What is a muckraker? A. a gossip columnist intent on finding the flaws in presidents B. an investigative journalist who wanted to uncover the truth about corruption C. a crime boss able to take advantage of others by rigging government contracts D. a farmer able to raise crops despite the difficulties in obtaining credit​

Answer:

Testosterone is the primary sex hormone and anabolic steroid in males. In male humans, testosterone plays a key role in the development of male reproductive tissues such as testes and prostate, as well as promoting secondary sexual characteristics such as increased muscle and bone mass, and the growth of body hair.

We need 1 nanogram of plasmid in the transformation reaction when the transformation efficiency is given for 1000 colonies on plate P - 200.

Given the value of transformation efficiency (TE) = \(1 * 10^6\)

Number of colonies on the plate P-200 = 1000

To calculate the amount of plasmid (in nanograms) required for transformation, we need to first calculate the number of cells required for transformation.

To get desired number of cells we multiply the transformation efficiency and number of colonies given such that:

number of cells = \(TE (1*10^6) * 1000 colonies = 1 * 10^9 cells\)

Since 1 nanogram of plasmid is equivalent to \(1 * 10^9\) cells, we can conclude that we need to use 1 nanogram of plasmid in the transformation reaction.

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Answer:

Proper Enlightenment of the Danger and effects of smoking to the body system

Because it only just causes cancer it damages the lung in which the person will have problems with breathing

Answer:

all of them

Explanation:

Answer:

The correct answer is - A covalent bond between a phosphate group and two 5-carbon ring carbohydrates over two ester bonds.

Explanation:

A bond between a 5 carbon sugar and a phosphate group makes the sugar-phosphate-sugar backbone in nucleic acids. A diester bond links two different nucleotides together to form a polynucleotide.

These are the strong covalent bonds that links a 3' carbon atom of one sugar molecule and the 5' carbon atom of another in deoxyribose sugar in DNA and ribose sugar in RNA.

Answer: ATP plays a critical role in the transport of macromolecules such as proteins and lipids into and out of the cell. The hydrolysis of ATP provides the required energy for active transport mechanisms to carry such molecules across a concentration gradient. Active transport mechanisms do just this, expending energy (often in the form of ATP) to maintain the right concentrations of ions and molecules in living cells. ... Primary active transport directly uses a source of chemical energy (e.g., ATP) to move molecules across a membrane against their gradient.

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The role of ATP in the process of active transport is - It provides the energy that cells need to move molecules against a concentration gradient.

Active transport is the transport process where carrier proteins pick up specific molecules and take them through the cell membrane against the concentration gradient.

Thus, the role of ATP in the process of active transport is - It provides the energy that cells need to move molecules against a concentration gradient.

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isolated an aerobic gram-positive, endospore-forming bacterium that grows well on nutrient agar is belong to the group Bacillales.

Bacillus, which means "stick" in Latin, is a phylum of Gram-positive, rod-shaped bacteria and contains 266 identified species. The term is also used to refer to the shape (rod) of other similarly shaped bacteria; the phrase is also used to refer to the class of bacteria to which this genus belongs, which is known by the plural Bacilli. Obligate aerobes, which require oxygen to survive, and facultative anaerobes, which may live without it, are two different types of Bacillus species. If oxygen has been utilised or is present, cultured Bacillus species test positive for the enzyme catalase.

Bacillus can transform into oval endospores and can survive for years in this inactive state. One species from Morocco is said to have had its endospore survive being heated to 420 °C. [2] When nutrients are scarce, endospore development often occurs as a result of bacterial division within the cell wall followed by engulfment of one side by the other. They aren't actually spores (i.e., not an offspring).  The genus was initially classified by endospore production, but not all of these species are linked to one another, and many species have been transferred to other genera of the Bacillota.  Each cell only produces one endospore. Heat, cold, radiation, desiccation, and disinfectants cannot harm the spores.

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Answer: A large molecule made of many monomers.

Explanation:

Answer:

d

Explanation:

it has half the chromosomes

Answer:

To develop phenotypic traits by which typically animal or plant males and females will sexually reproduce and have offspring together.

Explanation:

Answer:

diploid

Explanation:

Answer:

Diploid cells

Explanation:

Hey there!

This is the correct answer because these cell have 2 sets of chromosomes

Answer:

depends on what she likes. Just be nice i guess

Explanation:

Answer:

I just say do what she want's you to do like if she is sad but she like sweets go get her sweets and flowers

Explanation:

Answer:

The theory of plate tectonics states that the Earth's solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle. ... At convergent boundaries, plates collide with one another.

Answer:

what is the image?

Explanation:

Genetically modified crops have the advantage to make the crops disease-resistant and high yield.

It is made by using the modification of the DNA of the crop through the genetic engineering method, which develops better outcomes from the original crop that helps the farmers.

The advantages of genetically modified crops:

Therefore, genetically modified cotton seeds are the crop that has, the advantage of disese resistance and high yield.

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Answer:

It is expensive and not an accurate indicator of soil pH

Explanation:

Soil sample is one of the ways of studying a particular soil in order to know some certain things about it.

Answer:

red orange yellow blue indigo violet

Explanation:

these are the names of the rainbow colors, ultraviolet is a name of a wave, and not am official name as part of the visible light spectrum. and white is all of the colors combined, and not scientifically not a part of the light spctrum.

Answer:

the nucleoid

Key Points. Prokaryotic cells lack a defined nucleus, but have a region in the cell, termed the nucleoid, in which a single chromosomal, circular, double-stranded DNA molecule is located.

Option A is correct as I, II, III, and IV are all a part of the circulatory

system.

The circulatory system, also known as the cardiovascular system, is a complex network of organs and vessels responsible for transporting blood, oxygen, nutrients, hormones, and other necessary substances to different parts of the body. It also plays an important role in the removal of metabolic waste and carbon dioxide from the body.

I. Blood is a vital component of the circulatory system that flows through the blood vessels and carries oxygen, nutrients, hormones, and other substances to different parts of the body.

II. Lungs are also a part of the circulatory system as they help to oxygenate the blood by allowing oxygen from the air to enter the bloodstream and carbon dioxide to be eliminated from it.

III. Heart is a muscular organ that pumps blood to the entire body. It is the center of the circulatory system and also responsible for regulating blood pressure.

IV. Blood Vessels include arteries, veins, and capillaries. Arteries carry oxygen-rich blood from the heart to the body and veins return oxygen-poor blood to the heart. Capillaries are small, thin-walled vessels where the exchange of oxygen, nutrients, and other substances takes place between the blood and the tissues.(option-a)

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Answer:

D. all of these.

Explanation:

An organic acid is lactic acid. Its chemical formula is CH3CH(OH)COOH. It is miscible with water and has a white solid state.

Thus, It transforms into a colorless solution when dissolved. In the process of production, both synthetic and natural resources are used. Due to the presence of a hydroxyl group next to the carboxyl group, lactic acid is an alpha-hydroxy acid (AHA).

It serves as a synthetic intermediate in a number of biochemical and organic synthesis industries. Lactate (or the lactate anion) is the conjugate base of lactic acid. The resulting acyl group is known as lactoyl.

Lactic acid has two enantiomers and is chiral. One is called l-lactic acid, (S)-lactic acid, or (+)-lactic acid, while the other, which is d-lactic acid, (R)-lactic acid, or ()-lactic acid, is its mirror image.

Thus, An organic acid is lactic acid. Its chemical formula is CH3CH(OH)COOH. It is miscible with water and has a white solid state.

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To investigate the lowest possible effective dose to use against a particular strain of bacteria, the following steps could be taken:

Collect bacterial strains: Obtain bacterial strains that are known to be resistant to antibiotics and test them in a laboratory setting.

Antibiotic sensitivity testing: Perform an antibiotic sensitivity test to determine the susceptibility of the bacterial strains to different antibiotics.

Test different doses: Test different doses of the antibiotics that showed activity against the bacterial strains in step 2. Use a range of doses, from the minimum to the maximum recommended dose, to determine the lowest dose that is effective against the bacterial strains.

Observe bacterial growth: Observe bacterial growth over time to determine whether the bacteria are being killed or inhibited at each dose level.

Determine minimum effective dose: Determine the minimum effective dose that inhibits bacterial growth for each bacterial strain tested.

Analyze data: Analyze the data collected from the tests to determine the lowest possible effective dose of the antibiotic for each bacterial strain.

Draw conclusions: Draw conclusions about the lowest possible effective dose of the antibiotic that could be used to treat the particular strain of bacteria.

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Answer:

ok

Explanation:

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Reduce: simply means lessen the use of unnecessary materials.

Waste management can be defined as the processes, schemes, activities and actions that are typically required to collect, treat and manage (handle) a waste material from its creation to its final disposal.

Basically, some importance of waste management are:

I. It makes planet Earth free from garbage or waste materials.

II. It promotes a clean, beautiful and healthful environment.

III. It helps to transform garbage or waste materials into something useful through recycling.

The 5Rs of waste management generally refers to an efficient, effective and modern way of managing garbage and waste material, these include:

Reduce is a waste management technique which involves lessening the use of unnecessary materials in the performance of a task.

For example, biodegradable materials can be burned to lessen waste.

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Answer:

The choice that is likely to result in the most competition is:

A) Two hawk populations utilize different populations of mice and small birds as their main food source.

Explanation:

Competition occurs when individuals or populations compete for limited resources. In scenario A, the two hawk populations rely on the same limited resources, namely mice and small birds, as their main food source. Since both hawk populations are dependent on the same prey, they will directly compete for these resources, leading to increased competition between them.

In scenario B, the snakes reducing the mice population will affect the availability of prey for the snakes, but it does not necessarily involve competition between snake populations.

In scenario C, the drought reducing the amount of grass for rabbits to feed on affects the resource availability for the rabbits, but it does not directly involve competition between rabbit populations.

Therefore, option A, where two hawk populations utilize the same food source, is the choice most likely to result in the most competition.