Answer:
anaphase
Explanation:
Mitosis or meiosis with cohesion proteins still holding sister chromatids together during anaphase.
If I were given additional credit for discovering a model of chromosomes splitting when sister chromatids were still linked, I would seek for a mitotic model in early anaphase. Sister chromatids, duplicated chromosomes, separate and move to opposing cell poles in anaphase, the third stage of mitosis.
Early anaphase sister chromatids are still joined at the centromere region, giving the impression of being attached while separating. This model shows how chromosomal segregation ensures precise genetic material distribution to daughter cells during cell division. Maintaining cell genetic integrity requires this phase.
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The best action humans can take to decrease the effect of harmful growth and reproduction of algae is to:.
Control fertiliser usage; this action will show a high decrease in the effect of harmful growth of algae
How will it work?
The fertilisers are chemical or biological mixtures that provide the essential inorganic and organic nutrients that a soil ordinarily lacks yet that plants need for healthy growth and crop production.
Increased fertiliser use has the potential to contaminate both land and water. Due to the addition of fertiliser minerals to the nearby water body as a result of surface runoff, plants and algae flourish excessively due to the availability of nutrients. Eutrophication is the term for this phenomenon.
As a result, fertilisers should only be used in limited quantities to prevent eutrophication.
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10. What's an Environmental Impact Statement (EIS)?
O A. It's a document used as evidence in court to prosecute polluters.
O B. It's a document used to communicate to the public about the state of the environment.
C. It's a document that must be submitted annually by any company with a permit to demonstrate that they're following regulations.
O D. It's a document that describes the effects proposed activities might have on the environment.
Answer: D. A document that describes the effects proposed activities might have on the environment
Explanation: An Environmental Impact Statement describes and analyzes a proposed action which may have a significant impact on the environment. I don’t know how to explain it any better.
The table below shows the radioactive decay of' a 10 kg sample of carbon-14. Create a graph using the data
below. Label the x-axis "Number of half-lives." Label the y-axis "Amount of isotope (g)." Plot the decay of
carbon-14 in terms of half-lives. Each half-life for carbon-14 is about 5,700 years.
Years passed
0
5,700
11,400
17,100
22,800
Carbon-14 (g)
10,000
5,000
2,500
1,250
625
Years passed
28,500
34,200
39,900
45,600
$1,300
Carbon-14 (g)
312
156
78
39
20
C-14 half-life is the time it takes for half of the isotope mass to decay into its daughter form. Line graphs are the best way to represent data about half-lives and the amount of isotope (gr).
What is Carbon 14?Carbon 14, also known as radiocarbon, is a radioactive carbon isotope.
Isotopes are the atoms of the same element -carbon- that vary in neutrons and, hence, in their massic number. They are alternative forms of the same element.
The radioactive C14 nucleus contains 6 protons and 8 neutrons and has a half-life of 5730 years.
The term half-life is a reference. It means that an organism that has been dead for 5730 years has half the C14 amount or concentration than the same organism had when it was alive.
In other words, the half-life is the time it takes for half the mass of this isotope to become its daughter form.
Knowing the half-life of an element is useful to determine the age of the dead matter.
C14 is used in radiocarbon dating techniques or methods to estimate the age of fossils. This is a reliable technique used for dating organic samples that are less than 50,000 years old.
An easy way of representing the change in mass of the isotope through the years is to make a line graph, which is easy to interpret and compare the information.
In this example, our line graph must represent the number of half-lives related to the amount of parent isotope in grams.
The table details the years and the amount of isotope. So, by kowing the half-life of C-14, we can get how many half-lives there are.
5,700 years ---------- 1 half-life
11,400 years--------- X = 2 half-lives ⇒ (5700 x 2) or (11,400/5,700)
17,100 years -------- X = 3 half-lives ⇒ (5700 x 3) or (17,100/5,700)
22,800 years ------ X = 4 half-lives ⇒ (5700 x 4) or (22.800/5,700)
28,500 years ------ X = 5 half-lives ⇒ (5700 x 5) or (28,500/5,700)
34,200 years ------ X = 6 half-lives ⇒ (5700 x 6) or (32,200/5,700)
39,900 years ------ X = 7 half-lives ⇒ (5700 x 7) or (39,900/5,700)
45,600 years ------ X = 8 half-lives ⇒ (5700 x 8) or (45,600/5,700)
51,300 years ------- X = 9 half-lives ⇒ (5700 x 9) or (51,300/5,700)
Now, we can make a new table,
Number of half-lives Carbon-14 (g)
0 ..............................10,000
1 ...............................5,000
2................................2,500
3 ................................1,250
4 ................................ 625
5 ................................ 312
6 ................................ 156
7 ................................. 78
8 ................................. 39
9 ................................. 20
Finally, we can make the line graph using the data of this new table. You will find it in the attached files.
In conclusion, the best graph you can make is a line graph, and if they ask you to graph the number of half-lives and give you the number of years, you can just make the conversion using the half-life of the isotope.
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ILL GIVE BRAINLIEST!
1. In your journal, state the function performed by each numbered structure in the figure.
2. Now name a cell structure that performs each of these same functions.
3. Does "Cell City" represent a plant cell or an animal cell? Explain your answer.
This cell city represents plant cell due to the presence of chloroplast.
What represents each part of the city?In the cell city, the power plant represents mitochondria due to its production of energy. The storage tanks represent vacuoles because in cells in vacuoles materials are stored.
The transport company represents Golgi apparatus which also transport material within the cell, city hall represents nucleus because all the activities can be controlled from here.
The waste disposal plant represents Lysosomes because it removes waste. The construction site represents Ribosomes and Endoplasm Reticulum where proteins are produced. The food processing company represents Chloroplasts.
"Cell City" represent an plant cell because it has chloroplast which is only present in plant cell.
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Which two statements best describe the role of lymph in the human body?
alter repressor proteins thereby increasing the rate of transcription initiation. Multiple Choice Inducers Corepressors Effectors Modulators
Inducers alter repressor proteins thereby increasing the rate of transcription initiation.
What are inducers?A substance that is capable of activating the transcription of a gene by combining with and inactivating a genetic repressor.
What are repressors?Repressor protein directly binds to the operator sequence of the gene and inhibits gene expression
Corepressor protein binds to the repressor protein and indirectly regulates (inhibit) the gene expression.
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Explain how these tail lengths were inherited by describing the mode of inheritance, indicating how many gene pairs were at work, and designating the genotypes of Harvey, Irma, and their 18- cm -tail offspring. Drag the terms on the left to the appropriate blanks on the right to complete the sentences.
Here we can see that 7 phenotypes appeared in F2 generation, so the number of genes involved is 3 and alleles is 6. Contribution per allele = 4 cm Base contribution = 6 cm
Genotype of Harvey = aa bb cc Genotype of Erma = AA BB CC
Number of dominant alleles if length is
18 cm = 18-6 / 4 = 12 / 4 = 3.
F1 generation genotype = Aa Bb Cc This clarifies why the length is 18 cm, as there are three dominant alleles.
seven 1. It is likely that there are gene pairs in this cross. There are
categories of phenotypes. The genotypes of the parents would be combinations of alleles that would produce a 6 cm ( aabbcc ) tail and a 30 cm) tail, whereas the 18 cm offspring would have a genotype of AaBbcc.
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Chromatin can be altered in a number of ways, such as histone modification and DNA methylation. When are such alterations considered to be epigenetic
Epigenetic changes are those which do not involve alterations in the DNA sequence. These are caused due to interaction of the genome with the environment.
When are alterations epigenetic?Epigenetic modifications or tags include DNA methylation and histone modification.These changes alter DNA accessibility and chromatin structure thus regulating gene expression.These are the reversible, heritable changes which do not change your DNA sequence, but they can change how your body reads a DNA sequence.These are necessary for the normal development of organisms.Stable, long-term epigenetic modifications involve DNA methylation.Flexible, short-term changes involve histone modifications, such as methylation and acetylation.Learn more about epigenetic changes here:
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Botulism is caused by ingestion of a proteinaceous exotoxin; therefore, it can easily be prevented by
Botulism can easily be prevented by boiling food prior to consumption.
What is Botulism?Botulism may be defined as an imperative food poisoning that is provoked by botulinum toxin delivered in food by a bacterial species clostridium botulinum.
Clostridium botulinum inhibits the release of acetylcholine in the neuromuscular junction and causes defects in sensory perception through the central nervous system.
It can only be prevented by taking the proper boiled food prior to consumption.
The complete question is as follows:
boiling food prior to consumption. administering antibiotics to patients.not eating canned food.filtering food.preventing fecal contamination of food.Therefore, the correct option for this question is A, i.e. boiling food prior to consumption.
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how would the nervous system function be affected if both the presynaptic and postsynaptic neurons at every synapse had both synaptic vesicles and neurotransmitter receptors
Small, electron-lucent vesicles known as synaptic vesicles (SVs) are grouped at presynaptic terminals. They hold neurotransmitters and exocytosis, which is stimulated by calcium, releases them. After exocytosis, SVs are formed locally at the terminals.
From the presynaptic cell with synaptic vesicles to the postsynaptic cell with neurotransmitter receptors, a signal always moves in one direction across the chemical synapse. The correct routing of nerve signals throughout the body is guaranteed by this one-way communication.A signal is transmitted from one neuron—the presynaptic, or sending, neuron—to another neuron—the postsynaptic, or receiving, neuron—at the synapse, increasing or decreasing the likelihood that the postsynaptic neuron will fire its own action potential.The stimulation causes a sensory neuron to go into an action potential, which alters the motor neuron's potential. Excitatory because it tends to depolarize the cell, this potential is known as an excitatory postsynaptic potential (EPSP).learn more about synaptic vesicles here:https://brainly.com/question/5865840
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Damaged small blood vessels beneath the skin following blunt trauma causes: A: cyanosis. B: hematoma. C: mottling. D: ecchymosis
Answer:D:Ecchymosis
Explanation:
When small blood vessels beneath the skin are damaged, blood seeps into the soft tissues. This manifests as a bruise, also referred to as ecchymosis
Nerve impulses for the sense of hearing are initiated in the spiral organ (organ of Corti) and then travel through the _____ to the cochlear nuclei in the _____.
Answer:
cochlear branch of cranial nerve VIII; medulla oblongata
Explanation:
As Phase 1 of the action potential is initiated, the membrane is _____. This is caused by the ______ of ________ ions
As Phase 1 of the action potential is initiated, the membrane is repolarized. This is caused by the efflux of K+ ions.
Repolarization of Neurons
Repolarization is the process of return of the membrane potential to the negative value before depolarization. During depolarization, the membrane potential becomes a positive value which is returned to a negative value during repolarization.
During repolarization, the sodium channels close and the voltage-gated potassium channels open up. This reduces the permeability of the membrane to the sodium which causes the decline in the entry of sodium ions. During this time the voltage-gated potassium channels are opened up and the potassium ions come out. This restores the negative membrane potential of the cell membrane.
The return of a negative charge from a positive charge lasts only for a brief moment. The process lacks only a few milliseconds. Various channels involved in repolarization are A-type channels, Ca2+ activated K+ channels, delayed rectifiers, etc.
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Suppose that a plant disease kills all the fruit. The change could become a on the birds?
The clear fluid found in whole blood in which the cells are suspended is called ______; however, when the clotting factors are removed, it is now called ______.
The clear fluid found in whole blood in which the cells are suspended is called plasma however, when the clotting factors are removed, it is now called serum.
Plasma is the frequently forgotten part of blood. White blood cells, red blood cells, and platelets are essential to body characteristics. However, plasma also plays a key function. This fluid consists of the blood components during the frame.
The serum consists of all proteins not utilized in blood clotting; all electrolytes, antibodies, antigens, hormones; and any exogenous substances (e.g., capsules or microorganisms).
Serum does now not incorporate white blood cells (leukocytes), red blood cells (erythrocytes), platelets, or clotting elements.
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You are a research scientist studying bioluminescent bacteria (bacteria that can glow). You grow several plates of bacteria and give them a special chemical that you hypothesize will increase their luminescence, or brightness. You turn off the lights and use a device called a photometer to measure the light levels (in lumens) coming from each plate. You collect the following data:
Plate 1: 7 lumens, 6 lumens, 13 lumens
Plate 2: 4 lumens, 5 lumens, 7 lumens
Plate 3: 3 lumens, 6 lumens, 7 lumens
Plate 4: 5 lumens, 5 lumens, 8 lumens
Which of the following pieces of data is likely an outlier?
From the data, the plate that is probably an outlier is that of plate 1, where a value much above the average of the other plates occurred.
Plate 1: 7 lumens, 6 lumens, 13 lumensHow does the phenomenon of bioluminescent animals happen?Bioluminescence is the emission of cold, visible light by living organisms. It occurs in various organisms
bacteriafungialgae coelenterates molluscsarthropods fish, mainly in the marine environment. In the terrestrial environment it occurs in fungi, annelids, molluscs and mainly in insects.
With this information, we can conclude that from the data, the plate that is probably an outlier is that of plate 1, where a value much above the average of the other plates occurred.
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Do high percentages of sand particles contribute to high porosity or low porosity soil?
Answer:
No, high percentage of Sand particles don't contribute to high porosity. Water in sandy soil just passes through it because of larger pore diameter.
A high percentage of sand particles contributes to low porosity of soils.
What is porosity?Porosity is a characteristic that determines the level of pores in soils.
When it comes to porosity, the component of soil with the highest is clay, followed by silt, and then sand.
Sand particles are large and leave little pores as compared to the particles of silt and clay which are smaller.
Thus, the more sand particles in soils, the lower the porosity.
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What type of plant undergoes self-fertilization to produce some offspring that are identical to the parent and some that are different
Hybrid plants
What is self-fertilization between hybrid plants?Pollen from the same plant travels to the ovule or stigma of a flower (in flowering plants) in a process known as self-pollination (in gymnosperms). In autogamy, pollen is transferred from the anther of one flower to the stigma of another flower on the same flowering plant, or from the microsporangium to the ovule within a single (monoecious) gymnosperm. In geitonogamy, pollen is transferred from the anther of one flower to the stigma of another flower on the same flowering plant. Some plants contain defenses against autogamy, like cleistogamy, which prevents flowers from opening, or moving stamens that touch the stigma. When two distinct plant species are self-pollinated and the resulting seed is grown, a hybrid plant is created. A hybrid is the plant that emerges from those two types of seeds. Commercial self-pollination is done to pass on some sort of desirable trait from each original variety to the progeny. The term "selfing," which is frequently used as a synonym, refers to other forms of self-fertilization as well as self-pollination.
I understand that the question you are looking for is this:
What type of plant undergoes self-fertilization to produce some offspring that are identical to the parent and some that are different?
a) true-breeding
b) homozygous
c) hybrid
d) recessive
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A moderate amount of swelling that occurs immediately following injury and that is caused by synovial fluid and by blood in the joint is called:
A moderate amount of swelling that occurs immediately following injury and that is caused by synovial fluid and by blood in the joint is called a hemarthrosis.
What is hemarthrosis?Hemarthrosis, or bleeding into a joint, is a significant contributor to pain and edema in monoarticular joints.
What is synovial fluid?Between the joints is a viscous liquid called synovial fluid. An examination of the synovial fluid looks for conditions that impact the joints.
What synovial fluid do?When you move your joints, the fluid cushions the ends of the bones and lessens friction.
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When a population is small there is an abundance of resources for all individuals, so the per capita resource availability is high, thus leading to more rapid growth rates (as compared to larger populations). Why then are small populations more likely to go extinct compared to large populations
Answer:
Since there are fewer individuals there is less genetic variation meaning that one disease/disaster and wipe out the whole population
Explanation:
Lab: Mineral and Rock Classification
Rocks are objects mainly composed of minerals, which are categorized as igneous, metamorphic and sedimentary.
What is a rock?Rocks are objects composed of two or more different types of minerals, which reacted over a geological scale.
Igneous rocks are formed by minerals found in magma when it crystallizes, whereas sedimentary rocks are formed by geological processes such as erosion.
Finally, metamorphic rocks underwent high heat/pressure, or also mineral-based processes on the geological scale.
In conclusion, rocks are composed of minerals and categorized as igneous, metamorphic and sedimentary.
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Which is tied to a person’s beliefs in regard to persuasive speaking? a. a person’s likes and dislikes b. religion or lack of religion c. customs in other countries d. the manners learned from their family
A person’s beliefs in regard to persuasive speaking is tied to a person’s likes and dislikes; option A.
How does a person's belief affect his speaking?The belief a person has will affect the verbal and non-verbal cues of the individual. Also, the likes and dislikes of the individual will also affect his persuasive speaking abilities.
In conclusion, a person's likes and dislikes affects a person's persuasive speaking.
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Visit a site where a natural resource such as quarry farm or water treatment plant is produced or where waste is processed such as a landfill or wastewater treatment plant and describe the process that takes place as the site
Chemical coagulation, flocculation, sedimentation, filtration, and disinfection are the processes that take place at water treatment plant.
Describe the process that takes place at the site?There are various processes takes place at the water treatment plant site such as chemical coagulation, flocculation, sedimentation, filtration, and disinfection. There are chemicals added to the water as it enters the various treatment processes.
So we can conclude that chemical coagulation, flocculation, sedimentation, filtration, and disinfection are the processes that take place at water treatment plant.
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Mutations within an organism can occur in body cells or reproductive cells. Which type of mutation is seen in a spen
cell but not in a skin cell?
somatic mutation
• missense mutation
• nonsense mutation
• germline mutation
Answer:
answer is Germline mutation
The equation shows cellular respiration. During cellular respiration, glucose combines with oxygen to form carbon dioxide, water, and ATP.
C₆H₁₂0₆+6O₂. --> 6CO₂+6H₂O+ATP
What happens to the energy in the bonds in glucose?
1. The energy is transferred to oxygen
2. The energy is transferred to carbon dioxide.
3. The energy is transferred to water
4. The energy is transferred to ATP
This family of ATPases is structurally related to the pumps that acidify lysosomes and vesicles; however, they usually function in reverse, generating ATP from ADP and Pi using proton gradients across membranes. What are they called
This family of ATPases is structurally related to the pumps that acidify lysosomes and vesicles; however, they usually function in reverse, generating ATP from ADP and Pi using proton gradients across membranes is called F-type pumps.
The inner membrane of mitochondria and bacterial plasma membranes both contain F type pumps, which are necessary for the generation of ATP. It is also known as the ATP synthase complex or Complex V. By letting these protons passively return to the matrix, they use the proton gradient created by the flow of electrons to produce ATP.The F1 motor is the ATP turnover motor and,In mammals, the F0 motor, which is in charge of ion translocation, has nine subunits, nine of which are likely centered on the membrane's A, B, and C subunits, along with D, E, F2, F6, G2, and 8 subunits.
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Continental drift states that continents moved ____ to their current location
Wegener proposed the hypothesis of continental drift, which suggested that continents are in constant motion on the surface of Earth. Over time Pangaea began breaking apart, and the continents slowly moved to their present positions.
What is Continental Drift ?The theory of continental drift is most associated with the scientist Alfred Wegener.
Wegener's continental drift theory introduced the idea of moving continents to geoscience. He proposed that Earth (opens in new tab) must have once been a single supercontinent before breaking up to form several different continents.The four pieces of evidence for the continental drift include continents fitting together like a puzzle, scattering ancient fossils, rocks, mountain ranges, and the old climatic zones' locations.Learn more about Continental Drift here:
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Tongue rolling was thought to be an example of a human trait controlled by a single gene, but we now know that identical twins, who share 100% of their DNA sequences, will only share the tongue-rolling trait 70% of the time. This indicates that tongue rolling may also be controlled by the environment. True False
Answer:False probably
Explanation:
as no sign of environment controlling tongue rolling.
Tongue rolling is often saw in every 7/10 people.
An example of mitosis at work is a plant root
Answer:
elongating
Explanation:
^
how the life functions of a unicelluar oragnism are carried out