The Milky Way is held together by a black hole's gravitational force. Since the stars near this black hole move at a high speed, what can you infer about the black hole? A. Its location B. Its depth C. Its speed D. Its size

Answer:

Mitosis inhibitor prevents tumor cells to enter mitosis by disrupting microtubules polymerization and stop it dividing.

Explanation:

Cancer cells are cells that undergo the mitotic division and bypass the G phase and divide rapidly. Mitotic cell division occurs in somatic cells that result in two identical daughter cells.

During mitotic cell division, there are different checkpoints that control different aspects and prevent a cell to divide rapidly.

Mitotic inhibitors are chemicals or agents that inhibit proteins that prevent a tumor cell to undergo in the mitotic division. Such agents inhibit a protein that forms microtubules polymerization.

Answer:

Mitosis

Explanation:

Answer: 5′ → 3′ direction

Explanation:

At a replication fork, both strands are synthesized in a 5′ → 3′ direction. The leading strand is synthesized continuously, whereas the lagging strand is synthesized in short pieces termed Okazaki fragments.

Answer:

Option B

Explanation:

tRNA are single stranded just like most of the RNAs. Hence option A is incorrect. Due to the presence of specific L shaped structure, tRNAs bind specifically to only certain amino acids. Hence, option B is correct

There can be nearly 20 types of tRNAs based on the type of amino acids also their grouping can be done based on anticodon. Hence, on basis of amino acid, there can be 20 types of tRNAs. Hence, option C is correct

tRNAs carry anticodons that are made up of three nucleotides. Hence option D is also incorrect.  

Option B is correct

The correct answer is that each tRNA binds a particular amino acid.

The correct answer is b) Each tRNA binds a particular amino acid. transfer RNAs (tRNAs) are single-stranded molecules that play a crucial role in protein synthesis. Each tRNA molecule binds to a specific amino acid and carries it to the ribosome, where it is added to the growing protein chain. tRNAs have a specific three-nucleotide sequence called an anticodon, which recognizes and pairs with a complementary codon on the mRNA during translation.

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Answer:

Large pinecones produce pollen to fertilize seeds in a way

Explanation:

Answer: The different forms of genes from our parents are called alleles.

☆ The function of the muscular system to respond to information from the brain, and contract accordingly.

✧ The nervous system is responsible for sending signals to the body to control it. Your nervous system can send electrical pulses to your muscles, which they respond accordingly, moving in what ever way your nervous system told it to. Your nervous system is controlled by your brain, and this is why you can control these movements. Say for example, when you move, your fingers, you are actually just sending electrical signals to your hands which cause your muscles to contract, making your finger move in a certain direction. The muscles are connected to your bones, which are connected to joints, allowing the bones to move in different directs when your muscles contract.

Final answer:

The muscular system includes all the body's muscles and is crucial for movement, bodily support, protection of internal organs, and heat generation. It allows for both voluntary and involuntary actions, from running to the heartbeat.

Explanation:

The Function and Importance of the Muscular System

The muscular system is essential for human life, encompassing all the muscles in our body. The primary function of this system is to facilitate movement, which includes not just voluntary actions like walking or jumping, but also involuntary ones such as the pumping of the heart or the movements involved in digestion. The muscles within this system work by contracting and relaxing, which in turn pulls on the bones of the skeletal system to produce motion.

This collaboration between muscles and bones supports the body's structure, protects internal organs, and allows for a diverse range of movements. For example, it enables standing, walking, running, grasping objects, and even facial expressions. Additionally, the muscular system has a role in maintaining posture and generating heat during muscle activity, which is vital for regulating body temperature.

An interesting aspect of the muscular system is its use in voluntary actions, such as those performed when practicing yoga. This illustrates how we can control our muscles to execute precise and controlled movements, highlighting the versatility and control we can achieve with our muscular system.

Explanation:

because carbohydrate has a lot of glucose in it which produces a lot of energy

Carbohydrates and fats are considered high-energy foods because they contain a large number of carbon-hydrogen bonds that can be broken during metabolism, releasing a significant amount of energy.

Carbohydrates and fats are two of the primary macronutrients in the human diet and are essential sources of energy for the body. The high-energy content of these compounds is primarily attributed to the chemical structure of carbon-hydrogen (C-H) bonds within their molecules.

In both carbohydrates (such as glucose and starch) and fats (triglycerides), the carbon atoms are bonded to hydrogen atoms in a highly reduced state. During metabolic processes like cellular respiration, the carbon-hydrogen bonds are broken through oxidation, releasing a large amount of energy that the body can use to fuel various biological functions. This energy is captured in the form of adenosine triphosphate (ATP), which is the cell's primary energy currency.

Compared to other macronutrients like proteins, which also provide energy but contain nitrogen and require additional steps for conversion, carbohydrates and fats are more efficient energy sources due to the abundance of C-H bonds. This efficiency makes them high-energy foods, and the energy they provide is essential for sustaining the body's metabolic processes and physical activities.

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Answer:

A. Trapping energy from the sun in the earth's atmosphere

Explanation:

The gases in the atmosphere have detrimental role in the global climate. The greenhouse gases, such as the carbon dioxide and methane have the ability to trap heat into the atmosphere. the heat that is trapped is the one that is bounced back from the earth's surface and back into the space, but these gases manage to retain big portion of it. As more and more heat is trapped, the atmosphere gradually becomes warmer, resulting in global climate changes, and overall a warmer earth, thus having the effect of the greenhouse on the planet.

Trapping energy from the sun in the earth's atmosphere is the major cause of increasing in the overall greenhouse effect, hence option A is correct.

Similar to a greenhouse's glass roof, gases in the atmosphere like carbon dioxide trap heat. These gases that absorb heat are referred to as greenhouse gases. Sunlight penetrates the atmosphere during the day. Sunlight causes the Earth's surface to warm up.

As we produce more carbon dioxide, the atmosphere heats, which leads to the production of more water vapor, which traps heat and raises the temperature of the atmosphere.

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Explanation:

The hydroxyl functional group can always be found in a carbohydrate molecule.

Answer is hydroxyl - b

Hello There!

YOUR ANSWER IS "B"

The hydroxyl functional group can always be found in a carbohydrate molecule.

Answer:Neutrons

Explanation:

look at the picture

"The trachea needs to be rigid to maintain an open airway for breathing, while the esophagus does not need to be rigid because its function is to transport food to the stomach.

The trachea, also known as the windpipe, is part of the respiratory system and serves as a conduit for air to travel from the pharynx to the bronchi and into the lungs.

To ensure that this passageway remains open for the continuous exchange of oxygen and carbon dioxide, the trachea is reinforced with C-shaped cartilage rings. These rings provide structural support and prevent the trachea from collapsing during inhalation and exhalation.

In contrast, the esophagus is a muscular tube that connects the pharynx to the stomach. It transports food and liquids to the stomach through peristaltic contractions, which are waves of muscular contractions that move down the esophagus. The esophagus does not require rigidity because it does not need to remain open all the time; instead, it is a collapsible tube that expands as food passes through it. The flexibility of the esophagus also allows it to navigate the curvature of the spine and the movement of the diaphragm during breathing.

In summary, the rigidity of the trachea is crucial for maintaining a patent airway, whereas the flexibility of the esophagus is essential for its role in swallowing and accommodating the passage of food of various sizes and consistencies."

Option D. Anaerobic

A runner is running the 60-meter dash, A runner is running the 60-meter dash, Anaerobic type of energy is the runner's body using to power through the race.

Aerobic means 'with air' and refers to the body producing energy with the use of oxygen. This typically involves any exercise that lasts longer than two minutes in duration. Continuous 'steady state' exercise is performed aerobically. Anaerobic means 'without air' and refers to the body producing energy without oxygen.

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Answer:

A. The cells would not be able to break down waste, but would be able to replicate DNA.

Explanation:

I got this question right on plato.

Answer:

C

Explanation:

Simple carbohydrates contain just one or two sugars, such as fructose (found in fruits) and galactose (found in milk products). These single sugars are called monosaccharides.

Wild orchids and mycorrhizae demonstrate mutualism, with the fungi providing nutrients for seed germination and growth, while the orchids give sugars upon photosynthesis.

The interaction between wild orchids and native mycorrhizae in the soil is a form of mutualism. Orchids produce tiny seeds that lack sufficient nutrients to support their germination and initial growth and therefore depend on a symbiotic relationship with mycorrhizal fungi, usually Basidiomycetes, for essential nutrients and carbohydrates. The fungus receives sugars from the orchid once it can photosynthesize, creating a mutually beneficial relationship. This mutualistic interaction is crucial throughout an orchid's lifecycle.

Answer:

Evolution is the change in the characteristics of a species over several generations.

Natural selection the process whereby organisms better adapted to their environment tend to survive and produce more offspring.

Explanation:

The correct answer is D. Evolution is the idea that species change over time, and natural selection is a mechanism by which evolution takes place.

Explanation:

In biology, the word "evolution" refers to  the changes in terms of genes (Genotype) and observable traits (phenotype) species undergo over time or through successive generations that led to changes within species but also to the emergence of new species as the result of mutations, genes changing or event genes being combines. On the other hand, the natural selection is one of the main mechanism that explain evolution, because natural selection refers to the prevalence of certain features that support survival and reproduction and that because of these are inherited which means those traits remain while other traits that are not favorable disappear over time which implies changes in species or evolution.  Therefore, the statement that shows the difference between evolution and natural selection is "Evolution is the idea that species change over time, and natural selection is a mechanism by which evolution takes place".

Answer:a inner ear

Explanation: because the ear drum

A.

The moon is responsible for many of the tidal forces on Earth.

Answer:

A. Sun

Explanation:

From the figure;

The top part of the mountain is at an elevation of 264 units.

and from the hint the hikers are all at the same elevation; which again from the figure is given as 180 units.

So the difference in elevation for the hikers is: 264-180=84 units.

Hence; the answer is Option: A 84

Hope it helps...

Regards;

Leukonov/Olegion.

Answer:

Because of adaptation (genetic variation).

Explanation:

Some organisms might undergo sexual reproduction at times when conditions aren't favorable, because the offspring will start adapting, so that what was once a "less favorable" condition, is now more favorable.

The goal of all that, is basically to create a genetic variation that consists in making the individuals better adapted to the environment: to make the environment more favorable.

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→ Keep in mind that, the environment doesn't change at all, what changes is how the organisms react to it.

For example, imagine that your punch is the environment, and that wood was the previous set of organisms, and that iron is the second set of organisms. If you punch both of them (given that your punch doesn't change), you'll note that there is a difference between punching wood and iron. The punch wont change, but how the material (which in this case represents our organisms) reacts to the punch, does change.

Hope it helped,

BiologiaMagister

This form of reproduction leads to more genetic variability and higher chances of survival.

When conditions in the environment become less favorable, the form of reproduction becomes preferable because it increases the chances of the offspring surviving.

Offspring of such reproduction are genetically more diverse than their parents, unlike those from other  reproduction which are of the same genetic composition as their parents.

With more variability, the offspring have a higher chance of surviving the unfavorable environment than their parents.

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The by-products of cellular respiration are ATP, carbon dioxide, and water. Thus, the correct option is B.

Cellular respiration may be defined as a type of chemical process that involves the breakdown of food in the cell with the release of energy in the form of ATP. It is also known as aerobic metabolism, aerobic respiration, and oxidative metabolism.

This metabolic reaction takes place inside the cell of each living organism in order to derive energy from foodstuff and release waste products.

During the process of cellular respiration, glucose and oxygen reacts with each other and finally result in the liberation of ATP, carbon dioxide, and water. In which carbon dioxide is released as a waste product.

Therefore, ATP, carbon dioxide, and water are the by-products of cellular respiration. Thus, the correct option for this question is B.

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Answer:

heat, carbon dioxide, and water  

Explanation:

ATP is not considered a by-product.

Family programs aim to reduce negative outcomes, community-based programs address various issues effectively, and prenatal and early childhood visitation programs benefit low-income children.

Family programs aim to reduce various negative outcomes such as divorce, high blood pressure, smoking, and obesity.

For example, community-based programs have been successful in addressing issues like alcohol, tobacco, and drug abuse as well as violence, even though the changes brought about by these programs are typically modest.

In addition, prenatal and early childhood visitation programs have proven effective in improving the health and well-being of low-income children, saving money in the long run and helping families in need.

Answer:

isogamous fertilization

Answer:

I suppose it would BE B

Explanation:

Answer:The answer is B or pollen.

Pollen is considered to be the male reproductive cell. Sorry if it's wrong.

Answer:  Ammonia, methane, carbon dioxide and radiation.

Explanation: All the living material consists of organic molecules that mainly consists of the element carbon.

The organic molecules evolve over 4 billion years ago by the help of inorganic materials under certain conditions. These inorganic materials were ammonia, carbon dioxide, methane and radiation.

The early condition of earth was also created by Miller and Urey in his experiment which proved that all the organic molecules are formed from the inorganic molecules.

Organic molecules formed from inorganic molecules roughly 4 billion years ago possibly through energy input from lightning in a reducing atmosphere containing gases like ammonia and methane. Experiments like Miller-Urey's support this theory, and extraterrestrial sources like meteorites may also have contributed to the prebiotic environment.

Organic molecules, which are carbon-containing compounds, are critical for life. You asked specifically about the conditions needed to form organic molecules from inorganic molecules. The formation of these molecules about 4 billion years ago likely involved energy input, such as lightning in Earth's early atmosphere, which contained gases like ammonia, methane, water vapor, and carbon dioxide. Experiments, like the famous one conducted by Stanley Miller and Harold Urey in 1953, demonstrated that under such conditions, a mixture of gases when subjected to electrical sparks could synthesize organic molecules from inorganic precursors, generating amino acids, lipids, sugars, and some nucleotide bases.

Aside from Earth-based synthesis, extraterrestrial origins have also been proposed. It's hypothesized that meteorites, comets, and asteroids may have brought organic molecules to Earth during what is known as the period of heavy bombardment, contributing to the primordial soup necessary for the development of life.

Contrary to point, the presence of oxygen is not necessary for the development of organic molecules and was likely absent on the early Earth during the formation of these molecules. Instead, a reducing atmosphere is believed to have facilitated this process.

Answer:B

Explanation:

Because aerobic respiration produce alot of energy (looking at kreb's cycle, ETP,)