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Questions and answers by visitors named
kjhgtfrdesdcvgb
Questions (152)
Red-green color blindness (Xb) is a recessive sex-linked trait. A colorblind male marries a normal color vision female.
Their
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Farmers across many centuries have used selective breeding to enhance certain qualities in their crops. Which of the following
1 answer
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Viruses are often referred to as non-living infectious particles as they lack many characteristics of living organisms like
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19 views
Plants produce glucose in order to
a make food for cellular respiration. b get sunlight. c produce oxygen. d turn green.
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Which statement best describes ATP?
a It is created when cells undergo replication. b It is the primary source of energy for
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Which statement best describes ATP?
a It is created when cells undergo replication. b It is the primary source of energy for
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The diagram shows a process that is occurring in the nucleus of a cell.
What would MOST LIKELY happen if the process in the
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When do chromosomal mutations usually appear?
a as a result of certain diseases b when organisms reproduce asexually c gradually,
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An organism is exposed to a mutagen that causes a mutation in the kidney cells. Which best describes if the offspring of the
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Which question is a scientist who studies the genetic engineering of crops most likely attempting to answer?
Genetic_6349da534390
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Bacteria were some of the first organisms to be genetically modified because they have a relatively small genome and reproduce
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The eye color of a person has no correlation with his/her shoe size. Which of Mendel's principles does this illustrate?
Mendel on
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In a karyotype, ____________ are photographed, and then the images- paired. From this information, and we can study them to
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If an organism has two of the same alleles for a given trait, we say it is ____________, and in __________ traits we
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In some chickens, feather color is controlled by incomplete dominance. When a black chicken mates with a white chicken, all the
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Which of the following statements, from the cell theory, best supports the idea that viruses are non-living?
Sticker With A Dead
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A student is learning about infections that can occur in the human body. Infections could be caused by viruses, bacteria, and
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Review the karyotype above. Select the best response describing the individual with this karyotype.
a Normal female 46, XX b
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The picture shows the lysosomes and ribosomes of a cell.
Which best describes how the lysosomes and the ribosomes interact to
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A cell biologist compared the properties of rough endoplasmic reticulum (ER) and smooth ER. She found that one type of ER is
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Which of the following correctly identifies the main role of mitosis and cytokinesis in multicellular organisms?
a Increase
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Study the information on the chart and the graphic. What can you infer about photosynthesis?
a The closer the light source, the
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ltraviolet radiation causes mutations in the DNA of skin cells that have been exposed to the Sun. Will such mutations have any
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Scientists have inserted a gene that codes for resistance to a biodegradable weedkiller into a certain plant. Which of the
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Food science is one area where biotechnology has made many advancements; however, many people are skeptical of some of the
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Viruses reproduce through the use of host cells. In this process, viruses reproduce by injecting their DNA into the host cell
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What is the meaning of globalization?(1 point) Responses Exchange of goods and information between countries Exchange of goods
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Which of the following is NOT an example of homeostasis?
a As humans age, they become more susceptible to disease and cancer. b
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A scientist designed an experiment to examine the effects of exercise on respiration. He collected the volume of the gases
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The picture shows a leaf found on an autotrophic plant.
The cells in this leaf are making their own energy by the process of a
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What can be the cause of a single gene mutation?
YOU GET A MUTATION YOU GET A MUTATION, YOU ALL GET MUTATIONS - Oprah Winfrey
1 answer
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What is recombinant DNA technology useful in producing?
a artificial hearts and kidneys b insulin and growth hormones c new
1 answer
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If an organism has two different alleles for a given trait, it is called ____________, and in __________ traits we automatically
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If an organism has two different alleles for a given trait (like attached and free earlobes), they are considered ____________,
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Clouded leopards are a medium-sized, endangered species of cat, living in the very wet cloud forests of Central America. Assume
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Review table below: It shows the amino acids in a segment of the protein, hemoglobin. This protein is present in many species,
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Two organisms are closely related and are thought to share a similar evolutionary history. If this assumption is correct, what
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Read the passage about fish.
Certain fish that live in the deep ocean bottom have eventually developed smaller eyes than fish
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Two graphs regarding a population of land snails are shown below.
f83f73e4-a9c4-4b99-aa61-190cd2c884b2 Which of these conclusions
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The diagram shows the changes in foot structure in a bird population over many generations
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Katherine develops the cladogram below based on patterns of common ancestry.
Katherine wants to determine relationships using the
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Which statement best describes the scientific community's current understanding of natural selection?
a Natural selection causes
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Why does a pesticide lose its effectiveness over time?
a The pests become resistant. b The pesticide expires within a week of
1 answer
6 views
A new sea star species has been identified in Australia. This species is a hermaphrodite that self-fertilizes and keeps its
1 answer
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Which of the following would be an example of an "acquired" human characteristic, that would be heritable, as proposed by
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a
q=0.1; p=1.0 b q=0.2; p=0.8 c q=0.8; p=0.2 d q=0.04; p=0.16
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Mitosis and meiosis have all of the following in COMMON, except___
a Mitosis and meiosis have parent cells that divide to produce
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Read the passage about punctuated equilibrium.
The theory of punctuated equilibrium states that many species did not evolve for
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You have sampled a population in which you know that the percentage of the homozygous dominant genotype (AA) is 16%.
Using that
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Use the diagram below to answer the question that follows.
According to the diagram, which two groups of organisms are most
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The graph displays observations of a moth population over time.
5f9fe99f-5ac4-432f-94c4-56119734a68f What does this graph
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Which BEST describes how survival of the fittest relates to natural selection?
Mechanisms of evolution (4 of 4) Natural selection
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In response to an outbreak of swine flu in 1976, the United States government encouraged all citizens to receive a vaccination
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Which claim is an evolutionary advantage of asexual reproduction over sexual reproduction?
a Asexual reproduction can increase
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Present in all kinds of tissues, stem cells have the unique ability to develop into other kinds of cells if necessary. An
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When a new viral infection appears, scientists try to develop a vaccine to destroy the virus. What would most likely be
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The model shows the process of how certain bacteria respond to antibiotics.
What is happening at Step 3? a The dead bacteria are
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Often occurring in plants and some large mammals, the cartoon below shows an example of which type of reproductive isolation?
a
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In the small islands off the southern tip of Florida, a subspecies of the white-tailed deer, called the key deer, can be found.
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British scientist John Allen states that cells containing chloroplasts and mitochondria are complex, creating unique genes and
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Which of these is one of the main ways that a new species forms?
Photos: The top 10 amazing new species discovered in 2012 | 89.3
1 answer
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The best example of biological fitness is the ability of the individual to
a Contribute to the gene pool of the next generation.
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Glucose is needed by all cells in order to do cellular respiration. How does glucose, a large molecule, enter cells without
1 answer
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Peyton draws a cladogram using a cat, whale, praying mantis, and water boatman. She uses the diagram showing homologous and
1 answer
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Genetic drift tends to occur in populations that ______.
Choose all that apply. File:Random sampling genetic drift.gif -
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How does natural selection work with regards to genes and what is passed to the next generation?
Genes and Loci | BioNinja a
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Read the passage about fish.
Certain fish that live in the deep ocean bottom have eventually developed smaller eyes than fish
1 answer
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A scientist is performing an investigation using biochemistry to show the evolutionary relationship between an unknown species
1 answer
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Choose all that evidences that apply to support endosymbiosis.
Endosymbiotic Theory - Science with The Amoeba Sisters a
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The frequency of two alleles in a gene pool is 0.17 (A) and 0.83(a). Assume that the population
is in Hardy-Weinberg equilibrium.
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What type of information would go in the area labeled B (hash lines)?
Quiz image a organisms b DNA analysis c shared
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Early bacteria that could perform photosynthesis evolved into
a Mitochondria b ADP c Chloroplast d ATP
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When two closely-related species develop different mating dances or mating calls, this is an example of _______________.
a
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The most-likely cause of the changes in beak size among the finches on the Galapagos Island was
a the humidity in the air b
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The diagram shows two populations of bacteria.
This diagram reveals that natural selection operated on the April population of
1 answer
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A farmer is spraying his crops with a specific pesticide. He notices a drastic decrease in the insect population, so he uses the
1 answer
5 views
Glucose is needed by all cells in order to do cellular respiration. How does glucose, a large molecule, enter cells without
1 answer
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Genetic drift tends to occur in populations that
a are small b are formed from new species c are very large d have unchanging
1 answer
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The diagram shows the frequency of alleles A and a in a population over three generations. The starting allele frequency of A is
1 answer
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It is believed that wild turkeys are descended from a peafowl-like, or peacock-like, ancestor. Look at the two photographs. The
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It is believed that wild turkeys are descended from a peafowl-like, or peacock-like, ancestor. Look at the two photographs. The
1 answer
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Asian elephants and African elephants have a common ancestor. Over time, genetic differences between them developed as a result
1 answer
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Mercury is a heavy metal found in industrial waste. When this waste is released into a water source, mercury is absorbed by fish
1 answer
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Genetic drift tends to occur in populations that ______.
Choose all that apply. File:Random sampling genetic drift.gif -
1 answer
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Speciation among the finch populations of the Galapagos Islands occurred primarily as a result of the founder effect,
1 answer
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If a population experiences no migration, is very large, has no mutations, has random mating, and there is no selection, which
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In a population of finches in which one group has a short, parrotlike beak and another group has a long, narrow beak with
1 answer
6 views
What could happen if Susan stopped taking her antibiotics when she felt better, instead of taking them for the length of time
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There are only about 100 Florida panthers living in the wild. Which of the following is NOT a reason why the Florida panther has
1 answer
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The image represents a human cell in an isotonic solution. Some common cellular molecules that can freely move across the plasma
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often occurring in plants and some large mammals, the cartoon below shows an example of which type of reproductive isolation?
a
1 answer
6 views
During the industrial revolution in England, a population of light-colored moths population fell while a population of
1 answer
3 views
Supporting the Endosymbiotic Theory, mitochondria and chloroplasts have a _________ membrane.
a thin b double c thick d single
1 answer
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Peyton draws a cladogram using a cat, whale, praying mantis, and water boatman. She uses the diagram showing homologous and
1 answer
5 views
A scientist is performing an investigation using biochemistry to show the evolutionary relationship between an unknown species
1 answer
7 views
What does the presence of a vestigial structure in a modern organism indicate?
a Natural selection perpares the body of organisms
1 answer
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Camouflage and mimicry are examples of a/an ____
a mutation. b adaptation. c perfection. d competition.
1 answer
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Within a population of butterflies, the color brown (B) is dominant over the color white (b). And, 29% of all butterflies are
1 answer
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Which of these is one of the main ways that a new species forms?
Photos: The top 10 amazing new species discovered in 2012 | 89.3
1 answer
4 views
Which statement MOST accurately defines adaptation?
a A trait an organism acquires during its lifetime to support its success. b
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