Lactase is a protein in the digestive tract that helps break down certain sugars found in milk. What is the main function of lactase? to provide structure to fight disease to maintain homeostasis to regulate cell reactions

Scientists use a variety of methods, including physical evidence analysis, eyewitness accounts, the principle of inference, and statistical analysis, to determine facts such as the presence of a second victim.

In science, evidence takes center stage in determining facts and conclusions. In regard to determining the presence of a second victim, scientists used a combination of methods. These include analyzing physical evidence, such as marks left on the site of incident, physical remains, or technological instruments used to track physical changes or emittances. In situations related to crime, DNA analysis can serve as an example of such method. Eyewitness accounts, as unreliable as they may be, also contribute evidence. Just as Donald Thomson was falsely identified as the perpetrator due to the victim's confusion between him and the real criminal she saw on television, valid identifications can narrow down possibilities as well.

Another significant method involves the principle of inference. Scientists consider each piece of evidence and draw conclusions based on them, just as was done in the quark hypothesis. Even if these conclusions are not definitive, they provide a launchpad for further investigations and can be revised as techniques become more reliable. Statistics are also of great importance. Through statistical analysis, patterns can be identified, and factors overlooked before can become clear, sometimes altering conclusions radically.

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Reptiles and amphibians are ectothermic, or cold-blooded. They are unable to generate their own body heat and thus cannot regulate their own body temperature.

Mammals and birds are warm blooded, which means they can make their own body heat. They can do this when it's too cold for them to survive outside.

Answer:

She found out that ___A___ parts of the oceans have a higher quantity of dissolved 02, whereas ___B___ parts of the ocean have a lesser quantity of it.

Explanation:

A) Cooler

B) Warmer

Hope this helps:)

Cold water holds more dissolved oxygen than warm water, impacting marine life and ecosystem health in aquatic environments.

The amount of oxygen that water can hold depends on various factors, with temperature being one of the most significant. Generally, colder water can dissolve more oxygen than warmer water. This is because the molecules in colder water are closer together and move more slowly, allowing oxygen molecules from the atmosphere to dissolve and stay within the water more easily.

Conversely, warmer water has molecules that are more spread out and move more quickly, which makes it harder for oxygen molecules to dissolve and remain in the water. Additionally, warm water often experiences increased biological activity, such as photosynthesis by algae and other plants, which can consume oxygen during the process, further reducing the dissolved oxygen levels.

This phenomenon has important implications for aquatic ecosystems. In areas with colder water, such as polar regions or deep ocean currents, there tends to be higher dissolved oxygen levels, supporting a diverse range of marine life. However, in warmer waters, such as shallow coastal areas or regions affected by climate change, lower oxygen levels can occur, potentially leading to oxygen-deprived "dead zones" where marine life struggles to survive.

Understanding the relationship between temperature and oxygen solubility in water is crucial for managing and preserving aquatic ecosystems and the diverse array of life they support.

Red blood cells play a huge part in the human body

Red blood cells transport oxygen throughout the body

They are able to carry oxygen because of an important protein called haemoglobin.

Not only does haemoglobin carry oxygen, but it's also responsible for the red color of our blood.  

If red blood cells didn't contain haemoglobin the cells wouldn't be able to do their job properly. If this happens we would slowly die

The role that red blood cells play in the human body is that they transport oxygen throughout the body.

Red blood cells, also known as erythrocytes, are the most abundant cell type in the blood. Their primary function is to carry oxygen from the lungs to the body's tissues and return carbon dioxide from the tissues back to the lungs to be exhaled. This oxygen transport is facilitated by haemoglobin, a protein within red blood cells that binds to oxygen.

While red blood cells are not directly involved in protecting against injury or disease-carrying microorganisms, they do contribute to the body's overall health by ensuring that tissues receive the oxygen they need to function properly. Additionally, red blood cells are not primarily involved in blood clotting; that process is mediated by platelets and a cascade of clotting factors.

The complete question is-

What role do red blood cells play in the human body?

They protect against injury.

They protect against disease-carrying microorganisms.

They transport oxygen throughout the body.

They aid in blood clotting.

Answer:

plants

Explanation:

apex

The parts of the alimentary canal listed in order are the mouth, pharynx or throat, esophagus, stomach, small intestine and large intestine. The alimentary canal is the digestive system and includes the parts of the body with which food comes in contact from eating to waste elimination.

The alimentary canal is the whole passage along which food passes through the body from mouth to anus. It includes the esophagus, stomach, and intestines. The intestines carry the food most of the way down, breaking down the food along they way. The intestines carry food from the esophagus to the stomach.

a multifactor group i think

The embryo of a pig and a calf is studied under the field of Developmental biology. In this field, one is concerned about how the species grow and develop. For that, one must have the embryo of a pig and a calf.  

The DNA of a pig and a calf is studied under the field of Molecular biology. This field deals with the study of the molecular composition of an organism, like the nucleic acids and proteins.  

Both the limb structure of a calf and a pig is studied under the field of comparative anatomy. Comparative anatomy refers to the field of study, which deals with the similarities or differences between the structure and anatomy of distinct animals or species.  

Answer:

developmenal biology ,molecular , comparative anatomy

Explanation:

In cell biology a centriole is a cylindrical cellular organelle composed mainly of a protein called tubulin. Centrioles are found in most eukaryotic cells. A bound pair of centrioles, surrounded by a shapeless mass of dense material, called the pericentriolar material (PCM), makes up a structure called a centrosome.

Artificial selection refers to the process by which humans selectively breed animals with close relatives to enhance certain traits, a common practice in domestication. This selection can affect genetic diversity and requires careful management to avoid health problems due to increased homozygosity.

When humans breed animals that are close relatives to enhance certain traits, this process is called artificial selection. This selective breeding is a common practice in domestication, where species are bred to accentuate traits that are beneficial to humans. For example, a farmer might only breed sheep with the softest wool or dogs with specific temperaments to create or maintain specific breeds. This is different from assortative mating, which is a natural tendency among species to mate with individuals that resemble themselves in some way.

Artificial selection can lead to a change in genetic diversity within a population, often increasing the prevalence of advantageous traits. However, it can also lead to increased homozygosity and the potential for harmful recessive alleles to surface, which is something that needs to be managed carefully to avoid detrimental health effects in the animals.

Answer: nonmetallic mineral resources

Explanation:

Glycolysis converts glucose into pyruvate, fueling cellular energy production through fermentation pathways.

Glycolysis is a metabolic pathway that breaks down glucose into pyruvate molecules, providing energy for the cell. In fermentation, pyruvate is converted into other molecules to regenerate NAD+ so glycolysis can continue without oxygen. Fermentation pathways use organic molecules as final electron acceptors derived from pyruvate.

Phosphorus runoff from farming practices into water bodies such as oceans and lakes can result in harmful eutrophication. This excess nutrient can encourage the rapid growth of algae which, when they decompose, deprive the water of oxygen. This can be harmful or lethal to aquatic species, disrupting the ecosystem.

Phosphorus runoff from farming practices can negatively affect the ecosystem of bodies of water, such as oceans and lakes. When excessive phosphorus enters these water bodies, it can cause a process known as eutrophication. Eutrophication refers to the enrichment of a water body with nutrients, which encourages the rapid growth of algae, also called algal blooms. As these algal blooms die off, they are decomposed by microorganisms that use up oxygen in the water. This depletion of oxygen can be harmful, if not deadly, to fish and other aquatic species and therefore disrupts the balance of the ecosystem.

Learn more about Phosphorus Runoff here:

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It is B the saturated triglyceride

Answer:

The correct answer would be B) a saturated triglyceride  

Triglycerides refer to the ester formed by three fatty acid chains and glycerol.

They are the main contributors for the body fats in animals, humans, and vegetable fat.

They can be of two types; saturated and unsaturated.

Saturated triglycerides are those in which there is no double or triple bonds are present in the fatty acid chains that are, they are saturated with hydrogen.

Unsaturated triglycerides are those in which double or triple bond is present in fatty acid chains.

Model organisms are extensively studied to provide insights into human biology and have been used in research ranging from genetic studies to the development of treatments for diseases. Organisms like mice, fruit flies, and nematodes are examples widely used in such research, with sequenced genomes aiding in cross-species biological understanding.

Model organisms play a crucial role in human biology research as they are used to understand biological phenomena with the expectation that findings will provide insights into human biology. These species, ranging from bacteria like E. coli to multicellular organisms such as mice, are researched extensively, allowing scientists to study diseases and their treatments in a way that minimizes risk to humans.

For example, the mouse Mus musculus has become an invaluable model for studying obesity related to high-fat diets, with its genome among the first of multicellular organisms to be sequenced. These sequenced genomes provide a wealth of information that aids in understanding biological processes across species.

C. elegans and yeast like Saccharomyces cerevisiae are also key model organisms that have furthered our understanding in areas such as developmental biology and genetics. Fungi like Neurospora crassa have been instrumental in genetic research, serving as simpler eukaryotic models that provide relevance to human biology.

Oxygen and Silicon

this is your answer

It is because of different arrangements of nucleotide bases.

There are only five types of nucleotide basis are present in the genetic material which makes up the all the genetic information of the individuals. These nucleotides are named as Adenine, Thymine, Guanine, Cytosine and Uracil. In all the living beings on the earth, these only five nucleotides are present which decides their behaviour and functions on the earth. These five bases have features to get any arrangements according to the situation. Their different arrangement at the heredity material makes the difference in all living beings regarding their behaviour.

DNA, composed of nucleotide bases, carries genetic information for each organism, leading to the incredible diversity of life on Earth.

DNA (deoxyribonucleic acid) is composed of nucleotides, which are molecules made up of sugars, phosphates, and nucleotide bases. These bases, adenine, thymine, cytosine, and guanine (A, T, C, G), organized in long chains, carry the genetic information for each organism. The diversity and complexity of life arise from the order of these nucleotide bases in the DNA sequences.

Plants transform the Sun's light energy into chemical energy during the process of photosynthesis.

There is a energy transformation:

(Sun light) Photo energy  →  Chemical energy  (Carbohydrate)

The sun light is absorbed by pigments, then this energy is used in the photosynthesis for the reaction of CO2 and H2O to form glucose.

a narrow variable band of very strong predominantly westerly air currents encircling the globe several miles above the earth. There are typically two or three jet streams in each of the northern and southern hemispheres.

It is the chemical properties of a substance, which determines that how the substance will react when combined with other substance.  

The usual properties of a substance like density, color, and hardness are some of the illustrations of physical properties. The properties, which illustrates that how a substance modifies into a completely distinct substance are known as chemical properties.  

Some of the examples of chemical properties are oxidation, toxicity, the heat of combustion, and flammability, enthalpy of formation, radioactivity, and chemical stability under particular conditions.  

Answer:

It is the synthetic properties of a substance, which verifies that how the substance will respond when joined with other substance.  

Explanation:

The standard properties of a substance like thickness, shading, and hardness are a portion of the delineations of physical properties. The properties, which outlines that how a substance changes into a totally particular substance are known as compound properties.  A portion of the models of substance properties are oxidation, poisonous quality, the warmth of burning, and combustibility, enthrall of development, radioactivity, and compound strength under specific conditions.

It is indeed true that only the water of marine ecosystems contains dissolved salt. Marine ecosystems, also known as salt water ecosystems, are aquatic ecosystems that waters harbor a substantial volume of dissolved salts. Definite features of individual salt water ecosystems differ significantly, however knowing their total basic surfaces gives an extensive image of their role, value and function. Furthermore, there are so many types of salt water ecosystem, the open ocean is not the only one. Other types include tidal zones, shorelines, estuaries, mangroves, coral reefs, salt marshes and swamps, hydrothermal vents and the ocean floor, just to name a few of the more main groups.

Answer:

true

Explanation:

A hypothesis could be "the amount of water affect the number of lice found on the trout".

Experiment could be designed with pools with different amounts of water in it. Pools with less water represent the water during the dry season, while those with more water represent the rainy season.

1. The right answer is the mucus filters the air.

Mucus are different viscous and translucent secretions, little or not very soluble in water, produced by specific glands of various organisms, and in these by various internal organs (eg by the goblet cells of the stomach) or internal mucosa or skin (eg fish, some amphibians, slugs, snails ...).

In humans, mucus produced in the lungs helps to protect the respiratory system by capturing and exporting many of the foreign particles that enter the nose or mouth with each inhalation. In response to inhalation of particles or allergens, mucus secretion increases (reflex and neurohumoral control process), excessively sometimes (in allergic or asthmatic patients).

2. The right answer is less air reaches the lungs (or it blocks the passage of air to the lungs).

Bronchiolitis is an acute infection of the lower airways of viral origin, affecting the small bronchi of infants and young children and spreading in a seasonal epidemic mode.

The clinical picture is due to an obstruction of the airways, on the one hand caused by a mucous plug obstructing the light, on the other hand due to inflammation of the wall. The mucous plug is created by the accumulation of dead cells and mucous secretions. The obstruction is only slightly related to the bronchial spasm, the smooth muscles being little developed at this age.

Answer:

filters the air and less air reaches the lungs

Explanation:

It depends, if u want to use books or use the internet to investigate. But yes some reading is need to have a complete investigation.

so it is true

question answered by

(jacemorris04)

Answer:

true

Explanation:

An atom is the fundamental(smallest) part of matter, that a chemical element can exist. However it may or may not be chemically stable in nature, due to several factors such as its electronic configuration, imbalance in the force of attraction between the nucleus and electron etc… It can broken down into simpler particle, which can depict the characteristics of an element. An atom represents only a single element.

A molecule is a group of chemically bonded atoms(reacted) which may be of similar elements(H2 molecule, O2 molecule) or different (H2O molecule, HCl molecule), which is formed due to the interaction between atoms in different ways, so as to attain chemical and electrical stability

Answer:

An iota is the fundamental(smallest) some portion of issue, that a concoction component can exist. Anyway it could conceivably be artificially steady in nature, because of a few factors, for example, its electronic arrangement, lopsidedness in the power of fascination between the core and electron and so fort.

Explanation:

It can separated into more straightforward molecule, which can delineate the qualities of a component. An iota speaks to just a solitary component.  A particle is a gathering of artificially reinforced atoms(reacted) which might be of comparative elements Hydrogen particle, Oxygen atom or extraordinary (H2O atom, HCl atom), or, in other words to the communication between molecules in various routes, in order to achieve compound and electrical security

Climate – Desert soils form in arid climates, where evaporation is more than five times the annual precipitation from rain and snow. ... Soil formation is usually limited to near the surface because water is not moving through the soil. Desert soils have B horizons.

Answer:

An arid region that on average receives less than 25 centimeters of rain a year.

Explanation:

Edgn 2021

eukemias that are caused by a mutation called Philadelphia chromosome are CML and Philadelphia chromosome-positive ALL. The mutation is a translocation, identified as, t(9;22)(q34;q11). This abnormal chromosome contains a fusion gene, consisting of the ABL gene and the BCR gene, producing the BCR-ABL oncogene.