According to the cladogram below, which of the following organisms had a
segmented body and jaws but no limbs?

A. D
OB. E
OC. C
OD. F

Answer:

A pair of genes

Explanation:

Answer:

a pair of genes

Explanation:

The seawater dilute the saliva in them, so the necessary digestive enzymes they can't use.

ANSWER:

CTATCGCTTAG

Explanation:

thymine always pairs with cytosine

guanine always pairs with adenine

The major organ of the body that physically separates the internal environment it protects and maintains from the exterior environment is the integumentary system.

The epidermis, dermis, hypodermis, related glands, hair, and nails are all a part of the integumentary system.

This system performs a variety of complex tasks in addition to serving as a barrier, including controlling body temperature, maintaining cell fluid, synthesizing vitamin D, and detecting stimuli.

In order to do these tasks, the system's numerous parts cooperate. For instance, thermoreceptors, which control peripheral blood flow, perspiration intensity, and body hair, regulate body temperature.

Therefore, The major organ of the body that physically separates the internal environment it protects and maintains from the exterior environment is the integumentary system.

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Answer:

A. Selective breeding

Explanation:

Imagine your at school or where ever you wanna be and you see a girl/boy that you really like because of their lips or how great their hair looks or the size of their eyes or what ever else. ( Sorry for some of those very visual images there... ) That's called selective breeding.

Answer:

answer me pls

Explanation:

Answer:

1.El aparato excretor se encarga de expulsar de nuestro cuerpo los desechos. Para ello utiliza el sistema urinario y las glándulas sudoríparas. El sistema urinario filtra la sangre para limpiarla de desechos y produce la orina. Las glándulas sudoríparas producen el sudor y regulan la temperatura de nuestro cuerpo

2.Su función es eliminar mediante un proceso de filtración los productos de deshecho resultantes del metabolismo celular o incorporados desde el medio ambiente, por ejemplo durante la alimentación, exceso de sal en las aves marinas, etcétera. El principal sistema de excreción en los animales es el sistema urinario

3.La excreción en plantas es para extraer sustancias que luego pueden ser utilizadas por ellas mismas para realizar sus funciones de fotosíntesis y de respiración, o bien, acumularla en sus vacuolas para sustancia de reserva. ... Se pueden acumular en vacuolas o espacios intercelulares

The volume of a monatomic ideal gas triple in an isothermal expansion. This statement is false.

If n moles of an ideal monatomic gas undergo an isothermal expansion at temperature T during which the volume of that ideal gas becomes four times. The work done on the monatomic gas is nRTln4. The change in internal energy of the gas is zero. An isothermal process is a thermodynamics process in which the temperature of the system remains constant. T=0. Since the air doesn't work on expanding, it loses heat, consequently, heat must be added to the air to maintain it at constant temperature. When an ideal gas is subjected to isothermal expansion (∆T = 0) in vacuum the work done w = 0 as p×ex=0. As determined by Joule experimentally q =0, thus ∆U = 0. For isothermal reversible and irreversible changes. It can be expressed as,  Isothermal reversible change: q = -w = p×ex(Vf-Vi).

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Answer:

Sedimentary rocks can be organized into two categories. The first is detrital rock, which comes from the erosion and accumulation of rock fragments, sediment, or other materials—categorized in total as detritus, or debris. The other is chemical rock, produced from the dissolution and precipitation of minerals.

Explanation:

blame the internet if this is wrong

Answer:

A. Photosynthesis

Explanation:

Photosynthesis is a process almost every plant goes through. The goal of the process is the create glucose, a sugar that can be turned into energy. Photosynthesis consists of 2 cycles: light-dependent and light-independent (aka Calvin Cycle). Photosynthesis requires carbon dioxide, water, and sunlight. These reactants can then be transformed into glucose and oxygen. Photosynthesis is the basis of energy for all animals.

Answer:

A. Photosynthesis

Explanation:

Plants make their own food by the process know as photosynthesis.

Answer:

The human body needs many different enzymes because of all of its complex metabolic activities and processes.

Oxygen is taken into cells by the process of simple DIFFUSION.

In conclusion, oxygen is taken into cells by the process of simple DIFFUSION.

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Answer:

The answer is all of the above are correct.

Explanation:

Chemosynthesis occurs in bacteria and other organisms and involves the use of energy released by inorganic chemical reactions to produce food. All chemosynthetic organisms use energy released by chemical reactions to make a sugar, but different species use different pathways. For example, at hydrothermal vents, bacteria oxidize hydrogen sulfide and add carbon dioxide and oxygen to produce sugar, sulfur, and water:  

CO2 + 4H2S + O2 ⇒ CH20 + 4S + 3H2O.

Chemosynthesis is the process by which food (glucose) is made by bacteria using chemicals as the energy source, rather than sunlight. Chemosynthesis occurs around hydrothermal vents and methane seeps in the deep sea where sunlight is absent. During chemosynthesis, bacteria living on the seafloor or within animals use energy stored in the chemical bonds of hydrogen sulfide and methane to make glucose from water and carbon dioxide (dissolved in seawater). Pure sulfur and sulfur compounds are produced as by-products.

In Avery, MacLeod, and McCarty's experiment, the enzyme present in the mixture of R and S strains that did not result in the death of mice was DNase. This enzyme breaks down DNA, preventing transformation.

Avery, MacLeod, and McCarty conducted their experiment to determine the substance responsible for transforming nonvirulent bacteria (R strain) into virulent bacteria (S strain). They treated the mixture of R and S strains with different enzymes, including protease (which breaks down proteins), RNase (which breaks down RNA), and DNase (which breaks down DNA). When the mixture was treated with DNase, the transformation process was halted, and the mice remained alive. This indicated that DNA was the primary substance responsible for the transformation.

This groundbreaking experiment provided strong evidence that DNA, not proteins or RNA, is the genetic material responsible for the inheritance of traits. The DNase enzyme played a crucial role in this discovery, as its presence in the mixture of R and S strains prevented the transmission of virulent traits and demonstrated the importance of DNA in the process of transformation.

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huge explanation

In Drosophila, the sex of the individual is determined by the presence of X and Y chromosomes, with females having two X chromosomes (XX) and males having one X and one Y chromosome (XY). The genes located on the X chromosome are said to be X-linked and follow different inheritance patterns in males and females.

In the cross involving two X-linked genes, we can use the following notation:

- w+ = wild-type allele for gene 1

- w = mutant allele for gene 1

- y+ = wild-type allele for gene 2

- y = mutant allele for gene 2

- X = X chromosome

- Y = Y chromosome

Assuming that the genes are located on the same X chromosome, we can predict the genotypes of the F1 females by crossing a w+ y/X male with a w y+/X female. The Punnett square for this cross would be:

| w+ y | w y+

--- | --- | ---

X/Y | w+ y/X | w y+/X

X/X | w+ y/X | w y+/X

From the Punnett square, we can see that all F1 females would be heterozygous for both genes, with the genotype w+ y/X. This is because the X chromosome from the male carries the w+ allele for gene 1 and the Y chromosome carries the y allele for gene 2, while the X chromosome from the female carries the w allele for gene 1 and the y+ allele for gene 2. Therefore, all F1 females would inherit one wild-type allele and one mutant allele for both genes.

In the F2 generation, we would expect to see a 1:1 ratio of w+ y/Y males to w y+/Y males, as the Y chromosome determines maleness and does not carry the genes of interest. The fact that almost 98% of the males in the F2 generation are either w+ y/Y or w y+/Y suggests that the genes are closely linked on the X chromosome, with very few recombinant offspring. This further supports our assumption that the genes are located on the same X chromosome and that the F1 females have the genotype w+ y/X.

Answer:

combustion of fossil fuels

Explanation:

greenhouse gas levels are so high right now primarily because we have released them into the air by burning fossil fuels. the gases absorb solar energy and keep heat close to Earth's surface, rather than letting it escape into space. that trapping of heat is known as the greenhouse effect.

Answer:

The plasma membrane is a thin layer of lipid molecules that surrounds the cell and separates the inside from the outside. The fluid mosaic model describes the structure of the plasma membrane as a two-layered structure of phospholipids with embedded proteins. This model explains how the structure of the plasma membrane allows it to act as a selective barrier, regulating the movement of substances in and out of the cell.

Structure S in the plasma membrane is represented by the phospholipids, which form a lipid bilayer with hydrophilic heads facing outwards and hydrophobic tails facing inwards. The hydrophilic heads are in contact with the extracellular fluid and intracellular fluid while the hydrophobic tails are in the middle of the membrane. The phospholipid bilayer provides a barrier that separates the inside and outside of the cell, restricting the movement of hydrophilic and large molecules through the membrane while allowing the passage of small and hydrophobic molecules.

Structure T represents the integral membrane proteins that are embedded in the lipid bilayer. These proteins have different functions, such as transport of molecules, cell signaling, and catalyzing chemical reactions. The proteins also contribute to the selective permeability of the membrane by regulating the movement of specific molecules in and out of the cell. For example, channels and carrier proteins regulate the movement of ions and larger molecules through the membrane while receptor proteins receive signals from the outside of the cell and relay them to the inside of the cell.

In summary, the plasma membrane is mainly composed of phospholipids and proteins according to the fluid mosaic model. The phospholipids form a lipid bilayer that acts as a barrier, while the proteins embedded in the bilayer regulate the selective permeability of the membrane by facilitating the movement of specific molecules in and out of the cell.

Explanation:

Sigma bonds are produced when two atomic orbitals overlap one another head-to-head, whereas pi bonds are produced when two atomic orbitals overlap one another laterally.

The overlapping of two atoms' atomic orbitals in a linear or coaxial pattern creates a chemical link known as a sigma bond. A pi bond is a particular kind of covalent link between atoms where the electrons are on top and bottom of the axis connecting the joined atoms' nuclei.

In essence, sigma and pi bonds are covalent connections created by the overlapping of orbitals. Covalent bonds are created when atomic orbitals overlap. Sigma bonds are made when two atomic orbitals overlap head-to-head, as opposed to pi bonds, which are made when two atomic orbitals overlap laterally.

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Many chemical reactions require water, including: Hydrolysis, Dehydration synthesis, and Photosynthesis.

Hydrolysis: This is a chemical reaction in which water is used to break down a compound into smaller molecules. The reaction involves the addition of a water molecule to the compound, which causes the bond between the molecules to break.

Dehydration synthesis: This is a chemical reaction in which water is removed from two molecules to form a new, larger molecule. During the reaction, a molecule of water is eliminated, and the remaining atoms combine to form a covalent bond.

Photosynthesis: This is a complex chemical reaction in which water is used as a reactant to produce oxygen and glucose. During photosynthesis, water is split into its component parts (hydrogen and oxygen) in a process known as photolysis. The oxygen is released into the atmosphere, while the hydrogen is used to power the synthesis of glucose.

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The processes of alcoholic fermentation, acetyl CoA formation, and the Krebs cycle all three produce CO₂. Therefore option B is correct.

The cytosol of the cell is the place where the alcoholic fermentation occurs. It is an anaerobic fermentation process that converts glucose into ethanol and carbon dioxide. The process is carried out by yeast in the absence of oxygen.

The Krebs cycle takes place in the mitochondria. In this process, the pyruvate, which is the product of glycolysis is converted to Acetyl CoA. The Acetyl CoA is then used in the Krebs cycle to produce CO₂, NADH, GTP, and FADH₂.

The Krebs cycle takes place in the matrix of the mitochondria where the required enzymes for this process are present.

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Answer:

P-waves travel faster than S-waves.

Explanation:

P-waves can go through solids, liquids, and gases. This allows them to go through the earth. Meanwhile S-waves shake the ground going crosswise and can only travel on the earth's crust.

Answer:

9/20+3(4-1)-7+\(2^{3}\)  

BODMAS stands for B-Brackets, O-Orders (powers/indices or roots), D-Division, M-Multiplication, A-Addition, S-Subtraction.

=9/2+12-3-7+\(2^{3}\)      Brackets is solved ..........3(4-1

=9/2+12-3-7+8       Orders(powers................\(2^{3}\)

=4.5+12-3-7+8        Division.............................9/2      

=16.5-3-1                  Addition..............................4.5+12 & -7+8

=12.5

When an enzyme binds a non-competitive inhibitor, the vmax will decrease but the kd will not change.

An enzyme is a protein that acts as a biological catalyst by increasing the rate of chemical reactions in living organisms. The substrate is the molecule that an enzyme catalyzes, while the active site is the region of the enzyme where the substrate binds.

An enzyme inhibitor is a chemical or molecule that inhibits the action of an enzyme. Non-competitive inhibitors can bind to the enzyme either at the active site or at an allosteric site. The activity of the enzyme is decreased by non-competitive inhibitors that bind to allosteric sites.

As a result, the Vmax (maximum velocity of the reaction) decreases, but the Kd (dissociation constant) does not change. This implies that the affinity of the enzyme for the substrate does not alter.

The Michaelis-Menten equation can be used to study the effect of enzyme inhibitors on enzyme-catalyzed reactions.

Therefore, when an enzyme binds a non-competitive inhibitor, the Vmax will decrease, but the Kd will not change.

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When you see a publication describing an enzyme from Candidatus Pseudomonas utahensis, you can infer that this organism belongs to the domain Archaea.

What are archaea?

Archaea are a type of single-celled organism that are similar to bacteria. They are members of the Archaea domain, which is one of three domains in the tree of life, along with Bacteria and Eukarya. While archaea and bacteria share many similarities, there are also significant differences between the two. Some archaea can survive in extremely harsh environments, such as those with high temperatures or acidity levels.The term Candidatus is used to describe organisms that have not been cultured or observed in the wild. Therefore, Candidatus Pseudomonas utahensis is a species of Archaea that has not been cultured or observed in the wild, but has been identified by its genetic material in environmental samples.

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Photosynthesis is the process used by plants,Algae and certain bacteria to harness energy from sunlight and turn it into chemical energy.

The atmosphere, which is the layer of gases surrounding the Earth, is most responsible for sudden weather changes such as heavy rain. It plays a crucial role in regulating and distributing weather patterns, including the formation of precipitation.

The atmosphere is the layer of gases surrounding the Earth, and it plays a crucial role in weather patterns and changes. It consists of various components, including water vapor, clouds, and air currents.

When Tasha reached a particular elevation in the mountain range and it started raining heavily, it indicates a significant change in weather conditions.

As Tasha ascended to higher elevations, she entered different layers of the atmosphere, which can have varying temperatures, humidity levels, and air pressure. These factors contribute to the formation of clouds and precipitation.

When the air rises along the mountain slopes, it cools down, causing the water vapor present in the air to condense and form clouds. Eventually, these clouds release rain or other forms of precipitation, resulting in the sudden heavy rainfall that Tasha experienced.

Therefore, the atmosphere, with its composition and dynamics, is primarily responsible for the sudden weather change Tasha encountered during her trekking expedition in the mountain range.

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The tree won't spend any calories no matter how much it has to transpire.

Calories are units of energy. They are basically the amount of energy required to raise the temperature of one gram of water by 1 degree Celsius. The question means to ask us how much energy will be spent by the tree.

The tree won't spend any energy in the process of transpiration. The process of transportation in plants is handled by the leaves which transpire water from their surface. This makes it so that the tree doesn't have to do anything which means no energy is spent!

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