mitotic spindle is the answer
During anaphase mitotic spindle is attached at the centromere of each sister chromatid because it attaches the chromosome to the opposite spindle pole.
What is the mitotic spindle?Protein complexes connect microtubules to the chromosomal midpoint (the centromere) (kinetochores). The connected microtubules depolymerize and shorten, causing movement that pushes chromosomes toward centrosomes situated at either pole of the cell.
The mitotic spindle is a structure that separates the chromosomes. The mitotic spindle is composed of multiple long proteins known as microtubules that are connected to a chromosome at one end and to the cell pole at the other.
The anaphase stage in the cell cycle prepares to spare sister chromatids reday for moves it toward the opposite spindle pole.
Therefore mitotic spindle is seen centromere of each sister chromatid as they separate and move toward the spindle pole.
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write 2 sentences about the Immune System
Which scientist formulated the theory of evolution.
Answer:
Charles Darwin
Explanation:
The theory of evolution is a shortened form of the term “theory of evolution by natural selection,” which was proposed by Charles Darwin and Alfred Russel Wallace in the nineteenth century.
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First photo of dna which helped scientists understand its structure.
Answer:
Franklin´s Photo 51 helped scientists learn more about the three-dimensional structure of DNA and enabled scientists to understand DNA´s role in heredity. X-ray crystallography, the technique Franklin used to produce Photo 51 of DNA, is a method scientists use to determine the three-dimensional structure of a crystal
Explanation:
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Match the scenario with the type of teaching/learning technique it distinguishes.
1. Cindy uses a treat to get her dog Ruby to sit
2. Buddy the dog hears a bell before getting his food
3. Java the dog is learning to jump on a stool to steal human food
a. Operant Conditioning
b. Insight Learning
c. Classical Conditioning
The matching of the scenario with the type of teaching/learning technique it distinguishes are given below:
Cindy uses a treat to get her dog Ruby to sit ----- Operant conditioning. Buddy, the dog hears a bell before getting his food ----- Insight learning. Java the dog is learning to jump on a stool to steal human food ---- Classical conditioning. What do you mean by Learning techniques?Learning techniques may be defined as a persistent change in the behavior that develops through experience. It can be modified by changing its surroundings.
Some of the behaviors are heritable to the offspring from their parents, while some of them are learned as per the demand of the environment.
Therefore, all the scenarios with the type of teaching/learning technique it distinguishes are matched above.
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Examine the process shown above occurring in a DNA molecule. Which statements support the outcome of this process? Select
ALL that apply.
A)
This process is linked to certain cancer types.
B)
This process can have detrimental results to the organism.
This can create a change to the genome, which produces a new phenotype. Eliminate
D)
This process can be repaired by the DNA and not be a permanent change
to the genome.
E)
This process affects only the offspring of the organism, but not the
organism itself.
A DNA molecule is the molecule which carries genetic information for the development of an organism.
What is DNA?Your information is incomplete. Therefore, an overview of DNA will be given. DNA simply means an organic material that contains genetic information.
DNA is found in the cells of every organism and is a key part of reproduction where genetic heredity occurs.
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Answer:
A, B,C,D
Explanation:
i just did it on usatestprep
If you wanted to see a cell wall, where could you look?.
Answer:
A cell wall is a structural layer surrounding some types of cells, just outside the cell membrane. It can be tough, flexible, and sometimes rigid. It provides the cell with both structural support and protection, and also acts as a filtering mechanism.
Explanation:
A cell wall is a rigid, semi-permeable protective layer in some cell types. This outer covering is positioned next to the cell membrane (plasma membrane) in most plant cells, fungi, bacteria, algae, and some archaea.
When comparing protein-coding DNA sequences of similar genes in related species, you find that some of the sequences are longer in one species compared to the other. Which answer option is the most likely number of extra bases that you would find
The most likely number of extra bases that you would find during changes in protein-coding DNA sequences is one.
What is a Codon?This is defined as a sequence of three nucleotides which form a unit of genetic code in a DNA or RNA.
Since codons have 3 nucleotides then the most likely number of extra bases could be one which will code for a different protein.
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the cell cycle is a repeating sequence of cellular growth and division during the life of
Answer:
The cell cycle is a repeating sequence of cellular growth and division during the life of an organism.
Explanation:
A cell spends most of its time during the first three phases of the cycle. This is called interphase. A cell will ONLY enter the last two phases when it is about to divide. Once again, the cell cycle is a repeating sequence of cellular growth and division during the life of an organism.
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All of earth that is inhabited by life is called the.
Answer:
Biosphere
Explanation:
The portion of the circulatory system governed by the right side of the heart is __________ circulation.
The portion of the circulatory system governed by the right side of the heart is _pulmonary_ circulation.
There are two types of circulation,
systemic circulationpulmonary circulationWhat is pulmonary circulation?Pulmonary circulation is developes between the heart and the lungs.
The pulmonary arthery leaves the heart from the right ventricle, divides into two ramifications, and carries deoxygenated blood from the heart to the lungs.
Once in the lungs, the blood release carbon dioxide and takes oxygen.
Carbon dioxide is released from the body by exhalation. Blood takes oxygen from small air sacs named alveoli.Finally, oxigenated blood returns to the heart through pulmonary veins.
The portion of the circulatory system governed by the right side of the heart is _pulmonary_ circulation.
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The data shows the changes in temperature and the concentration of carbon dioxide (CO2) in Earth’s atmosphere during the past eight hundred thousand years.
Which statement describes the overall relationship between the concentration of carbon dioxide and atmospheric temperature?
A The temperature of Earth increases with a decrease in atmospheric carbon dioxide.
B The temperature of Earth increases with an increase in atmospheric carbon dioxide.
C The temperature of Earth remains unchanged with an increase in atmospheric carbon dioxide.
D The temperature of Earth remains unchanged with a decrease in atmospheric carbon dioxide.
The bulging deposit that forms around the area of the break during the healing of a fractured bone is a.
Glucose is generally used in cells as a source of
a quick energy
b. material for growth
C. material for repair
d. answer not given
Answer:
A quick energy
Explanation:
Most of the cells in your body use glucose along with amino acids (the building blocks of protein) and fats for energy. But it's the main source of fuel for your brain.
How does a successful immigration rate impact the biodiversity of an island?
Answer:
as the number of species present increases, the immigration rate decreases
Explanation:
According to ETIB, the number of species present on an island is determined by a balance between immigration and extinction. Generally, as the number of species present increases, the immigration rate decreases and the extinction rate increases.
A successful immigration rate impact the biodiversity of an island in several ways.
How does a successful immigration rate impact the biodiversity of an island ?By the studies of several scientists, the number of species present on an island is determined by a balance between immigration rate and extinction rate. Generally, as the number of species present increases, the immigration rate increases and the extinction rate decreases. Therefore a successful immigration rate provides the animals and birds to migrate from different parts of the world and settle down in a particular island. Therefore for a greater amount of immigration rate, the biodiversity of the island is maintained in a good order. Therefore for a good immigration rate, the biodiversity of a land is largely increased.
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Consider a food web in which snakes eat mice; toads eat beetles; owls eat mice and toads; eagles eat rabbits, snakes, and owls; cougars eat deer; and foxes eat rabbits and mice. What animal occupies (gets energy in) more than one trophic level
The animal that takes energy from more than one trophic level is eagle due to eating of many organisms.
Which animal gets energy in more than one trophic level?The eagle is the animal that takes energy from more than one trophic level in the given food web because in this food web eagle feeds on animals such as rabbit, reptile such as snake and bird such as owls.
So we can conclude that the animal that takes energy from more than one trophic level is eagle.
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In this case, the owls and eagles are two animals that occupy more than one trophic level in the food web.
What is a trophic level?A trophic level is a specific position in the food web that one population and/or organism occupies in the ecosystem.
An organism can have different roles in an ecosystem and thus occupy more than one trophic level.
Organisms in the first trophic level are called producers, whereas primary consumers are located in the second level.
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Does a prokaryotic cell or a eukaryotic cell seem more simple?.
Answer:
Prokaryotic cells
Explanation:
Prokaryotic cells (Figure below) are usually smaller and simpler than eukaryotic cells. They do not have a nucleus or other membrane-bound organelles.
In carpal tunnel syndrome, the __________ is compressed.
Answer:
Median Nerve
Explanation:
In Carpal Tunnel Syndrome the Median Nerve is compressed. This can cause tingling sensations in the fingers. This is caused by pressure on the nerve.
How were clones created prior to the creation of Dolly?
3.
Using the information from the front page about
Guinea pigs, predict the phenotypic results of a cross
between a heterozygous male and a white female.
Answer:
hm
Explanation:
I wish i knew this and dont just want points
Understanding the Immune System
A _____ is an agent that can cause infections and diseases
Which of the following is true about adaptation?
1. It is random
II. It results from genetic mutations.
III. It creates new types of species.
O I, II and III
O I and II
O ll and III
Ol only
The following which is true about adaptation include the following:
It is random.It results from genetic mutations.It creates new types of species.What is Adaptation?This is the process in which an organism become more suited to its environment as a result of genetic mutations.
This creates new types of species over a period of time and is a random process which is why option A was chosen.
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are chickens or crocodiles close to dinosaurs?
List 3 reasons why
Answer:
chickens because they have the same body shape and because they are descendants of t-rexs
Which part of the upper respiratory system is known as the vocal cords?
A. pharynx
B. larynx
C. trachea
D. bronchi
The part of the upper respiratory system known as the vocal cords is located in the larynx. The correct option is B.
The larynx, commonly referred to as the voice box, is situated between the pharynx (throat) and the trachea (windpipe).
The vocal cords are two folds of mucous membranes within the larynx that vibrate to produce sound when air passes over them, enabling speech and vocalization.
It serves multiple functions, including the production of sound for speech and protecting the airway during swallowing.
The vocal cords are composed of delicate muscle tissue covered by a layer of mucous membrane.
They are positioned horizontally within the larynx, stretching from the front to the back.
When at rest or during normal breathing, the vocal cords are open, allowing air to pass freely through the larynx and into the lungs.
During speech or vocalization, the muscles surrounding the vocal cords tighten, bringing the vocal cords closer together.
As air from the lungs passes through the narrowed gap between the vocal cords, they vibrate rapidly.
These vibrations produce sound waves, which then resonate in the pharynx, mouth, and nasal cavity, allowing us to form words and communicate.
Thus, the correct option is B.
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What is the difference between freshwater standing-water habitats and running-water habitats?.
In situ hybridization can be used to localize a gene of interest due to the ability of a cloned DNA sequence to hybridize to a chromosome through_______.
Answer: In situ hybridization is a technique that is used for localization and detection of specific DNA and RNA sequences in cells, preserved tissue sections, or entire tissue.
the abilty to rapidly and accurately change the direction of movement of the entire body in space is called
Answer:
agility
Explanation:
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What relationship is it when one population captures and feeds upon another population?
Answer:
Predation.
Explanation:
This relationship is called predation. (Predation means the preying of one animal on another)
State and describe two points of evidence that support the theory of evolution
Answer:
DNA and the genetic code reflect the shared ancestry of life. DNA comparisons can show how related species are. Biogeography. The global distribution of organisms and the unique features of island species reflect evolution and geological change.
Explanation:
The rainforest contains what percentage of all of the different species in the world?.
You discover a mutation in the protein-coding sequence of a gene that does not change the amino acid sequence. This makes sense because __________.
there is a redundancy in the genetic code / a silent mutation has occured