Which of the following statements about saliva is FALSE?

It contains the enzyme salivary amylasc.

It helps protect the tecth from decay.

It moistens food so that it can be tasted and
swallowed.

It contains a protein-splitting enzyme

It lubricates the mouth

Answer:

By means of this type of dating it is possible to obtain absolute dates, that is to say reliable ones, for the events of the geological past; these methods provide numerical ages.

Explanation:

Answer:

Geologists use both relative and absolute age dating methods to determine the ages of rocks in a sequence. Relative age dating uses the principle of superposition to determine the relative order of rock layers and the relative ages of the rocks based on their position in the sequence. Absolute age dating, on the other hand, uses radiometric dating techniques to determine the actual numerical age of a rock in years. By using both methods, geologists can get a more complete understanding of the geologic history of an area and the ages of rocks in a sequence

Answer: It is commonly used in estimating microbial populations in soils, waters, agricultural products and is particularly useful with samples that contain particulate material that interferes with plate count enumeration methods

24. Chromosome : The portion of DNA that is condensed and rod like

25. Gene : The portion of the chromosome that codes for the single protein.

Chromosomes : A chromosome is a lengthy DNA molecule that contains all or a portion of an organism's genetic code. The very long, thin DNA strands in most chromosomes are covered with packing proteins; in eukaryotic cells, the histones are the most significant of these proteins.

Gene : The fundamental structural and operational component of heredity is a gene. DNA is the component of genes. Some genes serve as blueprints for the synthesis of proteins.

Nucleotide : Nucleotides are organic compounds made up of a phosphate and a nucleoside. They function as monomeric units of the deoxyribonucleic acid and ribonucleic acid polymers, which are both crucial macromolecules for all kinds of life on Earth.

Codon: a DNA or RNA molecule that codes for a particular amino acid through a group of three successive nucleotides. Some codons serve as translational start or stop signals. Start, stop, or termination codons are the names given to them.

Amino Acid : Organic substances known as amino acids have both amino and carboxylic acid functional groups. Alpha-amino acids, which make up proteins, are by far the most significant of the hundreds of amino acids found in nature. In the genetic code, only 22 alpha amino acids are present.

Rest of matching:

26. Nucleotide: Subunits that makes up Nucleic Acid

27. Codon: A set of 3 nucleotides thats code for a single amino acid

28. Amino Acid : Subunits that makes up protien

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Answer:

C. Carbon

Explanation:

I gotchu, the answer is b. conduction, convection, and radiation! (hope it's right)

Answer: b

Explanation:

Answer:

A basic rule of splinting is that the joint above and below the broken bone should be immobilized to protect the fracture site. For example, if the lower leg is broken, the splint should immobilize both the ankle and the knee.

Answer:

Yes, u can

Explanation:

For everyday food, you can feed your chickens either chicken food (found at feed stores) or pig food. In Alberta, the UFA Hog Grower is the same as the chick starter except the pellets are bigger, and the hog grower contains fewer antibiotics. If you have access to grain then you can feed that to them

Luis is correct claims that the frequency of electromagnetic radiation is greater when the wavelength of the radiation is smaller.

Hertz is the unit of measurement here (Hz), if a light wave's wavelength is reduced, the frequency will increase since one cycle can occur more frequently. As a result, more cycles can pass past the set point in a single second.

The frequency and energy of radiation decrease as the wavelength of the radiation rises.

Therefore, the frequency of electromagnetic radiation is greater when the wavelength of the radiation is smaller.

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On  a coordinate plane, the triangle A B C has points, and the line of reflection that maps triangle A B C to triangle A' B' C' is the line x = 1 (last option), which is a vertical line that passes through the point (1, -1) and reflects the pre-image over this line to produce the image.

It is a type of transformation in which a pre-image is reflected over a line to produce an image, and each point in the pre-image is mapped to a corresponding point in the image; here, for the triangles ABC, the line of reflection is x = 1.

Hence, on a coordinate plane, the triangle A B C has points, and the line of reflection that maps triangle A B C to triangle A' B' C' is the line x = 1 (last option), which is a vertical line that passes through the point (1, -1) and reflects the pre-image over this line to produce the image.

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Answer:

y-axis on edge

Explanation:

picture below. I tried x = 1 but it was wrong, I actually took a look at the image and the y-axis was in between the 2 triangles.

The average degree of variability in your data set is represented by the standard deviation. It reveals the average deviation of each score from the mean.

A measure of a data set's variance from the mean is referred to as "standard deviation." While a high standard deviation indicates that the data are more spread, a low standard deviation suggests that the data are clustered around the mean. In statistics, the measurement of variability known as the standard deviation (SD) is frequently utilized. It demonstrates how significantly off the average things vary.

Because it aids in comprehending observations when the data is scattered, standard deviation is significant. The standard deviation of the data will be higher the more evenly dispersed the data.

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Answer: Animals communicate using signals, which can include visual; auditory, or sound-based; chemical, involving pheromones; or tactile, touch-based, cues. Communication behaviors can help animals find mates, establish dominance, defend territory, coordinate group behavior, and care for young.

Answer:

is there any answer choices?

A person who lived through a fire might be susceptible to respiratory infections because smoke particles could cause irritation of the respiratory passageway.

Smoke is a major component of fire. Thus, a person who lived through a fire and was pulled out of a burning building, unconscious by a firefighter would definitely have inhaled a lot of smoke.

Smoke particles cause irritation of the respiratory passageway. This renders the respiratory tract susceptible to colonization by pathogens, thereby leading to respiratory infections.

Apart from smoke, heat is also able to cause damage to respiratory passageways and predispose them to colonization by pathogens.

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DNA replication is semi-conservative because the original molecule separates into two different strands, and each of them works as a model for a new strand to grow. A) The daughter DNA molecule consists of 1 parent strand and 1 new strand.

DNI replication is semi-conservative because, after replication, each new molecule carries an original DNI strand and a new one. The fact that the new molecule is composed of an original strand makes it semi-conservative. The old existing strands are used to synthesize the new complementary strand.

The replication products are double-stranded DNA molecules, each carrying an original strand and a new one.

The correct option is A) The daughter DNA molecule consists of 1 parent strand and 1 new strand.

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In a semi-conservative model of DNA replication, the daughter DNA molecule consists of 1 parent strand and 1 new strand. Option 1.

The process of DNA is naturally semi-conservative.

This is because each strand of the original DNA forms a template for the synthesis of a complementary strand. Thereafter, each of the newly synthesized strands forms a double helix structure with their respective parent strands.

Thus, e newly replicated DNA molecule usually consists of 1 old strand and 1 new strand. Consequently, the process is described as being semi-conservative.

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The effects of teratogens on prenatal development is susceptibility, development stage, mechanisms, end points, access, and dose response.

Teratology is the study of abnormalities of physiological development in organisms during their life span. It is a sub-discipline in medical genetics which focuses on the classification of congenital abnormalities in dysmorphology.

Teratology is the study of birth defects, and its goals are (1) to describe and determine etiology, (2) to explore mechanisms involved in the production of birth defects and (3) to devise means of prevention.

A teratogen is a substance that interferes with normal fetal development and causes congenital disabilities. Drugs, alcohol, chemicals and toxic substances are examples of teratogens.

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Answer:

Molecule

Explanation:

A molecule is the smallest particle of an element or compound that can exist independently.

Answer:Homeostasis

Explanation: homeostasis maintains balance in the body inside the body, even if there are changing external conditions. Hope this helped =)

Earth's crust an increased presence of greenhouse gases in the atmosphere. So, correct option is D.

The Great Acceleration refers to a period of rapidly increasing human impacts on the Earth's systems, including the biosphere, atmosphere, oceans, and geosphere. It began in the mid-20th century and has accelerated since then, resulting in significant changes to the natural systems of the planet. Some of the key drivers of the Great Acceleration include population growth, technological innovations, economic development, globalization, and resource consumption.

These changes have resulted in a range of impacts, such as increased greenhouse gas emissions, loss of biodiversity, deforestation, and pollution of air, water, and soil. The Great Acceleration has also led to the creation of a so-called "technosphere," a term used to describe the rapidly growing interconnected network of technological systems that humans have created to support our rapidly growing population and demand for resources.

The Great Acceleration is widely seen as a major challenge to global sustainability, as it is putting significant pressure on the Earth's systems and threatening the long-term health and stability of the planet. It is a crucial issue for policymakers and the global community, who must work together to find sustainable solutions to these challenges and ensure that the Earth's systems are protected for future generations.

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The boundaries of the ecosystem shown in the diagram represents a body of water in the outer region.

This consists of all the organisms and the physical environment with which they interact and are made up of the biotic and abiotic factors.

Boundary of an ecosystem complex of living organisms in areas where one body of water meets another or where one terrestrial ecosystem meets another and in this case it is the body of water which have fishes and other aquatic organisms present.

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Answer:

Answer Below ↓

Explanation:

A glaze is made up of three parts. A flux/melter that lowers the melting point, a refractory/stabilizer that bonds the glaze to the clay, and a glass former like silica. This creates the base and then a stain is added to give the glaze its color. It's a bit like mixing paint and a bit more like a chemistry experiment.

Answer:The electrons are thought to exist in SHELLS/LAYERS around the nucleus of an atom and that there can be no more than TWO IN THE FIRST SHELL WHEREAS THE SECOND AND THIRD CAN HOLD UPTO EIGHT electrons on them

Explanation: The electrons are around a nucleus in shells/layers.There are three shells around it the first shell has a maximum of two electrons  whereas the second and third can hold a maximum of 8 electrons    

Answer: homeostasis

Explanation: homeostasis is body regulation

In an amusement park ribosomes would be the machine that generates popcorn in the sense they serve to produce proteins for the cells.

The relative role of ribosomes in the cell is associated with the synthesis of proteins in the cytoplasm which may have structural and or enzymatic catalytic roles.

Therefore, with this data, we can see the relative role of ribosomes in the cell must be associated with the production of proteins required to carry out metabolic activities in the cell.

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Answer:

To conduct an investigation on the effect of organic materials and fertilizers on soil texture, you can follow these steps:

Define the independent and dependent variables:

Independent variable: type of organic material or fertilizer used (e.g. compost, manure, chemical fertilizer)

Dependent variable: soil texture (e.g. water-holding capacity, porosity, bulk density)

Design the experiment:

Choose a representative soil sample and divide it into several equal portions.

Treat each portion with a different organic material or fertilizer.

Control for extraneous variables by maintaining consistent environmental conditions (e.g. temperature, moisture levels) for each soil sample.

Collect and analyze data:

Measure the dependent variable (soil texture) for each soil sample after a set period of time (e.g. after 2 weeks).

Compare the soil texture of the treated samples to the control (untreated) sample.

Use statistical analysis to determine if any significant differences exist between the treatments and the control.

Draw conclusions:

Based on the results of the data analysis, draw conclusions about the effect of different organic materials and fertilizers on soil texture.

Determine if there are any significant differences in soil texture between the treatments and the control.

To conduct the investigation:

An experiment is a technique used to confirm or deny a hypothesis, as well as assess the likelihood or effectiveness of something that has never been tried before.

Experiments show the relationship between the independent and dependent variables.

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Answer:

This is because the new bonds help to stabilize the atom.

Explanation:

Many atoms become stable when their valence shell is filled with electrons or when they satisfy the octet rule (by having eight valence electrons).

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The function of lipids that are essential to living organisms include:

The correct options are A, C, and E.

Lipids are biomolecules that are characterized by their insolubility in water.

Natural compounds known as lipids include fats, waxes, sterols, fat-soluble vitamins, monoglycerides, diglycerides, phospholipids, and others. Lipids serve as structural elements of plasma membranes, energy stores, and signaling molecules.

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Answer:

50%

Explanation:

The inheritance of color blindness is determined by a gene located on the X chromosome. Males have only one X chromosome (XY), so they are more likely to inherit the condition if the gene for color blindness is present on their X chromosome.

If a male has the gene for color blindness, all of his offspring will be non-colorblind females (since females have two X chromosomes, one from each parent, and only one copy of the gene for color blindness is required for normal color vision). If a non-colorblind female (who has the normal version of the gene on one X chromosome and a non-functional version on the other) marries a colorblind male, approximately half of their male offspring will be colorblind and half will be non-colorblind.

Therefore, the percentage of their offspring that will be non-colorblind males would be 50%.

Answer: Microevolution is simply a change in gene frequency within a population. Evolution at this scale can be observed over short periods of time — for example, between one generation and the next, the frequency of a gene for brown coloration in a population of beetles increases. Such a change might come about because natural selection favored the gene, because the population received new immigrants carrying the gene, because of mutation, or because of random genetic drift from one generation to the next.

House sparrows were introduced to North America in 1852. Since that time, the sparrows have evolved different characteristics in different locations. Sparrow populations in the north are larger-bodied than sparrow populations in the south. This divergence in populations is probably at least partly a result of natural selection: larger-bodied birds can often survive lower temperatures than smaller-bodied birds can. Colder weather in the north probably selects for larger-bodied birds.