which of the following muscles is voluntary
A.stmoach
B.tricep
C.heart
D.bladder

Structure D , The term "contractile vacuole" refers to this structure. The vacuole gathers extra water from the cytoplasm and contracts to release it. As a result, paramecium doesn't swell and explode in hypotonic liquids.

Specialized contractile vacuoles control the amount of water in cells. Its spherical form allows it to gather extra cell fluid and empty it outside. It is essential for preserving the osmotic pressure inside the cell. Protists are eukaryotes with only one cell and are found in wet and aqueous habitats.

As its name implies, the contractile vacuole expels water from the cell by contracting. The contractile vacuole periodically expands (collecting water) and contracts (releasing water). Several seconds are required for one cycle, depending on the species .

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tRNA molecules transport amino acids to the ribosome during protein synthesis. mRNA codons match tRNA anticodons.

Codons: Three nucleotides on mRNA molecules specify an amino acid during protein production. Codons represent amino acids or start or stop signals.

mRNA (messenger RNA) transmits genetic information from DNA to the ribosome. It guides protein synthesis.

Asparagine and glutamic acid can be integrated into a protein chain during protein synthesis.

Anticodons: Three-nucleotide sequences on tRNA molecules complement mRNA codons. They add the right amino acids to the protein chain.

Cytoplasm: Cellular functions including protein synthesis occur in the gel-like cytoplasm.

Ribosomes synthesise proteins. They help mRNA-encoded amino acids build protein chains.

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Answer:

Such discoveries hold great potential for identifying the key genes that helped spawn human civilization. Some argue that given the rate of current advances in cloning technology, a full genome sequence can be viewed as species' "insurance policy" that will guarantee that it

The identical chloroplast at Time 1 and Time 2 may appear differently due to variations in Developmental changes, Environmental factors, and Cellular damage because the appearance of chloroplasts can be modified by a variety of circumstances.

The pigments needed to gather photons and use light energy to catalyze the basic photosynthetic endergonic reactions that result in high energy molecules are found in the two multi-protein complexes known as photosystem I and photosystem II.

In a multiprotein complex known as the photosystem, light energy is transformed into chemical energy. The photosystem I (PSI) and photosystem II (PSII) types of photosystems are found in the thylakoid membrane, which is a part of the chloroplast.

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Answer:

Promoter.

Explanation:

It is promoter because Promoter is a DNA sequence where's the gene transcription begins. It is the

DNA sequence which RNA polymerase binds or join to

so as to begin transcriptionn of a gene . It is a region where the regulatory elements i.e protein will bind to and the Promoter sequences are found directly upstream or at the end of 5' of the transcription initiation site. This can also encode RNA such as mRNA, trans and so on.

Answer:

In order for animals to successfully be able to go through photosynthesis,

Explanation:

animals would need a chloroplast since photosynthesis occurs in the chloroplast of plant cells.

The determination of a positive result for the differential property typically involves a statistical analysis of the output of the function for a large number of inputs.

The differential property is a property of cryptographic functions, which refers to how small changes in the input of a function result in significant changes in the output. A positive result for the differential property means that there is a high probability that a small difference in the input will result in a significant difference in the output.

This analysis involves comparing the output of the function for pairs of inputs that differ by only one or a few bits. If the probability of observing a specific output difference for a specific input difference is significantly higher than the probability of observing that output difference for a random input, then the function is said to exhibit the differential property.

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Answer: probably 2

Explanation:

Laws enacted by the U.S. Department of Health and Human Services (DHHS) to safeguard subjects from dangers associated with research projects that any federal department or agency participates in.

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Answer:

false

Explanation:

The correct answer is : 

Large surface area for gaseous exchange to take place - c. Millions of alveoli present in each lung.

Diffusion of gases through cell surfaces is facilitated - e. Alveoli and capillaries have a one cell thick wall.

Distance for diffusion is kept short - e. Alveoli and capillaries have a one cell thick wall.

Steep concentration gradient is constantly maintained - d. Each alveolus has a thin film of moisture.

Quick access to the circulatory system - a. Each alveolus is closely surrounded by a network of capillaries.

The lungs contain millions of alveoli, providing a large surface area for gaseous exchange to take place. This large surface area ensures that there is enough space for the exchange of gases between the alveoli and the bloodstream to occur efficiently.

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search in messenger sailesh xettri

Explanation:

bike pic

The statement "Attack nonselectively on nonself cells, especially mutated and malignant cells" accurately indicates the function of natural killer (NK) cells within the immune system.

What are Natural killer cells?

Natural killer cells or NK cells are a type of lymphocyte that plays a critical role in the innate immune response.

One of their primary functions is to recognize and eliminate cells that are infected with viruses or have undergone malignant transformations, such as cancer cells.

Unlike other immune cells that require prior exposure or recognition of specific antigens, NK cells can attack a broad range of nonself cells without the need for prior sensitization.

They are particularly effective in targeting and destroying cells that display abnormal or altered surface markers, making them an essential part of the body's defense against viral infections and cancer.

Thus, the statement is correct.

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Roots are the part of the plant found under the soil and are responsible for anchoring the plant, as well as absorbing water and nutrients from the soil.

Given that they are not exposed to light, so they cannot perform photosynthesis. This means C is the right answer.

Answer:

pathway conveys the special sense of hearing. Information travels from the receptors in the organ of Corti of the inner ear (cochlear hair cells) to the central nervous system, carried by the vestibulocochlear nerve

Answer:

C

Explanation:

Answer:

Rotating crops and embracing diversity. ...

Planting cover crops. ...

Reducing or eliminating tillage. ...

Applying integrated pest management (IPM). ...

Integrating livestock and crops. ...

Adopting agroforestry practices. ...

Managing whole systems and landscapes.

The best practices for sustainable agriculture are the rotation of the crops, the maintenance of the diversity of the crops to avoid soil sterility, and the avoidance of chemical pesticides.

Sustainable farming is the most effective way to practice farming because it does not harm the soil while providing fertility, and many practices are used, such as using earthworms and compost instead of chemicals. Usage of the rotation crops; different crops should be cultivated rather than focusing on the single crop; more effective ways of watering, etc.

Hence, the best practices for sustainable agriculture are the rotation of the crops, the maintenance of the diversity of the crops to avoid soil sterility, and the avoidance of chemical pesticides.

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isolated an aerobic gram-positive, endospore-forming bacterium that grows well on nutrient agar is belong to the group Bacillales.

Bacillus, which means "stick" in Latin, is a phylum of Gram-positive, rod-shaped bacteria and contains 266 identified species. The term is also used to refer to the shape (rod) of other similarly shaped bacteria; the phrase is also used to refer to the class of bacteria to which this genus belongs, which is known by the plural Bacilli. Obligate aerobes, which require oxygen to survive, and facultative anaerobes, which may live without it, are two different types of Bacillus species. If oxygen has been utilised or is present, cultured Bacillus species test positive for the enzyme catalase.

Bacillus can transform into oval endospores and can survive for years in this inactive state. One species from Morocco is said to have had its endospore survive being heated to 420 °C. [2] When nutrients are scarce, endospore development often occurs as a result of bacterial division within the cell wall followed by engulfment of one side by the other. They aren't actually spores (i.e., not an offspring).  The genus was initially classified by endospore production, but not all of these species are linked to one another, and many species have been transferred to other genera of the Bacillota.  Each cell only produces one endospore. Heat, cold, radiation, desiccation, and disinfectants cannot harm the spores.

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Answer: human appendix

Explanation:

vestigial means of an organ or part of the body, that has become functionless in the course of evolution

Explanation:

due due to their size they are small and single celled....!!

Answer:

The answer is A tundra

Explanation:

hope this helps :)

The tundra, which is frequently damp and covered in ice, can catch fire. Wild land fires do happen and are a normal part of the ecosystem despite the long, harsh winters and brief summers. Thus, option A is correct.

Due to a lack of nutrients and the ground being frozen beneath the top layer of soil, very few plants can thrive on the tundra.

The winters are frequently bitterly cold, although the summers can be mild. With mean annual temperatures below 0 °C during six to ten months of the year, tundra winters are protracted, dark, and cold.

Therefore, tundra biome would be least likely to experience a wildfire caused by these factors.

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Answer:

31

Explanation:

it says I need more words so here ya go

The example of a fallacy of inevitability argument is those in poverty have poor judgment, so aid programs do not help. The correct option D

Fallacy of inevitability argument occurs when people argue that a certain situation is inevitable.

This argument also ignores the fact that poverty can be brought on by a variety of issues including

Therefore, The example of a fallacy of inevitability argument is those in poverty have poor judgment, so aid programs do not help.

The correct option D

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Answer:

vacuole

Explanation:

Plant cells have large central vacuole where water, salts, and sugars are stored and where materials are broken down and recycled with enzymes similar to lysosomes in animal cells.

vacuole- A membrane-bound cell organelle known as a vacuole. Animal cells typically have tiny vacuoles that aid in the sequestration of waste. Vacuoles in plant cells aid in preserving the equilibrium of water. A single vacuole may occasionally occupy the majority of a plant cell's inner volume.

Answer:

- Most living things need food, water, light, temperatures within certain limits, and air. Living things have a variety of characteristics that are displayed to different degrees: they respire, move, respond to stimuli, reproduce, grow, and are dependent on their environment.

Answer:

The existence of correlation implies no causal relationship: the two could be causally related to a third variable. For example, my age is correlated with the number of TV sets in the UK but obviously there is no causal link between them - they are both linked to time.

Explanation:

Answer:

In Years with more rainfall, the level of the lake increases.

Explanation:

Got it right on Edmentum

The new Velocity_max is 0.5 mM per minute, which corresponds to option A.

To calculate the new Vmax, we can use the Michaelis-Menten equation, which relates the reaction rate (Vo) to the substrate concentration ([S]) and the maximum reaction rate (Vmax). The equation is given as:

Vo = (Vmax × [S]) / (Km + [S])

We have two sets of data points:

[S] = 5.0 mM, Vo = 0.25 mM/min

[S] = 2.0 mM, Vo = 0.333333333333 mM/min (approximately 1/3 mM/min)

From the first set of data, we can calculate the Km value by rearranging the Michaelis-Menten equation as:

Km = ([S] × Vmax) / (Vo - Vmax)

Substituting the values, we get:

Km = (5.0 mM × Vmax) / (0.25 mM/min - Vmax)

Similarly, from the second set of data, we get:

Km = (2.0 mM × Vmax) / (0.333333333333 mM/min - Vmax)

Since Km should be constant, we can set the two equations equal to each other:

(5.0 mM × Vmax) / (0.25 mM/min - Vmax) = (2.0 mM × Vmax) / (0.333333333333 mM/min - Vmax)

By solving this equation, we find Vmax = 0.5 mM/min.

Therefore, the new Vmax is 0.5 mM per minute, which corresponds to option A.

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Despite this visual similarity to bacteria, archaea possess genes and several metabolic pathways that are more closely-related to those of eukaryotes, notably the enzymes involved in transcription and translation. Archaea exhibit a great variety of chemical reactions in their metabolism and use many sources of energy. they are mostly related to eukaryotic cells.

Explanation:

When compared to producing the same amount of conventional crude, tar sands extraction emits up to three times higher greenhouse gas emissions.

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