Answers
Non-chromosomal microtubules, contractile rings, and polar microtubules are a few examples of cell components that do not require kinetochores to pull them in a dividing cell.
Which stage of cell division may the cell not stop?Phase G2 (Gap 2): In this phase, protein synthesis takes place. Stage of Quiescence (G0): The G1 phase ends and an inactive stage is entered by cells that do not divide anymore. The cell cycle's quiescent stage (G0) is referred to as this phase.
Spindle and kinetochores are they connected?The spindle assembly checkpoint, a cell cycle surveillance pathway that delays chromosome segregation in response to detached kinetochores, receives microtubule-binding status from the kinetochore, which also attaches chromosomes to spindle microtubules and regulates the stability of these attachments.
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Related Questions
Which question can be tested scientifically?
Does humidity affect the decay rate of leaves?
How does a biologist become successful?
What shape are the flowers of a cherry tree?
Are puppies cuter than kittens?
Answers
Why does natural selection occur more when there is competition for resources?
Answers
Natural selection occurs more prominently when there is competition for resources because competition creates selective pressures that drive adaptations and favor certain traits over others.
In any given environment, resources necessary for survival and reproduction, such as food, water, and shelter, are limited. As a result, individuals within a population must compete with one another to obtain these resources.
Competition leads to differential survival and reproductive success among individuals.
Those individuals with advantageous traits or variations that enable them to more effectively acquire and utilize resources have a higher likelihood of survival and producing offspring.
These advantageous traits can be physical characteristics, physiological adaptations, or behavioral strategies that provide a competitive edge.
Through natural selection, individuals possessing beneficial traits are more likely to pass on their genes to the next generation, while individuals with less favorable traits are at a disadvantage.
Over time, this process results in the accumulation of beneficial traits within the population, enhancing their overall fitness and adaptation to the specific environment.
Therefore, competition for resources acts as a driving force for natural selection by selecting for traits that enhance an individual's ability to secure limited resources, survive, and reproduce successfully.
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What is DNA? (Choose all that apply.)
Question 3 options:
deoxyribonucleic acid
a molecule that carries genetic information and is found in every cell
a molecule unique to each individual
a molecule that contains all of the information an organism needs to live and reproduce
ribonucleic acid
Answers
Answer:
im sure its "a molecule unique to each individual"
Explanation:
Base your answers to questions 1 through 3 on the diagram below and on your knowledge
of Earth science. The diagram represents the expansion of a portion of the universe from its
origin until the present. The timeline represents billions of years. Letter X indicates two
celestial objects.
Timeline (billion years ago)
Present T
5-
10-
Origin of
Universe
15-
1. Two pieces of evidence that support the theory that the universe is expanding are the
A) red shift of light from distant stars and the existence of nuclear fusion
B) red shift of light from distant stars and the existence of cosmic background
radiation
C) blue shift of light from distant stars and the existence of nuclear fusion
D) blue shift of light from distant stars and the existence of cosmic background
radiation
polestial objects labeled X are
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The two pieces of evidence that support the theory of the expanding universe are the red shift of light from distant stars and the existence of cosmic background radiation.
The correct answer is option B.
1. Red shift of light from distant stars: The observation of redshift in the light coming from distant galaxies provides evidence for the expansion of the universe. Redshift occurs when the light waves from an object moving away from an observer are stretched, causing a shift towards longer wavelengths. This phenomenon is consistent with the Doppler effect, where the wavelength of light appears to stretch as the source moves away. The redshift of light from distant stars indicates that galaxies are moving away from us and from each other, supporting the idea that the universe is expanding.
2. Existence of cosmic background radiation: The discovery of cosmic background radiation further supports the theory of the expanding universe. Cosmic background radiation is a faint, uniform microwave radiation that permeates the entire universe. It is believed to be residual radiation from the Big Bang, the initial event that is thought to have initiated the expansion of the universe. The presence of cosmic background radiation provides strong evidence for the hot, dense early stages of the universe and its subsequent expansion.
Based on the information provided in the diagram, it is not possible to determine the identity or nature of the celestial objects labeled X. The diagram only represents the expansion of the universe over time and does not provide specific details about individual celestial objects.
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I need 3 evidence and reasoning why more varieties of trees help the orangatans
Answers
Having more varieties of trees in orangutan habitats benefits these primates in multiple ways. It provides increased food availability, ensures nutritional diversity, and contributes to the overall health and sustainability of orangutan populations.
1.Increased Food Availability: Having a greater variety of trees in orangutan habitats provides them with a wider range of food sources. Orangutans are primarily frugivorous, relying heavily on fruits for their diet. Different tree species produce fruits at varying times throughout the year, and having a diverse array of trees ensures a more consistent and reliable food supply. This variety also allows orangutans to adapt to seasonal fluctuations in fruit availability and prevents overexploitation of specific tree species, promoting long-term sustainability.
2.Enhanced Nutritional Diversity: Different tree species offer varying nutritional compositions, including variations in vitamins, minerals, and other essential nutrients. A greater diversity of trees provides orangutans with a broader range of nutrients, contributing to their overall health and well-being. A balanced diet derived from a variety of trees can help address specific dietary requirements and support optimal growth, reproduction, and immune function in orangutans.
3.Improved Habitat and Biodiversity: The presence of diverse tree species creates a more complex and ecologically rich habitat for orangutans. Trees provide important resources beyond just food, such as nesting sites, shelter from predators, and pathways for movement. A greater variety of trees promotes biodiversity by attracting a wider range of other plant and animal species, creating a balanced ecosystem. This biodiversity is crucial for the long-term survival of orangutans as it helps maintain ecosystem stability, resilience, and the availability of resources.
Furthermore, a diverse tree population creates a richer and more resilient habitat, supporting a variety of species and promoting a healthy ecosystem for orangutans to thrive in.
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This is the marine science
I don’t understand
And thank you if you help me
Answers
A cyclonic storm seems to be a violent and very often destructive storm that occurs when the wind moves in a circular pattern at high speeds.
What cause cyclonic storm?Cyclones have been caused by atmospheric disturbances in the vicinity of a low-pressure area, which are distinguished by rapid and often destructive air circulation. Cyclones are frequently accompanied by violent storms and inclement weather.Tropical storms include hurricanes, typhoons, and cyclones. The only distinction is where they form. Hurricanes form in the tropical Atlantic and the Pacific Ocean's eastern equator. Cyclones form south of the equator, off the coasts of Australia and Madagascar, among other places.A tropical cyclone is a rapidly rotating storm system with a low-pressure center, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms causing heavy rain and squalls.To learn more about cyclonic storm refer to :
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ignore this it’s for the c
Answers
3.3 The inheritance of fur colour in cats is sex-linked. The tortoise-shell colour of cats is a combination of black and orange fur. The allele for black fur is represented by X³ and the allele for orange fur is represented by Xº. A female cat with a tortoise-shell colour mates with an orange male cat. HINT: The sex chromosomes/gonosomes in cats are the same as in humans. 3.3.1 Use the symbols X³. X and Y to represent a genetic cross of the mating stated above. Also indicate the proportion of the F₁ phenotypes. Explain why the male kittens can never have the tortoise-shell colour. 3.3.3 Explain why the female kittens can have the tortoise-shell colour. 3.3.2 (7) (2) (2) (11)
Answers
Answer:
The inheritance of fur color in cats is indeed sex-linked. The tortoise-shell color is a combination of black and orange fur. The allele for black fur is represented by X³ and the allele for orange fur is represented by Xº. When a female cat with a tortoise-shell color mates with an orange male cat, the genetic cross can be represented as follows:
Xº Y
X³ X³Xº X³Y
Xº XºXº XºY
The proportion of the F₁ phenotypes would be 1:1 for females (50% tortoise-shell and 50% orange) and 1:1 for males (50% black and 50% orange).
Male kittens can never have the tortoise-shell color because they only inherit one X chromosome from their mother. Since the alleles for black and orange fur are both located on the X chromosome, male kittens can only inherit one or the other, but not both.
Female kittens can have the tortoise-shell color because they inherit one X chromosome from each parent. If they inherit the X³ allele from one parent and the Xº allele from the other parent, they will have both black and orange fur, resulting in a tortoise-shell color.
Explanation:
How is infiltration related to groundwater?
Answers
Answer:
Ground water comes from rain water and snow that land on the surface and perlocate down into the soil and than becomes ground water. Infiltration is the process of the water entering the soil therefore without infiltration ground water wouldn't be able to be made as no water would go through the soil
Explanation:
Basically inflitration is the process of water going through the soil and into the earth and once it goes deep enough into the earth and passes through more soil it is considered groundwater.
What is the mass of the rock?a) 350gb) 54,6gc) 354gd) 354,6g
Answers
The balance used to measure the mass of the rock reads it in three different lines. The first one is related to the first digits, meeaning that the first one will be 3. As it is in a hundred scale, we add the second line, which shows the number 50. At the end, the third line will be added too, showing us the number 4,6. To fully measure, we add the three values, as follows: 300 + 50 + 4,6 = 354,6. Therefore, the correct answer is d) 354,6g.
A group of similar cells that perform a particular function is called a(an) a. organ. c. tissue. b. organ system. d. division of labor.
Answers
Answer:
Tissue
Explanation:
Answer:
The answer is C. Tissue
Thymine in DNA occurs as the result of thymidylate synthase creating _______, which then undergoes _______ to _______, then to _______, and incorporated into D N A by _______. Thymine in tRNA arises ________, by an S-adenosylmethionine-dependent _______ of a ______ residue in RNA.
a. UMP
b. translocation
c. post-translationally
d. dTDP
e. post- transcriptionally
f. hydroxylation
g. DNA synthase
h. phosphorylation
i. methylation
j. GMP
e. CMP
Answers
Answer:
Thymine in DNA occurs as the result of thymidylate synthase creating deoxythymidine monophosphate (dTMP), which then undergoes phosphorylation to deoxythymidine diphosphate (dTDP), then to Deoxythymidine triphosphate (dTTP), and incorporated into DNA by the DNA polymerase (DNA pol). Thymine in tRNA arises post-transcriptionally, by S-adenosylmethionine-dependent methylation of a uridine 5'-monophosphate (UMP) residue in RNA.
Explanation:
Thymidylate synthase is an enzyme involved in de novo DNA synthesis. This enzyme (thymidylate synthase) catalyzes the transfer of the one-carbon group from 5,10-methylene-tetrahydrofolate (5,10-CH2-THF) to deoxyuridine monophosphate (dUMP) and subsequent methylation to produce deoxythymidine monophosphate (dTMP), which is then phosphorylated to deoxythymidine triphosphate (dTTP) by kinases and incorporated into DNA. On the other hand, specific tRNA methylases catalyze the methylation of transference RNA (tRNA) by using S-adenosylmethionine as a methyl donor. Since tRNA methylation is a post-transcriptional modification, this chemical reaction is considered an epitranscriptomic modification on the RNA molecule.
Cellular respiration concept map
Answers
Answer:
This cellular respiration concept map from Byjus might help you.
Explanation:
Which of the following is NOT a characteristic of organisms found in the animal kingdom?
Question 3 options:
Eukaryotic cells
Cell walls contain cellulose
Multicellular
Heterotrophic
Answers
Multiple Choice
Which of the following was the commonly held idea before Galileo's experiment of dropping weights off the Tower of Pisa?
O Lighter objects fall faster than heavier objects
O Objects fall at different speeds based upon volume, not mass
O Objects fall at the same speed regardless of mass
O Heavier objects fall faster than lighter objects
Answers
Third Answer: Objects fall at the same speed regardless of mass
Explanation:
The government arrested him for this.
The original bacteria kingdom was divided into two separate kingdoms based on analysis of their RNA sequences
Answers
rRNA gene sequence Two new kingdoms called Eubacteria and Archeabacteria were proposed by Woese and his colleagues as a division of the original bacteria kingdom.
what are bacteria kingdom?The kingdom of bacteria is made up of small, single-celled organisms that can exist alone or in colonies. Previously known as the Monera Kingdom, bacteria are single-celled prokaryotic creatures. Eubacteria and archaea are two of the domains that make up bacteria.
what is Eubacteria?Prokaryotic organisms, or those without a membrane-bound nucleus, are what make up eubacteria. They are primarily unicellular and have single cellular DNA chromosomes. If they are motile, they typically have flagella and have peptidoglycan in their cell walls.
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PLEASE HELP!! FORENSICS!
Several body patterns can be used to link an individual to a crime scene, including fingerprints. Use the terms "arch," "loop," "whorl," "composite," and three examples of minutiae to describe your fingerprints. Proper spelling, grammar, and sentence structure are expected.
Answers
Answer:
isx this a quiz or what
Explanation:help needed
Properties of water Classify each statement as an example of adhesion, cohesion, or surface tension. Match each statement to the appropriate category.
a. A sewing needle floats when it is placed gently on top of water in a bucket.
b. Water molecules ding to plant cell walls. A water strider runs across a pond without breaking the surface.
c. A drop of water spilled on a table forms a drop on the table, rather than spreading out over the surface.
d. Water molecules cling to the side of a beaker. Water molecules are attracted to each other.
Answers
Answer:
c
Explanation:
Question 1 A heterozygous yellow-seeded plant is crossed with a homozygous yellow seeded plant. i. ii. Question 2 Complete the punnet square and write the genotypic and phenotypic ration for the possible offsprings. (3 marks) Genotypic ration Phenotypic ration What is the probability of having a pure breeding green seeded offsprings (2 marks) What is the probability of having a yellow-seeded plant in F2 generation, when a true breeder from F1 is crossed with a non-true breeding yellow seeded plant? (2 marks)
Answers
Answer:
Explanation:
To solve this problem, let's represent the heterozygous yellow-seeded plant as "Yy" and the homozygous yellow-seeded plant as "YY."
i. When crossing a heterozygous yellow-seeded plant (Yy) with a homozygous yellow-seeded plant (YY), we can set up a Punnett square to determine the possible offspring genotypes:
Y Y
y Yy Yy
y YY YY
ii. The genotypic ratio is 2:2 or 1:1 for the possible offspring genotypes: Yy and YY.
The phenotypic ratio is also 2:2 or 1:1 for the possible offspring phenotypes: yellow-seeded (YY and Yy).
Question 2:
To determine the probability of specific outcomes, we need additional information about the parental genotypes and their inheritance patterns. Please provide the genotypes of the true breeder from F1 and the non-true breeding yellow-seeded plant for a more accurate calculation.
which factors make sequencing by the sanger chain-termination method possible? select all that apply.
Answers
The factors that make sequencing by the Sanger chain-termination method possible include a DNA strand whose 3' end terminates in a dideoxynucleotide cannot be elongated and new nucleotides are added only to the 3' end of a growing DNA strand (Option c and e).
What is the Sanger chain-termination method of DNA sequencing?The Sanger chain-termination method of DNA sequencing is a procedure used to obtain the linear order of nucleotides in the DNA molecule, which involves the use of dideoxynucleotides that stop the process of elongation and then electrophoresis to determine the order in the nucleotide sequence.
Therefore, with this data, we can see that the Sanger chain-termination method of DNA sequencing is based on the use of dideoxynucleotides that stop the process of elongation of the DNA sequence.
Complete question:
Which factors make sequencing by the sanger chain-termination method possible? select all that apply.
a. Complementary single-stranded nucleic acid sequences can come together to form a duplex molecule.
b. Single-stranded nucleic acid molecules can be immobilized on certain types of filter paper.
c. A DNA strand whose 3' end terminates in a dideoxynucleotide cannot be elongated.
d. Duplex nucleic acid molecules can be separated by size by means of electrophoresis.
e. New nucleotides are added only to the 3' end of a growing DNA strand.
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You've read about how the structures of various organisms allow the organism to function in its environment. Now it's time for you to conduct a field study. You will take on the role of a biologist, a scientist who studies living things and the issues that affect them.
Answer the following Question below in Response Box.
Would the structure of one organism's parts work on a different organism you chose? Explain.
Answers
The structure of one organism cannot work on a different organism because the immune system will recognize it as an invading structure.
What is an immune reaction?An immune reaction is a natural defensive reaction by which an organism reacts to foreign structures and/or pathogenic organisms.
In the case of transplantation, immune reactions may lead to rejecting the organ due to antigen incompatibility.
In conclusion, the structure of one organism cannot work on a different organism because the immune system will recognize it as an invading structure.
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1. An enucleated cell
Answers
A scientist wants to examine a genetic disease in humans. The scientist hypothesizes that the disease can be treated by using gene therapy. Humans take a long time to reproduce and develop, so the scientist will have to
give up on testing the hypothesis.
test the hypothesis for a very long time.
develop new methods to test the hypothesis.
find a way to make humans reproduce faster.
Answers
Answer:
answer is B
Explanation:
its on edg
Answer: C. develop new methods to test the hypothesis.
Explanation:
The removal of which of the following organisms would most reduce the transfer of energy
from aquatic organisms to terrestrial organisms?
Answers
Answer:
Food chain and food webs
An amino acid's unique characteristics is defined by the ________.
Answers
Golgi apparatus is involved in processing of:
a. Salivary amylase
b. Glucokinase
c. Phenylalanine hydroxylase
d. EcoR1
Answers
Answer:
Explanation:
the Golgi apparatus is involved in the processing of :
salivary amylase
this is because the GC is involved in the secretion of proteins and salivary amylase is protein secreted from the salivary glands
Why are barriers to gene flow necessary for speciation?
Answers
Answer:
Allopatry may start the process off, but the evolution of internal barriers to gene flow is necessary for specialization to be complete. Specialization requires that the two incipient species be unable to produce viable offspring together or that they avoid mating with members of the other group.
Explanation:
hope this helps
use the diagram of the geologic time scale to list the different divisions of time, beginning with the largest division, the eon.
Answers
The geological time scale is a representation of time based on the rocks. It is divided into different eras and periods depending upon the change in the environmental conditions.
What is the geological time scale?The geological time scale (GTS) is a representation of time which is based on the rocks which have been recorded on the Earth. Geological time scale is a system of chronological dating which uses the chronostratigraphy, the process of relating strata to time period and geochronology, the scientific branch of geology which aims to determine the age of rocks.
Geologic time scale is used primarily by the scientists on the Earth including geologists, paleontologists, geophysicists, geochemists, and paleoclimatologists to describe the timing and the relationship of events in the geologic history.
The different era and periods of the geological time scale is attached with the answer here.
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g Bacterial genomes contain small transposable elements termed ____________ that resemble transposons of eukaryotic cells.
Answers
Answer:
Bacterial genomes contain small transposable elements termed Jumping Genes that resemble transposons of eukaryotic cells.
Explanation:
Jumping genes are small parts of the DNA that program enzymes and move it from one DNA location to another, sometimes on the same molecule of DNA sometimes on another molecule.
Cheers!
Question 2
Which property of water is the result of an uneven distribution of electrons?
Answers
Answer:
Polarity
Explanation:
Water, is a chemical compound with the formula H2O. It posseses properties that makes it a unique substance on Earth. Among these properties is its POLAR NATURE. Polarity of a molecule refers to the separation of electric charges into dipole moment having an opposite charges at the end.
The polarity of water molecule is attributed to the uneven distribution of electrons in the atoms that forms it. Oxygen is a more electronegative atom than hydrogen, hence, it pulls most of the electrons towards itself, making hydrogen atom more electropositive. This forms the polar property of water.