Which statement correctly describes the diagram?

Answer:

The correct option is D) Stars vary greatly in temperature

Explanation:

The temperature range for different type of stars varies from 3,000 Kelvin to 50,000 Kelvin. A red star is generally considered to be a lot cooler than a blue star or a white star. The stars which are bigger have more energy and usually have very high temperatures. The smaller stars are smaller star has less energy and has low temperatures. Hence, we can say that stars vary greatly in temperature.

Answer:

is D for a comman fact

Answer:

The common type of blood cancer include the following

1.Leukaemia

2.  Lymphoma.

3.  Myeloma.

Explanation:

Leukaemia is cancer of blood-forming tissues, including bone marrow. Many types exist such as acute lymphoblastic leukaemia, acute myeloid leukaemia and chronic lymphocytic leukaemia.

Answer:

It should be B.)

Explanation:

Enzymes are catalysts, which means they are not consumed by the chemical reactions they catalyze.

The correct answer is D. All enzymes are proteins.

D. All enzymes are proteins is the correct answer as it is NOT TRUE concerning enzymes. While the majority of enzymes are proteins, there are a few exceptions. Ribozymes, for example, are enzymes that are composed of RNA molecules rather than proteins.

Enzymes have optimal environmental conditions, which refers to specific pH and temperature ranges where the enzyme operates most efficiently. They are not consumed by the reactions they catalyze, meaning that they can be reused. Enzymes can catalyze only one or a very few different reactions, and they can catalyze both spontaneous and non-spontaneous reactions.

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A nuclear envelope forms around each set of chromosomes, and a nucleolus forms in each of the newly forming cells. Copied DNA coils into chromosomes. ... Kinetochore fibers move chromosomes to the cell's center.

Answer:

it will form a Telophase

Explanation:

During telophase, the newly separated chromosomes reach the mitotic spindle and a nuclear membrane forms around each set of chromosomes, thus creating two separate nuclei inside the same cell. As Figure 4 illustrates, the cytoplasm then divides to produce two identical cells.

Answer:

Homeostasis regulates heart rate by increasing heart rate when cells need more oxygen and decreasing heart rate when they need less oxygen.

Explanation:

Answer:

increase

oceans

wastewater

decomposition

currents

Individuals can control their use of water. Governments can help conserve water by encouraging farmers to plant climate-resistant crops that require less water. Switching to newer alternative energy technologies can reduce water used in fossil fuel and nuclear power plants for cooling.

Explanation:

The branch of science which deals with a living being is called biology.

The current question is fill in the blanks. The correct answer is as follows:-

The amount of drinking water is limited on the earth. As the population increases the water will be deficient for every species.

The only way to resolve this issue is to conserve the water in all possible ways out. Water conservation help in increasing the water amount use for daily chores and the extra water is can be used by the deficient person.

Hence, these are the answer to the following.

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Explanation:

Membrane proteins perform a variety of functions vital to the survival of organisms: Membrane receptor proteins relay signals between the cell's internal and external environments. Transport proteins move molecules and ions across the membrane. ... Cell adhesion molecules allow cells to identify each other and interact.

Answer:

they are caused by mutations of the X chromosome

Explanation:

The X chromosome contains many genes in addition to those that determine sex. Certain hereditary defects determine by recessive genes are linked to the X chromosome. The disorders are caused by mutations of the X chromosomes.

Answer:

D. Translated

Explanation:

The central dogma of molecular biology is that DNA is transcribed into mRNA, which is than Translated to protein.

The central dogma of molecular biology is a theory stating that genetic information flows only in one direction, from DNA, to RNA, to protein, or RNA directly to protein.

Francis Crick created the key dogma's underlying theory in 1958. His interpretation incorporated the idea that information does not transfer from proteins to nucleic acids and was a little more all-encompassing. Since then, researchers have found a number of deviations from the idea.

Prions are one famous example in particular. Prions are contagious proteins that can multiply without using intermediates like DNA or RNA.

Therefore, The central dogma of molecular biology is that DNA is transcribed into mRNA, which is than Translated to protein.

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Fleas on a dog represent parasitism because the fleas benefit by obtaining nutrients at the dog's expense, potentially causing illness to the dog. The example of parasitism among the options provided is B.

Parasitism is a type of symbiotic relationship where one organism, the parasite, benefits at the expense of another organism, the host. The flea acts as a parasite by living on the dog and deriving nutrients from it, while the dog suffers harm, often in the form of illness or discomfort. This detrimental effect on the host is a hallmark of parasitism.

Answer:

C.

Explanation:

passive transport does not require energy to be used, and it goes from a higher to a lower concentration.

Answer:

C = molecules cross the cell membrane without the use of energy

Explanation:

One way that cells maintain homeostasis is through passive transport. In this process, small molecules and ions cross the cell membrane without the input of energy from the cell.

Answer:

During evolution, plants have acquired a vascular system, which has greatly contributed to the success of land plants. The vascular system allows plants to rapidly transport water and nutrients over long distances between roots, growing deeply in soil, and shoots, growing upward toward the sun.

Answer:

It made it possible to move water within the plant structure.

Explanation:

The evolution of plants occurred, mainly, after atmospheric changes due to the release of oxygen by autotrophic organisms. Thus, the first species to colonize the terrestrial environment were bryophytes and mosses, and the main characteristic that facilitated colonization after the formation of multicellular organisms was the formation of epidermal tissue and structures that guaranteed protection against water loss, the movement of water within the plant.

In the Paleozoic period, the first plants with vascular systems emerged, which developed from the first plant groups that colonized the terrestrial environment. The vascular system is composed of xylem and phloem which are the vessels that conduct nutrients and water within the plant.

About 400 million years ago, ancestral plants went through several events of adaptive irradiation, and diversified into the different species that we know today. These adaptive events were fundamental for the colonization of the terrestrial environment, so that diverse environments with adverse conditions were colonized by the plants.

After the appearance of sap-carrying vessels, plants evolved and tall species emerged that constituted the first forests, even at the end of the Devonian period.

Most of the plants survived the extinction events of the Triassic period, however, the environmental and atmospheric changes may have caused more evolutionary events, mainly in relation to the formation of flowers and fruits, which exponentially increased the biodiversity of terrestrial flora from the period Cretaceous.

In addition to the morphological and physiological changes over evolutionary events, another important process in the evolution of plants is reproduction and, indirectly, dependence on water for this process.

Answer:

D

Explanation:

This is coming straight from USAtestprep, The paramecium will gain water in the hypotonic environment and will be unable to regulate its water levels, resulting in lysis.

The paramecium will gain water in the hypotonic environment and will be unable to regulate its water levels, resulting in lysis. Thus, option D is correct.

A paramecium is a single-celled, freshwater protist that lacks a cell wall but contains a contractile vacuole. The contractile vacuole is surrounded by rings of proteins that can contract when the vacuole is filled with water, expelling the water from the paramecium.

When the paramecium placed into a freshwater aquarium that has been treated with a chemical that disrupts the function of the contractile vacuole than the paramecium will gain water in the hypotonic environment and will be unable to regulate its water levels, resulting in lysis.

The paramecium will balance its water levels with exocytosis of water droplets through its membrane.The paramecium will expel sodium ions from its cytoplasm to allow less water to enter through its membrane.The paramecium will lose water to the environment without the ability to regulate its water levels, resulting in cell death.

Therefore, The paramecium will gain water in the hypotonic environment and will be unable to regulate its water levels, resulting in lysis. Thus, option D is correct.

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Answer:

b. thermal

Explanation:

When you’re wearing a big sweater, thermal energy is the kind of energy that keeping you warm. Thus, option B is correct.

The energy of the body by the virtue of its motion is known as the kinetic energy of the body. It is defined as the product of half of mass and square of the velocity.

The passage of vibrations through matter is characterized as sound energy. When an item vibrates, sound energy is created, resulting in noise. Sound vibrations induce pressure waves to flow through a material like air, water, wood, or metal.

Each magnetic field, also known as magnetic energy, includes energy. Electric currents create magnetic fields, magnetic energy is a kind of energy for transporting charge carriers.

Therefore, When you’re wearing a big sweater, thermal energy is the kind of energy that keeping you warm. Thus, option B is correct.

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Answer:

The correct option is "the exact location of a particular disease-causing gene can be determined."

Explanation:

The discovery of the human genome will let us know the sequence of normal genes in a human. By comparing to this sequence, one can easily know if there is any abnormality in the fetus. The exact location where a fault has occurred can be recognized if the sequence of the normal human genome is known. Hence, the discovery of the human genome is very beneficial to the process of amniocentesis.

A) Incorporating radioactive nucleotides.

Answer:

Smooth endoplasmic reticulum

Explanation:

The endoplasmic reticulum is a series of interconnected channels running throughout the cytoplasm. Some endoplasmic reticular have granules called ribosomes on their surfaces. The smooth endoplasmic reticulum are more specialized responsible for synthesizing and transportation of Lipids and breaking down of toxic chemicals from all parts of the cell.

Answer:

Smooth endoplasmic reticulum Or Smooth ER

Explanation:

I was just asked this on USA test prep.

Answer: avalanche, earthquake, flood, forest fire, hurricane, lightning, tornado, tsunami and volcanic eruption.

Explanation: Here extra catastrophic events

Answer:

Hurricane Katrina , the indian ocean tsunami,

Pangaea , and a volcanic eruption

Answer:

Closing of stomata to reduce transpiration.

Explanation:

Answer:

Gaseous cycle

Explanation:

Gaseous cycle inclines to travel more frequently than the sedimentary ones. To adjust more steadily to  the changes in the biosphere because of the large atmosphere reservoir. The buildup of carbon dioxide are soon dissipated by wind or taken up by the plants. The extraordinary disturbances i.e. global warming are more often than local disturbances which is wild fires and storm driven events. During the rock phase other salt deposits out as  rock  and sediment in shallow seas eventually to be weathered and can be recycled.

The question pertains to a stage in biogeochemical cycles where nutrients move rapidly; these cycles help maintain ecosystem health by keeping essential elements available.

The part of a biogeochemical cycle being described relates to a phase where nutrients are in a state of rapid movement and transition, typically referred to as the 'active' or 'main' cycle. In this stage, elements move swiftly through the ecosystem, being taken up by organisms, traveling through food webs, and also cycling through the physical environment, such as soil and water.

This rapid cycling ensures that essential elements remain available to support life. An example is the circulation of nitrogen, which can be rapidly integrated into biological systems through the process of nitrogen fixation and become part of the proteins and nucleic acids in living organisms.

In DNA, base pairs are held together by hydrogen bonds. Adenine and thymine are connected by two hydrogen bonds, while cytosine and guanine are connected by three. Sugar-phosphate backbones and nitrogen-carbon bonds do not hold the base pairs together.

In DNA, base pairs which consist of double-ringed nucleotides, are held together by hydrogen bonds. The base pairs adenine (A) and thymine (T) are held together by two hydrogen bonds, while the base pairs cytosine (C) and guanine (G) are connected by three hydrogen bonds. These hydrogen bonds allow these base pairs to hold together, providing DNA its double helix structure.

It should be noted that sugar-phosphate backbones form the outer sides of the DNA helix but do not hold the base pairs together.

Similarly, nitrogen-carbon bonds are present in the bases and the sugar molecule but these are not responsible for the bonding of the base pairs. They exist in the individual nucleotides and not in the double-ring structure formed by base pairs.

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In DNA, the base pairs (adenine with thymine, and guanine with cytosine) are held together by hydrogen bonds. It's not the sugar-phosphate backbone or any other components that keep the base pairs connected.

The base pairs in DNA are held together by hydrogen bonds. Specifically, in the double helical structure of DNA, composed of nucleotides, adenine (A) pairs with thymine (T) and guanine (G) pairs with cytosine (C). Each of these base pairs is bound together by hydrogen bonds with A and T sharing two hydrogen bonds, and C and G sharing three.

The sugar-phosphate backbone of the DNA strand, consisting of alternating sugar and phosphate groups, is external to the base pairs and provides structure to the DNA molecule. However, these backbones do not hold the base pairs together.

So, between the options provided, the answer is c) hydrogen bonds hold the base pairs together in DNA.

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Answer:

'The rule of 10' is associated with the pyramids of quantifying energy flow.

Only a small amount of energy is transferred from one trophic level to another. Most of the energy is lost in the form of heat. Hence, we quantify that about 10% of energy travels from one trophic level to another.

Let's say the producers have 100% energy. The primary consumers will only receive 10% of this energy. The secondary consumers will receive 1% energy from the primary consumers. The tertiary consumers will receive 0.1% energy. This is known as the rule of 10.

Answer:

  Variations Within Ecosystems

Ecosystem diversity can be described as a term which is used o describe the changes within an ecosystem and the impact these changes have on the environment and humans.

Variations within an ecosystem can cause genetic drifts. Variations will cause those organisms to survive which are better adapted to survive to the changes which occur in an ecosystem. And the organisms which are not better suited become extinct over a period of time. Hence, this will lead to a wide rise in biodiversity.

Answer:

Explanation:

Carbohydrates are compounds made up of carbon, hydrogen and oxygen(Glucose). They are sources of energy as they are broken down during respiration to release energy. They are storage forms of food and components of structures that provide mechanical support in organism.

Proteins are compounds made up of small units called amino acids. Proteins are components of structures in living organisms, important as metabolic regulators and are broken down to release energy in extreme starvation.

Lipids are compounds made up of fatty acids and glycerol. They are a source of energy for they are oxidised to release energy, are constituents of plasma membrane and protoplasm and act as heat insulators.

Nucleic acids are polymers made up of nucleotides. They store genetic information in a coded form.

Answer: The lithosphere is composed of both the crust and the portion of the upper mantle that behaves as a brittle, rigid solid. The lithosphere is the outermost mechanical layer of the Earth. The lithosphere is about 100 kilometers thick.

Explanation:

Answer: Lithosphere is the rigid, solid upper mantle connected to the crust. It is 200 kilometers thick. Temperatures at this layer are less than 1,300 degrees Celsius.

Answer:

2 reactants and 2 products. All are compounds

Explanation:

Answer : The correct option is, two reactants and two products.

Explanation :

Double replacement reaction : It is a type of chemical reaction in which a positive cation and a negative anion of two reactants exchange their places to form two new products.

It is represented as,

[tex]XY+AB\rightarrow XB+AY[/tex]

(X and A are the cations, Y and B are the anions)

For example : Barium chloride react with magnesium sulfate to give barium sulfate and magnesium chloride as a product.

The balanced chemical reaction will be:

[tex]BaCl_2+MgSO_4\rightarrow MgCl_2+BaSO_4[/tex]

From this we conclude that, there are two reactants and two products are present in a double-replacement reaction.

Hence, the correct option is, two reactants and two products.

Answer:

The phenotype of the sneaky neighbor dog will be pink. Let's consider the phenotype of our spotted gummed Labrador to be CPCB and neighbors dog to be CPCP

          CP          CB

CP     CPCP       CPCB

CP     CPCP      CPCB

The results of this cross show that there will be a probability of having pink dogs as well as spotted dogs. Hence, this proves that the neighbors dog had pink gums.

Final answer:

The genotype of the sneaky neighbor dog is likely pp, resulting in a pink gum phenotype, because when this dog mated with a Bp (black and pink spotted gums) Labrador, half of the puppies had pink gums.

Explanation:

The observation that half of the Labrador retriever puppies have spotted gums while the other half have pink gums suggests that gum coloration in dogs displays a pattern of co-dominance. In this case, the phenotype of the puppies informs us about the possible genotype of the parents.

Since the Labrador mother has spotted gums, her genotype for gum color must be one allele for black and one for pink, expressed as Bp. The appearance of some puppies with pink gums indicates they must be pp, receiving a pink allele from both parents. Thus, the father (the sneaky neighbor dog) must have a pp genotype to produce pups with pink gums when mated with a Bp Labrador.

To conclude, the phenotype of the sneaky neighbor dog is likely to be pink gums.

Answer:

white blood cells or WBCs

Explanation:

White blood cells are the cells that fight off infection and anyother thing that enters your blood stream