anaphase of mitosis? sister chromatids move…
Sister chromatids move to opposite ends of the cell.
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which phase of mitosis is correctly matched to its definition? during i…
During metaphase, replicated chromosomes align in the middle of the cell.
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if a cell is unable to progress beyond the g1 phase, it is a likely ind…
had genetic errors in genes responsible for regulating cell division.
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question 3 of 15 which of the following describes the initiation step o…
D. Ribosomal RNA recognizes a specific region of mRNA.
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a chemical that causes alterations in dna is a ______, and if this chem…
mutagen; carcinogen
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question 4 of 15 which of the following processes takes place in eukary…
A. The mRNA transcript undergoes a series of enzyme - regulated modifications.
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a chemical that causes alterations in dna is a ______, and if this chem…
mutagen; carcinogen
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which woman would be most likely to benefit from genetic testing for br…
a 25 - year - old woman whose mother, aunt, and grandmother had breast cancer
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16. molecules in the cell membrane that function as receptors are a. pr…
A. proteins
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place the phases of mitosis in order from start to finish. telophase-me…
prophase - metaphase - anaphase - telophase
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which process occurs during anaphase of mitosis? two nuclear membranes …
Sister chromatids move to opposite ends of the cell.
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select the correct text in the passage which excerpt highlights the the…
But at my back I always hear Time's winged chariot hurrying near. And yonder all before us lie Deserts of vast eternity (Andrew Marvell, "To His Coy Mistress")
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question 3 of 15 what accounts for the finding that a protein functions…
B. The protein's overall shape can vary depending on the solvent.
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in an otherwise normal cell, what happens if one mistake is made during…
A cell cycle checkpoint detects the error and pauses the cell cycle so the error can be corrected.
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which phase of mitosis is correctly matched to its definition? during t…
During metaphase, replicated chromosomes align in the middle of the cell.
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is a relationship between organisms that strive for the same limited re…
Competition
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if a cell is unable to progress beyond the g1 phase, it is a likely ind…
had detrimental genetic errors that could not be repaired.
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competition between two kangaroos over a common mate would be a intersp…
C. intraspecific competition.
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which type of competition exists when two male birds of the same specie…
d. intraspecific
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which of the following are possible outcomes of interspecific competiti…
A. extinction C. evolution D. specialization
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6b: choose two directions: choose two words that best explain or define…
1. b. time, c. order 2. a. repeated, b. continuous 3. b. diary, d. journal 4. a. accurate, b. stopwatch 5. a. brief, d. ends 6. b. modern, d. current 7. a. position, b. place 8. b…
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organisms may compete for which of the following resources? select all …
A. food, B. mates, C. nesting sites, D. territory
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_____ is a process by which competition leads to the use of different r…
C. Specialization
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interspecific competition often leads to what disastrous outcome for th…
Extinction
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is the relationship between organisms when they strive for the same lim…
Competition
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in general, what causes normal cells to become cancer cells? cell cycle…
loss of cell cycle control
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match each form of energy with its description. electrical energy nucle…
electrical energy - found in the flow of electrical charges; nuclear energy - found in the nucleus of an atom; thermal energy - found when internal energy is transferred; chemical…
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match each form of energy with its description. electrical energy nucle…
- Electrical energy: found in the flow of electrical charges - Nuclear energy: found in the nucleus of an atom - Thermal energy: found when internal energy is transferred - Chemic…
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cell division by mitosis is a mechanism of cell replication. some singl…
two cells genetically identical to the original cell
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select the function of the centromere in the transmission of genetic in…
the attachment point for sister chromatids
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a diagram of the cell cycle is shown. it maps the phases of the cell cy…
- The cell may undergo apoptosis. - The cell can temporarily halt cell cycle progression. - The cell may initiate the next phase in the cell cycle.
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7. the building blocks or monomers that make up carbohydrates are a. nu…
C. monosaccharides
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predators of different species competing for the same prey is which typ…
Inter - specific competition
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during the cell cycle, the cell must pass through several checkpoints t…
The cell begins dividing uncontrollably, forming a tumor.
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interspecific competition takes place between members of species.
different
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the largest number of europeans migrated to the united states primarily…
decreased economic opportunities at the same time that European countries experienced rapid population growth
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which of the following events would be considered a migration pull fact…
opening of a new factory
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how would you differentiate intraspecific competition and interspecific…
B. intraspecific is competition within a species, interspecific is competition between different species
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which is an example of specialization as a result of interspecific comp…
B. Anole lizards eat insects on the forest floor, while other lizards eat insects in trees.
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an excerpt from bishot jaques boussets political treatise: it appears f…
7. Kings should be treated as sacred beings, guarded as holy things, and attacking them is sacrilege. 8. Kings should use the power God has granted them for good (in line with God…
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a boy migrated from honduras through guatemala and mexico, then entered…
B. forced
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2. economist feel the best way to evaluate the cost of a decision is to…
False
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mutualism is a when two organisms interact and it is beneficial for bot…
A. when two organisms interact and it is beneficial for both of them
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the hermit crabs use the shells of dead snails for homes. what type of …
c. Commensalism
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a novel fungus was introduced into a forest, causing disease and death …
C. Parasitism
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a recent study shows that indoor tanning (using tanning beds) is now ca…
- People do not understand that using a tanning bed is dangerous. - Using tanning beds is extremely popular.
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during which phase of mitosis do spindle fibers shorten, pulling sister…
anaphase
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consider the image. which phase of mitosis is shown in the image? proph…
telophase and cytokinesis
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select the correct answer from each drop - down menu. what are the best…
First blank: conduct a live webinar Second blank: publish her presentation on a website