Trevor wanted to find out what fertilizer worked best for growing marigolds. He put Miracle Grow on one, Scotts fertilizer on another, and no fertilizer on the third marigold. What is the control?
a. Marigold with no fertilizer
b. Type of fertilizer
c. Plant growth
d. Amount of water

Answer:

Keystones species are very functional in the ecosystem in which there removal or absence as predators can lead to explosion of prey populations and decrease diversity. Keystone species help define an ecosystem and without they ecosystem can cease to exist.

Explanation:

Keystone species are predators species that help regulate the populations of other species through its activities or effects on the ecosystem. Keystone species exert both direct or indirect activities on the ecosystem. An indirect interaction occurs when species influence one another through their interactions with other species. Which can be inform of competition, interaction modifications e.t.c

At 12 hours, there are 120 strands of bacteria present.

The population of bacteria can be modeled using the equation P(t) = \(15(2)^(t/4)\), where P(t) represents the number of strands of bacteria at time t in hours.

To find the number of strands of bacteria at 12 hours, we substitute t = 12 into the equation:

P(12) = \(15(2)^(12/4)\)

P(12) = \(15(2)^3\)

P(12) = 15(8)

P(12) = 120

Therefore, at 12 hours, there are 120 strands of bacteria present.

It's important to note that the given population model assumes exponential growth, where the number of strands doubles every 4 hours. Starting with an initial population of 15 strands, the exponent in the equation (t/4) represents the number of doubling periods that have occurred. Each doubling period corresponds to 4 hours of time.

In this case, at 12 hours, three doubling periods have occurred (12/4 = 3). Starting with the initial 15 strands, each doubling period doubles the population, resulting in a final count of 15 * \(2^3\) = 120 strands of bacteria at 12 hours.

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Answer:

the answer for this particular question is B

Explanation:

B

The belief that scientific psychology should be studying only observable behaviours is known as behaviourism (choice B)

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The belief that scientific psychology should be studying only observable behaviors is known as  behaviorism.

Behaviorism focuses on the idea that all behaviors are learned through interaction with the environment

Thus, option "B" is correct.

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Answer: A helium balloon rises because helium is less dense than air. A balloon filled with regular air, however, is denser than the surrounding air because the air inside it is under pressure.

Explanation: i looked it up for you so i could make sure it was right for you hope this helps!!!!!!!!!!!

Answer:

they all died or something

Explanation:

Answer:

Freshwater ecosystems are a subset of Earth's aquatic ecosystems. They include lakes, ponds, rivers, streams, springs, bogs, and wetlands. They can be contrasted with marine ecosystems, which have a larger salt content.

Answer:

The fluidity of the plasma membrane is primarily provided by the Phospholipids

Answer:

WEAR A LAB COAT TO PROTECT YOUR CLOTHES AGAINST THESE CHEMICALS, AND SAFETY GLASSES TO PROTECT EYES, UNLESS YOU ARE A SPECTACLE WEARER. (EXCEPT WET GLASSWARE, AND EMPTY CHEMICAL BOTTLES!). BE ESPECIALLY CAREFUL WITH HOT LIQUIDS AND WATERBATHS. KEEP CHEMICAL BOTTLES OFF THE BENCH, AND DO NOT CONTAMINATE PIPETTES

Explanation:

Answer:

C. Clones

Explanation:

Clone definition: An organism or cell, or group of organisms or cells, produced asexually from one ancestor or stock, to which they are genetically identical.

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Answer:

Answer:

b. make the proteins coded for in the DNA

Explanation:

Transcription and translation take the information in DNA and use it to produce proteins.

Answer:

Darwin used multiple lines of evidence to support his theory of evolution by natural selection -- fossil evidence, biogeographical evidence, and anatomical evidence.

Explanation:

Answer:

Explanation:

African elephants primarily inhabit the Democrtic Republic of the Congo and close surrounding areas.

Answer: The answer is A, organs produce hormones that change a child's body into an adult.

Explanation: The endocrine system is responsible for regulating a range of bodily functions through the release of hormones.

Hormones are secreted by the glands of the endocrine system, traveling through the bloodstream to various organs and tissues in the body. The hormones then tell these organs and tissues what to do or how to function.

If something in the ecocolumn died, it was likely consumed by decomposers.

Decomposers are organisms, such as bacteria, fungi, and detritivores, that break down dead organic material and recycle nutrients back into the ecosystem.

They play a crucial role in the decomposition process, breaking down organic matter into simpler compounds that can be used by other organisms.

Detritivores are larger organisms, such as earthworms, millipedes, and some insects, that feed on dead organic material. They physically break down the dead organism into smaller pieces, increasing the surface area available for decomposition by bacteria and fungi.

By feeding on the dead material, decomposers help to break it down and release nutrients, allowing them to be cycled back into the ecosystem and utilized by other living organisms.

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Explanation : I think it is B because a cladogram shows how species are related AND also shows the evolution between them.

The true statement about enzymes among the given options is: (b) Enzymes can require vitamin or mineral cofactors for their function.

Enzymes are biological catalysts that facilitate and accelerate biochemical reactions in living organisms. They are typically proteins, although some RNA molecules can also exhibit catalytic properties. Enzymes can require additional molecules, known as cofactors, to perform their catalytic function optimally.

Cofactors can be organic molecules, such as vitamins or essential fatty acids, or inorganic ions, such as minerals. These cofactors assist enzymes by participating in the catalytic reaction, helping to bind substrates, or transferring functional groups during the reaction process.

The other statements are not accurate:

(a) Enzymes do not require essential fatty acids as coenzymes universally.

(c) Enzymes are not chemicals secreted from the endocrine glands into the blood. They are proteins or RNA molecules that perform catalytic functions.

(d) Enzymes are not carbohydrate-based substances. They are primarily composed of proteins and, in some cases, RNA.

Therefore, (b) Enzymes can require vitamin or mineral cofactors for their function is the correct answer.

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The different shades observed after adding Benedict's solution to two unknown solutions indicates that the concentration of reducing sugar in each solution is different. The deeper the color, the higher the concentration of reducing sugar present. This information can be used to determine the type and amount of reducing sugar present in each solution, which is important for many applications in food science, medicine, and biochemistry.

In high school chemistry, students learn about the Benedict's test, which is a common chemical test used to detect the presence of reducing sugars. When Benedict's solution is added to a solution containing reducing sugars, the solution changes color from blue to green, yellow, orange, or red, depending on the concentration of reducing sugar present. However, if the solution does not contain reducing sugar or contains very low concentrations, then the color of the solution remains blue.

When two different shades are observed after the addition of Benedict's solution, it suggests that the concentrations of reducing sugars in the two solutions are different. The shade of color produced by the reaction is directly proportional to the concentration of reducing sugar present in the solution. The higher the concentration of reducing sugar, the more intense the color change will be.

The Benedict's test is based on the reduction of Cu(II) ions (blue) to Cu(I) ions (red-orange) by reducing sugars, such as glucose and fructose. The intensity of the color produced depends on the number of Cu(I) ions that are formed, which is proportional to the concentration of reducing sugar present in the solution.

Therefore, if one of the solutions produces a deeper shade of color than the other, it suggests that the concentration of reducing sugar in that solution is higher than the other solution. This could be due to a number of factors such as the amount of reducing sugar present, the type of reducing sugar present, and the rate of the reaction.

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In the fusion of a vesicle with a target membrane, proteins play a central role. Specifically, a group of proteins known as SNAREs (Soluble NSF Attachment Protein Receptors) are responsible for mediating the fusion process.

SNAREs are present on both the vesicle and the target membrane, and when they interact, they form a complex that pulls the two membranes together, leading to fusion. Additionally, other proteins, such as Rab GTPases and tethering factors also play important roles in regulating and facilitating the fusion process.

A class of cytosolic adaptor proteins known as soluble N-ethylmaleimide-sensitive factor attachment proteins (SNAP, or Sec17p in yeast) is involved in vesicular fusion at membranes during intracellular transport and exocytosis. SNAPs serve a crucial function in recycling the fusion complex's constituent parts by interacting with the SNARE complex and NSF proteins. Assembling the vesicle fusion complex and disassembling it after a fusion event both include SNAPs. After membrane fusion, the tethering SNARE protein complex separates in response to steric adjustments brought on by the ATPase NSF. The energy supplied by NSF is transported across the SNARE complex and SNAP, allowing the proteins to disentangle, and regenerated for subsequent fusion events.

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meteorite impact or a movement (earthquake) underwater.

The cells that provide this support and protection in neural tissue are called glial cells, also known as neuroglia. Although neural tissue has a minimal extracellular matrix, it still requires support and protection.

Glial cells are non-neuronal cells that surround and support neurons in the nervous system. They make up about half of the total volume of the nervous system and have a variety of functions, including providing structural support and protection to neurons, regulating the extracellular environment around neurons, and aiding in neuronal signaling. There are several types of glial cells, including astrocytes, oligodendrocytes, microglia, and ependymal cells, each with their own specific functions.

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It is false that a country music star goes through gender reassignment because its' totally there wish to reassign their gender or not.

The term "gender reassignment" applies to a transgender person and is a legal concept. Any person who has suggested, begun, or finished a procedure to switch their sex is included. SRS is not morally or scientifically suitable since it contravenes fundamental moral and legal norms.

Preferably, compositions are given a music star emblem based on how well they performed. The popularity of the song and whether it is an often famous song on a record are the main factors here. The tracks on a record that are performed the most frequently are typically given stars.

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An organelle made of membranous tissue called the endoplasmic reticulum (ER) has a portion of the nucleus' membrane as a part of its membrane ribosomes . the rough ER, which is a section of the ER.

The rough endoplasmic reticulum, also known as RER, is named for the way that it looks since it is covered in ribosomes, which are small, protein-producing units.

By generating ribosomes, the nucleolus is an essential component of protein synthesis. The cellular organelles that make proteins are called ribosomes. The cytoplasm is where they are then taken.

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The statements about the embryos that are true are:

The correct option are B, C, and D.

An embryo is the first step of a multicellular organism's development.

Embryonic development is the phase of the life cycle that starts right after the male sperm cell fertilizes the female egg cell in sexually reproducing animals.

The embryo of all organisms starts from a fertilized egg and usually has several common features at the early stages of development.

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Answer: The most appropriate microscope for studying the internal parts of the cell is ELECTRON MICROSCOPE. The correct option is B.

Electron microscope, which is a compound microscope is usually used to study the internal environment  of the cell because of the easiness with which one can easily distinguish the cell organelles from one another. Electron microscope gives great clarification of the cellular components and allow scientists to observe minute details about cellular structures. Electron microscope usually magnify specimens to one million times of their real sizes.

Answer:

\(\boxed{\mathrm{Electron \: microscope}}\)

Explanation:

Electron microscopes have high range of magnification and resolution, the tiniest structures of cells and organelles can be viewed through the microscope. Scientists use it for biomedical research.

Answer:

I believe it is C, with a 99% certainty

Answer:

Promoting the production of sperm.