What cytoskeletal elements are responsible for pinching the cytoplasm during cytokinesis?
Answers
The cytoskeletal elements responsible for pinching the cytoplasm during cytokinesis are actin filaments and myosin motor proteins.
The step-by-step explanation:
1. During cytokinesis, actin filaments and myosin motor proteins assemble to form a contractile ring.
2. The contractile ring is located at the cell equator, which is the midpoint between the two daughter nuclei.
3. As cytokinesis proceeds, the actin filaments and myosin motor proteins interact, causing the contractile ring to contract.
4. The contraction of the contractile ring leads to the pinching of the cytoplasm, eventually resulting in the formation of two separate daughter cells.
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Related Questions
What are the characteristics of prokaryotes? A prokaryote lacks a well-defined nucleus. A prokaryote cannot perform basic life functions. A prokaryote lacks cell organelles. A prokaryote is larger than a eukaryote.
Answers
Answer:
Lacks an well defined nucleus
Explanation:
Answer:
Answer:
Lacks an well defined nucleus
Explanation:
Explanation:
4. Chemical process that converts glucose wit
oxygen into energy (ATP) and carbon dioxide.
Answers
Cellular respiration is the process responsible for the conversion of glucose in the presence of oxygen into energy (ATP) as well as carbon dioxide.
Cellular respiration involves the breakdown of food materials inside the cell in order to release energy. Glucose is the substrate for the process of cellular respiration. The first stage of cellular respiration takes place in the cytoplasm. The glucose molecule is broken down through a series of enzyme-catalyzed reactions into two molecules of pyruvic acid, which is termed as Glycolysis.
The process of cellular respiration includes several bio-chemical reactions but it can be summarized in the form of following equation:-
C6H12O6 + 6O2 → 6CO2 + 6H2O + Energy (ATP)
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a cell with 12 pg in the nucleus during prophase 1 of meiosis 1. how many will be present in the nucleus of a haploid gamete?
a) 12 pg
b) 24 pg
c) 6 pg
d) 8 pg
Answers
The nucleus of a haploid gamete will have 6 pg during prophase 1 of meiosis 1. The answer is c.
During prophase 1 of meiosis 1, the cell undergoes DNA replication, resulting in duplicated chromosomes. Each chromosome consists of two sister chromatids, so the total amount of DNA in the nucleus is doubled. In this case, the cell initially had 12 pg of DNA in the nucleus during prophase 1.
In meiosis, there are two rounds of cell division, resulting in the production of haploid gametes. During the first division (meiosis 1), homologous chromosomes separate, reducing the chromosome number by half. However, the DNA content remains the same because the sister chromatids are still attached.
In the second division (meiosis 2), the sister chromatids separate, resulting in four haploid daughter cells. Each daughter cell receives half of the DNA content present in the initial cell. Therefore, in a haploid gamete, the amount of DNA in the nucleus will be half of the initial amount, which is 6 pg in this case. Therefore, the correct answer is C.
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a researcher wanted to create a loss of function mutation for studying type i diabetes in a model animal. what mutation might mimic the effects of type i diabetes?
Answers
A loss-of-function mutation is a genetic mutation that makes a gene product less effective or entirely ineffective. In order to analyze the pathological mechanisms underlying type 1 diabetes, scientists have attempted to develop disease models utilizing mutant mice that harbor spontaneous and targeted gene mutations.
A loss-of-function mutation is a genetic mutation that makes a gene product less effective or entirely ineffective. In order to analyze the pathological mechanisms underlying type 1 diabetes, scientists have attempted to develop disease models utilizing mutant mice that harbor spontaneous and targeted gene mutations. The best mutant mice are those that exhibit diabetes, and these mice have been critical to gaining a better understanding of the molecular mechanisms underlying the disease.
To mimic the effects of type 1 diabetes, researchers would likely create a loss-of-function mutation in a gene that is critical for insulin synthesis or insulin release. Insulin is a hormone that regulates blood sugar levels, and people with type 1 diabetes have insufficient insulin production due to the destruction of the insulin-producing beta cells of the pancreas. Mutations in genes such as insulin, glucagon, and somatostatin, which are critical for the regulation of blood sugar, are frequently used to generate diabetic mouse models.
In summary, a loss-of-function mutation in a gene critical for insulin synthesis or insulin release would likely mimic the effects of type 1 diabetes. The exact gene and the nature of the mutation will vary based on the particular research objectives.
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Which statement summarizes Kepler's First Law of Planetary Motion?
A. Planets in the solar system revolve around the sun.
B. Planets closest to the sun move faster in their orbits than those farther away.
C. Planets move fastest while Earth is at perihelion.
D. Planets revolve around the sun in elliptical orbits.
Answers
Answer:
D.
Explanation:
Kepler First law – The Law of Orbits According to Kepler’s first law,” All the planets revolve around the sun in elliptical orbits having the sun at one of the foci”.
The statement summarizes Kepler's First Law of Planetary Motion - D. Planets revolve around the sun in elliptical orbits.
Kepler's three laws describe the planetary bodies orbit about the Sun. The planets' orbits all are aligned to called the ecliptic plane.
Kepler's First Law:
The orbit of each planet about the Sun is an ellipse. The Sun's center is always located at one focus of the orbital ellipse.The planet follows the ellipse in its orbit, which explains that the planet to Sun distance is constantly changing as the planet revolves around its orbit.Thus, the statement summarizes Kepler's First Law of Planetary Motion - D. Planets revolve around the sun in elliptical orbits.
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A man who has male pattern baldness (X^bY) marries a woman who does not carry the allele (X^BX^B). What genotypic ratios would be expected of their children?
Answers
Answer:
2\(X^BX^b\):2\(X^BY\)
Explanation:
The genotypic ratio of expected of their offspring would be 2\(X^BX^b\):2\(X^BY\).
From the illustration, the genotype of the man with male pattern baldness is \(X^bY\) while the genotype of the woman without the baldness allele is \(X^BX^B\).
Crossing the two genotypes in marriage:
\(X^bY\) x \(X^BX^B\)
Progeny: \(X^BX^b\) \(X^BX^b\) \(X^BY\) \(X^BY\)
Hence, the genotypic ratio of the offspring becomes:
2\(X^BX^b\):2\(X^BY\)
Please help! Show work please!
Answers
Answer:
7. 18m = 1800 cm = 18×10² cm
8. 23 dm = 0.23 hm
9. 5 cm = 50 mm
10. 5.3 hL = 530000 mL
11. 167 mm = 0.167 m
12. 1.589 daL = 158.9 dL
13. 35.45 mg = 0.0003545 hg
14. 43 dam = 4300 dm
15. 500 kg = 500000 g
16. 700mL = 0.0007 KL
17. 130 dag = 1.3 kg
18. 59.932 mm = 59.932 × 10 –⁵ km = 59.932 × 10^–5 km
* Note; 1 m —> 100 cm1 dm —> 0.001 hm1 cm —> 10 mm1 hL —> 100000 mL = 10⁵ mL1mm —> 0.001 m1 dal —> 100 dL1 mg —> 0.00001 hg = 10^–5 hg1 dam—> 100 dm1 kg —> 1000 g1 mL —> 0.000001 kL = 10^–61 dag —> 0.01 kg1 mm —> 0.00001 km = 10^–5 kmI hope I helped you^_^
Displacement occurs when an object in or on water pushes some water
aside, even if just a little.
A. True
B. False
Answers
Answer:
A. True
Explanation:
bcoz Displacement occurs when an object in or on water pushes some water
aside, even if just a little.
Answer:
A. True
Explanation:
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What happens when a a group of frogs is only male(female)
Answers
Answer:
Nothing happens
Explanation:
There can be groups that has male + female frogs.Frogs can change their gender.Answer:
Nothing happens....
Explanation:
•Frogs remain together only a short time during amplexus, typically about 20 minutes.
•Frogs can change their gender.
which of the following specialized structures/inclusions would aquatic photoautotrophic bacteria most likely possess? 1. thylakoids 2. slime layer 3. carboxysomes 4. gas vacuoles 5. chloroplasts a. 1, 2, 3, 4 b. 1, 3, 4 c. 1, 2, 3, 4, 5 d. 1, 3, 4, 5 e. 1, 2 f. 3, 4
Answers
Aquatic photoautotrophic bacteria are most likely to have the following specific structures/inclusions: thylakoids, carboxysomes, and gas vacuoles.
The cytoplasm of a cell contains polysomes. Because they don't have a nuclear membrane, bacteria can produce polysomes. Polysomes are groups of two or more ribosomes that function in succession to convert mRNA into proteins. The rate at which a new ribosome is loaded into the polysome can be influenced by nearby ribosomes. When ribosomes and elongation factors create the encoded polypeptide during the elongation phase, polysomes are created. A polysome is formed when many ribosomes travel along the coding region of mRNA. The fact that an mRNA molecule can be processed by several ribosomes accounts for the low level of mRNA abundance in cells.
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Select the correct answer from each drop down menu.
During an experiment, readings for blood pressure in a person's body were found to be constant. However, when measured by a
different blood pressure cult, the readings differed by 15 points for each reading. This difference indicates that the results are
but not
Reset
Next
dimentum. All rights reserved
Answers
Answer:
The results are precise but not accurate
Explanation:
Precision is the term that refers to the degree of agreement between measured results. This means that the measurements of the finished system are very similar and with equal differences, under the same conditions.
An example of this is the results shown in the question above, which are very similar. In addition, these results do not have the "real and absolute value" and therefore are not accurate.
an electrical signal generated in the retina travels along a specific pathway in the nervous system to reach the visual cortex in the brain. which term describes that pathway?
Answers
An electrical signal generated in the retina travels along a specific pathway in the nervous system to reach the visual cortex in the brain is the sensory projection pathway.
It is an anatomical pathway (nerves, tracts, etc.) along which a sensory signal travels on its way to the brain.
A sensory path is a set of instructions for children to follow that are shown by marks on the floor or walls. Students burn off extra energy and hone their gross motor skills as they follow the trail and finish the tasks. The pons serves as the synapse for all sensory channels to the cerebral cortex. a route via which sensory impulses are transmitted from sense organs or receptors to the brain's or spinal cord's sensory or reflex centers.
According to research, sensory play strengthens the connections between neurons in the child's brain, enabling them to successfully complete more challenging learning tasks. Fine and gross motor development, cognitive expansion, problem-solving abilities, language development, and social interaction are all supported by sensory play.
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Si se toma un gallo morado (raza andaluza) y se cruza con una gallina blanca de la misma raza, los polluelos serán azules. Al cruzar estos polluelos entre sí, se obtendrá la relación fenotípica de
Answers
Answer:
Más pollitos son de color púrpura, algunos son híbridos, significa diferente color y pocos pollitos tienen color blanco.
Explicación:
Si se toma un gallo morado (raza andaluza) y se cruza con una gallina blanca de la misma raza, los polluelos serán azules. Al cruzar estos polluelos entre sí, la relación fenotípica es diferente en su descendencia. Más pollitos son de color púrpura, algunos son híbridos, significa diferente color y pocos pollitos tienen color blanco. Esto se debe a que el color púrpura tiene un alelo dominante debido a que más pollitos tienen color púrpura y menos pollitos tienen color blanco debido al alelo recesivo.
FIRST ONE TO ANSWER GETS BRAINLEST ANSWER How does the skull's structure help it perform its function?
a. The skull has marrow in it which produces blood cells
b. The skull has sharp teeth which are used in eating
c. The skull is hard which protects the brain from being injured
d. The skull is flexible which allows the brain to grow
Answers
Answer:
c. The skull is hard which protects the brain from being injured
Explanation:
Answer:
The one that makes sense is C.) "The skull is hard which protects the brain from being injured." here's why:
Explanation:
The skull performs vital functions. Mainly, it supports and protects the head's soft tissues. The baby's skull is soft but as the bones developed, the bones of the skull form a tough, fibrous membrane and slowly fuse to form a single skull. The mandible is the only bone that separates from other parts of the skull. The skull or known as the cranium in the medical world is a bone structure of the head. It supports and protects the face and the brain. The adult skull has a total of 22 individual bones. They don’t move and united into a single unit. The skull performs vital functions. Mainly, it supports and protects the head’s soft tissues. The baby's skull is soft but as the bones developed, the bones of the skull form a tough, fibrous membrane and slowly fuse to form a single skull. The mandible is the only bone that separates from other parts of the skull. So, as our cranium grow it gets tough enough to protect the brain from injury!
hopefully I helped! have a great day!
urine: what is found in normal urine? ureter: the ureters are muscular tubes extending from the kidneys to the base of the . the wall of the ureter is composed of three layers, what are they? muscular waves convey urine to the urinary bladder where it passes through a flaplike valve in the mucous membrane of the urinary bladder.
Answers
The three layers of the ureter's wall are the inner mucosa layer, the middle muscular layer, and the outer Adventitia layer. Muscular waves help propel urine through the ureters to the urinary bladder, where it passes through a flaplike valve in the mucous membrane.
Inner Mucosa: The innermost layer is the mucosa, which is composed of transitional epithelium. This layer lines the inside of the ureter and helps prevent urine from leaking back into the kidneys.
Middle Muscular Layer: The middle layer is the muscular layer, consisting of smooth muscle fibers. These muscles contract in wave-like motions (peristalsis) to propel urine from the kidneys to the urinary bladder.
Outer Adventitia: The outermost layer is the adventitia, which is a fibrous connective tissue layer. It provides structural support and protection to the ureter.
As urine reaches the urinary bladder, it passes through a flap-like valve called the ureterovesical valve, which is located in the mucous membrane of the bladder. This valve prevents urine from flowing back up into the ureters and kidneys.
Urine: Normal urine consists of 95% water and 5% dissolved substances, including urea, uric acid, various electrolytes (like sodium, potassium, and chloride), and small amounts of glucose and amino acids.
Ureter: The ureters are muscular tubes extending from the kidneys to the base of the urinary bladder.
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If poorly drained soils encourage the growth of bacteria that convert nitrate to nitrogen, the effect on higher plants will be to
Answers
Poorly drained soils create an anaerobic condition, a reduction in oxygen, and encourage the growth of bacteria that convert nitrate to nitrogen. In poorly drained soils, the reduction of oxygen slows down the activity of nitrate-reducing bacteria and enhances the activity of denitrifying bacteria, which lead to the conversion of nitrate to nitrogen.
The effect of this conversion is highly disadvantageous to higher plants as plants require nitrates as a source of nitrogen for growth. Nitrogen is an essential nutrient for plants and must be present in the form of nitrate to be used by them. If nitrate is converted into nitrogen in the soil, it is rendered useless for the plants.
This would result in a decrease in the growth rate and development of the plant. Therefore, poorly drained soils can have a negative impact on plant growth, especially if the soil is anaerobic and has an abundance of denitrifying bacteria converting nitrates to nitrogen.
Plants need nitrogen in the form of nitrates as it is a necessary component in the synthesis of proteins, amino acids, and chlorophyll. Nitrogen is a limiting nutrient in most soils, so it is essential that it is available in the form of nitrate for higher plants to absorb.
When nitrate is converted into nitrogen, it reduces the amount of nitrogen available for plants and therefore, negatively impacts the growth and development of higher plants. In summary, poorly drained soils have a detrimental effect on higher plants as they lead to the conversion of nitrate to nitrogen, which is unusable by the plant. The reduction in the availability of nitrogen can lead to a decrease in plant growth and development.
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Mini Brain ProjectDirections: Conduct research on a selected brain area or structure. Areas and structures available for research include: frontal lobe, parietal lobe, temporal lobe, occipital lobe, medulla, pons, cerebellum, reticular formation, thalamus, hypothalamus, limbic system, cerebrum, hippocampus, amygdala, corpus callosum, Broca’s area, OR Wernicke’s area. Conduct research using scholarly Internet sources, library sources, and the textbook. What are its major functions? What techniques are used to view or measure it?What other structures is it near?What other structures help or perform similar functions?
Answers
Parietal lobe is one of the main lobes in the brain which is located at the upper back area in the skull. It process sensory information that it accepted from the outside world that is associated to touch, taste, and temperature. The techniques used to view the parietal lobe are Positron emission tomography (PET) and functional magnetic resonance imaging (fMRI).
Parietal lobe is near the top and center of the cerebral cortex just at the back of the frontal lobe and at the top of the occipital and temporal lobes.
The occipital lobe help the parietal lobe in visual perception and processing including spatil navigation and reasoning.
Maya Is a carrier for albinism, a recessive tralt that results in the absence of the skin plgment melanin In halr and
eyes. She marries Jack, and they have four children: Zach, Olivia, Sophla, and Veronica. Veronica expresses the
tralt for albinism, but her three siblings are unaffected by the recessive tralt.
Draw a pedigree that Illustrates the famlly's tralts, and upload your pedigree.
Answers
Answer:
hereditary
Explanation:
if Maya tralt if albinism is recessive, then definitely the tralt for Jack is dominant
In discussions of untapped human potential, it is commonly said that the average person uses only 10% of his or her brain. Is this conclusion likely correct? Explain your answer in terms of natural selection. 200 + words
Answers
Answer:
Natural selection is a mechanism by which populations adapt and evolve.
In its essence, it is a simple statement about rates of reproduction and mortality: Those individual organisms who happen to be best suited to an environment survive and reproduce most successfully, producing many similarly well-adapted descendants. After numerous such breeding cycles, the better-adapted dominate. Nature has filtered out poorly suited individuals and the population has evolved.
VISTA
Natural selection is a simple mechanism that causes populations of living things to change over time. In fact, it is so simple that it can be broken down into five basic steps, abbreviated here as VISTA: Variation, Inheritance, Selection, Time and Adaptation.
Explanation:
When a car traveling at 30 m/s hits the gas pedal, it speeds up to 65 m/s in 3.5 sec. What is the
car's acceleration during that time?
Answers
Answer:
10 m/s2
Explanation:
A researcher is trying to estimate how many trout there are in a 1,000-acre lake. She counted the trout in three 50-acre areas and recorded 88, 80, and 57 trout. What is the approximate size of the trout population?
Answers
approximately 550 trout population present in the lake.
what is population ?A discrete accumulation identifiable characteristics such as people, animals with the objective of analysis and data collection is called a population.
A population consists of a same group of species who reside in a particular geographical place with their reproductive capacity to interbreed.
when individuals in local populations spread between other local populations called as metapopulation.
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Answer: The correct answer is 1,500
Explanation:
The available answers to this question are:
225
1500
3750
4500
Average the recorded trout:
Avg = (88 + 80 + 57) / 3 = 75
Sample size = 50 acres
Lake size = 1,000 acres
Number of samples = 1000 / 50 = 20
Use the average for population:
75 * 20 = 1,500
List 3 functions of a government of a country
Answers
Answer:
What Are The Functions of Government?
1. Protect the Natural Rights. The primary functions of government are to protect the basic human rights which include right to life, liberty and to possess property.
2. Defend Against External Enemies. War across nations has been a constant condition since the beginning of civilization.
3. Managing Economic Conditions.
Explanation:
the graph shows the changing levels of hormones during menstruation and ovulation. in general, what happens to the hormone levels between days 21 and 27, just prior to menstruation if the egg was not fertilized?
Answers
During days 21 and 27, just prior to menstruation, the levels of hormones (estrogen and progesterone) will decrease if the egg was not fertilized. Estrogen and progesterone are hormones that help to thicken the lining of the uterus to prepare for possible fertilization.
If fertilization does not occur, the body stops producing these hormones and the lining of the uterus begins to thin and break down. This process is known as menstruation. As the levels of estrogen and progesterone decrease, other hormones (FSH and LH) are released that trigger the release of an egg.
If the egg is not fertilized, the process begins again and the levels of estrogen and progesterone start to decrease.
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6. Predict and explain what will happen to a patient with type O blood when they receive
a transfusion from a type A donor.
Answers
Answer:
Agglutination would occur because a person with type O blood cannot receive A blood because they have A antibodies
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an onion (the part we eat) is not a root but an underground stem with fleshy leaves which is technically called a
Answers
An onion (the part we eat) is not a root but an underground stem with fleshy leaves which is technically called a tunicate bulb.
There are five main components in a genuine bulb. The basal plate, the main storage tissue, the tunic, the stem, the developing flower and leaf buds, the lateral buds, which develop into bulblets or offsets, the fleshy scales, the primary storage tissue, and the basal plate.
Tunicate bulbs and imbricate bulbs are the two types of true bulbs. The scales on a tunicate bulb are shielded by a tunic, which resembles paper and shields them from mechanical harm.
An example of tunicate bulbs.
Tulips, daffodils, hyacinths, grape hyacinths, and alliums are exemplary tunicate bulbs.
Numerous plants, like daffodils, create new bulbs all around the parent bulb. These bulbs, known as offsets, grow from buds inside the mother bulb's base and produce additional plants.
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in every human, the right kidney is lower than the left one. why?
Answers
Answer:
The right kidney is 2-8 cm lower than the left Kidney, because of the large liver which sits superior to it.
Explanation:
Does anyone know the answers for this and a possible explanation on how you got it?
Answers
Answer:
10. BB and EE
11. Aa, Dd and Gg
12. cc and ff
13. Aa, BB, Dd and Gg
14. cc and ff
Explanation:
The capital letters are the Dominant genes and the lower case letters are the recessive genes.
Homo in homozygous means same and hetero in heterozygous.
This means that the homozygous dominant means 2 of the same dominant genes and same for recessive as well.
In the heterozygous it means to select the ones that have both dominant and recessive genes
The phenotypes is the appearance of what your talking about plants for example if it has Dd or DD genes it has a dominant trait appearance but can still pass on recessive genes if it was Dd. The recessive phenotypes will only appear recessive if it has 2 recessive genes such as dd.
Types of electron carriers found in the electron transport chain of the inner mitochondrial membrane do NOT include:
Answers
The types of electron carriers found in the electron transport chain of the inner mitochondrial membrane that do NOT include are the following below: Complex IV is not an electron carrier, but rather a terminal electron acceptor. Additionally, oxygen serves as the terminal electron acceptor of the ETC, where it is reduced to water.
The electron carriers found in the electron transport chain of the inner mitochondrial membrane are complex I, II, III and Coenzyme Q. These electron carriers play vital roles in the movement of electrons in the electron transport chain from lower to higher potential energy levels.
Here are the main answers to your question:
Types of electron carriers found in the electron transport chain of the inner mitochondrial membrane do NOT include Complex IV, which is not an electron carrier, but rather a terminal electron acceptor.
An electron transport chain (ETC) also known as the respiratory chain is a sequence of electron carrier molecules that shuttle electrons down a series of redox reactions that ultimately couples electron transfer with proton pumping across the inner mitochondrial membrane.
The ETC involves four large protein complexes (Complex I-IV) with an external mobile electron carrier (Coenzyme Q) and an internal mobile electron carrier (Cytochrome C). The ETC comprises the final stage of aerobic respiration and generates most of the ATP produced by cells. The electron transport chain contains various electron carriers, but there is only one type of electron that is transferred in this chain.
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According to the concept of entropy, what will likely happen to most molecules over time? A.They will bind to other molecules. B.They will break down. C.They will remain unchanged. D.They will turn into carbon molecules.
Answers
Answer:
B.They will break down.
Explanation:
Entropy is defined as the thermal energy per unit temperature that contribute to doing useful work in a system. The concept of entropy says that entropy is measured by the random or disordered motion of molecules of a system.
As the entropy will increase over time, the molecules will break down into two or more due to the random and disordered motion of molecules.
Hence, the correct answer is "B.They will break down.".
I need this ASAP it’s on a.p.e.x
Answers
The correct answer is C. Gardeners choose which plants they let reproduced based on the plant traits.
Explanation:
In general, selective breeding involves the intervention of humans in the reproduction of species, this includes mainly plant and animal species. Moreover, in selective breeding, humans choose which specific species or individuals reproduce to favor certain traits. For example, a farmer might allow only the biggest cows to reproduce because this will lead to bigger calves. In this context, the option that shows selective breeding is C because this shows the intervention of humans in reproduction by selecting the individuals that will reproduce.