Answers
Answer: Movement
Explanation:
Tubulins are the building block of microtubule,there are five distinct forms: alpha, beta, gamma, delta, and epsilon tubulin, they exist as globular dimeric .
Alpha and beta tubulins assemble into heterodimers they come together to form the long microtubule filaments. Some organism cellular movements require microtubules this include the beating of cilia and flagella for movement, cytoplasmic transport of membrane vesicles.
The alpha tubulin side of a microtubule is the site of microtubule movement.
(option c)
TubulinsTubulins are the microtubule building block and they exist as globular dimeric proteins of alpha/beta chains. There are five different forms: alpha, beta, gamma, delta, and epsilon tubulin.3
Alpha Tubulin is a fundamental cytoskeleton protein with many roled
Tubulin-binding drugs kill cancerous cells by inhibiting microtubule dynamics, which are required for DNA segregation and therefore cell division.
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Related Questions
What is one reason the cell division is important for living organisms?
Answers
Answer:
below
Explanation:
Cell division allows organisms to grow and to repair damaged structures.
Hope this helped! :)
what organelle is similar to the muscular system
Answers
How does Kinetic energy and how does it relates to diffusion and temperature.
HURRY HELPPP!!!!!!!!!!!!!!!!!!!
Answers
Explanation:
Diffusion is directly proportional to the Kinetic energy possessed by the particle.
More the Kinetic energy, more the energy.
Temperature directly influences the Kinetic energy -- or energy of motion -- of the molecules in a fluid. Molecules with greater Kinetic energy diffuse faster; in other words, the rate of diffusion increases as Kinetic energy increases.
Particles in all state of matter are in constant motion and this is very rapid at room temperature. A rise in temperature increases the Kinetic energy and speed of particles; it does not weaken and forces between them. The particles in solids vibrate about fixed positions; even at very low temperatures.
A structure made up of two or more types of tissues that performs a specific set of functions is at what level of organisation
Answers
Answer:
Organ
Explanation:
Cell, tissue, organ, organ system, organism
Match the term to its description.
Chromosphere
Photosphere
Radiative zone
Corona
[Choose]
[Choose]
[Choose ]
[Choose ]
Answers
The matching of the layers can be seen in the lines that have been shown below.
What are the layers?Chromosphere: A thin layer of the Sun's atmosphere located above the photosphere and below the corona, characterized by a reddish glow.
Photosphere: The visible surface of the Sun, characterized by a granulated appearance caused by convective motion of gases.
Radiative zone: A region of the Sun's interior where energy is transferred through radiative processes as photons bounce around, taking up to a million years to reach the convection zone.
Corona: The outermost layer of the Sun's atmosphere, extending millions of kilometers into space, characterized by a faint glow and visible during a total solar eclipse.
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How does the number of chromosomes in an organism's reproductive cells compare to the number of chromosomes in the organism's body cells? A. The reproductive cells have the same number of chromosomes as the body cells. B. The reproductive cells have twice as many chromosomes as the body cells. C. The reproductive cells have four times as many chromosomes as the body cells. D. The reproductive cells have half as many chromosomes as the body cells.
Answers
Answer: D. The reproductive cells have half as many chromosomes as the body cells.
the rod ns mutant allele contains a stop codon in the middle of the open reading frame which results in polypeptide.
Answers
The rod ns (rodless) mutant allele contains a premature stop codon in the middle of the open reading frame, which results in a truncated polypeptide.
The open reading frame (ORF) is the portion of a gene's DNA sequence that is translated into a protein. In the case of the rod ns mutant allele, the presence of a stop codon within the ORF means that the normal sequence of the gene is disrupted and the resulting polypeptide is shorter than it would be in the wild-type gene. stop codon is a sequence of three nucleotides that signals the end of protein synthesis. When the ribosome encounters a stop codon during translation, it terminates the process and releases the newly formed polypeptide into the cytoplasm. In the case of the rod ns mutant allele, the premature stop codon results in the premature termination of protein synthesis, leading to the formation of a truncated polypeptide.
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asap please however is right gets 20 points
Originally all living things were organized into 2 kingdoms. Please explain how our system of classifying things has changed over time. What scientific advancements have contributed to these changes?
Answers
Scientists grouped all living things into two kingdoms plants and animals. Over time, scientists continued to learn about organisms. They found that many living things did not fit well in either group. the number of cells in their bodies.
Millions of plants, animals, and microorganisms found on earth, have been identified by the scientists while many new species are still being discovered around the world. Therefore, to classify these newly discovered species, with new characters, new systems of classification have to be devised every now and then. This creates the requirement to change the existing systems of classification.
What is classification?Classification is defined as the establishment of a hierarchical system of categories on the basis of presumed natural relationships among organisms.
Scientific advancements have contributed to these changes are as follows:
The discovery of new species means that previously existing species became outdated.When scientists find new animals or species, the previous systems become obsolete due to the new and latest addition.The new species also has to be added to the classification. Thus, when new species are found, the new DNA or features also needs to be added to the classification.This requires and demands a complete change in the previously existing system.That is why the classification system of animals has changed over time.For more information regarding classification system, visit:
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4. Eukaryotic DNA is found as chromatin in the nucleus. Concisely describe what is the effect of replacing lysine and arginine in the highly conserved regions of histones with phenyl anime and tyrosine on DNA condensation.
Answers
The replacement of lysine and arginine amino acids by phenylalanine and tyrosine residues would render a decondensed chromatin state where DNA would be unable to interact with the histones of the nucleosomes.
The deoxyribonucleic acid (DNA) is a double helix molecule composed of two long chains of nucleotides. In DNA, both strands are connected by noncovalent bonds between nucleotides in opposite strands, called hydrogen bonds.The DNA molecule is negatively charged due to the presence of phosphate groups in each nucleotide.Moreover, histones (H2A, H2B, H3, H4) are proteins that associate with DNA to form nucleosomes and thus condense the DNA molecule into more compacted configurations (e.g., chromatin fibers).Histone proteins are highly basic proteins due to the presence of positively charged lysine and arginine residues that contact the phosphate groups and/or bind to the minor and major grooves of DNA.Moreover, phenylalanine and tyrosine are uncharged residues, and therefore these amino acids cannot establish strong interactions with the DNA molecule.Hence, the replacement of lysine and arginine amino acids by phenylalanine and tyrosine residues would render a decondensed chromatin state where DNA would be unable to interact with the histones of the nucleosomes.
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4. Where is rough endoplasmic reticulum located?
A. Cytoplasm
B. Ribosomes
C. Nucleus
D. Cell wall
Answers
Answer: Nucleus (C)
Explanation:
Rough ER is found throughout the cell but the density is higher near the nucleus and the Golgi apparatus. Ribosomes on the rough endoplasmic reticulum are called 'membrane bound' and are responsible for the assembly of many proteins. This process is called translation.
Based on Kepler's observations about planetary motion, what is the relationship between a planet's orbital velocity and its distance from the sun?
Answer is the greater the distance, the slower the orbital velocity..
I do not understand it. Can someone please explain it to me? Thank you!
Answers
Answer:
Explanation:
The closer the planet is to the sun,the faster it moves because the suns gravitational pull is stronger.The answer tells you that the greater the distance,the slower the planet will rotate
Kepler laws of planetary motion can be stated as planets move around the sun in elliptical orbits, the radi joins the planets to sun leaves out equal areas to equal intervals in the equal lengths of time.
The planets that are farther away from the sun have slow velocity and longer paths such as pluto. These factors make it longer for one complete revolution.Thus greater will be the distance the slower will be the velocity of movement such as that of mercury and pluto. As sun gravitational pull will be weaker.Learn more about the Kepler's observations about planetary motion.
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Which organism is likely to carry out the process shown in the diagram?
CO, + H,O
Heat
www
Chloroplast
Mitochondrion
MASS
Respiration
OA. Barn owl
OB. Mushroom
C. Alligator
-0₂
Sugar
ATP
Answers
Answer:
C
Explanation:
took the test
Different measures of disease are useful to evaluate and assess public health programs and needs in different situations. For each of the following questions, state which measure would best support your goal.
Measures of disease:
I = incidence rate (p. 126)
P = prevalence (p. 113)
L = lifetime prevalence (p. 114)
M = crude mortality rate (crude death rate) (p. 112)
R = sex ratio (counts) (p. 109)
a. To demonstrate the risks of car-train crashes at railroad crossings without warning signals.
b. To demonstrate the amount of children's exposure to secondhand cigarette smoke.
c. To estimate the number of persons who have had leukemia during their lifetimes.
d. To estimate the number of healthcare facilities needed to support patients with Alzheimer's disease.
e. To argue that mortality from HIV infection is a more serious public health problem in one region of the US than another.
Answers
Answer:
Different Measures of Disease
Question Measure of Disease
a. I = incidence rate
b. P = prevalence
c. L = lifetime prevalence
d. L = lifetime prevalence
e. M = crude mortality rate
Explanation:
a) Measures of disease:
I = incidence rate (p. 126): measures the frequency of disease occurrence in a population over time. It is measured as new episodes of illness in a period divided by the population.
P = prevalence (p. 113): ratio or proportion of persons in a population with a disease at a time or over time. It is based on a sample.
L = lifetime prevalence (p. 114): the proportion or ratio of a population who had a disease at some point in their life.
M = crude mortality rate (crude death rate) (p. 112): the ratio of deaths in a period among a geographical population.
R = sex ratio (counts) (p. 109): ratio of male and female population.
Sleve tubes are found in which vascular tissue?
OA. phloem
OB. xylem
Oc.
tracheids
Answers
Answer:
A. phloem
Explanation:
The analytical approaches of science are suitable for answering many questions. Are there some questions that science cannot answer? Why or why not?
Answers
1. Metaphysical or Philosophical Questions: Science is limited to investigating the physical and natural aspects of reality. It is not equipped to address questions related to metaphysics, such as the nature of consciousness, the existence of a higher power, or the purpose of life. These questions often fall within the realm of philosophy, ethics, or personal belief systems.
2. Subjective and Value-based Questions: Science deals with objective observations and measurements, but it cannot provide answers to subjective experiences, personal preferences, or matters of taste. Questions related to beauty, morality, love, or personal preferences are not within the domain of scientific inquiry.
3. Historical and One-time Events: Science relies on repeatability and empirical evidence. It may not be able to provide definitive answers about unique historical events or singular occurrences that cannot be replicated or observed directly. Questions about the origin of the universe or the specifics of a particular historical event may fall into this category.
4. Aesthetic and Artistic Questions: Science can analyze and understand certain aspects of art, such as the composition of colors or the acoustics of music. However, questions about the subjective interpretation, emotional impact, or artistic value of a particular work of art are beyond the scope of scientific inquiry.
It's important to note that the limitations of science do not diminish its significance or value. Science has provided remarkable insights and advancements in numerous fields, but it has its boundaries in addressing certain types of questions that require different methods of investigation, such as philosophical reasoning, personal introspection, or cultural interpretation. Embracing the interdisciplinary nature of knowledge allows us to explore and appreciate the diverse approaches to understanding the world.
HELP ME
Ribosomes that aren't free are found...
A. floating in the cytoplasm.
B. attached to the endoplasmic reticulum.
C. attached to the lysosome.
Answers
Answer:
b i think not completely sure.
\(\huge \bf༆ Answer ༄\)
The Correct choice is ~ B
The ribosome that aren't free are found on Rough Endoplasmic reticulum (RER) for protein synthesis !
What typically happens to the density and hardness of a rock when it undergoes metamorphism?
A. Both increase
B. Density increases but hardness decreases
C. Both decrease
D. Density decreases but hardness increases
Answers
Answer:
density decreases and hardness increases
Explanation:
density decreases slowly but surely and the hardness increases because it needs to be protected and everyone knows a rock feels hard so there ya go!
Discuss the cause and transmission of bilharzia
Answers
Bilharzia becomes infected if you come into connection with contaminated water for example, when swimming, swimming or washing and the tiny worms tunnel into your skin. Once in your body, the worms move through your blood to areas such as the liver and bowel. After a few weeks, the worms start to lay eggs.
What are the ways of transmission of bilharzia?The parasites enter the body when a person is swimming, washing, or swimming in polluted water. They can also become contaminated by drinking the water or eating food that a person has passed in untreated water.
How can the space of bilharzia be stopped?Prevention & Control
Avoid swimming or wading in freshwater when you are in nations in which schistosomiasis happens.Drink secure water.Water used for bathing should be brought to a rolling boil for 1 minute to kill any cercariae, and then chilled before bathing to avoid burning.To learn more about Bilharzia, refer
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How does irrigation affect ecosystem health? (A) (B) (C) (D) P Irrigation uses much of the world's freshwater supplies and can also contribute to soil depletion and alter weather patterns. Irrigation is necessary to ensure the large harvests that the global population requires, and its use will only increase in the future. Irrigation can release harmful greenhouse gases such as methane and carbon dioxide into the air, contributing to climate change. Irrigation can increase the content of nitrogen and phosphorous in soil and water to dangerous levels, harming animals and plants in the ecosystem.
Answers
Option (D) is the proper response because irrigation can raise the amounts of nitrogen and phosphorus in soil and water to risky levels, affecting ecosystem animals and plants.
What impact does irrigation have on the environment?The potential over-extraction of groundwater for irrigation has the potential to have direct detrimental environmental effects (withdrawing water in excess of the recharge rate). This may cause the water table to drop, land to sink, water quality to deteriorate, and saltwater intrusion in coastal areas.
What impact does irrigation have on water use?Compared to sprinkler irrigation, flood irrigation loses less water to evaporation, but more water may be lost through runoff in the fields. The major reason we parameterize the irrigation techniques is to reflect their unique water use effectiveness.
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Help me please Yall I swear this is so anoying
Answers
Explanation:
Photosynthesis is performed by all plants,algae and even some microorganisms. Which plants use sunlight,water and carbon dioxide to create oxygen and energy in the form of sugar/ aka glucose/food for plants
Hope this helps!
Some molecules are unable to enter cells by diffusion, and instead, must use active transport. How is diffusion different from active transport?
Answers
Answer: See Below
Explanation:
Diffusion is considered passive transport because it does not require energy to move molecules across the membrane. This is possible because of difference in concentration gradient. Molecules will flow from a higher concentration to a lower in order to make uniform concentrations, this is a natural process that does not require energy.
Active transport requires energy, typically in the form of ATP to transport molecules against a concentration gradient.
Assume that Brown (B) hair is dominant over blond (b) hair and that oval shaped eyes (O) were dominate over round (o) eyes. Complete a Punnett square showing a cross between a mother who was heterozygous for both traits and a father who also was heterozygous for both traits. Based on Mendel’s work what could you predict about this cross? What percent chance do these parents have that the child will be blond with oval shaped eyes? What percent chance do the parents have that the child will have brown hair with oval eyes? What percent chance do the parents have that the child will have blond hair with round eyes?
Answers
Answer: 25%
Explanation:
So basically, you draw two Punnett Squares, one for each of the different traits. Since both parents are heterozygous, meaning they have a combination of traits, you would label the four sides of the square B, b, B, and b. Same thing with the eye shape trait. Label the sides O, o, O, and o. Then, you plot it like in the picture I provided. When the B and the B match up, label it BB. When the B and the b match up, label it Bb, etc. Then, since your chances of getting blonde hair (bb) is 1 in 4 (4 combinations total), the percentage of getting blonde hair is 25%. Same thing for getting round eyes, just repeat the process. Now that you have all your squares filled, you can see that your chances of getting both blonde hair and round eyes is 2 in 8, which simplifies to 1 in 4, which is equal to 25%
What type of plate boundary caused the feature shown in the photo ?
Answers
Answer:
Convergent boundary.
Explanation:
A convergent plate boundary is a location where two tectonic plates are moving toward each other, often causing one plate to slide below the other (in a process known as subduction). The collision of tectonic plates can result in earthquakes, volcanoes, the formation of mountains, and other geological events.
17. According to Sigmund Freud, memories that easily surface into
everyday thought are in which part of the mind?
Hint: In the iceberg analogy, this is the part of the iceberg that's just
below the surface of the water.
Answers
Sigmund Freud, memories easily surface into everyday thoughts that are considered conscious parts of the mind.
How conscious mind work?The conscious mind holds all of our ideas, memories, feelings, and desires at any one time.
This includes our memories, which although sometimes unconscious, are easily retrievable and brought back to consciousness.
Therefore according to Sigmund Freud, memories that easily enter into everyday awareness are a conscious aspect of the mind.
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All the terms below apply to anthozoans except
medusa
cnidocyst
septa
pharynx
Answers
Answer:
expect
Explanation:
Gregor Mendel is famous for his experiments on Pisum sativum (pea plant, pictured above), which is capable of self-fertilizing by combining its own male and female gametes.
What type of reproduction does Pisum sativum undergo and why?
Answer:
CORRECT (SELECTED)
Sexual reproduction; sperm and egg will fuse to form a unique zygote.
Explanation:
Pisum sativum is a hermaphrodite, meaning that it has both male and female sex organs, each producing sperm and egg. Once they fuse during self-fertilization, the result will be a unique plant offspring.
Answers
The type of reproduction that Pisum sativum undergoes is sexual reproduction because it involves the fusion of male and female gametes.
What is Sexual reproduction?Sexual reproduction is a type of reproduction that involves the formation of a new organism by combining the genetic material of two organisms.
The genetic material of each parent organism is located in the gametes (sperm and egg) produced during the process of meiosis.
According to this question, Gregor Mendel is said to be famous for his experiments on Pisum sativum (pea plant) which is capable of self-fertilizing by combining its own male and female gametes.
This type of reproduction that Pisum sativum undergoes is sexual reproduction because it involves the fusion of male and female gametes.
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The seed formed inside the ovary of the flower. As the seed develops in the flower, water is withdrawn from it so that it becomes almost dry. suggest why is it important?
Answers
Water withdrawal from the developing seed inside the flower is important to induce dormancy, enhance longevity, protect against pathogens, facilitate dispersal, and trigger germination under favorable conditions.
Water withdrawal from the seed during its development inside the ovary is crucial for seed dormancy, longevity, protection, dispersal, and germination. Dormancy enables seeds to survive unfavorable conditions. The dry state reduces metabolic activity, enhancing seed longevity. Withdrawing water creates an inhospitable environment for pathogens, safeguarding the seed. Dry seeds are lighter and more easily dispersed by wind, animals, or water, aiding in the colonization of new habitats. Rehydration of the seed after dispersal triggers germination, initiating growth.Overall, water withdrawal from the seed inside the ovary serves as a survival strategy, allowing seeds to endure harsh conditions, remain viable for extended periods, avoid microbial damage, disperse effectively, and germinate when conditions are favorable.
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Sharks have a disproportionate effect on coral species diversity by keeping weedy algae in check. Sharks are therefore this type of species, which when removed, can lead to dramatic decreases in species diversity. (true or false)
Answers
Sharks are considered a keystone species because they play a critical role in maintaining the balance of the ecosystem they inhabit.
In this case, they keep weedy algae in check by preying on herbivorous fishes that feed on algae-eating organisms. If sharks were to be removed from the ecosystem, the herbivorous fishes would increase in number and consume more algae-eating organisms, which would then allow the weedy algae to grow and outcompete the coral for space, sunlight, and nutrients. As a result, the coral species diversity would decrease, and the ecosystem would become less healthy and productive.
Keystone species are those species that have a disproportionate effect on their ecosystem relative to their abundance. Their removal can cause significant changes to the structure and function of the ecosystem. Some other examples of keystone species include sea otters, beavers, and wolves.
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A hetero gous ail yellow plant is crossed with a homorygous short green. Show the genoype od phenotypes of the Fi offspring and the probability of each.
Answers
The genotype of the F1 offspring is YyTt, and the phenotype is yellow and tall. The probability of each phenotype in the F1 offspring is as follows yellow and tall is 1/2 or 50%, green and short is 1/2 or 50%.
The genotype and phenotype of the F1 offspringGenotype refers to the genetic makeup or combination of alleles present in an organism, while phenotype refers to the observable traits or characteristics expressed by an organism. Genotype represents the genes an organism carries, while phenotype represents the physical or observable features resulting from the interaction between genotype and the environment.
When a heterozygous ail yellow plant (genotype Yy) is crossed with a homozygous short green plant (genotype tt), the F1 offspring will have the genotype YyTt and the phenotype of yellow and tall. The probability of this phenotype occurring in the F1 generation is 50%. Additionally, there is a 50% probability of the F1 offspring having the phenotype of green and short.
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Suppose a human population exhibits a Type III survival curve. What would you expect to happen to the curve over time if a dramatic improvement in medical technology takes place
Answers
Answer:
The curve will become convex
Explanation:
A survivorship curve is a graph that displays the proportion of individuals capable of surviving based on their age ranges or other population parameters such as, for example, the survival rate of males and females. A Type III survivorship curve has a concave shape because individuals exhibit a high death rate immediately after birth. Examples of species that show a Type III curve include, among others, insects, fishes and small mammals.