Answer:
lemon juice
Explanation:
Acids prevent browning because they react with the oxygen that comes into contact with the surface of the sample. Once all the acid (or whatever else is covering the surface) has reacted with the oxygen or the acid has degraded or washed off, then the sample will start to brown again. Stronger acids, like lemon juice, can even denature the enzyme. This means that the enzyme can no longer perform its original function because of its environment.
Carbon is considered a building block of life and is very useful as a chemical because it is able to make very complicated compounds. This is because it is able to bond with up to __ other molecules.
a. one
b. two
c. three
d. four
Answer:
d. four
Explanation:
Carbon can form maximum of four bonds to other atoms due to its electronic configuration and valence electron counts).
1. What are alleles?
genes that always hide their traits, which are never exhibited
pieces of genes that are observable to the human eye
gene pieces found at certain sites on a chromosome
genes that always show their traits, which are never hidden
Answer:
c
Explanation:
a and d are definetly not ir
The picture below shows four locations on the map of Australia.
Which of these locations is most likely to experience moderate climate throughout the year? FLVS
Location A
Location B
Location C
Location D
I choose answer b on this map
symbiosis and species interactions keystone webquest answer key
These exchanges are frequently brief. However, there are many instances where two species coexist peacefully for extended periods of time.
What is keystone species?The most numerous species in a community are known as dominant species, and they have a significant impact on the abundance and distribution of other species.
Keystone species, on the other hand, have an impact on communities that greatly outweigh their abundance.
These discussions are typically can be done in many way. Two species can, however, frequently cohabit happily for long periods of time.
Such relationships are known as symbioses ("living together"). Symbiotic relationships can be classified as parasitic, commensal, or mutualistic.
Thus, this can be symbiosis and species interactions.
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What types of light are reflected by plant leaves?
Plant leaves reflect visible light, and the specific colors of light that are reflected depend on the pigments present in the leaf. Chlorophyll, the pigment primarily responsible for the green color of leaves.
Reflects green light, while absorbing other colors of the visible spectrum such as blue and red. Carotenoids, which are pigments that give leaves their yellow and orange colors, reflect yellow and orange light. And finally, anthocyanins which are pigments that give leaves their red color, reflects red light. Additionally to these pigments, other substances on the leaf surface can also affect the light reflection. It's worth noting that while leaves reflect visible light, they also reflect other type of light such as near-infrared and ultraviolet, but these are not visible to the human eye, however they are important for the plant growth and health.
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Buffalo grass is a species of plant found on the grazing prairie of Wyoming. It is a tough grass that has silicates (compounds containing oxygen and silicon) that reinforce its leaves. This variation has allowed this type of grass to survive for many years in an adverse environment. This is an example of which mechanism of evolution? O Mutation O Natural Selection O Gene Flow Genetic Drift
As the variation of tough grass that has silicates (compounds containing oxygen and silicon) that reinforce its leaves has allowed this type of grass to survive for many years in an adverse environment, this is an example of b. natural selection.
This particular type of grass has adapted over time to survive in an adverse environment, due to its silicates (compounds containing oxygen and silicon) reinforcing its leaves. This is an example of natural selection, showing how the grass has been able to survive for many years despite the difficult conditions.
The variety of grass characterized by silicates (oxygen and silicon compounds) in its leaves has enabled it to survive in difficult environments over the years. This is a prime example of natural selection at work.
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Which living thing is a typical marsh inhabitant? O A. Sea star O B. Octopus O C. Alligator O D. Peat
Option C is Correct. Alligator marsh is a kind of wetland where herbaceous plants thrive.
These can be discovered close to the shores of lakes or any other body of water. A marsh is a zone where the aquatic and terrestrial ecosystems meet. Rushes, reeds, and grasses are the predominant flora in wetlands.
Alligators are a type of amphibian that is related to crocodiles. These inhabit freshwater and brackish environments. These amphibians complete their life cycle in environments on land and in water. They favor environments like marshes, lakes, swamps, ponds, and rivers as their home. Alligators may survive in the marsh ecosystem thanks to the muddy terrestrial habitat and freshwater.
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A field of many different wildflowers would ve considered a(n)
1. Community
2. Population
3. Ecosystem
4. Niche
A field of many different wildflowers considered as a community.
In the field of biology, the term "community" refers to a group of different species that live in close proximity to one another and interact with one another. Since a field of varied wildflowers is home to more than one species that coexist in the same region, we may refer to it as a community.
A population is defined as all of the creatures of the same species that are found in the same location at the same time; whereas an ecosystem is defined as all of the living and non-living components that make up an area; on the other side, the function that an organism fulfills within its community is referred to as its "niche."
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What is the end result when one human cell 46 DNA molecules divides by mitosis?
when one human cell 46 DNA molecules divides by mitosis, the cell then splits in two by a process called cytokinesis, creating two clones of the original cell, each with 46 monovalent chromosomes.
What is Mitosis?
Mitosis is a type of cell division in which a cell (mother cell) divides to produce two new cells of her (daughter cells) that are genetically identical to itself. In the context of the cell cycle, mitosis is the part of the mitotic process in which the DNA in the cell's nucleus is divided into her two equal sets of chromosomes.
The purpose of mitosis is to form more diploid cells. It works by copying each chromosome and spreading the copies out on different sides of the cell.
Mitosis is required for growth, repair, and asexual reproduction. It plays an important role in the development of organisms. In unicellular organisms, mitosis is thought to be the process of asexual reproduction.
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Suppose you want to produce a plant cultivar that has red flowers and speckled leaves. You have 2 cultivars, each having 1 of the desired traits. How would you proceed?
In desired traits, by breeding these two types of plants we will get a hybrid plant with the desired traits: red flowers and speckled leaves.
What do you mean by traits?A trait is a specific characteristic of an individual. Traits can be determined by genes, environmental factors or by a combination of both. Traits can be qualitative or quantitative.
Genes carry the information that determines your traits (say: trates), which are features or characteristics that are passed on to you — or inherited — from your parents. Each cell in the human body contains about 25,000 to 35,000 genes.
Biological traits describe species' physiology, morphology, life history, and behavior, capturing both inter-specific interactions and the connections between species and their environment.
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Why are most point mutations harmless?
Most point mutations are harmless because the majority of the genetic code is non-coding, meaning that it does not contain instructions for making proteins.
Point mutations that occur in non-coding regions of the DNA will not affect the function of the proteins that are produced, and therefore, will not cause any harm.
Additionally, point mutations that occur in coding regions can sometimes result in a change in the amino acid sequence of a protein, but the change may not be significant enough to alter the protein's function. For example, a point mutation that changes one amino acid in a protein's sequence may not disrupt the protein's structure or function. This is known as a silent mutation.
Furthermore, some point mutations can even be beneficial by providing a selective advantage. For example, a point mutation that changes a codon for an amino acid to one that codes for a different amino acid but still allows the protein to function properly.
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The B vitamins play major roles in ____. Question 45 options: maintaining skin health and decreasing oxidative damage to skin cells decreasing free radicals and increasing epinephrine from the brain facilitating energy production and making red blood cells increasing fatty acid mobilization from adipose tissue and serving as neurotransmitters
The B vitamins play major roles in increasing fatty acid mobilization from adipose tissue and serving as neurotransmitters.
The B nutrients assist enzymes in our our bodies do their jobs and are vital for a huge variety of mobile functions, like breaking down carbohydrates and transporting vitamins at some point of the body. The B nutrients play an inter-associated function in maintaining our brains jogging properly. Perhaps the maximum famous of all of the B nutrients, B12 is essential for neurological feature, DNA production, and crimson blood cellular improvement. Vitamin B12 is wanted to shape crimson blood cells and DNA. It is likewise a key participant withinside the feature and improvement of mind and nerve cells. Vitamin B12 binds to the protein withinside the ingredients we eat.
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Controlled variable to the science experiment, “are fingerprints inherited?”
The controlled variable to the science experiment 'are fingerprints inherited' may include the use of molecular markers of known molecular size.
What is a controlled variable in a science experiment?A controlled variable in a science experiment is any condition that remains constant along the experiment and thus serves to make comparisons with the target experimental groups such as in this case the use of samples of individuals containing molecular markers of known molecular size, which allow us to identify the alleles of polymorphism in the sample after electrophoresis agarose gel and visualization under UV light.
Therefore, with this data, we can see that a controlled variable in a science experiment is any condition that stays the same in the experiment, and therefore it can be used to determine the presence or absence of a given allele in a DNA fingerprint.
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Please help me with this!!
Genetic makeup is the combination of genes that make up an individual's unique genetic code.
1.The physical appearance of an individual's genetic makeup phenotype.
2. A particular characteristic of an individual trait.
3. The passage of genetic instructions from one generation to the next generation genotype.
4. One variation of a particular gene allele.
5. The specific genetic makeup of an individual chromosomes.
6. Contain the genes of an individual heritability.
What are Chromosomes?
Chromosomes are thread-like structures composed of DNA and proteins that carry genetic information. In most living organisms, each cell contains a pair of chromosomes, one inherited from each parent. Humans have 23 pairs of chromosomes in each cell, for a total of 46. Chromosomes are responsible for determining an organism's traits, from eye color to blood type.
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Where is most ATP produced in mitochondria?
Most ATP is produced in the mitochondrial matrix, which is the fluid-filled space inside the inner membrane of the mitochondria.
The process of ATP production in the mitochondria is called cellular respiration. It starts with the breakdown of glucose and other molecules in the cytoplasm by the process of glycolysis, which generates a small amount of ATP. The majority of the ATP is generated in the Mitochondria during the process of oxidative phosphorylation, where the electrons from the breakdown of glucose are passed through a series of protein complexes in the inner mitochondrial membrane, which generates a proton gradient that drives the production of ATP via ATP synthase.
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What is a point DNA mutation?
A genetic mutation brought on by the replacement of one nucleotide with another nucleotide is called a point DNA mutation.
A mutation is a change to an organism's DNA sequence. Errors in DNA replication during cell division, exposure to mutagens, or viral infection can all cause mutations. Somatic mutations (which happen in body cells) cannot be passed on to offspring, whereas germline mutations (which happen in eggs and sperm) can.
Point mutations involve the substitution, deletion, or insertion of a single nitrogenous nucleotide into a single base pair of DNA. The sickle cell anemia condition is a case of a point mutation. The beta-globin chain of the blood's hemoglobin pigment is affected by a single base pair mutation.
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What five characteristics of a rock would make it a mineral?
Hardness.
Luster.
Color.
Streak.
Specific Gravity.
Insects often get stuck in the sap of ancient trees. The sap along with the insect inside harden forming a fossil. What kind of fossil is this
You are correct in your assumption. The kind of fossil that has been described in the question is Crystallization. It is also called crystallized fossil. The correct option is B ,
The solidification of a liquid material into a highly structured solid whose atoms or molecules are arranged in a well-defined three-dimensional crystal lattice is known as crystallization. A unit cell is the smallest individual portion of a crystal. Millions of similar unit cells make up the crystal.
Crystallization is the process of separating solid substances in the form of crystals from a solution. This procedure is most commonly used to separate a pure solid from a solution. It is a bodily transformation.
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Full Question ;
Insects often get stuck in the sap of ancient trees. The sap along with the insect inside harden forming a fossil. What kind of fossil is this?
A Cast
B Crystallization------What I think it is.
C Mold
D Trace
What are two variations of fur color in cats?
There are two basic colors of cats, black and red. These are called “dominant” colors. The color of all cats relates to these two colors in some way, by changing the color or covering it up. There is also a “dilute” of each color.
Generally, the colours, which can be termed differently depending on the breed, are: white, red, blue, black, cream, cinnamon, fawn and brown. The colour of a cat depends completely on genetics. The two primary colours in cats are black and red. There are six varieties of cat fur patterns. These are Tabby, Solid, Bicolor, Tricolor, Tortoiseshell, and Colorpoint.
A cat displaying a dominant color (black, red, tortie, etc.) must have a parent which displays a dominant color. Two recessive color parents (cream, blue, etc.) cannot produce an offspring of a dominant color (black, red, etc.).
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Raul has scraped his knee and noticed that after a week it had almost completely healed. Raul wondered how the skin was able to repair itself while looking exactly the same as his non-injured skin. In 3-5 sentences explain how mitosis plays a role in healing skin after injury and is able to maintain the look of the existing, non-injured skin.
Cells are created via cell department. And mitosis is an vital a part of this process. Mitosis creates equal copies of cells.
For example, it creates new pores and skin cells to update lifeless pores and skin cells. Interphase has 3 stages: G1, S and G2. During the G1 stage, the cell prepares for department via way of means of growing its mass. During the S stage, the cell synthesizes greater DNA. And at some point of the G2 stage, the cell synthesizes proteins because it keeps to grow. Before it is able to divide, a cell additionally wishes to have its lengthy uncoiled strands of DNA condensed into chromosomes. Otherwise, cell department might be like looking to break up a plate of spaghetti in half. Chromosomes are manufactured from bundles of DNA and protein. This makes them a lot simpler to transport around.
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The passage describes current research on the implications of histone methylation in plants.
Based on the information in the passage, what testable scientific question could be asked about the influence of chromosome structure on an organism's traits?
A.
How does histone methylation prevent organism growth and cell division during periods of heat stress?
B.
Is histone methylation the best way for plants to increase their expression of heat shock proteins?
C.
Will histone modifications permanently upregulate heat shock protein expression after heat stress exposure?
D.
Can histone modifications that prime a plant to survive heat stress be transmitted from parents to offspring?
Histones include a variety of basic residues that can be methylated, and the results of this methylation depend on the type of basic residue, where it is methylated, and where it is located.
What is Histone Methylation?Specific enzymes have the ability to add or remove methyl marks during the dynamic process of histone methylation. In order to influence phenotypic outcomes, other proteins can identify and bind methylated residues.
By way of DNA sequence, non-coding RNA, DNA methylation, or other post-translational signals on histone tails, histone-modifying enzymes might be attracted to particular loci.
In some cases, histone methylation can be passed down from parents to offspring and can be either dynamic or stable throughout a cell's life, including during mitosis and meiosis.
Therefore, Histones include a variety of basic residues that can be methylated, and the results of this methylation depend on the type of basic residue, where it is methylated, and where it is located.
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All of the following are common to both the Gram stain and the acid-fast stain EXCEPT A) primary stain. B) counterstain. C) a decolorizing agent. D) a chemical mordant. E) a decolorizing agent and a counterstain.
D) A chemical mordant, the Gram stain, and the acid-fast stain. Iodine is the reagent that is used as a mordant during gram staining.
What is the acid-fast staining mordant?HEAT is used as a mordant in the Acid-Fast stain to help Carbol Fuschin bind to peptidoglycan more strongly. THE DECOLORIZATION STEP is step number four. Acid alcohol is used to "decolorize" the cells in the Acid-Fast stain.
What chemical acts as a mordant in the Gram stain?Iodine from Grams The mordant is from Grams. This forms a substantial complex that binds to crystal violet and clings to the cell membrane. After 30 seconds of Gram's iodine sitting, 95% ethanol decolorizer is added.
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A sea otter is considered very important in
maintaining his ecosystem and food web.
Changes with him will affect the ecosystem
dramatically. A species such as this is called
a(n).
A. keystone species
B. VIP
C. ecosystem king
Which of the following is not detected by chemoreceptors in the carotid and aortic bodies? Multiple Choice a. Oxygen b. Blood pressure c.pH d.Carbon dioxide e.Oxygen and carbon dioxide
How do you introduce energy conservation?
Energy cannot be created or destroyed; it can only be changed from one form to another, according to the rule of conservation of energy.
An isolated system's total energy is constant over time in accordance with the rule of conservation of energy. The law of energy conservation applies to all kinds of energy.
Most importantly, energy conservation can be accomplished by either using less energy or by using fewer services. First of all, conserving energy is crucial for preserving non-renewable energy sources. Additionally, the regeneration process for non-renewable energy sources takes centuries.
In the planning and construction of buildings, energy conservation is crucial. Since the 1970s, its prominence has grown. Concern about the implications of climate change has recently energy conservation is crucial, as concern over climate change and global warming has highlighted.
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Reasons that the population size of an exotic species often grows rapidly when the species is introduced in a new environment include which of the following?
I. The exotic species is resistant to pesticides.
II. There is a large, underutilized food source in the new environment.
III. The exotic species has few natural predators in the new environment.
(A) I only
(B) II only
(C) I and III only
(D) II and III only
(E) I, II, and III
Reasons that the population size of an exotic species often grows rapidly when the species is introduced in a new environment include II) there is a large, underutilized food source in the new environment, III) the exotic species has few natural predators in the new environment. Hence, option D is correct.
The introduction of an exotic species into a new environment can often cause a rapid population growth due to several key factors.
One of these is that there tends to be a large, underutilized food source in the new environment which the exotic species can take advantage of. Another factor is that the exotic species may have few natural predators in the new environment, allowing them to thrive without fear of predation.
As a result, these two factors can lead to a rapid population growth of an exotic species when it is introduced into a new environment.
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Needs help ASAP
Which of the following is an example of genetic engineering?
A. A string of three bases within an RNA molecule codes for a specific amino acid
B. A string of amino acids bonds together to form a protein that controls a trait
C. A bacterial cell produces human insulin because human DNA has been added to the bacterial DNA
D. And the nucleus of a human cell DNA strands separate and are used as a template for new RNA molecules
A bacterial cell produces human insulin because human DNA has been added to the bacterial DNA is an example of genetic engineering.
What do you mean by genetic engineering?Genetic engineering, also called genetic modification or genetic manipulation, is the modification and manipulation of an organism's genes using technology.
For example, genetic engineering may involve adding a gene from one species to an organism from a different species to produce a desired trait. Used in research and industry, genetic engineering has been applied to the production of cancer therapies.
Genetic engineering is accomplished in three basic steps. These are (1) The isolation of DNA fragments from a donor organism; (2) The insertion of an isolated donor DNA fragment into a vector genome and (3) The growth of a recombinant vector in an appropriate host.
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How the respiratory system and circulatory system work together to supply the body with oxygen and to remove waste from the body?
Together, the circulatory and respiratory systems assist eliminate waste carbon dioxide from the tissues and deliver oxygen to the tissue.
The respiratory system is the one that helps to inhale oxygen and exhale carbon dioxide. And the circulatory system is the system that helps to supply oxygen from the lungs to tissues and helps to remove carbon dioxide from the tissue via the lungs. Both these process helps to supply oxygen in this way and helps to remove carbon dioxide as a waste.
First, the oxygen inhaled will be transported to the lungs and this oxygen will be exchanged with the blood that brings the waste (CO₂) from the tissue via the heart. Then, the oxygen will be transported to the heart from where the oxygenated blood will be supplied to the tissues. And the waste from the tissue will be carried via deoxygenated blood.
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1. Which organisms are primary producers in this food web? How do you know?
2. Which organisms are primary consumers in this food web? How do you know?
3. Which organisms are apex predators in this food web? How do you know?
4. Are there any omnivores in this food web? How do you know?
Answer:
corals is the primary producers.planktonsharkWhat is the genetic basis behind the appearance and gender of calico cats?
The gene for "orange or black coat" is on the X chromosome, so if "orange" and "black" are active in different cells, female cats can have both colors of calico cat's coat. Yes, because male cats only have one X. The chromosome is her only one of these colors.
The calico, or more specifically tortoiseshell, pattern of cats is observed in female (or rarely male XXY) cats with different alleles at the coat color locus on the X chromosome. One of the X chromosomes carries alleles for black fur pigment and the other for orange fur pigment. Random inactivation of one of the X chromosomes causes orange and black spots on the cat's coat. Males with a single X chromosome have either orange or black fur, depending on which allele they possess. Calico cats have large white spots along with orange or black spots on their fur due to an autosomal gene that causes white spots.
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