Which of these instruments is BEST used for observing a single-celled organism like the one seen here? A) hand lens B) watch glass C) light microscope D) electron microscope

Answer:

B Makes food during photosynthesis

Explanation:

Hello!

The answer should be the third option C.

Drug abuse is best defined as; "the nonmedical or improper use of a drug that can interfere with a healthy life".  

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-Charlie

I believe the answer is C as that is the definition. Even if it was a subscription, the constant use of it without stopping can interfeer with a haelthy life.

hope this helps :)

Answer:  A) once, during interphase I

Explanation:

Meiosis is a form of eukaryotic cell division which results in four daughter cells, each of which has half the number of chromosomes as their parent cell.

There are two major phases that a cell goes through during meiosis. About 80% of of the total cell division is interphase.

Its during interphase 1 that the cell replicates its chromosomes, where each of the chromosome has a couple of sister chromatids.

Also, the chromosomes replicate only once.

The correct answer is option A. During the process of meiosis, chromosomes replicate

once, during interphase I.

The answer should be positively because eating is good....if not I'm super sorry. its a 50/50 chance lol

Answer:

The food pyramid is an example of science positively influencing society.

Explanation:

We consider something as a positive influence, when it results in improvements for society and citizens as a whole. In this case, we can say that the food pyramid is an example of science that positively influences society. This is because the food pyramid informs how people should eat healthily, without excesses and supplying all the needs of their body, leaving the population more healthy and nourished.

Answer:

space probe :D

Explanation:

What are the options?

The correct answer is space satellite.

The on-orbit repairs becomes much easier if a satellite is attached to the spacecraft and if the spacecraft has a manipulator arm. Then this arm can be used to move large components around. This also provides astronauts with a surface to stand on and be attached to.

Air moves from higher pressure to lower pressure which causes the wind to flow in a particular direction.

Air density variations, which are connected to temperature, are what is causing this shift in pressure which creates a particular difference in air pressure gradient.

Because warm air's gas molecules move faster and further apart than those in cooler air, warm air is less dense than cooler air.

Air density has a direct relationship to pressure, and changes in temperature, humidity, and rising or sinking air are the main factors influencing air density.

Therefore air density is related to pressure so it moves from higher pressure to lower pressure.

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Changes in air density cause differences in air pressure.

Cold air is denser than warm air because gas molecules are at lower velocities and are compact to each other in cold air. Air flowing from high-pressure to low-pressure zone forms winds. Air density increases when the temperature is constant and pressure increases.

Similarly, if the temperature increases and pressure is constant the density will decrease. A 3% increase in temperature can decrease air density by 1%.

Thus, change in temperature and pressure can cause changes in air density which can cause differences in air pressure.

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1. C. Metaphase

2. F. Cytokinesis

3. D. Anaphase

4. E. Telophase

5. B. Prophase

6. A. Interphase

1) Metaphase

2)Cytokinesis

3) Anaphase

4)Telophase

5)Prophase

6) Interphase

oui :>

2NH3 is equivalent to N2 + H6 since the 2 at the beginning gets distributed to both atoms. Knowing this you can rewite the equation as

H2 + N2 = H6 + N2

The N2 can cancel out leaving

H2 = H6

You now have to ask ‘2 times what equals 6?’ The answer is obviously 3 at this point.

Answer: C. 3

To balance the reaction H2 + N2 → 2 NH3, a coefficient of 3 should be placed in front of H2.

In the reaction H2 + N2 → 2 NH3, to balance the reaction, you need to equalize the number of atoms of each element on both sides. There are two nitrogen (N) atoms on the right side, so we need to place a 3 in front of N2 to balance the equation. This means there will be six hydrogen (H) atoms on the right side, so we need to place a 3 in front of H2 to have six hydrogen atoms on both sides. Therefore, the coefficient that should be placed in front of H2 to balance the reaction is 3.

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The coefficient to place in front of H2 to balance this reaction is 3. This ensures there are equal numbers of nitrogen and hydrogen atoms on both sides of the equation.

The question pertains to the balancing of a chemical equation, specifically the Haber process, which is the creation of ammonia (NH3) from hydrogen (H2) and nitrogen (N2). According to the chemical equation, we can see that there are two nitrogen atoms and six hydrogen atoms on the right side (2 NH3), while on the left, we've only got two hydrogen atoms (H2) and one nitrogen atom (N2). So to balance it, we need three molecules of hydrogen (giving us 6 hydrogen atoms) per one molecule of nitrogen. Therefore, to balance the reaction, the correct coefficient to place in front of H2 is 3.

So the correctly balanced reaction will be 3 H2 + N2 ----> 2 NH3.

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The answer is A) Sulfuric Acid.

Answer: A). Sulfuric Acid

Explanation:

The sulphur dioxide is a gas which is liberated from volcanic eruption and burning of the fossil fuels. This gas reacts with the water vapors present in the atmosphere. It forms sulphuric acid in the atmosphere. It falls along with rain water. The sulphuric acid along with rain water forms acid rain.

Answer:

The correct answer is option D-the underside of the sporophyte.

Explanation:

Ferns are pteridophytes which evolved earlier than the flowering plants. They do not produce seeds and reproduce through spores.

These spores are usually present on the underside of fern leaf also called "fronds" in sporophytic structures called sori. When these spores are ripened they are released from the capsule which germinates to produce prothallus, a gametophyte from which gametes are produced.

Thus, option D-the underside of the sporophyte is the correct option.

Daubert ruiling, is a rule of evidence regarding the admissibility of expert witnesses' testimony. The expert in your scenario is not a witness.

Miranda Rights, is the right that you have to remain silent. Anything you say can and will be used against you in a court of law. You have the right to an attorney.

Ballistics rule, has to do with the calculations of the optimum rate of twist for a given bullet.

A. Frye standard is the general acceptance test is a test to determine the admissibility of scientific evidence.

Update: B. Is the answer!

I believe it is A) Frye standard

Hope this helps....

Answer:

B

Explanation:

I did it on A-pex and i did A because it's what the 1st one said and its wrong It was actually

B- To determine if one trait could affect the inheritance of another trait.

D; Each daughter cell receives its own copy of the parent cell's DNA.

it would be D hope this helps

The right answer is D. modifying, sorting, and packaging proteins prior to transport.

The Golgi apparatus is one of the organelles necessary for the production of functional proteins.

The Golgi apparatus is a eukaryotic cellular organelle.

The Golgi apparatus is a transit and reservoir for proteins and lipids made in the endoplasmic reticulum. This is part of the network of internal membranes that have put in place to transport macromolecules.

In particular, it makes it possible to add post-translational modifications to the newly synthesized proteins.

Answer:

An example of indirect observation is: Using a live video to observe nesting owls.

Explanation:

Indirect observation is the way we can analyze the behavior of a specific subject by the means of recorded video, narration or register of the natural environment of the subject. It could be in the form of written text, video, audio, or even a presentation. However, they have to reflect the specific scenario and behavior of the subject. They can't be manipulated all has to be presented as the original event.

Elements in the same group in the periodic table have similar chemical properties. This is because their atoms have the same number of electrons in the highest occupied energy level. Group 1 elements are reactive metals called the alkali metals. Group 0 elements are unreactive non-metals called the noble gases.

The correct answer is: B. the lysosomes.

Lysosomes are single-membrane organelles found in eukaryotic cells. Lysosomes are specialized vesicles created in the rough endoplasmic reticulum (rER) with a variety of enzymes inside it. Their function is digestion: of the food or of the cell when it dies and that function is performed via enzymes.

The doctor's notes are translated from medical terminology to common English. Mrs. Smith is diagnosed with pancreas inflammation, swallowing difficulties, and stomach pain, with symptoms including nausea, sore throat, and headache. The doctor has ordered an abdominal MRI, blood count, restricts food and drink to clear liquids only, recommends bed rest and regular checks of vital signs.

Mrs. Smith has been admitted to the hospital diagnosed with inflammation of the pancreas (pancreatitis), difficulty swallowing (dysphagia), and stomach pain (gastralgia). Symptoms include nausea, vomiting, diarrhoea (NVD), a sore throat, and severe headache (HA). The physician has ordered an abdominal magnetic resonance imaging (MRI), a complete blood count (CBC), and no food or drink except for clear liquids (NPO except for cl liq). Vital signs have to be checked every 2 hours (VS q2h) and bedrest has been recommended (CBR). The patient will also receive intravenous (IV) fluids of normal saline 1000cc every 8 hours (N/S 1000cc q8h).

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The physician has diagnosed Mrs. Smith with pancreatitis, dysphagia, and gastralgia. She is experiencing symptoms such as nausea, vomiting, diarrhea, sore throat, and severe headache. The physician has ordered various tests and treatments to monitor her condition.

The physician's note refers to Mrs. Smith's conditions as pancreatitis, dysphagia, and gastralgia. Her symptoms include NVD (nausea, vomiting, and diarrhea), sore throat, and severe headache. The physician has ordered an abdominal MRI, CBC (complete blood count), NPO (nothing by mouth) except clear liquids, vital signs every 2 hours, and constant bed rest. Mrs. Smith is also receiving IV fluids of normal saline (N/S) at a rate of 1000cc every 8 hours.

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The plasma membrane is what allows things in and out of the cell. It has phospholipids and microvilli on it.

The plasma membrane, also known as the cell membrane, is a selective barrier that surrounds the cytoplasm of a cell, separating the cell's internal environment from the external environment. It is primarily composed of a double layer of phospholipids, which forms a lipid bilayer, with embedded proteins, cholesterol, and carbohydrates attached to some of the lipids and proteins.

Structure of the Plasma Membrane:

1. Phospholipid Bilayer: The bilayer consists of two layers of phospholipids arranged in an antiparallel fashion. Each phospholipid molecule has a hydrophilic (water-attracting) head and two hydrophobic (water-repelling) tails. The hydrophilic heads face outward, towards the aqueous environment inside and outside the cell, while the hydrophobic tails face inward, away from the water. This arrangement creates a stable barrier that is selectively permeable.

2. Membrane Proteins: These are embedded within or associated with the lipid bilayer. They can be classified into two types:

 - Integral Proteins: These are permanently anchored in the membrane and may span the entire width of the bilayer. They can function as channels, transporters, receptors, or enzymes.

 - Peripheral Proteins: These are temporarily associated with the membrane, either with the lipid bilayer or with integral proteins. They are found on the inner or outer surface of the membrane and are involved in signaling pathways or provide structural support.

3. Cholesterol: Found among the phospholipid molecules, cholesterol helps to maintain the fluidity of the membrane, making it less viscous at low temperatures and preventing it from becoming too fluid at high temperatures.

4. Carbohydrates: Attached to some lipids and proteins on the outer surface of the membrane, carbohydrates play a role in cell recognition, cell signaling, and the formation of the extracellular matrix.

Functions of the Plasma Membrane:

1. Selective Permeability: The plasma membrane allows certain substances to pass through while blocking others. Small, nonpolar molecules can diffuse across the lipid bilayer, while ions and polar molecules require the assistance of membrane proteins to cross.

2. Transport: Membrane proteins facilitate the movement of substances across the membrane either down their concentration gradient (passive transport) or against their concentration gradient (active transport).

3. Cell Recognition and Communication: Glycoproteins and glycolipids on the cell surface serve as markers that allow cells to recognize each other. This is crucial for processes such as immune response and cell signaling.

4. Signal Transduction: Membrane proteins, particularly receptors, play a key role in converting external signals into cellular responses. This process is known as signal transduction.

5. Enzymatic Activity: Some integral proteins have enzymatic functions, catalyzing reactions at the membrane surface.

6. Cell Adhesion: Certain membrane proteins mediate cell-to-cell adhesion, which is important for maintaining the structure of tissues.

7. Energy Transformation: In some cells, such as those in the mitochondria and chloroplasts, membrane proteins are involved in the conversion of energy, such as during photosynthesis and cellular respiration.

In summary, the plasma membrane is a dynamic structure that serves as a protective barrier, regulates the movement of substances into and out of the cell, and plays a critical role in cellular communication and adhesion. Membrane proteins are integral to these functions, facilitating transport, signaling, and many other cellular processes.

Cause it does not have to be followed by and believed by the theory itself.

Answer:  The cell membrane; which is "selectively permeable" .

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Bella is writing a research paper on ocean currents. The two sources she should consult will be;

1. an article published by a university or a government agency

3. an article published in 2015 and updated a week ago

Because while writing research papers we should consult authentic and latest information and resources.

Answer: 1. An article published by a university or a government agency.

3. An article published in 2015 and updated a week ago.

Explanation:

A research paper is the outcome of the research process done by a person having knowledge of the mentioned topic. It is a written document written by the author by conducting thorough observations and performing experiments.

Following are the sources she consults:

1. An article published by a university or a government agency.:

It is a reliable source of information as usually the research paper published by a government agency and university is generated by the thorough research work and examination. The information present in such articles will be authentic, useful and informative.

3. An article published in 2015 and updated a week ago. :

An article which is recently published can be considered reliable. This is because of the fact that the new information will be updated in it making the information more advance.

Answer: Energy stored in plants is transferred to humans and animals that eat them.

Biosphere is a sphere on earth where living organism forms a biotic community. It is the sum of all the ecosystems. Various life processes occurring in a biosphere are dependent on other spheres on earth that are lithosphere (rocks), hydrosphere (water) and atmosphere (air). In biosphere living beings interact and fulfill their energy requirements.

Energy stored in plants is transferred to humans and animals that eat them here only biosphere is involved. As, energy produced by plants which is a living component of the ecosystem through photosynthesis is transferred to other living components of the ecosystem that are humans and animals. Therefore, only one sphere is involved in this process.

Answer:

The correct option is d. Energy stored in plants is transferred to humans and animals that eat them

Explanation:

Hello!

We will answer that!

We can divide the ecosystem into different parts: hydrosphere, it is the part that contains water; the atmosphere is the part that is the air; the lithosphere is the part that has the rocks; The biosphere is the earth and where the living beings are.

In the ecosystem, all parts coexist, help each other and connect.

Let's analyze all the options:

Plant roots take in water from the soil: in this option two parts act, the biosphere and the hydrosphere

Plants take in carbon dioxide from the air: in this option two parts act, the biosphere and the atmosphere

During photosynthesis, plants make food and release oxygen into the air: in this option two parts act, the biosphere and the atmosphere

Energy stored in plants is transferred to humans and animals that eat them: in this option they act only a part that is the biosphere

After the analysis, we conclude that the correct option is d. Energy stored in plants is transferred to humans and animals that eat them

convex lens

A convex lens is thinner at the edges and thicker towards the center.

It spreads light rays apart producing an image smaller than the actual object. Nearsighted people (people who see close objects fine but distant objects appear blurry) have concave lenses in their glasses to correct their vision.

Convex lens is the right answer since it is thicker in the center while concave is thinner in the center