what is a geologic time column?​

Maturation of newly formed (non-calcified) bone matrix takes about 120 days.

The original osteoblasts that set the osteoid start to develop into osteocytes, which make up the bulk of mature bone tissue. The bone is strengthened and made harder as a result of the osteocytes' ongoing secretion of proteins and other molecules that contribute to the mineralization of the bone matrix.

As the bone matrix ages, it also goes through a remodeling process in which osteoclasts specialized cells, destroy old or damaged bone tissue and replace it with new bone tissue. This remodeling process which lasts the entirety of a person's life, is crucial for maintaining bone health and strength.

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Simplistically, a permutation is just the number of ways that we can arrange any number of objects in a set of things.

Here's an example:

Suppose I have three objects A, B and C, and I want to arrange them in all possible ways.

Well, we could have

A B C

A C B

B A C

B C A

C A B

C B A

Note that this is just 6 ways.

In mathematics, we often express the number of possible arrangements of N objects as N!.. the "!" is known as a "factorial."

➥ In the above example, we have 3! ways of arrangement = 3*2*1 = 6.

➥ Then, the number of ways to arrange 4 objects in a set is just 4! = 4*3*2*1 = .24.

➥ And the number of ways to arrange 5 objects in a set is just 5! = 5*4*3*2*1 = .120. Etc.

Answer:

half life and higher affinity

Explanation:

it is because they have long half life in blood and high affinity

Steroid hormone

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Answer:

to study earth's past climate

Answer:

Explanation:

Air bubbles and dust get trapped in ice as it forms. And the ice in some places, like Antarctica, has stayed frozen for over a million years. Scientists drill holes in the ice and remove ice cores. Each year's worth of ice forms a layer within the core.

The material trapped in ice layers gives information about the climate at that time. Scientists study the layers to learn about past temperatures and precipitation. They can learn how the amount of carbon dioxide in the atmosphere has changed over time. The layers also reveal when events such as volcanic eruptions have taken place.

This form of intercellular signaling is known as juxtacrine signaling. Juxtacrine signaling is a type of cell-to-cell communication where signaling molecules are directly transferred between neighboring cells through direct contact between the cells.

In this case, the transmembrane protein expressed by the cell is cleaved at the plasma membrane, and the resulting extracellular fragment binds to receptor proteins on nearby cells.

This direct contact between the cells allows for the transfer of signaling molecules, which then activate signaling pathways within the nearby cells, resulting in altered gene expression patterns. Juxtacrine signaling plays an important role in many biological processes, including tissue development and immune responses.

It is also a crucial component of cell signaling in cancer cells, where juxtacrine signaling between cancer cells and their surrounding microenvironment can promote tumor growth and metastasis.

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Answer:

The Pull of the Planets is a 30-minute activity in which teams of children model the gravitational fields of planets on a flexible surface. Children place and move balls of different sizes and densities on a plastic sheet to develop a mental picture of how the mass of an object influences how much effect it has on the surrounding space.

This activity should be conducted after Heavyweight Champion: Jupiter!, which allows the children to discover the force of gravity in the solar system. These concepts involve more advanced science than previous activities in Jupiter's Family Secrets, and they explore more deeply the science of the Juno mission and the rich information it will return to us. Facilitators who choose to undertake this activity should have a firm grasp of the scientific basis so that misconceptions are not introduced to the children.

Explanation:

If the human genome has 3.2 billion base pairs of DNA, about  5,120,000 times will the following restriction sites be present .

To find that the how many times will the following restriction sites be present then we must first calculate the frequency of the each type if base.It is given that the AT base pairs consist 60% of the DNA, then we deduce that the frequency of A is 0.3 and frequency of T is 0.3. The GC base pairs must consist of 40% of the DNA; therefore, the frequency of G is 0.2 and the frequency of C is 0.2.

a. BamH1 GGATCC is then (0.2)(0.2)(0.3)(0.3)(0.2)(0.2) = 0.000144

3,200,000,000(0.000144) = 460,800 times

b. EcoRI GAATTC = (0.2)(0.3)(0.3)(0.3)(0.3)(0.2) = 0.000324 3,200,000,000(0.000324) = 1,036,800 times

c. HaeIII GGCC = (0.2)(0.2)(0.2)(0.2) = 0.0016 3,200,000,000(0.0016) = 5,120,000 times.

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In regards to the student question, the function of TERC, the RNA component of telomerase, is that it serves as a template for DNA synthesis. Therefore, the correct option is b. a template.

Telomerase is an enzyme that helps maintain the length of telomeres, which are the protective caps at the ends of chromosomes. Telomerase consists of two main components: the protein component, which is responsible for the enzymatic activity of telomerase, and the RNA component (TERC), which serves as a template for DNA synthesis.

In order for telomerase to maintain the length of telomeres, it needs to add new DNA sequences to the ends of chromosomes. TERC, which is a non-coding RNA, serves as the template for the addition of these new DNA sequences. During DNA synthesis, TERC pairs with the single-stranded overhang of the telomere, and the protein component of telomerase adds new DNA nucleotides to the end of the chromosome, using TERC as a template. This process helps ensure that the telomeres do not become too short, which can lead to cellular senescence or cell death.

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The intrinsic rate of increase for the population of Asian longhorn beetles is 5.5. This means that the population is growing at a rate of 5.5% per year, assuming that there are no limiting factors such as resource availability or predation.

It is important to monitor and control the population growth of invasive species like the Asian longhorn beetle to prevent ecological damage and economic losses.

To find the intrinsic rate of increase for the population of Asian longhorn beetles, we can use the formula :- r = b - d.

where:

- r is the intrinsic rate of increase

- b is the birth rate

- d is the death rate

Substituting the given values, we get:

r = 6 - 0.5

r = 5.5

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Answer: i think it is b

Explanation:

i dont know for sure, so i hope you like it

Answer:

Explanation:

We use the same logistic equations for the prey and predator as like in previous, and the Carrying capacity typically acts as an upper limit upon an exponential growth function.

Answer:

It is cell proliferation that does not occur by mitosis, the mechanism usually identified as essential for cell division in eukaryotes.

Explanation:

Answer:

Letter A.

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Split-brain patients have undergone a surgery that severs the corpus callosum, the band of fibers that connects the two hemispheres of the brain. This means that information received through the right senses (ear, eye, or side of the body) is processed by the left hemisphere and vice versa. The correct answer is c)Speak about info received exclusively in their left hemisphere.

Split-brain patients are unable to speak about information received exclusively through their left hemisphere because that information cannot be transferred to the language centers in the left hemisphere for verbal expression. However, they can perform tasks that involve integrating logical and spatial information because both hemispheres are still able to process information independently. They may also have difficulty coordinating movements between major and minor muscle groups, but this is not a specific symptom of split-brain syndrome.

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A hypothesis is a theory put forth to account for an observation or phenomenon. It is tested to confirm it. The hypothesis is deemed validated and true if the data shows that it is true.

What does a scientific hypothesis mean?

A hypotheses is a proposition that can be verified by empirical study. Before you begin your research or data collection, you must create your hypotheses if you wish to investigate a relationship among two or more variables. A daily apple diet reduces the number of doctor appointments.

A logical hypothesis is what?

Without supporting data, a logical hypothesis hypothesises a relationship between the variables. Instead of being supported by data, claims are instead founded on reasoning or deduction. The atmosphere of Earth would be difficult for an alien born on Venus. Carnivorous dinosaurs were those with pointed, sharp teeth.

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Answer:A, C, G, and T are the "letters" of the DNA code; they stand for the chemicals adenine (A), cytosine (C), guanine (G), and thymine (T), respectively, that make up the nucleotide bases of DNA.

Explanation:

Major role of the nasal cavity is to humidify and warm the inspired air.

Nasal passages filter and warm the air, and make it moist before it goes into the lungs. They are also responsible for sensing the smell . Hairlike structures known as cilia line up the mucous membrane and traps  the mucus out of the nose.

Nasal cavity is located above the oral cavity, inside to the nasopharynx . It has three regions mainly  nasal vestibule , respiratory passage and the olfactory region.

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Answer:

The one you chose would be the correct answer! I read through it all and it seems like the best answer yet!

The relative concentrations of ATP and ADP control the cellular rates of metabolic processes.

Cellular respiration is the process that produces ATP in living organisms. It is the biochemical pathway that releases energy stored in food molecules and uses it to produce ATP from ADP and inorganic phosphate. The energy released in cellular respiration is used to power the activities of the cell.

The relative concentrations of ATP and ADP control the cellular rates of metabolic processes. ATP inhibits the rate of ATP-forming processes while it stimulates the rate of ATP-consuming processes. ADP, on the other hand, stimulates the rate of ATP-forming processes while it inhibits the rate of ATP-consuming processes. Therefore, a cell with higher ATP concentration will tend to consume ATP and produce ADP while a cell with higher ADP concentration will produce ATP.

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Answer:

Gravity

Explanation:

Gravity keeps things together. Think of it in 2 ways:

1.Without gravity, an Earth-orbiting satellite would go off into space along a straight line. With gravity, it is pulled back toward Earth.

2.Gravity keeps the earth round, pushing it on all sides, which is what gives it its round shape.

Hope it helps!!   =D

Explanation:

I'm guessing gravity is what keeps them floating or orbit?

B.  transport oxygen to tissues

The role of the central nervous system in this model is as coordinator (Option a).

The central nervous system is a fundamental body system that acts by sending and receiving signals from the environment.

The central nervous system can act as a coordinator by modulating signals and thus maintaining the internal equilibrium (homeostasis).

In conclusion, the role of the central nervous system in this model is as coordinator (Option a).

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Answer:

eukaryotic

Explanation:

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The human skull is Eukaryotic .

Answer:

Explanation:

All life can be classified into three domains: Bacteria, Archaea, and Eukarya

Organisms in the domain Eukarya keep their genetic material in a nucleus and include the plants, animals, fungi, and protists.

A drug's efficacy refers to its tendency to activate the receptor, while a drug's affinity is how likely it is to bind with the receptor.

When considering the interaction between a drug and its target receptor, two important concepts are efficacy and affinity. Efficacy refers to the drug's ability to produce a biological response upon binding to the receptor. It reflects the drug's capacity to activate the receptor and initiate the desired cellular or physiological drug's affinity effects. A drug with high efficacy will have a strong ability to activate the receptor and elicit a significant response.

On the other hand, affinity relates to the drug's binding strength or attraction to the receptor. It represents the likelihood of the drug binding to the receptor when they come into contact. Drugs with high affinity have a strong binding affinity for the receptor, meaning they are more likely to bind to the receptor and form a stable drug-receptor complex.

Both efficacy and affinity play essential roles in determining a drug's effectiveness. Antagonists drug with high affinity but low efficacy may bind strongly to the receptor but fail to activate it sufficiently to produce a therapeutic effect. Conversely, a drug with high efficacy but low affinity may have a strong activating effect on the receptor but may not bind strongly or specifically to the receptor.

Efficacy refers to a drug's ability to activate the receptor and produce a response, while affinity relates to the drug's likelihood of binding to the receptor. Both factors are crucial in understanding the pharmacological properties and effects of a drug.

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Answer:

Large bodies of water, such as oceans, seas and large lakes, can affect the climate of an area. Water heats and cools more slowly than landmasses. Therefore, the coastal regions will stay cooler in summer and warmer in winter, thus creating a more moderate climate with a narrower temperature range.

Explanation:

Answer:

Large bodies of water, such as oceans, seas and large lakes, can affect the climate of an area. Water heats and cools more slowly than land masses. Therefore, the coastal regions will stay cooler in summer and warmer in winter.

Explanation:

I was supposed to answer but i wrote it as a comment instead'-'

Yes, some flowering plants can be a color other than green. While most plants have green leaves due to the presence of chlorophyll, there are flowering plants that exhibit different colors such as red, yellow, purple, or blue.

These colors are the result of pigments called anthocyanins and carotenoids present in the plant cells. Anthocyanins produce red, purple, or blue colors, while carotenoids contribute to yellow and orange hues.

Despite having pigments that give them vibrant colors, these flowering plants still contain chlorophyll.

However, the pigments may mask the green color of chlorophyll, resulting in leaves or petals that appear differently colored.

The presence of chlorophyll is crucial for photosynthesis, allowing the plant to convert sunlight into energy even in non-green parts.

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Explanation:

Hey there!!

The si unit of time is second.

The international convention of scientists that was held in France had come to the conclusion that the si unit of time is second.

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Answer:

Until attachment to the uterus, the developing organism is on its own. That means it needs to supply its own energy, so the cytoplasm of the human egg cell contains many energy-generating factories called mitochondria. Those mitochondria come only from the mother.

a. The ovum contains a large quantity of cytoplasm, which contains nutrients for the first days of development after fertilization. The cytoplasm of the ovum contains over 140 000 mitochondria to produce ATP required for growth.

Explanation: