What are the functions of a catalyst in a reaction? select all that apply
A)sped up the reaction.
B:Increase the activation energy needed
C: lower the activation energy needed
D:maintain the reaction
E: slow down the reaction

The tone of this trailer can be described as tense.

The tone can be defined as the attitude of the writer towards his/her text. Some examples of tone include:

In the trailer described, the tone can be described as tense. This is because:

This creates tension in the audience as they will want to know what happens next.

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Answer:

ty

Explanation:

Waves at the surface of the ocean and lakes are orbital progressive waves. This type of wave forms at the boundary of two liquids of different density, in this case air and water.

Answer:

The best way to improve the survival of wheat during a drought is to manipulate the cells as they undergo mitosis.

Therefore, option A - Scientists manipulate the cells as they undergo mitosis - is the best way to improve the plants.

Prokaryote cell and Eukaryote cell have significant differences in their structures, functions, and complexity. A comparison between prokaryote cell and eukaryote cell is given below: Prokaryote cell .They lack a nucleus and are unicellular organisms without membrane-bound organelles .

They contain a circular DNA molecule located in the nucleoid, which is surrounded by the cytoplasm. A rigid cell wall made of peptidoglycan is present in bacteria. The cell wall acts as a protective barrier around the cell, shielding it from environmental threats. On the other hand, archaeal cell walls are composed of different materials than bacterial cell walls. Pili and flagella are present in most bacteria.

The pili help the bacteria attach to surfaces, while the flagella are used to propel the cell .Eukaryote cell .They have a well-defined nucleus and are multicellular organisms with membrane-bound organelles .Cells may have a cell wall, but it is not made of peptidoglycan as in the prokaryotic cell. Instead, plants have cell walls made of cellulose, while fungi have cell walls made of chitin .

They have mitochondria, which are the site of cellular respiration and produce ATP, and chloroplasts, which are the site of photosynthesis. These organelles are absent in prokaryotic cells . Eukaryotic cells are larger and more complex than prokaryotic cells.

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The blood measurement that would be the most helpful in furthering the investigation would be lactate and pyruvate.

Lactate and pyruvate are two molecules that help in the production of energy in the human body. In normal circumstances, lactate is generated in the muscles and then transported to the liver where it gets converted into glucose through a process called gluconeogenesis. Pyruvate is produced from glucose as it enters the cell. The pyruvate then undergoes some reactions to generate ATP (adenosine triphosphate) and NADH (nicotinamide adenine dinucleotide).

Measuring lactate and pyruvate levels in the blood can help identify various metabolic diseases. It can help doctors diagnose conditions such as mitochondrial disease, a disease that interferes with the energy-producing processes in cells. In this disease, the lactate levels are higher because the body is producing more lactate due to the impaired energy production. Also, in severe medical emergencies such as sepsis or severe injury, lactate levels can rise because of reduced oxygen supply to the tissues. Therefore, lactate and pyruvate measurements can be helpful to identify metabolic diseases or assess the severity of medical emergencies.

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Answer:

The answer is 2

Explanation:

Based on his experiments on pea plants, Gregor Mendel concluded that an offspring receives two factors / genes for a single characteristic. These factors exist in pairs, with one factor inherited from each parent. So, here option A is correct.

Mendel's experiments involved cross-breeding different varieties of pea plants and carefully tracking the inheritance patterns of specific traits, such as flower color, seed texture, and plant height. Through his observations, he formulated the fundamental principles of inheritance, which laid the foundation for modern genetics. Mendel's conclusion was based on his observation of the consistent segregation of traits in the offspring. He found that when two pea plants with different forms of a trait (such as tall and short plants) were crossed, the first generation of offspring (F1 generation) all displayed the dominant form of the trait (in this case, all tall plants).

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complete question is below

Based on his experiments on pea plants, how many factors did Mendel conclude an offspring receives for a single characteristic?

A,offspring receives two factors

B,offspring receives ten factors

Answer:

1. co2 and sunlight

2. glucose and oxygen

3. palisade

4.site

5. xylem and phlegm

6. stomata

7. guard cells

The diameter Irina calculated for the needle should be 0.051 nm. To calculate the diameter of the needle, Irina can use the principles of diffraction.

The diameter of the central bright circle formed on the wall can be related to the diameter of the needle and the wavelength of the laser light.

Let's denote the diameter of the needle as "d" and the diameter of the central bright circle as "D."

The formula for the diameter of the central bright circle in a single-slit diffraction pattern is given by:

D = (2 * λ * L) / d,

where λ is the wavelength of the laser light, L is the distance between the paper with the hole and the wall, and d is the diameter of the needle.

Given the following values:

λ = 670 nm = 670 × 10^(-9) m,

L = 23.7 m, and

D = 19.7 cm = 0.197 m,

We can rearrange the formula to solve for the diameter of the needle (d):

d = (2 * λ * L) / D.

Substituting the given values:

d = (2 * 670 × 10^(-9) m * 23.7 m) / 0.197 m.

d = 0.051 mm.

Therefore, Irina calculates the diameter of the needle to be approximately 0.051 mm.

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The self-limiting and nonfatal nature of gastrointestinal diseases, with fluid replacement, explains their global prevalence. These disease characteristics contribute to the presence of diverse pathogens causing gastrointestinal illnesses.

Gastrointestinal tract diseases being self-limiting and nonfatal, as long as fluids are replaced, means that most individuals can recover from these diseases without medical intervention. This observation helps explain why such diseases are commonly found in humans worldwide.

As long as proper hydration is maintained by replacing fluids lost due to vomiting or diarrhea, the body can overcome these diseases on its own. This self-limiting nature allows the diseases to run their course and resolve without necessarily causing severe consequences, leading to a high prevalence across different populations.

The self-limiting and nonfatal characteristics of gastrointestinal tract diseases make it possible for a wide range of pathogens to cause these diseases. Since most individuals can recover without medical intervention, the body's immune system can effectively combat and eliminate various pathogens.

This means that different pathogens, such as bacteria, viruses, or parasites, can cause gastrointestinal diseases without necessarily causing severe harm or fatalities. This flexibility allows for a diverse range of pathogens to thrive and cause gastrointestinal diseases in humans, leading to the observed variety of causative agents.

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Answer:

their fins or webbled feet hels them to move and search food to eat .

Answer:

It is the duck foot

Explanation:

it has webbed feet

Answer:

Before it can be taken into the atmosphere nitrates no3 the ammonification process will make this happen.

In 1939, Heinrich Klüver and Paul Bucy surgically lesioned a structure called the amygdala in the brain's limbic system, thereby eliminating defensive responses in various mammal species.

This is referred to as the central organ of the nervous system and contain millions of nerve cells which transmits signals to it from various sensory organs for processing. The brain and the spinal cord make up the central nervous system and have their various functions.

The amygdala is referred to a part of the brain which is primarily responsible for decision making and emotional responses and was lesioned in an experiment by some scientists.

This led to the elimination of defensive responses due to a lack of emotion being encountered by the set of mammals which were used for this procedure and is therefore the reason why it was chosen as the correct choice.

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Answer:

Well, nutrients can help give you protein and vitamins, So you can do your daily things like walking, running, or doing what you are doing right now typing on your computer.

Explanation:

The climate in Chris’s city is tropical and the climate in Mark’s city is dry climate. The correct options are C and B.

Precipitation is the amount of moisture or water present in the air. During the rainy seasons, precipitation is high and during summer the precipitation is low, and it causes air lighter and warm.

The climate in Chris' city is humid tropical.

The tropical wet climate type, is somewhere near the equator, as regions near the equator typically experience high precipitation and warm, humid climates.

The weather in Mark's city is chilly desert.

The city where Mark lives will have a cold desert climate because of the large temperature variations, hot summers and cold winters, and very little precipitation.

Therefore, the correct option is C. Tropical and B. Dry.

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Chris’s city is in a tropical climate, specifically a tropical rainforest climate.

Mark’s city is in a dry climate.

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b. A plane dividing the body into upper and lower sections is the best representation of a transverse plane in relation to the human body. It cuts across the body horizontally, perpendicular to the longitudinal axis, separating the upper portion (superior) from the lower portion (inferior). So, option B is the right choice.

Therefore, option b. (a plane dividing the body into upper and lower sections) is the best representation of a transverse plane in relation to the human body.

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The complete question may be like:

Which of the following best represents the orientation of a transverse plane in relation to the human body?

a. A plane dividing the body into front and back sections.

b. A plane dividing the body into upper and lower sections.

c. A plane dividing the body into left and right sections.

d. A plane dividing the body into diagonal sections.

Falsifiable: The shoreline of Panama gives a magnificent experience, and swimming in warm water is more delightful.

Non-falsifiable: Basalt erodes more slowly than limestone, and algae can develop in tide pools that are shallower.

Falsifiability is the capacity to show that a claim, assertion, theory, or hypothesis is false. The idea of falsifiability states that a scientific hypothesis can only be believed if it can be disproven. This implies that the theory must be able to be disproven by testing. The possibility of the hypothesis being disproved at a later point in time or location does not necessarily imply that it is faulty or inaccurate.

Those hypotheses that are intrinsically impossible to refute due to technical or subjective issues. Confidently stating that a thesis or hypothesis is true or untrue, even when the notion or hypothesis may not be able to be refuted by observation or the results of any physical experiment, is typically proof; non-falsifiability is non-falsifiability without strong or sound reasoning.

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Answer:

1)I)replacing dead cells

ii)cell division in the liver

2) in meiosis, there are 23 chromosomes

in mitosis, there are 46

Answer:

B

Explanation:

Effective presentations are typically organized into three sections Opening, Body, Closing.

Opening section includes an attention-grabbing statement, a brief introduction of the topic, and a clear statement of the purpose or goal of the presentation. The opening section should be engaging and establish a connection with the audience.

Body: This is the main section of the presentation where the topic is explored in detail. It may include supporting evidence, research findings, personal anecdotes, case studies, and other relevant information.

The body of the presentation should be organized logically, with each point or idea flowing smoothly into the next.

Closing: This section includes a summary of the key points discussed in the body of the presentation, a restatement of the purpose or goal, and a clear call to action.

The closing section should leave a lasting impression on the audience and motivate them to take action or further explore the topic.

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Holding all else equal, the future value of a lump sum will be larger if the number of time periods is larger. In other words, the time value of money holds that receiving a sum of money today is worth more than receiving the same amount in the future due to its earning potential or opportunity cost.

Therefore, the longer the money is left to grow, the greater the future value will be. This concept is commonly applied in investing and financial planning where individuals are encouraged to start saving and investing early to take advantage of compounding. The future value of a lump sum is positively related to the number of time periods and can be significantly increased by starting early and taking advantage of the power of compounding.

Holding all else equal, the future value of a lump sum is directly related to the number of time periods. Starting early and taking advantage of the power of compounding can significantly increase the future value.

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Answer: Yes

Explanation:

Plant cells come in all shapes and sizes. Some are round, some are brick shaped, others look like shoe strings. The one thing they have in common is a rigid cell wall. This means that they cannot change shape very easily. The straight, strong walls give the plant cells tensile strength and allow them to stack on top of each other. This enables plants to grow upwards.

e. A and C. (During atrial systole, atrial pressure exceeds ventricular pressure, and AV valves are open.)

During atrial systole, both options A and C are correct. Option A states that atrial pressure exceeds ventricular pressure, which is true during atrial contraction. This allows the atria to forcefully pump blood into the ventricles. Option C states that AV (atrioventricular) valves are open, which is also true. The AV valves, including the tricuspid valve on the right side and the mitral valve on the left side, open during atrial systole to allow the flow of blood from the atria into the ventricles. This filling of the ventricles accounts for approximately 70% of the ventricular filling (option B). Option D, which states that valves prevent backflow into the great veins, is not accurate during atrial systole as the focus is primarily on the atrial-ventricular filling process.

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Answer:

Explanation:

i tack test

Answer:

Explanation:

Explanation:

Hypogeal germination is when the plant is germinated under the ground. An example of this would be the pea plant.

epigeal germination is the opposite of that. Germination takes place above the ground. normal bean plants have epigeal germination

Answer:

adverse effect on human and enviroment.

Explanation:

UV radiation generates ground-level ozone (o3) and dome particulate matter( PM frequently called aerosol ) that include nitrate, silfate and organic aerosols causing adverse effects on humans and the environment. UV promotes the formation of hydroxyl radicals that act as cleaning agents for the troposphere.

Three catastrophic results of radiation on the environment are :

The results of heavy UV radiation on the environment can lead to the degradation of the environment and pose a significant health threat to Humans as well in the environment. some of the results of radiation includes the formation of organic Aerosol which can pose health threat ( Lung diseases ) to humans. while hydroxyl radicals acting as cleaning agents in the troposphere damages the atmosphere as well.

Heavy atomic blasts is an example of heavy radiation which can lead to skin burns and Cancer in Humans.

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Answer:

c

Explanation:

Marine fossils as their name say are should usually be in the ocean. not in a freshwater lake

Hope this helps

Answer:

To examine the importance of light to a plant's growth.

Explanation:

To give a background to this question, I will define a key term "Photosynthesis". Photosynthesis is a compound word made up of photo (which means "light") and synthesis (which means "to put together").

It is the process by green plants use sunlight to obtain nutrients from carbon dioxide and water.

The experiment us meant to examine the effect of deprivation of sunlight on a plant's growth.

Therefore, the essence of keeping one set of seedlings in the light is to compare if there is any difference in growth between the seeding kept in the dark cupboard and that kept in the light.

This enables us to conclude whether or not light is important for the growth of a plant.