2. For letters A-F in the right hand margin give the scientific reference Mr. Smith uses to make
the statements that he does. If he provides no scientific reference, write NONE.

Societies that engage in war often place a greater emphasis on certain aspects. They are given below.

1) Military and defense capabilities   -  War necessitates the development and enhancement of military forces, technologies, and strategies to ensure security and protect national interests.

2) Hierarchical structures and authority   -  War often requires centralized command structures and strong leadership to coordinate military operations effectively.

3) Nationalistic ideologies   -  War can reinforce a sense of patriotism, nationalism, and collective identity within societies, fostering a strong sense of unity and purpose.

4) Resilience and adaptability   -  War challenges societies to adapt, innovate, and endure in the face of adversity, leading to advancements in various areas such as technology, medicine, and infrastructure.

5) Sacrifice and patriotism   -  War demands sacrifices from individ

uals and communities, promoting a spirit of selflessness, dedication, and loyalty to the nation.

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Answer:

Ribosomes

Explanation:

Ribosomes are used in cells for growth and repair they are held in the cytoplasm of the cell not the nucleus therefore they are never in contact with dna

Answer:

The first part states that all organisms are made of cells. The second part states that cells are the basic units of life. These parts were based on a conclusion made by Schwann and Matthias Schleiden in 1838, after comparing their observations of plant and animal cells. The third part, which asserts that cells come from preexisting cells that have multiplied, was described by Rudolf Virchow in 1858, when he stated omnis cellula e cellula (all cells come from cells).

Explanation:

Answer:

Meanwhile, your bones are busy making new blood cells. Working together, these systems maintain internal stability and balance, otherwise known as homeostasis. Disease in one body system can disrupt homeostasis and cause trouble in other body systems.

Explanation:

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Answer:

As a cell increases in size, it usually does not make extra copies of DNA. If a cell became too large, an "information crisis" would occur. The cell has more trouble moving enough nutrients and wastes across the cell membrane.

Explanation:

Answer:

for decomposers,parasites, recyclers,and symbionts,making it possible for members of the other kingdoms to be supplied with nutrients and to live.

The food web would be incomplete without organisms that decompose organic matter.

Answer:

A. Fungi are used to make bread.

C. Fungi can cause diseases in plants.

D. Fungi can cause diseases in humans.

F. Fungi are used in the development of antibiotics.

Explanation:

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The process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called a mutation.

A mutation is a sudden and lasting alteration in the DNA sequence that can influence genetic variation. Changes in the DNA sequence can influence phenotype, which may or may not have an effect on an organism's fitness. Mutations occur spontaneously, either from errors in DNA replication or from exposure to mutagenic agents. Mutations may happen in either coding or non-coding regions of the DNA, and they can be either silent or expressed.

Evolution is a natural process that results in the gradual change of inherited characteristics in populations over generations. It is the process of alteration in the inherited characteristics of species over successive generations. In other words, it is the process of gradual changes that happen to species over time as they adapt to their environments. It can be defined as a change in the gene frequency in a population over time.

Types of Evolution 1. Natural Selection 2. Genetic Drift 3. Gene Flow 4. Mutation 5. Non-Random Mating 6. Admixture 7. Mutation Pressure 8. Genetic Draft 9. Bottleneck and Founder Effect 10. Sexual Selection the process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called a mutation.

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Erythropoietin is a hormone produced by the kidneys that controls red blood cell production. It maintains red blood cell homeostasis and is crucial in response to hypoxia.

It is a protein hormone that is usually synthesized and released by the kidneys. Erythropoietin is the principal regulator of red blood cell production (erythropoiesis) in the human body. The hormone has a role in stimulating the production of new red blood cells (erythrocytes) in response to tissue hypoxia, which is a situation where there is a lack of sufficient oxygen supply to the cells. Erythropoietin is responsible for maintaining the balance of red blood cells in the body.

Erythropoietin is a hormone that is synthesized and secreted by the kidneys. It plays a major role in regulating red blood cell production in the human body. The hormone stimulates the production of new red blood cells in response to hypoxia, a state of inadequate oxygen supply to the cells. Erythropoietin is responsible for maintaining the balance of red blood cells in the body.

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If the levels of 285, 185, and 5.85 ribosomal RNAs are depleted, while the level of 55 ribosomal RNA remains normal, the RNA polymerase responsible for transcribing these ribosomal RNAs is likely to be RNA polymerase I.

RNA polymerase I is responsible for transcribing ribosomal RNA genes, including the genes encoding 285, 185, and 5.85 ribosomal RNAs. It specifically transcribes the large precursor rRNA (pre-rRNA) that undergoes processing to generate mature ribosomal RNAs. If there is a defect in RNA polymerase I, it would lead to reduced or depleted levels of these ribosomal RNAs.

On the other hand, RNA polymerase III is responsible for transcribing 5S rRNA, which is a component of the 55 ribosomal RNA. Since the level of 55 ribosomal RNA is normal in the examined cells, it suggests that RNA polymerase III is not affected.

In summary, if the depletion of 285, 185, and 5.85 ribosomal RNAs is observed while the level of 55 ribosomal RNA remains normal, the most likely affected RNA polymerase is RNA polymerase I, responsible for transcribing the larger ribosomal RNA genes.

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Frontal inversion occurs near large water bodies and it leads to a change or invertion in the property of the atmosphere.

Fontal inversion occurs through the impairment of cold air mass in warm air mass.

This leads to a warm air just above the two air masses as cold air distrupt the warm air masses.

Therefore, the frontal inversion takes place near water bodies and it leads to a change or invertion in the property of the atmosphere.

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phenotype-b

genotype-d

homozygous dominant-a

homozygous recessive-c

heterozygous-e

i believe this is correct i’m doing the same thing in my class

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Answer:

Mitosis

Explanation:

Since all the cells in the offspring begin with the two parental gametes, every cell in the body of the offspring will contain the mutation. When a mutation occurs during mitosis, the organism in which the mutation occurs is affected.

The cardiac cycle consists of mechanical events that are correlated with changes in electrical activity. The cardiac cycle can be divided into two phases: systole and diastole. During systole, the heart muscle contracts and pumps blood into the arteries. During diastole, the heart muscle relaxes and allows the heart chambers to fill with blood.

These mechanical events are controlled by changes in electrical activity within the heart. Electrical activity in the heart is generated by specialized cells called pacemaker cells. Pacemaker cells generate electrical signals that travel through the heart and cause the heart muscle to contract. This process is known as depolarization. The electrical activity of the heart can be measured using an electrocardiogram (ECG). The ECG records changes in electrical activity that occur during the cardiac cycle.

The P wave represents depolarization of the atria, while the QRS complex represents depolarization of the ventricles. The T wave represents repolarization of the ventricles. The ECG can be used to diagnose various heart conditions by identifying abnormalities in the electrical activity of the heart.

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Carbon dioxide (CO₂) is a signifiant gas that composes the atmosphere and is necessary to produce photosynthesis. Carbon sinks include forests and oceans that are involved in the gas balance.

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Carbon dioxide (CO₂) is a gas that, among other gases, composes the atmosphere, mainly the troposphere, which is closest to the Earth. The balance of this gas in nature is very complex and involves interactions between the atmosphere, the plants, and the oceans.

CO₂ is essential for plants to photosynthesize. Photosynthesis transforms CO₂ into organic compounds and releases oxygen as final products together with carbohydrates.

This gas is not nocive at concentrations between 300 and 500 ppm. But the current increase in CO₂ is a responsible component of the greenhouse effect involved in global warming and climate change. The rise in CO₂ is possibly the best documented.

The atmospheric increase of CO₂ follows a natural fluctuation trend that has been happening throughout the whole of Earth´s history. It has been proven that the current rise in CO₂ concentration overlaps the expected variation and that the reached levels at the moment exceed the highest past registered levels. This substantial increase must be related to human activities, such as forest destruction, industry, among others.

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Answer:

C

Explanation:

I did the assignment

Answer: physical activity, oxygen, cellular respiration

Explanation:

Answer:

1. There are two main types of skeletal muscle fibers, slow twitch and fast twitch. The differences in these fibers influence how the cells contract and how muscles respond to physical activity.

2. The slow twitch muscles are more efficient at using oxygen to generate ATP through cellular respiration.

Explanation:

Slow-twitch fibers rely on aerobic respiration to fuel muscle contractions and are ideal for long term endurance.Fast-twitch fibers rely on anaerobic respiration to fuel muscle contractions and are ideal for quick contractions of short duration.

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For every 1 part of the sweet feed, we will need to add 0.143 parts of soybean meal to achieve a 14% protein content in the final feed mixture.

A protein supplement is defined as the protein and nutrition sources that are obtained from external sources in the form of powders and tablets used by athletes, bodybuilders etc. to achieve their daily protein intake amounts.To determine the ratio of feed to supplement that you need to mix, you can use the following formula:

(Feed protein content - Desired protein content) / (Supplement protein content -Feed protein content)

In this case, the feed protein content is 10%, the desired protein content is 14%, and the supplement protein content is 38%.

So, putting the values:

(0.14 - 0.1) / (0.38 - 0.1) = 0.04 / 0.28 = 0.143

This means that for every 1 part of the sweet feed, you will need to add 0.143 parts of soybean meal to achieve a 14% protein content in the final feed mixture.

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Answer is  Plasmid.

A plasmid is a small, circular, double-stranded DNA molecule that is distinct from a cell's chromosomal DNA. Plasmids naturally exist in bacterial cells, and they also occur in some eukaryotes. Often, the genes carried in plasmids provide bacteria with genetic advantages, such as antibiotic resistance.

Answer:

The 11 organ systems include the integumentary system, skeletal system, muscular system, lymphatic system, respiratory system, digestive system, nervous system, endocrine system, cardiovascular system, urinary system, and reproductive systems.

Explanation:

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The motor cortex is the area of the cortex that is largely responsible for the body's voluntary movement.

It is located in the frontal lobe of the brain, just in front of the central sulcus. The motor cortex is organized in a specific manner, with different areas of the cortex controlling movement in different parts of the body. The organization of the motor cortex is called the motor homunculus, which is a representation of the human body in which the size of body parts is proportional to the amount of cortex devoted to their control.

When a person decides to move a part of their body, the motor cortex sends signals to the appropriate muscles to initiate and control the movement. The motor cortex also receives input from other areas of the brain, such as the basal ganglia and the cerebellum, which help to coordinate and refine movements. Overall, the motor cortex is essential for voluntary movement and is involved in many activities such as walking, talking, and reaching for objects.

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The central nervous system (CNS) is protected by the bones and is made up of brain and spinal cord. And, no normal microbiota is found in the CNS and the PNS. Thus, the correct options are C, and E.

The nervous system of humans is divided into two components: the central nervous system (CNS), which is made up of the brain and spinal cord, and the peripheral nervous system (PNS), which includes all the nerves outside the brain and spinal cord.

The CNS and PNS does not have normal microbiota due to the presence of blood-brain barrier in the nervous system which does not allow the movement of substances across the nervous system.

Therefore, the correct option is c and e.

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Answer:

Ans :

Explanation:

Both natural twinning and artificial twinning produce identical individuals or clones. The key difference between natural and artificial twinning is that natural twinning takes place inside the womb of the mother while artificial twinning takes place in the lab inside the Petri plates.

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'An enzyme responsible for flower color does not fold correctly in cooler temperatures, and the greenhouse is warmest in the center' best explains the differences in flower color of the African violets in the greenhouse

Much like human skin color, violets' color is driven by proteins, especially in the case of violets, by enzymes. Enzymes (generally like proteins) need to function at a specific temperature. Outside this temperature, the enzyme cannot reach its correct form and eventually its function in vivo changes.

Regarding the above question, the plants were in a greenhouse that changed the natural temperature of the environment, so the violets' color change was due to the enzymes involved in flower color shrinking appropriately at low temperatures and the greenhouse being warm in the middle.

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Complete question :

An African violet grower observes that genetically identical African violet plants growing near the walls of the greenhouse have white flowers, that plants growing farther away from the walls have pale blue flowers, and that plants growing nearest the center of the greenhouse have dark blue flowers.

Which of the following best explains the differences in flower color of the African violets in the greenhouse?

A Warmer temperatures result in genotypic alterations, which result in flower color differences.

B The plants along the walls of the greenhouse are homozygous recessive and therefore have white flowers.

C An enzyme responsible for flower color does not fold correctly in cooler temperatures, and the greenhouse is warmest in the center.

D More light is available along the walls of the greenhouse, so the flowers need less pigment to absorb sunlight for photosynthesis.

Answer:

water vapor

Explanation:

Energy from the sun changes the water on Earth’s surface into a gas that rises up to form clouds. The gas is called water vapor. The water vapor in clouds moves through the atmosphere until it falls to Earth’s surface again.

Answer:

Condensation  

Explanation:

Answer:

Photosynthesis is primarily controlled by leaves, but other parts of the plant exposed to light can also develop chlorophyll and photosynthesize. CO2 is taken from the air for photosynthesis. Stomata allow this to occur. Plants absorb water through their roots and move it to their leaves through the xylem, then exhale oxygen as a waste product. A portion of this oxygen is used by the plant to respire.

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Population growth rates are greatest when there are 250,000 tons of cod in the Grand Banks.

A population is a subset of individuals of a species that occupy a particular geographical area and interbreed in sexually reproductive species. Determining the geographical boundaries of populations is easy for some species but more difficult for others.

"Population growth rate" is the rate at which the population of a population is increasing over a period of time, expressed as a percentage of the original population. It is the average annual rate of change in population size for a given country, region, or region over a given period of time. To calculate population growth (PG), take the difference (subtraction) between the original population and the population at time 1, divide by the original population, and multiply by 100.

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Answer:

Chloroplasts

Explanation:

Explanation:

the answer is chloroplasts as they contain chlorophyll which absorbs the light energy

Answer:

DNA LIGASE

Explanation:

The enzyme DNA LIGASE joins the two DNA molecules by covalent bonds. This enzyme, which the cell normally uses in DNA replication is a DNA pasting enzyme that catalyzes the formation of covalent bonds between adjacent nucleotides, joining the strands.

The reason that explains why DNA replication occurs in a continuous-discontinuous fashion is that DNA polymerase only works to add nucleotides in one direction of the growing chain.

DNA replication refers to the process by which the genetic material is replicated before cell division.

DNA replication involved specific enzymes that work in a concerted manner to replicate DNA molecules.

DNA polymerase is a specific enzyme used during DNA replication to add nucleotides in direction 5' to 3', which is the direction of the growing chain.

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