Questions and answers by

Katana Yama

Questions (1,696)

Body size in mice is controlled in part by genetics. The following data show the number of mice grouped by lengths:Length Group
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Which example would likely result in new combinations of DNA in an individual's offspring?(1 point)Responses A spontaneous
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Crossing-over and independent assortment can occur during meiosis. How does this support the claim that meiosis results in
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A population of cheetahs on the plains in southern Africa has very little genetic variation compared to other species in the
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Methylation is an example of(1 point)Responses DNA replication DNA replication epigenetics epigenetics gene mapping gene mapping
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Identify the mutation below that would be passed on to living offspring if it happened in a parent.(1 point)Responses a silent
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During which stage of meiosis does crossing over occur?(1 point)Responses anaphase I anaphase one prophase I prophase one
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What kind of model should you choose to learn more about mitosis?(1 point)Responses a model that shows all of the the organelles
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How does mitotic cell division contribute to multicellular organism growth?(1 point)Responses It reduces the number of cells by
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Which biomolecule is the same in every cell of an organism?(1 point)Responses DNA DNA lipid lipid mRNA mRNA protein protein
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Why are there different types of cells?(1 point)Responses Different types of cells have different chromosomes in them. Different
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Which best describes the inputs and outputs of mitosis in a multicellular organism? (1 point)Responses Input: Genetic material
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As stem cells differentiate, they become more specialized. Identify the answer choice that orders the cell types from least
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Why is it difficult to create a vaccine against a common cold?(1 point)Responses Vaccines are unnecessary because antibiotics
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Which is true about the lytic and lysogenic cycles of viruses?(1 point)Responses The viral genome is injected into the cell only
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SARS is a respiratory illness caused by SARS-CoV-1, a coronavirus. It belongs to the same family of viruses that cause common
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In a study on human height, researchers found that identical twins raised in different countries often have different heights as
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A tall, heterozygous pea plant is cross-pollinated with another tall, heterozygous pea plant. Use a Punnett square to determine
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A student is studying the following model of DNA.A strand of DNA that has exons and introns. The exons are labeled as coding
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The mutation shown in the sequence can be categorized as which type?Original DNA sequence: A T A C G G T A G C A A T A T G C C A
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Scientists develop a genetically modified plant species that has a nonfunctional protein. The protein is necessary for the plant
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What type of molecule is added to ADP to make it a higher energy molecule that can carry energy in cells?(1 point)Responses
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During cellular respiration, energy is released. What would a model need to show to accurately demonstrate that matter is
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You want to build a model of aerobic cellular respiration. What should it show about the relationship between oxygen and energy
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Deoxygenated blood from the body returns to the heart through veins. The heart then pumps the deoxygenated blood through
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Think about the differences between chemical and mechanical digestion. Which organs in the digestive system are involved only in
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Most structures in a cell are membrane-bound, but some are not. Which structure lacking a membrane is present in plant cells and
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What is a distinguishing feature between smooth endoplasmic reticulum and rough endoplasmic reticulum?(1 point)Responses Rough
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What is the movement of water, containing no solute, across semi-permeable cellular membranes through proteins called aquaporins
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You find a blog post written by a student on a university website about photosynthesis. It cites multiple peer-reviewed
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How do plants and animals rearrange atoms in chemical reactions to support their functions?(1 point)Responses Plants and animals
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What are the building blocks that make up proteins?(1 point)Responses starches starches nucleic acids nucleic acids lipids
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Nucleic acids are biomolecules that are made up of nucleotides. Nucleotides contain sugar, a phosphate group, and a nitrogen
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Which of the following is true of mutations?(1 point)Responses Most mutations do not result in any overall change in the
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If people have such a similar genetic makeup, then why is DNA used to understand whether suspects are innocent or guilty of a
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What is a cause of red hair? (1 point)Responses An ancestral genetic mutation An ancestral genetic mutation A hormone imbalance
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Do mutations in body cells contribute to genetic variation?(1 point)Responses Yes, the mutations can be passed on to offspring
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This is the original strand of DNA: ATG AAG TTT GGC TAAWhich option would represent a frameshift mutation due to deletion during
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Horses have three basic coat colors: red (or chestnut), bay, and black. All the colors are controlled by the interaction of two
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Which cell replicates via meiosis?(1 point)Responses skin cell skin cell sperm cell sperm cell red blood cell red blood cell
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A student is completing a Punnett square for a trait (X/x) that is autosomal and inherited by the dominant allele. The father
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Which statement best describes the process of crossing over?(1 point)Responses Homologous chromatids pair up, and non-sister
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DNA replication - DNA polymerase, lagging stand, leading stand, parent DNA, topoisomerase, primase, helicase, RNA primer,
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Where would a mutation be introduced during replication?What nucleotide bases pair together to create new strands of DNA? Where
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How did NASA help to distinguish genetic factors from environmental ones when studying the effects of living space?(1 point)Resp
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Can sunlight change the distribution of traits in a population?(1 point)Responses No, because the environment can only change
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When scientists analyzed the variations of color expressed in monkey flowers, what did they realize about the offspring of
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Use the table to answer the following question.Grade 10-12 Height Range 55-59 60-64 65-69 70-74 Frequency 4 9 8 4 A statistician
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An animals weight is determined by:(1 point)Responses both a single gene and environmental factors both a single gene and
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Which statement best describes a polygenic trait?(1 point)Responses A polygenic trait is only controlled by multiple
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The different variants of a trait available to a gene are called(1 point)Responses alleles. alleles. phenotypes. phenotypes.
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Which of the following best describes natural selection?(1 point)Responses The process by which organisms that are better
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Kamar wants to know his mother's blood type. Kamar knows that his blood type is AB and his father’s blood type is heterozygous
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In a certain population of rabbits, the ratio of the phenotypes of brown fur and white fur is 1:1. What is the frequency of the
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How are mutations and meiosis similar?(1 point)Responses They both always sort genetic information in the gametes. They both
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How are mitosis and meiosis similar?(1 point)Responses They produce the same number of daughter cells. They produce the same
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How are somatic cells different from gametes?(1 point)Responses Somatic cells do not go through cell division. Somatic cells do
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A new species of plant is found in the rainforest. How can genotyping help scientists to determine what the plant is?(1 point)Re
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What is one way that a frameshift mutation could occur? (1 point)Responses three nucleotides are inserted three nucleotides are
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Millions of years ago, the ancestors of giraffes had short necks and used to eat leaves from the bushes on the ground. A genetic
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Examine the two strands of DNA below. Which kind of mutation occurred?Original strand: AGC GTA CCC TAC New strand: AGC GTA ACC
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5 of 55 of 5 ItemsQuestion Epigenetics are different than mutations in that mutations:(1 point) Responses can be inherited can
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Which factor could increase the possibility of mutations in your offspring?(1 point)Responses having a mutation on a non-gamete
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Which modification affects an organism’s expressed characteristics while leaving its DNA sequence unchanged?(1 point)Responses
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Which type of mutation causes cystic fibrosis?(1 point)Responses silent silent substitution substitution deletion deletion
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What is heredity?(1 point)Responses the exchange of genetic information to create new variation the exchange of genetic
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During meiosis, non-sister chromatids may exchange sections of DNA leading to genetic diversity. What is this process called?(1
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Which of the following is a difference between phase I and phase II of meiosis?(1 point)Responses Phase I results in two haploid
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Which one of the following steps involves the creation of proteins? (1 point)Responses replication replication transcription
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Why is it beneficial to store DNA in the nucleus?(1 point)Responses It makes it easier to conduct transcription It makes it
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How does mitosis assist in healing injuries?(1 point)Responses It allows for cells to create platelets for the wound to scab It
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What is the definition of a diploid cell?(1 point)Responses A cell with 2 sets of chromosomes A cell with 2 sets of chromosomes
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How is cell differentiation different than mitosis?(1 point)Responses Cell differentiation only occurs after a wound. Cell
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What is the importance of microtubules in cell division?(1 point)Responses They reform the nucleus in the divided cell. They
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When scientists and doctors are looking to heal wounds and cure diseases, stem cells are a great option because they can repair
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Some differentiated cells become senescent almost immediately, leaving the cell cycle and undergoing terminal differentiation.
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Why is mitosis a longer and more complicated process of cell division than binary fission?(1 point)Responses Binary fission does
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Immediately after an embryo forms, it begins to replicate new cells. What is the most likely type of cells that form during the
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During mitosis, what happens to the parent cell?(1 point)Responses It produces 4 daughter cells It produces 4 daughter cells It
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What general type of cell do fibroblasts make?(1 point)Responses tissue tissue heart heart neural neural blood
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Place the phases of a stem cell into the correct order.(1 point)Responses mitosis, gene expression, differentiation mitosis,
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Which of the following takes place during anaphase?(1 point) Responses Each pair of chromosomes is separated into two identical,
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The diagrams show cell proliferation. How does this relate to differentiation?
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How do you know that the two daughter cells will be genetically identical to their parent?
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What organelle is responsible for moving the sister chromatids within the cell?metaphase anaphase prophase telophase and
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What organelle is responsible for moving the sister chromatids within the cell?
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why is it important that the nuclear membrane dissolve?
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Sojourner Truthby Joanna Evans The fight for suffrage drives a wedge between a spirited young woman and her mother. . . .
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Sojourner Truthby Joanna Evans The fight for suffrage drives a wedge between a spirited young woman and her mother. . . .
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The Man Without a CountryHackett, Walter (adaptation) Characters NARRATOR COLONEL AARON BURR 1 of 24 Question Use the passage to
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The Man Without a Countryby Hackett, Walter (adaptation) PROSECUTOR: To sum up my case as prosecutor on this board of court
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Chapter 1: Sarai is nervous about her job interview. She spends her morning getting ready and practicing what she will say.Chapt
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he Man Without a Countryby Hackett, Walter (adaptation) SCENE 1 NARRATOR: Fort Massac is a small yet strategic United States
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Sojourner Truthby Joanna Evans The fight for suffrage drives a wedge between a spirited young woman and her mother. . . .
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What is the dramatic structure of a play?(1 point)Responses events that tell what happens after the climax events that tell what
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How can a poet use imagery to make their poem’s meaning understandable to readers?(1 point)Responses by illustrating beautiful
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Longingby Paul Laurence Dunbar If you could sit with me beside the sea to-day, And whisper with me sweetest dreamings o’er and
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Dim, dangerous cloudsstampede across the sky. Where did the sun go hide? Question Use the haiku to answer the question. What
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Longingby Paul Laurence Dunbar If you could sit with me beside the sea to-day, And whisper with me sweetest dreamings o’er and
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Use the limerick to answer the question.There once was a fair man from Beirut, who dreamed he was hearing a moo. He awoke in the
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