The diagram shows a straight chain of glucose molecules.


Which polysaccharide is shown?



cellulose

glycogen

chitin

starch

The correct answer is option (c). Cells being formed from pure water.

The cell is composed of many different substances. All the different substances of the cell cannot be obtained by pure water only.

The pure water only contains hydrogen and oxygen molecules. But, the most abundant atom in the cell is carbon and also have nitrogen, sulfur and other atoms. Pure water cannot provide atoms other than hydrogen and oxygen, so, it is impossible for the cell to be formed by pure water.

Answer: True

Asexual reproduction is a process in which single parent organism produces offsprings.  This occur in simple organisms like bacteria, prokaryotes and fungi where a single cell breaks down into two or more numbers of daughter cells. The asexually reproduction can cause undersirable proliferation because the environment will not be able to sustain such a undesirable  increase in number of offsprings and ultimately offsprings will die.

Answer:

Electrolytes

Explanation:

An electrolyte is a substance that conducts electricity when dissolved in a polar solution e.g water. They are particles that carry a positive or negative electric charge called Cations and Anions respectively.

Electrolyte can also be referred to as a substance that dissociates into ions in solution and acquires the capacity to conduct electric currents. It becomes an ionic conductor when fused or dissolved in a suitable solvent.

Electrolytes include Sodium, pottasium, calcium, bicarbonate and magnesium amongst other body minerals. These minerals carry a small electric charge in fluid environment.

Electrolytes conducts electric current in solutions. Therefore, the correct option is option B.

In order for our bodies to function properly, electrolytes are necessary, and realising this can do a lot for our general health. They are minerals that, when dissolved in water, take on an electrical charge and are necessary for a number of physiological activities. Sodium is one of the most well-known electrolytes. It is essential for maintaining the equilibrium of bodily fluids, neuron activity, and muscular contraction. Sodium influences how much water the body retains, which influences blood pressure. However, consuming too much sodium can result in health problems like high blood pressure and fluid retention.

Therefore, the correct option is option B.

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Final answer:

Thiobacillus denitrificans helps in the bioremediation of groundwater by performing denitrification, converting excess nitrates into nitrogen gas and reducing nitrate pollution.

Explanation:

Thiobacillus denitrificans plays a crucial role in the biogeochemical cycles by performing denitrification. This specialized species of bacteria helps in bioremediating groundwater by converting excess nitrates (NO₃⁻) into nitrogen gas (N₂), effectively reducing nitrate pollution. Denitrification is an essential process in the nitrogen cycle as it prevents the accumulation of nitrates which can lead to eutrophication of aquatic systems and groundwater contamination. Denitrification by Thiobacillus denitrificans demonstrates the beneficial application of bacteria in removing pollutants from the environment, supporting sustainable agriculture and ecosystems.

Answer:

b) hybridization

Explanation:

Hybridization is the process of generating an offspring known as a hybrid from a cross between two individuals belonging two different species in order to accommodate the characters of these species into a single individual.

Since chicken and turkey are different species, a cross between them would lead to the generation of a hybrid known as Turkin.

The right answer is in a cell's nucleus.

The nucleus contains the DNA (deoxyribonucleic acid) on which is encrypted the genetic information: the chromosomes.

When the cell is not in a fission period, the DNA is pelletized and the chromosomes can not be seen. On the other hand, as soon as it enters the period of fission, the DNA unfolds and the chromosomes are clearly visible in batonets, so that they can be doubled.

Answer: The correct answer is -

B) photosynthesis

Explanation:

Photosynthesis can be described as process of creating food (in the form of glucose) in green plants, algae, and some protist (that are called producers). It uses inorganic molecules that are carbon dioxide and water in the presence of energy from sunlight to synthesise glucose and release oxygen as waste in surroundings.

It takes place in the specialized membrane bound organelles, called chloroplast.

Producers occupy the base of any food chain, which can be represented by energy pyramid, thus they produce enough chemical energy to support the entire ecosystem through photosynthesis.

Explanation:

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Mitochondria with organelles present in eukaryotic cells. In them, cellular respiration occurs, a process by which carbon dioxide is converted into oxygen. In addition, the Krebs cycle that is part of cellular respiration occurs.

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The answers is:

In a dihybrid cross, the F2 will have nine genotypes, but only four phenotypes because the Heterozygous genes cause the Dominant traits to mask the Recessive traits.

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Answer

heterozygus, dominant , ressesive traits

Explanation:

i did this test and got it right

Answer:

B) Gamete mutations, C) Recombination

Explanation:

Any random changes in the DNA of gametes are called as gamete mutations. These mutations are transmitted to the next generation via gametes and thereby the genetic variations are increased.

Recombination is the production of new gene combinations. Crossing over during meiosis I of gamete formation add new gene combinations to gametes. Random fertilization of these gametes add even more genetic variations to the progeny.  

Answer: c. The Earth’s surface is responsible for a small fraction of heat radiation to space.

Explanation:

In later ages the large amount of sun's energy is reflected back by the terrestrial surface back to the space. But now due to the abundance of large concentration of greenhouse gases in the atmosphere is responsible for the absorption of thermal energy from sunlight by these gases causing the atmosphere to be hot. This is the reason of global warming. Now only small fraction of heat is radiated back to the space.        

Abiotic being non-living or sterile could cover a lot of elements in a desert ecosystem. Rocks, water, air to name a few.

Answer:

(B): Gravity pulled particles of dust and gas together to form planets.

Explanation:

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Answer:

Option B. Gravity pulled particles of dust and gases together to form planets.

Explanation:

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No, a dead cell cannot carry out active transport as it requires ATP, which dead cells do not produce. Diffusion may continue passively for some time, but active processes cease with cell death.

Can a dead cell carry out diffusion and active transport? No, a dead cell cannot carry out active transport because active transport requires energy, which is usually obtained from ATP. Living cells use metabolic energy to maintain concentration gradients of ions and other substances across their membranes. This energy is particularly crucial for active transport processes such as the Na+-K+ ATPase pumps in red blood cells, which maintain the imbalance of sodium and potassium ions across the cell membrane. Once a cell dies, it ceases to produce ATP, thus halting active transport mechanisms. While diffusion is a passive process that might continue for a time after a cell perishes due to existing concentration gradients, without ATP, the active transport processes cannot occur in a dead cell.

The crucial regulatory, controlling and communicating system of the body is called the nervous system. It has an important role in acquiring and giving responses to a stimulant.

Therefore, PNS and central nervous system are interrelated to each other for functioning.

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Answer:

In humans, blood group is determined by three alleles [tex]I^{A}[/tex], [tex]I^{B}[/tex], and [tex]i[/tex].

[tex]I^{A}[/tex] and [tex]I^{B}[/tex] are co-dominant whereas [tex]i[/tex] is recessive to other two.

Thus, if a person with blood group O produces offspring with blood group B then the other parent must contain [tex]I^{B}[/tex] allele.

The genotype of other person can be [tex]I^{A}I^{B}[/tex], [tex]I^{B}I^{B}[/tex], or [tex]I^{B}i[/tex].

There is only one condition in which the person can have offspring with blood group O that is, when the other parent is [tex]I^{B}i[/tex].

In this condition, the probability of an offspring to have blood group O is 50%.

In other conditions, the probability of an offspring to have blood O is 0%.

In the best case scenario where the type B parent is heterozygous (BO), there is a 50% probability that the offspring produced with a type O blood person (ii) will have type O blood. If the type B parent is homozygous (BB), all offspring would be type B with no possibility of having type O blood.

When a person with type O blood (genotype ii) produces offspring with a person with type B blood, the offspring's blood type depends on the genotype of the type B parent. Provided the type B parent is heterozygous (genotype BO), which is the best case scenario for offspring to have type O blood, the possible genotype combinations would be Bi and iO.

The offspring would have a 50% chance of inheriting the O allele from the type O parent (genotype ii) and the O allele from the type B parent (BO), resulting in a genotype of type O (ii) for the offspring. Consequently, the offspring would have a 50% probability of having type O blood.

If, however, the type B parent is homozygous (BB), then all offspring would inherit one B allele and would not have the chance of being type O. Thus, they would all be type B.

The correct answer is B, unicellular organisms are made up of one cell. They can have complex structures and functions, but they do not have specialized cells, are not all plants, and do not lack organelles.

The subject at hand is unicellular organisms. When considering unicellular organisms, the following statement is true: they are made up of one cell. Therefore, the correct answer to the question is B - they are made up of one cell. Unicellular organisms may have complex internal structures and can perform all the life functions within that single cell. They may have organelles and specialized structures, such as flagella for movement. However, unicellular organisms do not have specialized cells since each organism is comprised of a single cell. They are not all plants but can be found across various classifications such as bacteria, protozoa, and some algae.

Answer;

-Heat capacity

-Water can absorb more heat than land, but water does not increase in temperature as fast because it has a high heat capacity.

Explanation;

-Heat capacity is the capability of water to absorb heat without undergoing an increase in temperature. For water to increase in temperature, its molecules must be made to move faster within the water; which requires breaking hydrogen bonds that absorbs heat.

Answer:

1:endo

2:exo

3:exo

4:neither

Explanation: