What Macromolecules are found in cheese

Answer:

The correct options are:

B) Species can dwindle to extinction due to inbreeding.

D) Species can dwindle to extinction because people can eliminate them.

E) Species can dwindle to extinction due to loss of genetic variation.

Explanation:

Inbreeding reduces the fitness of a population of species, lowers variation of genes which leads to depression and as such gradual inability to survive.

Human activities have also been known to contribute to the erosion of species. Data suggests that approximately thirty-thousand may be at risk as a result of the activity of the human race.

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Enzymes are said to be specific because an enzyme binds to only one or one group of substrates for its activity.

The enzyme's specificity is a property that indicates how restricted the enzyme is in its substrate selection; There would only be one substrate for a completely unique enzyme. Specificity is the capacity of an enzyme to select a specific substrate from a variety of chemically similar compounds. Specificity is a molecular identification process due to the complementary structural and conformational properties of the enzyme and substrate. Since the specific substrate must fit into the enzyme's active site before catalysis can take place, only well-designed molecules can be enzyme substrates; An enzyme will frequently react with a single naturally occurring molecule or substrate.

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Answer:

pictures of different ecosystems

Explanation:

i got it right

Answer:

C. Neither taking vitamin C nor the immune system response

Explanation:

A control variable, also known as a constant variable, is a factor in an experiment that is intentionally kept consistent and unchanged throughout the study. Its purpose is to provide a baseline for comparison, ensuring that any observed effects can be attributed to the manipulated variable.

In the given scenario, the control variable would be a factor that remains constant and unaffected by the study. Among the options provided, option C. Neither taking vitamin C nor the immune system response is the control variable because it represents a scenario where neither the intake of vitamin C nor the immune system response is manipulated or changed.

The correct answer is feather

Feathers perform a number of functions for a bird:

1) Insulation: body temperature is mantained thanks to them

2) Allows them to fly. Specialized feathers are anchored to bone with strong ligaments so they can withstand the demands of flight and be precisely positioned.

Sago palms or Cycas revoluta is gymnosperms because they reproduces through an exposed ovule or seed.

In gymnosperm Pollen from male cones blows up into upper branches, where it fertilizes female cones.  Cycas revoluta is a cycad, not an actual palm. Pollination in gymnosperms involves pollen transfer from the male cone to the female cone. during transfer, the pollen develops to form the pollen tube and the sperm for fertilizing the egg.

In gymnosperm ovaries are absent, double fertilization does not take place, As male and female gametophytes are present on cones rather than flowers, and wind is the main source pollination.

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Answer:A

Explanation:

The osmotic pressure in the animal cell is higher than that in the fresh water.

The flow of water is from low osmotic pressure to high osmotic pressure.

The water moves into the cell and then bursts.

Answer:

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Answer:

A dromedary is an animal that can travel for many days without drinking water. You would expect to find the dromedary in a (C) : Desert Biome.

B: Desert biome. Desert usually don't have a lot of water resources, so it would make sense for animals there to be able to adapt to it.

The options that correctly describes the effects of the different types of mutations are:

(a) Missense mutation results from the substitution of one base, changing an amino acid to another amino acid, possibly affecting protein function. The effects of this mutation can be positive, negative, or neutral.

(b)  Frameshift mutation results from the deletion or insertion of a base or bases, resulting in a change to the amino acid sequence following the mutation. The results of this type of mutation often depend on the location in the sequence where it occurs.

(c)  Nonsense mutation changes an amino acid to a STOP codon, resulting in a change to the sequence the amino acid chain.

A mutation is a DNA sequence change in an organism that occurs due to some mistakes when the DNA was being copied, being exposed to radiations or other factors of the environment.

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The statements that correctly describes the effects of the different types of mutations are as follows;

Mutation is any alterations or changes to the genetic sequence of DNA.

According to this question, mutations can be classified by their effect on the DNA sequence or the resulting protein. These classification is as follows;

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Some of the aspects that help you determine whether a study is rigorous are questions and hypotheses that can be answered, adequated method use, and bibliography.

Rigorous is a term that refers to a quality that focuses on accuracy and precision to comply with norms, precepts, and pre-established rules. This term is widely used in science to refer to the precision of a study or investigation.

Therefore, when it is established that a study is rigorous, its attributes must be taken into account, such as:

- Questions and hypotheses that can be answered: This aspect refers to the investigator having the ability to limit his study so that it is appropriate to do so and does not include too much information that makes his study "impossible".

- Adequated methods use: This refers to using the appropriate methods to reach feasible conclusions, for example, methods of observation, deduction, induction, among others.

- Bibliography: This refers to the research or study being supported by reliable sources so that it is as accurate as the information it provides.

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Answer:

1) Weathering, Erosion, Disposition

2) Physical weathering is the breakdown of large rocks into fragments by physical forces; the chemical composition of the rock is not changed. Chemical weathering is the breakdown of rock by chemical reactions; the chemical composition is changed.

3) The four forces of erosion are water, wind, gravity, and glaciers.

4) Because the velocity of the river slows down a great deal when it reaches the large body of water, the sediment that the river was carrying is deposited along the mouth of the large body of water.

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Abrasion: Abrasion is the breaking down and wearing away of rock material by the mechanical action of another rock. Three agents of physical weathering that cause abrasion are moving water, wind, and gravity. Also, rocks suspended in thence of a glacier can cause abrasion of other rocks on Earth's surface. This would be a prime example of physical weathering, or mechanical weathering.

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Acid Precipitation: Acid rain causes less erosion than normal rainwater does. Rainwater can break down rocks by dissolving minerals in the rocks. Acid rain is rainwater that is more acidic than normal rainwater. Acid rain can also dissolve the minerals in rocks faster than normal rainwater can. This is chemical weathering.

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Animal actions: Animal and plant mobility is a factor in biological weathering. For instance, a plant may grow in a gap in a rock and, as its roots spread, cause the fracture to expand. A rabbit may also burrow into a crack in a rock, making it wider and eventually separating the rock. This is an example of physical weathering.

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Ice wedging: Ice wedging ,sometimes known as frost wedging ,can also cause rocks to break apart. Ice wedging causes cracks in rocks to expand as water seeps in and the water freezes and expands opening the crack further. Rocks formed under pressure deep within earth can become exposed at the surface. This is physical weathering

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Oxidation: Oxidation is another kind of chemical weathering. It occurs when oxygen from air dissolves in water and combines with chemicals in the rocks to form oxides. if the rock contains a lot of iron, then oxidation produces a brown material called iron oxide. This looks like rust on the rock.

Weathering is the chemical and mechanical breakdown of exposed rock. The chemical changes alter the minerals and make them softer, and mechanical weathering physically breaks rock into smaller and smaller pieces.

Erosion is the REMOVAL of those chemically and mechanically softer and broken pieces of rock from their original locations, by gravity, water, ice or wind. Erosion is transport (and as a result, fresh unaltered rock is exposed to wind, water and weather, and THAT becomes weathered in turn). The material being transported is ‘sediment’: sand, silt, mud and gravel.

Deposition is when the weathered and eroded (transported) material is dropped and settles down elsewhere, forming a ‘deposit’ of transported rock material.

If this deposit remains undisturbed long enough, and is buried by enough arriving material, it will eventually go through compaction and chemical reactions forming cement between the grains - thus resulting in a brand new, sedimentary rock.

Weathering, erosion, transport, deposition, compaction and cementation are part of the ‘rock cycle’.

Let’s start with basalt that form at mid ocean spreading centers. At mid ocean spreading centers rock material from the earth’s mantle continuously melts due to continuous decreasing in pressure from the oceanic crust spreading at this point. The molten rock quickly cools at the earth’s surface and forms rock known as basalt that makes up the oceanic crust all over the world. The newly produced oceanic crust rock slowly moves towards a boundary with a continental crust where the oceanic crust subducts beneath the continental crust due to the oceanic crust having a higher density than the continental crust. This is where things get a bit more interesting.

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Glucose provides plants with needed food through a process called photosynthesis. This process helps plants convert the energy they take in from sunlight into sugar to help nourish the plant. Photosynthesis occurs when carbon dioxide, water and sunlight are combined. Plants use these to form glucose and oxygen.

Answer:

N-ribose

Explanation:

A new hormone, hormone X, is found to regulate the blood concentration of hormone Y via a negative feedback loop. When blood concentrations of hormone Y increase, hormone X secretions will decrease due to the negative feedback. In this case option A is correct.

Hormones are chemical messengers that influence and control countless bodily functions. A body process frequently involves a cascade of several different hormones.

Only when a hormone "fits," or when the cells in the target tissue have receptors that can pick up the hormone's message, will that hormone have an effect on that area of your body. Consider a hormone to be a lock, and the cells of its target tissue, such as an organ or fat tissue, to be a key. It will function if the hormone binds to the lock (receptor) on the cell wall; this will send a message to the target site instructing it to perform a particular action.

Hormones are used by your body for two different types of communication.

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For an organism that has 18 chromosomes in its body cells and its sex cells have 9 chromosomes, the correct statement is C, Its sex cells are haploid and a result of meiosis.

Haploid cells have half the number of chromosomes as diploid cells. Mitosis is a type of cell division that produces two identical daughter cells. Meiosis is a type of cell division that produces four daughter cells, each with half the number of chromosomes as the parent cell.

In the organism described, the body cells are diploid (18 chromosomes) and the sex cells are haploid (9 chromosomes). This is because the sex cells are produced by meiosis, which is a type of cell division that reduces the number of chromosomes by half. This allows the sex cells to combine with each other to form a new diploid cell, which is the beginning of a new organism.

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Complete question:

An organism has 18 chromosomes in its body cells. Its sex cells have 9 chromosomes.

Which statement correctly explains this?

Its body cells are haploid and a result of mitosis.

Its sex cells are diploid and a result of mitosis.

Its sex cells are haploid and a result of meiosis.

Its body cells are diploid and a result of meiosis.

Thermoregulation. The integumentary system keeps body temperature within limits even when environmental temperature varies; this is called thermoregulation.

Answer:

I believe replication would not be possible, therefore the DNA would cease to help recreate cells which are essential to the human body.

Explanation:

This question by far is highly interesting, in fact it is very controversial too. However, with the sudden beginning of an actual hydrogen bond forming within nitrogenous bases, then replication would not be possible. This is so because replication relies only on nitrogenous bases rather than hydrogenous bonds. Therefore, resulting in a possible defect in the process of replicating to occur. However, if possible, I believe there might be even a chance of a mutation to occur, yet that is highly rare given the stance that the DNA molecule would not be able to pretty much do anything if that were to occur.

They became extinct, so they did not exist when the younger rock layers formed. Option D.

The most likely scenario based on the information provided is that the organisms that became fossilized in older rock layers became extinct, and therefore, they did not exist when the younger rock layers formed.

Fossils are the preserved remains or traces of organisms from the past, and they provide valuable insights into the history of life on Earth. The distribution of fossils in rock layers follows the principle of superposition, which states that younger rock layers are deposited on top of older ones.

This implies that the fossils found in older rock layers represent organisms that lived in the past and were preserved through the fossilization process.

If the older rock layers contain fossils of many kinds of organisms that are not found in younger rock layers, it suggests that those organisms no longer existed by the time the younger rock layers formed. The absence of their fossils in younger layers indicates that either the organisms became extinct or their populations shifted to different habitats or regions where their remains were not preserved as fossils.

This phenomenon aligns with the concept of extinction, which is the complete disappearance of a species or a group of organisms. Extinction can occur due to various factors such as environmental changes, competition, predation, or other selective pressures.

Organisms that became extinct would not be present in subsequent rock layers because they were no longer alive or did not have a viable population to leave behind fossil remains.

Therefore, the most reasonable explanation is that the organisms that became fossilized in older rock layers became extinct, and this is why they are not found in younger rock layers. SO Option D is correct.

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Answer:

Explanation:

the Golgi apparatus is involved in the processing of :

salivary amylase

this is because the GC is involved in the secretion of proteins and salivary amylase is protein secreted from the salivary glands

Answer:

To collect data about a single body of water over time in a table format, you can create a table with the following headings: Date, Time, pH, Temperature, Turbidity, and Dissolved Oxygen.

Under the pH, Temperature, and Turbidity columns, you can cite the means for each of these measures over time. For example, you can calculate the mean pH, temperature, and turbidity for each month or year, depending on how often you are collecting data.

For dissolved oxygen data, you can cite the area of the "dead zone" where dissolved oxygen levels are below 2 mg/L. You can indicate the size of the dead zone and the location where it was observed.

By creating a table with these headings and including the means for pH, temperature, and turbidity, as well as the area of the "dead zone" for dissolved oxygen data, you can track changes in water quality over time and identify trends that may require further analysis.

Hope this helped :)

Answer:

I don't have access to the Water Quality Testing activity or the tables you need to complete. Can you please provide more details or share the relevant documents or links so I can assist you better?

Explanation:

Answer:

they both involve the attraction between opposite charges.

Explanation:

no explanation

Im answering here to not only agree to the other person answering before me. I am also here to allow you to post brainliest for the other guy

Answer:

Test crosses are used in selective breeding because they can determine the genotype of the parent.

Explanation:

Also, I see it it ur first question. Welcome to Brainly!

Answer: You cut off the answers-

Explanation:

Bacteria were infected with bacteriophages and it was found that it is DNA which is transferred from bacteriophage to bacteria and DNA is the genetic material of the cell.

From the year 1951 to 1952, Hershey and Chase conducted a series of experiments to find the role of DNA in the genetic heritability of traits in an organism. The Hershey and Chase experiments were performed using bacteriophages, or viruses that are capable of infecting bacteria, in order to determine whether the genes were made of proteins or DNA.

Since, phosphorus is present in DNA but not in the amino acids, radioactive phosphorus-32 was used to label the DNA in the T2 phage. And, radioactive sulfur-35 was used to label the protein sections of the T2 phage, because sulfur is present in the protein but not DNA.

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The genotypes of the parents would be:

Parent 1: AA

Parent 2: AO

To determine the genotypes of the parents in this scenario, we can use the information about the blood types of their children and the inheritance patterns of blood types.

From the given information:

Child 1: Type A blood (genotype could be AA or AO)

Child 2: Type O blood (genotype must be OO)

Child 3: Type AB blood (genotype must be AB)

Child 4: Type B blood (genotype could be BB or BO)

Based on this, we can deduce the genotypes of the parents as follows:

Since child 1 has type A blood, the parents must have at least one A allele each. Therefore, one parent could have genotype AA (two A alleles) and the other parent could have genotype AO (one A allele and one O allele).

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The anaerobes were the first bacteria to exist on Earth, around 3.8 billion years ago. At that time, there was no oxygen in the atmosphere, therefore anaerobes were the only organisms capable of surviving.

For at least the first 1.5 billion years of the history of life, bacteria have been the sole known occupants of the planet. According to genetic analyses, the earliest and most primitive bacterial lineages were anaerobic, and each lineage independently developed the capacity to thrive in the presence of oxygen. There wasn't a lot of oxygen gas in the first atmosphere. So much oxygen would have been taken prior to photosynthesis by diminished geothermal outputs and rock weathering.

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Your lips or nose could let tiny airborne particles into your lungs. Air quality issues are caused by airborne particles, which include haze, smoke, and airborne dust.

Breathing in microscopic particles puts those who have asthma at more risk. Asthma symptoms may worsen as a result of the particles.

More than 23 million Americans suffer from asthma, a dangerous and potentially fatal chronic respiratory condition, which is connected to air pollution. Air pollution can exacerbate asthma symptoms and precipitate asthma episodes.

In order to lessen the health burden associated with the disease, EPA conducts research on the relationship between air pollution and asthma.

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