Answer:
C
Explanation:
Phototaxis (phototactic response) is the cellular behavior in which cells swim toward or away from the light source. The euglena have eyespots that detect light so that it can move toward sunlight for photosynthesis.
Euglena require an eyespot to exhibit phototactic behavior. Thus option C is correct.
what is phototaxis ?Phototaxis is defined as the movement of an organism in response to external stimulus that means light, it is a locomotory movement of living organisms towards the source of light or away from the source of light.
Taxis means the movement of an organism in response to a stimulus like light or food, it is an innate response of an organism to variation in light intensity and direction.
More is the intensity of light in a particular direction the more will be phototactic stimulation occurs in the organism, its own biological reason and phototactic response are incidental and serve no end purpose.
The advantages of phototaxis are the regulation photosynthesis, the finding of food in phototrophic organisms, facilitation of larval dispersal, or the increased likelihood of gamete fusion on the surface.
Thus option C is correct.
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In this lab, you will simulate birds with three different beaks. After watching the birds feed, you will remove fruit to simulate a change in the environment. What question are you answering by doing this observation? Write it by filling in the blanks below.
What is the effect of…
_______
…on…
_____
The question that is being answered by doing this observation is:
What is the effect of a change in the environment on the feeding ability of birds with different beaks?
What is an observation in science?An observation is any information gathered during an experiment.
Through our senses, we can learn about the outside world, and we can also record information using tools and instruments from science.
An observation in science aims to answer a particular question or inquiry through experiments.
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Classify the statements as describing a gene, a chromosome, or a genome.
Gene Chromosome
Genome Each organism has one Determines a particular characteristic of an organism Describes the collection of all of the replicable genetic material of a cell or organism Codes for a specific Is the largest Is a linear or protein or RNA molecule in the cell circular molecule Encodes all the heritable Is a unit of DNA carrying genetic traits of an organism information encoded in genes Is a contiguous Functions to package, organize, Acts as the basic piece of DNA and regulate access to DNA unit of heredity May include plasmids
Classification of statements according to whether they describe a gene, a chromosome or a genome:
Determines a particular characteristic of an organism. Correct answer: gene. is a continguous unit of DNA carrying genetic information encoded in genes. Correct answer: chromosomemay include plasmids. Correct answer: geneis a linear or circular molecule. Correct answer: genomeis the largest molecule in the cell. Correct answer: genomeeach organism has one. Correct answer: genomeencodes a specific RNA or protein. Correct answer: genedescribes the collection of all of the replicable genetic material of a cell or organism. Correct answer: genomefunctions to package, organize and regulate access to DNA. Correct answer: chromosomecomprises the physical unit that results in gene linkage. Correct answer: chromosomeencodes all the heritable traits of an organism. Correct answer: genomects as the basic unit of heredity. Correct answer: geneA gene is a unit of genetic information composed of a segment of DNA or RNA that codes for a particular protein or trait.
A chromosome is a structure composed of DNA and proteins that carries genetic information in the form of genes.
A genome is the complete set of genetic information for an organism, including all of its genes.
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SCIENTIFIC QUESTION:
does prairie rainfall affect the health of the following years calves
Rainfall can affect the health of calves in a number of ways, depending on the quantity and timing of the precipitation.
How does adequate rainfall help in the cattle?Adequate rainfall can provide the necessary moisture for the growth of vegetation, which in turn can provide the necessary nutrients for the cows to produce milk, which is important for the growth of their calves. Also, good rain helps to maintain the pasture's quality, which will help the cattle to have enough forage to eat during the grazing season.
How does prairie rainfall affect the health of calves?Heavy rainfall or rainfall at the wrong time of the year can lead to flooding or over saturation of pastures, which can lead to reduced forage quality and availability, making it harder for the cows to find enough food to support the growth of their calves. Additionally, heavy rain can lead to soil erosion and loss of topsoil, which can further reduce the quality of the pasture.
In addition, too much water in the pasture can lead to mud and standing water, which can cause problems for the cattle such as increased risk of infection and disease.
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After returning from a trip to Africa, tom begins to feel weak & tired, has severe anemia, blood smear reveals protozoan present in his blood. Health care provider tells tom he has malaria. What is the causative agent of his disease?
Tom is suffering from malaria and the causative agent of malaria is Plasmodium malariae.
Malaria is a disease which is caused by Plasmodium malariae, which is a unicellular protozoan. It is a very common disease in the tropical and the subtropical countries like the countries present in the continent of Africa. It not only affects humans but also affects other animals.
Some common symptoms of malaria include fever, weakness, nausea, headache, diarrhea, rapid heart rate, abdominal pain etc. Malaria is spread by the infective female anopheles mosquitoes. If left untreated, malaria can prove to be fatal causing brain damage and even seizures.
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Which statement is TRUE about the molecule glucose?
•It is a simple carbohydrate that serves as the monomer for complex carbohydrates
•It is a simple protein that serves as the monomer for complex proteins
•It is a product of aerobic cellular respiration
•It is a reactant of photosynthesis
What are 2 other species concepts that can be used to identify species?
Answer:
Typological or Essentialist, Morphological, Phenetic
Explanation:
Which of the following best explains why coastal regions generally have more moderate air temperatures than inland regions of the same latitude?
The following that best explains why coastal regions generally have more moderate air temperatures than inland regions of the same latitude is the ocean has a moderating effect on the area.
Option A is correct.
What are coastal regions?Coastal regions are local administrative units (LAUs) that are bordering or close to a coastline.
It is a known fact that the water has a high specific heat capacity, no appreciable change is given in its temperature. In such a way, the ocean is considered as the world's largest water bath as it has 71% of the total earth and keeps coastal temperatures from high variations in the air temperature.
The ocean warms and cools more slowly than the atmosphere, that is why coastal weather tends to be more moderate than continental weather, with fewer hot and cold extremes.
Evaporation from the ocean, especially in the tropics, creates most rain clouds, influencing the location of wet and dry zones on land.
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Complete question:
Which of the following best explains why coastal regions generally have more moderate air temperatures than inland regions of the same latitude?
A.
The ocean has a moderating effect on the area.
B.
Most of the sunlight that reaches the ocean's surface is reflected.
C.
Coastal regions have a lower altitude.
D.
Heat energy is transferred from inland areas to coastal areas during the summer and from coastal areas to inland areas during the winter.
The law of segregation states that every organism possesses a pair of?
Mendel's law of segregation states that individual alleles segregate during gametogenesis. Mendel crossed the True Breeding High Plant (TT) with the True Breeding Short Plant (TT). This cross (F1 generation) gave only large plants with the Tt genotype.
Mendel's law of segregation
Mendel's law of segregation states:
"During gamete formation, each gene segregates from each other, so that each gamete carries only one allele for each gene." The law of segregation is the second law of heredity. According to the law of segregation, only one of the two gene copies present in an organism is distributed to each gamete (egg or sperm cell) it produces, and the distribution of gene copies is random.
The law of segregation dictates that all diploid individuals have a pair of alleles (copies) for a particular trait. Each parent randomly passes one allele of her to its offspring, resulting in a diploid organism. Alleles containing dominant traits determine offspring phenotypes.
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Green pod is the dominant trait, and yellow pod is the recessive trait for pod color in pea plants. What did Mendel discover in his first round of experiments when he crossed true breeding plants with green pods with true breeding plants with yellow pods?
A. All of the offspring had green pods, and the yellow pod trait seemed to disappear.
B. Half of the offspring had green pods, and the other half had yellow pods.
C. All of the offspring had spotted yellow and green pods.
D. One-fourth of the offspring had yellow pods, and three-fourths had green pods.
the answer is A because green is the dominant trait
Explain many ways that humans can help ecosystems remain sustainable.
Answer:
Humans can help ecosystems remain sustainable in many ways. For example, we can reduce our consumption of resources and opt for eco-friendly alternatives. We can also minimize our use of plastic and purchase items made from recycled materials. Additionally, we can conserve energy by using energy-efficient appliances, taking shorter showers, and turning off the lights when leaving a room. Furthermore, we can reduce our carbon footprint by using public transportation, carpooling, or riding a bicycle instead of driving. Finally, we can help by participating in conservation efforts and volunteering with organizations that are working to protect and preserve the environment. By taking these simple steps, we can help ensure a more sustainable future for our planet.
Which is the end result of cytokinesis from a cell undergoing mitosis?one cell that has two identical copies of dnaone cell that has two different copies of dnatwo cells that have two identical copies of dnatwo cells that have two different copies of dna.
The end result of cytokinesis from a cell undergoing mitosis is two cells that have identical copies of DNA. Cytokinesis is the final step of mitosis where the cell divides its cytoplasm and organelles into two identical daughter cells. Each of the daughter cells will have a complete set of chromosomes, which contains an identical copy of the cell's DNA. This ensures that each daughter cell will have the genetic information necessary to function as a separate, fully-functioning cell.
describe the role of chlorophylls in the biochemical pathways of photosynthesis
The role of chlorophyll in the biochemical pathway of photosynthesis is to absorb solar energy, trigger CO2 fixation to produce carbohydrates, and provide energy for the ecosystem as a whole.
What is chlorophyll?Chlorophyll is called the green substance of leaves. Chlorophyll molecules are able to absorb red, blue, and violet light. Until it reflects the yellowish-green color that humans often see. Chlorophyll is needed by the body for photosynthesis in addition to water, carbon dioxide, and light.
Chlorophyll is located in plant chloroplasts, which are tiny structures in plant cells. This is where photosynthesis takes place. The job of chlorophyll in plants is to absorb light, which is usually sunlight. The energy absorbed from light is transferred to two types of energy storage molecules.
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How does a substance across the cell membrane in diffusion?
A substance crosses the cell membrane in diffusion by passive transport.
Passive transport is a process of moving substances that does not require energy. This transport occurs due to differences in concentration between substances or solutions.
Diffusion is the movement of substances, whether solid, gas or liquid, with or without passing through a membrane, from an area of high concentration to a low concentration. The process of diffusion is a process of moving substances without requiring energy and is very important for the process of transporting substances in living bodies. For example, the process of taking oxygen in single-celled animals is taken from the environment through passive transport by diffusion because the concentration of O2 in the air is higher than inside the cell.
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Are r-selected species short lived?
R-selected species are indeed short-lived.
Species whose populations are governed by their biotic potential are called r-selected species.
Biotic potential is defined to be the maximum reproductive capacity of a species under optimum environmental conditions. Environmental resistance, which includes any factor that holds back the increase in number of the population, restricts full expression of the biotic potential of a species.
The defining characteristic of r-selected species is the production of numerous small offspring, followed by exponential population growth. R-selected species mature quickly (thus require little or even no parental care), require short gestation periods, and are short-lived. Members of this group, unlike K-selected species, are capable of reproduction at a relatively young age, but many offspring die before they reach reproductive age.
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Match the neuron type with its function.
Drag statements on the right to match the left.
Sensory (afferent) neuron
Motor (efferent) neuron
Interneuron
Located in PSN; carry impulses away from the CNS
C-a Located in PNS; carry impulses toward the CNS
Located in the CNS: integrate sensory signals
Sensory neurons located in the PNS transmit impulses to the CNS.
Unipolar cell bodies of sensory neurons are located in the sensory ganglia and may lie along spinal roots or cranial nerves.
Sensory neurons are nerve cells that are activated by sensory input from the environment. For example, touching a hot surface with a fingertip fires sensory neurons.
Sensory nerves carry signals to the brain that help us touch, taste, smell, and see. Motor neurons carry signals to muscles and glands that aid movement and function.
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How many oxygen atoms are in two molecules?
Two oxygen molecules would contain four oxygen atoms.
Chemical elements are substances that only contain one kind of atom, such as oxygen. Since oxygen has an atomic number of 8 and the official chemical symbol O, an oxygen atom has eight protons in its nucleus. At room temperature, oxygen is a gas that has no flavor, color, or odor. In nature, oxygen exists as a molecule. To create dioxygen, or O₂, two oxygen atoms must make a covalent double bond with one another.
in one molecule of oxygen there are 2 oxygen atoms, so there would be Two oxygen molecules would contain four oxygen atoms.
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country music star going through gender reassignment.
a. true
b. false
It is false that a country music star goes through gender reassignment because its' totally there wish to reassign their gender or not.
The term "gender reassignment" applies to a transgender person and is a legal concept. Any person who has suggested, begun, or finished a procedure to switch their sex is included. SRS is not morally or scientifically suitable since it contravenes fundamental moral and legal norms.
Preferably, compositions are given a music star emblem based on how well they performed. The popularity of the song and whether it is an often famous song on a record are the main factors here. The tracks on a record that are performed the most frequently are typically given stars.
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the extracellular matrix of bone contains many collagen fibers and ____
The extracellular matrix of bone contains many collagen fibers and Tissues.
Thus, Numerous collagen fibres and mineralized calcium salts, primarily in the form of hydroxyapatite crystals, are present in the extracellular matrix of bone.
The bone tissue is strengthened and rigidified by these mineralized elements. The mineralized matrix contributes to the bone's hardness and capacity to withstand compression, while the collagen fibres give flexibility and tensile strength.
Collagen and mineralized matrix work together to give bone its distinct mechanical characteristics.
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Most damage during hurricanes is due to:
Question 3 options:
High winds
Tornadoes created by the hurricane
Storm surge flooding
High pressure breaking windows
Answer:
Storm surge flooding. This can have the most impact on peoples homes and the community.
Explanation:
Hope it helps! =D
If chemical signals in the cytoplasm control the progression of a cell to the m phase.
The fusing of a cell in the G1 phase with a cell in the early M phase would most chromatin condensation in preparation of nuclear division in both cells if chemical cues in the cytoplasm.
What occurs in the M phase and how is it regulated?During the M phase, cell division takes place, consisting first of nuclear division (mitosis), then of cytoplasmic division (cytokinesis).
Do cytoplasmic molecular signals influence how the cell cycle behaves?Cell cycle regulation is done via molecular signals in the cytoplasm. The majority of these chemical signals are hydrophobic compounds, such as steroid hormones, that can pass through the cell membrane and connect to their receptors in the cytoplasm.
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The complete question is -
If chemical signals in the cytoplasm control the progression of a cell to the M phase of the cell cycle, then fusion of a cell in G1 with a cell in early M phase would most likely result in the ?
What is the difference between a gliding joint and a condyloid joint?
A synovial joint that allows for sliding or gliding motion is called a gliding joint. It is constructed between two bones that contact on flat articular surfaces. Condyloid joints often referred to as ellipsoid joints, are made of a bone with an egg-like shape called a condyle that fits into a cavity with a similar shape.
The wrist joint is an illustration of a gliding joint. The joints between two vertebrae, ankle joints, acromioclavicular joints, etc. are examples of other gliding joints.
Condyloid joints often referred to as ellipsoid joints, are made of a bone with an egg-like shape called a condyle that fits into a cavity with a similar shape. Condyloid joints only provide forward-backward and side-to-side movement; rotation is not permitted, despite the fact that it sounds similar to a ball and socket joint.
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What are two importance of variation
It helps a species survive, it also helps us distinguish who is who, it helps creatures adapt to their surroundings as well as changes that occur in the environment, but it also helps a species emerge strong if natural selection favours it.
Is it important to have variety in our everyday lives?It benefits a population because it allows a small number of people to adapt to environmental changes, allowing the population to survive.
Different phenotypes can be introduced into an organism via genetic changes that modify gene activity or protein function. If a characteristic is beneficial and aids an individual's survival and reproduction, the genetic variation is more likely to be handed on to the following generation (a process known as natural selection).
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which diagram shows the correct positions of Earth as it orbits the sun
Answer: The one with a burrito
Explanation:
Meow
What materials/resources do you need to get rid of emerald ash borer?
Answer:Emerald ash borer is controlled by the use of certain systemic-types of insecticides that can be taken into the tree in some manner and will then move to areas where it can kill adults (leaves) or the flatheaded borer larvae (cambium). This is a different approach than is used for many other wood boring insects.
Explanation:
what are the limitations to the Earth’s core?
Since the temperature and pressure significantly rise as we travel more inside the planet, we are unable to reach the centre of it. Furthermore, there is currently no technology that can penetrate the depths of the earth.
The gravity train is almost impossible in actuality since no material is known to be able to resist the temperature or pressure (about 3 million atmospheres) at the Earth's core.
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Sherman suggests that reproduction always creates individuals with adaptive traits. Does this seem correct? why or why not?.
The mechanism of evolution that produces living organisms that are adaptable to their circumstances is natural selection. Over millions of years, this mechanism has shaped the beaks, feet, and feathers of birds, enhancing their ability to survive in their habitats.
What does the term "adaptive characteristic" mean?A characteristic is a feature of the entire organism's developmental pattern or a specific part of it. Therefore, an adaptive trait is a feature of the developmental pattern that makes it easier for its carrier to survive and/or reproduce in a series of different situations.
How does reproduction work?Reproduction is a biological process in which an organism produces children that are genetically identical to itself. The offspring develop, reach adulthood, and then have more children. Consequently, there is a cycle of genesis, growth, and demise. Generation after generation, a species can survive thanks to reproduction.
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Bacteria are tremendously successful unicellular organisms, yet all large organisms are multicellular. Unicellular organisms cannot grow very large because the -.
Bacteria are unicellular organisms and multicellular. Unicellular organisms cannot grow very large because they only have a single cell.
What are bacteria?Bacteria are a group of single-celled microorganisms classified at the domain level. Together with the Archaea domain, bacteria are classified as prokaryotes. Bacterial cells have a specific shape, such as a ball, rod, or spiral, which is usually a few micrometers in size.
There are 2 sizes of bacteria, namely unicellular and multicellular organisms. Unicellular is an organism consisting of only one cell while multicellular is an organism consisting of many cells. Protists are also included in living things with eukaryotic cells which are meant to have a nuclear membrane.
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What “virus-specific” structures and enzymes could be exploited by potential drugs that we could take?
The “virus-specific” structures and enzymes that could be exploited by potential drugs that we could take are Envelope proteins, Reverse transcriptase, Protease, RNA polymerase, Hemagglutinin Fusion inhibitors, etc.
What are virus-specific structures and enzymes?This refers to some virus-specific structures and enzymes that could be targeted by potential drugs.
Some examples include:
Envelope proteins: Many viruses, such as HIV and influenza, have an envelope that surrounds their genetic material. Drugs that target these envelope proteins can prevent the virus from entering host cells and reproducing.Reverse transcriptase: Some viruses, such as HIV, use an enzyme called reverse transcriptase to convert their RNA genome into DNA. Drugs that inhibit reverse transcriptase can prevent the virus from replicating.Protease: Many viruses, such as HIV and Hepatitis C, use an enzyme called protease to cleave viral proteins and release new viral particles. Drugs that inhibit protease can prevent the virus from replicating.RNA polymerase: Some viruses, such as coronaviruses, use an enzyme called RNA polymerase to replicate their genetic material. Drugs that inhibit RNA polymerase can prevent the virus from replicating.Hemagglutinin: Some viruses, such as the influenza virus, have a protein called hemagglutinin which allows the virus to attach to host cells. Drugs that target this protein can prevent the virus from entering host cells and reproducing.Fusion inhibitors: Some viruses, such as the coronaviruses, use a protein called spike protein to fuse with host cells, by targeting this protein drugs can prevent the virus from entering host cells and reproducing.Note: Many of these drugs are in the development stage and many of them are not yet approved for human use.
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8. Energy is transferred in several different ways during the
process of cellular respiration. Give two examples of ways
that energy is transferred during this process.
During cellular respiration glucose and oxygen are converted into carbon dioxide and water and the energy is transferred to ATP.
How energy is transferred during the process of cellular respiration?It is possible to catch and put to use the energy released when electrons transition to a lower-energy state. During cellular respiration, electrons from glucose steadily proceed down the electron transport chain in the direction of oxygen, passing through states with progressively lower energies and releasing energy at each stage. Both aerobic (using oxygen) and anaerobic cellular respiration are possible (without oxygen). When glucose and oxygen interact during aerobic cellular respiration, ATP is created that the cell can use. As byproducts, water and carbon dioxide are produced. The most fundamental type of carbohydrate, monosaccharide glucose, can be mixed with oxygen, for instance. Potential energy is released when the oxygen receives the high-energy electrons that are present in the glucose.To learn more about cellular respiration refer to:
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can someone help me please and i will give them Brainliest
T-T
Answer:
T = 38%
C = 12%
G = 12%
Explanation:
Adenine and thymine pair together
Since adenine is 38%, thymine(T) is also 38%
Cytosine and Guanine pair together
there are total are 100%
so, 100-38-38= 24
24/2= 12
so, Cytosine(C) and guanine(G) are 12% each