Pluripotent stem cells are of particular interest to stem cell research because they have the abilityto develop into any cell type in the body. This means they could be useful in treating diseases suchas cancer, Parkinson's disease, and multiple sclerosis.Why is the study of pluripotent stem cells controversial?O A. because they are created by cloningOB. because they are isolated from human embryosOC. because they can transform into cancerous tissueD. because they are created artificially in Petri dishes

The enzymes activity is mensured to indicate the rate of reaction catalysed by that protein, the action of the enzyme is to decrease the time required for a natural reaction to occur, for example the sucrase breaking down the sucrose, or a lactase for lactose. Therefore, the option with a example that is similar to enzymatic activity is A. reducing the force a ball needs to start rolling down a hill (the force for the start of the movement is comparable with the activation energy of a chemical reaction). The other options present situations opposite to what is expected from the action of a catalyst molecule.

Myelin, which is composed of Schwann cells, is an insulating layer that surrounds portions of the brain's axons. A protective covering known as myelin is produced by Schwann cells in the peripheral nervous system.

A protective layer or sheath called myelin develops around nerves, including those in the brain and spinal cord. It is composed of fatty and protein components. Electrical impulses may move swiftly and effectively along nerve cells because to its myelin layer.

Schwann cells make myelin in the peripheral nervous system (PNS: nerves) and oligodendrocytes in the central nervous system (CNS: brain and spinal cord). In the PNS, one Schwann cell forms a single myelin sheath

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As we know there are B cells and T cells are part of the immune system, B cells elaborate antibodies meanwhile T cells destroy infected cells: Therefore we can say that the correct answer is a.

Answer: The process by which green plants and some other organisms use sunlight to synthesize from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.

Mitosis produce 2 identical daughter cells. Each of these cells have the same number of chromosomes as the parent cell.

The budding yeast cell that is undergoing mitosis have the same number of chromosomes as the parent cell. Meiosis produce daughter cells having half the number of chromosomes of the parent cells.

Answer - Option 2 - They have the same number of chromosomes as the parent cell

Answer:

chromatids are attached to centromeres.

Explanation:

Answer:

C

Explanation:

chromatids is free of mutation

answer and explanation

According to the graph, the inclination of the ramp does not affect the speed of the toy car.

Speed refers to the rate of change of position of an object. Speed is measured as the ratio of distance covered by a body to the time in which the distance is covered. Speed is also defined as the rate of distance covered with time. The SI unit of speed is the combination of the basic unit of distance which is the meter and the second basic unit of Time. Thus, the SI unit of speed is meters per second. The formula of speed is

speed = distance time.

Velocity also refers to the speed of the object but in velocity, the object is moving in a specific direction.

According to the graph, there is no effect of the inclination of the ramp on the speed of the toy car but there is a direct effect on the distance of the ramp and the speed of the toy car. We can see in the graph that when we increase the distance of the ramp, the speed of the toy also increases and vice versa.

So we can conclude that there is no effect of the inclination of the ramp over the speed of the toy car.

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Answer:

Asian carp were brought into the United States intentionally by humans to capitalize on the carps dietary preferences.

Explanation:

Deforestation is the main cause of soil erosion. Without plant cover, there will be an occurence of erosion that will sweep the land into rivers. Trees and their roots gives the soil a defense and refuge from the wind and rain. When forest are eradicated, it makes the land exposed and vulnerable of being washed away by elements. Logging exposes soil to rain splash which lossens soil particles. It erodes the soil making a more impermeable bare surface that increase runoff.

When two monosaccharides undergo a condensation process with the removal of one molecule of water from the functional groups, a disaccharide—a kind of carbohydrate—is created.

Dehydration synthesis is a chemical process that converts monosaccharide molecules into poly- or disaccharide molecules. The monosaccharide molecules are united to produce the disaccharide or polysaccharide in such a process, which removes the water-containing components.

A glycosidic bond, a sort of condensation process, is formed when two monosaccharides come together. A water molecule is lost when the carbon of one sugar (often the carbon in position 1) interacts with the hydroxyl moiety of another sugar molecule.

When two monosaccharides are combined and a water molecule is eliminated, disaccharides are created.

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Diabetes can cause high blood glucose levels, which can harm your blood vessels as well as the nerves that regulate your heart and blood vessels. Heart disease may eventually result from this injury.

Those who have diabetes typically have heart disease at a younger age than those who do not. When compared to those without diabetes, adults with diabetes have approximately twice the risk of developing heart disease or stroke.

The good news is that actions you take to control your diabetes can also help reduce your risk of developing heart disease or stroke.

However, after the majority of the cells that generate insulin are destroyed, the pancreas is unable to produce enough of it, which prevents the glucose from entering the cells and causes an excess of glucose to be produced of dissolved blood sugar floating through the circulation. Risky complications may result from this. The name of this ailment is diabetic ketoacidosis.

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Answer:

Lipoprotein molecule

Carrier proteins are used in cell membranes for facilitated diffusion.

The movement of molecules in the direction specified by their relative concentrations inside and outside of the cell occurs during facilitated diffusion, just as passive diffusion.

The direction in which molecules move across the membrane is dictated by their concentration gradients and, in the case of charged molecules, by the electric potential across the membrane because there is no external source of energy.

The facilitated diffusion of carbohydrates, amino acids, and nucleosides through the plasma membranes of most cells is caused by carrier proteins. One of the most crucial transport tasks of the plasma membrane is the uptake of glucose, which acts as a key source of metabolic energy. The glucose transporter is a well-studied example of a carrier protein.

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Answer:

B

Explanation:

immune system protection

There are both similarities and differences in the cell division between plants and animals. The process by which an existing cell divides itself into two daughter cells is called mitosis.

Some differences include:

Eukaryotic cells, which include both animal and plant cells, share several characteristics. Common organelles including the cell membrane, cell nucleus, mitochondria, endoplasmic reticulum, ribosomes, and Golgi apparatus are among the organelles that share similarities.

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Answer:

The six types of communication are oral, interpersonal, nonverbal, written, visual, and listening. Oral includes any spoken speech and interpersonal involves verbal and nonverbal communication.

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In the core of cells, we can find the nucleus, which controls many of the cell functions and contains our DNA, that is found in chromosomes, thread-like structures made up of packaged DNA. The DNA, in turns, carries genes, sequences of nucleotides responsible for a product, which can be either an RNA molecule or a protein.

Answer:

A. A scientist must research to understand the topic before being able to create a scientific hypothesis.

Membrane proteins are those structures that are joint to the membrane of the cell, which allows it to have communication between its inside and its outside, but they have a limited size, and because of that, they keep great polar molecules outside the cell, also receive messages from neighboring cells, and recognize other types of cells, but they are not involved in the catalyzation of chemical reactions in the cells, since their function is mainly allow the movement of molecules from inside to outside or vice versa, and, as we've seen, also the communication between other cells.

So the answer to this question is D. Catalyzing chemical reactions in the cell, what they don't do.

Answer and explanation

Endoplasmic reticulum (ER) is a tubulus membrane that is found in the cytoplasm of the Eukaryote. It's structure consists of the nuclear envelope and the pheripheral endoplasmic reticulum.

Endoplasmic reticulum is divided into 1. smooth ER and 2. rough ER

1. Rough ER - has large numbers of ribosomes attached to the outer surfaces of the lamella membranes, this is the area of ribosomes important for protein production, storage and export. The modified proteins move slowly along the inside of the rough ER until they are packed into small vesicles of the endoplasmic reticulum. After packaging, the proteins are moved by elements of the cytoskeleton either to the Golgi apparatus or to the plasma membrane.

2. Smooth ER - Is involved in the synthesis of steroid. On the surface of smooth ER, there are no ribosomes, therefore it does not participate in the formation of proteins. Its function is to contains many enzymes and other proteins, in liver cells, that have the ability to detoxify a wide range of drugs and poisons.

The participant is having cramps in the muscles due to running and increased blood glucose level with the decreased oxygen saturation as it is an anaerobic exercise.

Overuse of a muscle, dehydration, and muscle strain or holding the same position for a prolonged period of time can cause a muscle cramp. In many cases, the cause of it isn't known. Although most of the muscle cramps are harmless, some of them may be related to an underlying condition, such as inadequate blood supply, compressed nerve, etc.

Reasons for the cramping of muscles are straining of muscle, compression of nerves, injuries in the spinal cord or a pinched nerve in the neck, Dehydration, or Low levels of electrolytes such as magnesium, potassium, or calcium.

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Answer

C

Explanation

Topsoil is the most fertile layer of soil, it is rich in microorganisms, humus and minerals.

DNA replication is called semiconservative because, in each copy that is made of the DNA, one of the strands comes from the template. This means that all copies of DNA retain one strand of the original DNA (semiconservative). Therefore, the image that best illustrates DNA replication is A.

Answer:they would turn back white

Explanation:once the soot is gone, they return to natural colour again due to camouflage

Considering the image given in the missing features or the features that won't be found in the Offspring are given as

Solid fur and spotted fur

This is further explained below.

Generally, The study of genes, genetic diversity, and the inheritance patterns of organisms is the focus of the biological discipline known as genetics.

Gregor Mendel, an Augustinian monk from Moravia who lived and worked in Brno throughout the 19th century, is credited with being the first person to conduct genetic research using a scientific approach.

In conclusion, considering the image given in the question below we can see that the tail and the body of the two rats are quite dissimilar and therefore they have variant features to pass on to their offspring therefore the features that are not found in both animals won't be won't be passed on to their offspring,

As a result, the traits that are absent or that won't be present in the offspring are described as solid fur and spotty fur.

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Answer:

A algea, liverworst, mosses

Explanation:

If number 1 is the single strand within the nucleus, it is mARN or messenger ARN. mARN has the genetic information needed to make proteins and carries this information from the DNA nucleus of the cell, to the cytoplasm where proteins are made.

Robotic systems are being already used to carry out some kinds of surgery, in order to make it less invasive and avoid mistakes. So the answer is letter D.

The tRNA sequence belongs to the complementary sequence of the mRNA sequence. Although an important conceptual difference is that tRNA goes in separate triplets, while mRNA is a continuos sequence. So, in this case the tRNA will be: UAC - UGA - UCG - ACC - CCC - AUA - AUG - AAA - AUC.

an importa