Answer number 12please

In the process of mitosis, the cohesion of sister chromatids at the centromere breaks down at the conclusion of metaphase, while during meiosis, the chromatids continue to be united at the centromere throughout the first anaphase of the process

In the process of mitosis, the cohesion of sister chromatids at the centromere breaks down at the conclusion of metaphase. This gives the daughter chromosomes the ability to separate and travel toward the two poles of the spindle. In contrast, during meiosis, the chromatids continue to be united at the centromere throughout the first anaphase of the process.

During the first stage of meiosis, a protease known as separase cleaves cohesin, which is found on the chromosome arms. This opens the door for the separation of homologous chromosomes.

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Answer: b

Explanation: I took the test

Answer:

B. What the climate was like in the area long ago.

Explanation:

All flowering plants produce pollen grains with distinctive shapes that change as climatic factors change as plants are generally distributed based on patterns of temperature and precipitation. So, fossil pollen records can tell us about the past climate.

Answer:

A bird is a bird, except when it's a nestling, hatchling, or fledgling. As baby birds grow, the specific names that refer to the change.

Eukaryotic cells can move in various ways using different cytoskeletal filaments that are amoeboid movement, using cilia and flagella

The three main cytoskeletal filaments are actin filaments, microtubules, and intermediate filaments. Actin filaments are involved in cell movement through a process known as amoeboid movement. This involves the extension of pseudopodia which are filled with actin filaments that push the cell forward. Microtubules are involved in the formation of cilia and flagella, which are used for locomotion.

The movement of cilia and flagella is achieved by the sliding of microtubules against each other, powered by ATP. Intermediate filaments, on the other hand, provide mechanical stability to the cell and are involved in cell adhesion and migration. They do not directly participate in cell movement, but instead provide a strong framework for the cell to move upon. Therefore, eukaryotic cells can move using different cytoskeletal filaments depending on the type of movement required, with actin filaments and microtubules being the main players in cell locomotion.

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Answer:

lipids

Explanation:

lipids also can contain sulphur (C, H, O, N, S, P)

Answer:

Nuclues.

Explanation:

The nucleus holds the genetic information.

Answer:

The blank is:

C1 through T1 and L1 through S4

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Note that the irregular compariative adjectives in the excrp it "practical". While the comparative form of ptractical is "More Practical". Note that the author used the irregular form.

The author's strategy, in my opinion, is short-sighted and incorrect. While removing rainforest trees may give short-term economic gains, the long-term ramifications for both the environment and the economy are severe.

" Better" and "worse" are two irregular comparative adjectives that might be used to suggest a more  sustainable approach.

A strategy that promotes sustainable forestry methods and conservation efforts.

for example, would be better for both the environment and the economy in the long run, but a plan that prioritizes short-term economic benefits at the expense of the environment would be worse.

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Answer:

so u can uderstand whats going on

Explanation:

The second meiotic division is essentially a mitotic division, but meiosis produces haploid cells instead of diploid ones.

With the exception of the halving of the number of chromosomes, meiosis II resembles mitosis. Four haploid cells with one copy of each chromosome are the end result of meiosis II. Males and females of animals produce different numbers of viable gametes during meiosis. The sister chromatids split during meiosis II, creating haploid cells with non-duplicate chromosomes. Mitosis gives rise to four identical daughter cells. Meiosis, on the other hand, creates four distinct daughter cells, each of which has half as many chromosomes as the parent cell.

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if grass is an answer choice do that but if acorn is an answer choice choose that.

Explanation:

Food webs show who eats whom in an ecosystem. A tree obtains sunshine, produces an acorn, a squirrel eats it, a hawk eats the squirrel, etc. Therefore, option (D) is correct.

An ecological community's food web is a graphical representation of the natural connectivity of food chains as well as the question of what consumes what in that community. The term "consumer-resource system" is another name for the "food web."

Typically depicted as a map or chart, a food chain shows which organisms in an ecosystem are consumed by others. An illustration of this would be a scenario in which sunlight causes a tree to produce an acorn, which is then consumed by a squirrel, which is in turn consumed by a hawk, and so on and so forth.

Therefore, option (D) acorn is a producer in this food web.

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Answer:

Methane

Explanation:

When the oxygen available below ground is used up by fungi and bacteria, their decomposing activity stops. Easily decomposed organic substances will continue to be broken down by anaerobic bacteria, which can live where no oxygen exists. Methane gas is one of the products of their decomposing activity.

Bacteria and the carbon cycle have an important link, to understand this link we need to know that.....

The carbon cycle is constituted by the absorption of carbon dioxide by plants in the process of photosynthesis. Half of this absorbed carbon is released into the atmosphere and the other half the plant uses to produce sugars (glucose). When ingesting plants, animals ingest carbon together for their organism, being released through respiration or its decomposition.

Fungi and bacteria are responsible for the decomposition of both

They ingest part of this carbon, releasing it to the atmosphere and the soil.

With this information, we can say that bacteria add carbon to the carbon cycle by decomposing dead organisms.

Decomposers, such as bacteria, are extremely important, because without them the carbon cycle would not be complete.

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When depolarization of a cell membrane reaches the threshold, an action potential is produced. Here's a step-by-step explanation:

1. Depolarization occurs when positive ions, such as sodium (Na+), enter the cell, causing a change in the cell membrane's electrical potential.
2. As the cell membrane depolarizes, it moves towards a less negative or even positive electrical potential.
3. The threshold is a specific level of depolarization needed to trigger an action potential.
4. When depolarization reaches the threshold, voltage-gated ion channels open, allowing more ions to flow across the cell membrane.
5. This rapid exchange of ions causes a spike in the electrical potential, producing an action potential.
6. The action potential propagates along the cell membrane, ultimately leading to the transmission of signals in neurons or the contraction of muscle cells.

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The process of oocyte maturation in Ascaris can be divided into several stages. The first stage is oogenesis, which occurs in the germarium of the ovary.

1. The second stage is vitellogenesis, during which the oocyte accumulates yolk granules & other nutrients.

2. The third stage is ovulation, during which the mature oocyte is released from the ovary & enters the oviduct.

3. This process is triggered by a surge in hormones. The final stage is fertilization, during which a sperm cell penetrates the jelly layer and fuses with the oocyte.

4. In summary, oocyte maturation in Ascaris involves oogenesis, vitellogenesis, ovulation, and fertilization.

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Sex outside of marriage is the kind of sex which is prohibited in the Bible and it is also considered as a sin.

Within Christian circles, it's assumed God only wants us to have sex if we are wedded. Sex outside of marriage is one of the clearest, irrefutable proscriptions in Christianity. If someone have sex outside of their marriage with someone else than it is considered as a great sin.

The Bible's origin is both mortal and godly — not just from God and not just from humans.That single author of Bible was believed to be Moses, the Hebrew prophet who led the Israelites out of prison in Egypt and guided them across the Red Sea toward the Promised Land.

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Answer:

Your cell use passive transport whereas your colleague cell use active transport.

Explanation:

There is a great difference in the type of transport between your experiment and his because you provide no ATP to the cell for transport means you use passive transport in which the cell moves molecules without the use of energy while on the other hand, your colleague provides ATP to the cell means the cell transports molecules with the use of energy so the cell use active transport. The characteristics of molecules have the presence of both type of cells which do both type of transport.

Answer:

Carrying capacity is the maximum number of individuals an area can support without degrading the environment.

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A very dry season would interrupt in the migration of Christmas island crab.

Hence, the dry season will interrupt in the spawning as it will delay the migration of Christmas island crab.

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The depth of the sediment of the lake in 2010 is (Round to one decimal place as needed.) 81.9 cm. This is because t represents the number of years before 1990. Therefore, 1990-20 = 1970. This implies that D(20) is the depth of the sediment in 1970.

This means that the depth of sediment would eventually be 155 cm if the sedimentation process continued indefinitely. Water is one of the most valuable resources on Earth. The ever-growing population and its consequent urbanisation,  industrialisation, and agricultural practices, however, have contributed to an increase in water pollution. To establish strategies to manage water quality in polluted lakes, biologists must establish the depths of sediments D(t) and the sedimentation rate.

To compute D(20), the equation D(t) =155 (1 - e^-0.01321) was used. D(20) was computed to be 81.9. This means that the depth of the sediment of the lake in 1970 was 81.9 cm.For the second question, limt→[infinity] D(t) was computed. As t approaches infinity, D(t) approaches 155. This implies that if the sedimentation process continued indefinitely, the depth of sediment would eventually be 155 cm. Therefore, biologists must continuously monitor and devise efficient methods to mitigate water pollution. This will help in conserving water, preserving aquatic life, and maintaining the balance of ecosystems. 

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A hormone called glucagon is important in regulating blood sugar (glucose) levels. It is synthesized by alpha cells and then released into the bloodstream from the pancreatic islets of Langerhans.

When blood glucose levels are too low, the pancreas releases more glucagon into the body (low blood glucose). In numerous ways, this hormone aids in the recovery of blood glucose: As a result, the liver releases glucose into the bloodstream after converting stored glucose into a usable form. Alpha cells in the islets of Langerhans secrete glucagon, and beta cells secrete insulin. The hormones insulin and glucagon control the body's glucose level to maintain it within a healthy range.

We can therefore conclude that glucagon, a hormone, is crucial for controlling blood sugar (glucose) levels. The pancreatic islets of Langerhans' alpha cells are responsible for their production.

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Answer:  The statement that is true about oxygen in plants is "Plants both produce and use oxygen for photosynthesis and cellular respiration, respectively."

Plants produce oxygen as a byproduct during photosynthesis, which is released into the atmosphere. However, plants also need to use oxygen for their own cellular respiration, just like animals do. During cellular respiration, plants use oxygen to break down glucose and produce ATP, which is used for energy. So, while plants do produce oxygen, they also need to use it themselves for their own metabolic processes. Additionally, plants require carbon dioxide and oxygen for photosynthesis.

Explanation: i would apreciate thanks and brainliest :D

Explanation:

thanks for the points man :) yes sir

Answer:

Eukaryotic cells contain many membrane-enclosed, large, complex organelles in the cytoplasm whereas prokaryotic cells do not contain these membrane-bound organelles. ... Only eukaryotes possess a membrane-bound nucleus and membrane-bound organelles such as the mitochondria, golgi apparatus, lysosomes, peroxisomes and ER.

Answer:

It's either D or B, I'm not really sure

Explanation:

In 1972, EPA issued a cancellation order for DDT based on its adverse environmental effects, such as those to wildlife, as well as its potential human health risks. Since then, studies have continued, and a relationship between DDT exposure and reproductive effects in humans is suspected, based on studies in animals.

Human health effects from DDT at low environmental doses are unknown. Following exposure to high doses, human symptoms can include vomiting, tremors or shakiness, and seizures. Laboratory animal studies showed effects on the liver and reproduction. DDT is considered a possible human carcinogen.

Hormones called neurotransmitters are produced and released by neurons in the brain, rather than by the endocrine glands, and delivered to organs and tissues through the bloodstream.

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The nitrogen cycle is similar to the carbon cycle in that plants utilise both of them, either as c02 or n2, to produce oxygen.

After entering the soil and then organisms, nitrogen undergoes a biochemical process called denitrification where it is transformed into a number of different forms before being released back into the atmosphere. Nitrogen fixation, nitrification, denitrification, degradation, and putrefaction are only a few of the chemical processes involved.

The nitrogen cycle is significant because urea is needed to sustain life on Earth. Nucleic acids and amino acids are the building blocks of genetic material.

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