Which best summarizes the effects of mutations on organisms?

A Mutations are sometimes helpful, sometimes harmful, and sometimes neutral.

B Mutations are usually harmful, sometimes neutral, and never helpful.

C Mutations are sometimes neutral, sometimes helpful, and never harmful.


D Mutations are always harmful, never helpful, and never neutral.​

Answer:

¨ For instance, strong covalent bonds hold together the chemical building blocks that make up a strand of DNA. However, weaker hydrogen bonds hold together the two strands of the DNA double helix. These weak bonds keep the DNA stable, but also allow it to be opened up for copying and use by the cell.¨

Explanation:

Answer:

answer is d.

Explanation:

i dont know answer

The BEST statement describing the difference between ringworm and other zoonotic diseases such as plague or SARS is:

Ringworm is not life-threatening, whereas most others are.

Ringworm is a fungal infection of the skin, hair, or nails that can be transmitted from animals to humans. While it can be uncomfortable and unsightly, it is not generally a serious or life-threatening condition. On the other hand, diseases like plague and SARS are highly contagious and can be deadly if left untreated.

Plague is caused by a bacterium that is typically spread by fleas from infected rodents, while SARS is caused by a virus that can be transmitted from animals to humans, with bats and civet cats being the suspected reservoirs. Both diseases can cause severe respiratory symptoms and can be fatal in some cases.

Molecules composed of a small oligosaccharide covalently linked to a phospholipid are called: Glycolipids

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Answer:

Some metals such as steel, galvalume, and galvanized roofing materials are prone to rust when exposed to moisture. Preventing rust is understandably a big concern for homeowners considering metal roofing

Some metals such as steel, galvalume, and galvanized roofing materials are prone to rust when exposed to moisture.

Iron that has been covered in a layer of zinc to assist the metal resist corrosion is known as galvanized iron. Galvanizing steel is another option.

Metal is frequently galvanized before use to ensure that it can survive environments where corrosion is likely to occur. However, corrosion will ultimately commence, even with galvanization, especially in acidic environments.

Galvanized iron can be produced using one of two main methods. The most popular method is hot-dip galvanization, which involves passing the iron through a bath of molten zinc that is extremely hot and, depending on the situation, may also contain a tiny quantity of lead.

Therefore, Some metals such as steel, galvalume, and galvanized roofing materials are prone to rust when exposed to moisture.

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The primary pathogen associated with most cases of cervical cancer is the human papillomavirus (HPV).

What is human papillomavirus ?

A sexually transmitted infection called HPV has the potential to alter cervix cells over time, eventually resulting in cervical cancer. According to estimates, HPV is to blame for the majority of cervical cancer cases globally.

Although there are many distinct kinds of HPV, cervical cancer is most frequently linked to a few high-risk strains, particularly HPV types 16 and 18.

Therefore, The primary pathogen associated with most cases of cervical cancer is the human papillomavirus (HPV)

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Answer:

Usually the radius of the arc is equal to about one-fourth of the visible sky, or 42 degrees, to the red. When there are showers nearby, simply look in the part of the sky opposite the sun at a 42-degree angle from your shadow; if there is a rainbow, that is where it will be.

                                                                  or

behind your back

hope this helps

have a good day :)

Explanation:

Answer: your shadow is likely to be at the back side of your legs.

Explanation: hope it helped

The relative concentrations of ATP and ADP control the cellular rates of metabolic processes.

Cellular respiration is the process that produces ATP in living organisms. It is the biochemical pathway that releases energy stored in food molecules and uses it to produce ATP from ADP and inorganic phosphate. The energy released in cellular respiration is used to power the activities of the cell.

The relative concentrations of ATP and ADP control the cellular rates of metabolic processes. ATP inhibits the rate of ATP-forming processes while it stimulates the rate of ATP-consuming processes. ADP, on the other hand, stimulates the rate of ATP-forming processes while it inhibits the rate of ATP-consuming processes. Therefore, a cell with higher ATP concentration will tend to consume ATP and produce ADP while a cell with higher ADP concentration will produce ATP.

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Answer:

Cell

Explanation:

That is the smallest you can go to from the intestine with the choices provided.

Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.

In a plant cell, photosynthesis and cellular respiration can both take place simultaneously. Plants carry out both photosynthesis and cellular respiration during the day. Cellular respiration continues because it provides the energy required for essential cell functions.

Water and carbon dioxide are changed into oxygen and glucose during photosynthesis. The plant consumes glucose and produces oxygen as a byproduct.

Oxygen and glucose are transformed into water and carbon dioxide during cellular respiration. By-products of the process include carbon dioxide, water, and ATP, which is turned into energy.

To power cellular respiration, photosynthesis uses the energy it produces. During photosynthesis, solar energy is used, collected, and stored in the bonds of glucose molecules.

Therefore, photosynthesis and respiration not involve energy formation cycle.

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The statement "Most nutrients are absorbed through the mucosa of the intestinal villi by active transport" is true because the mucosa of the small intestine is specialized for nutrient absorption.

The intestinal villi, which are finger-like projections on the surface of the small intestine, increase the surface area available for absorption. Active transport is the primary mechanism by which nutrients are absorbed across the mucosa of the villi.

This process requires the expenditure of energy and involves the use of specialized transport proteins to move nutrients against their concentration gradients. Active transport allows for the absorption of a wide range of nutrients, including carbohydrates, proteins, fats, vitamins, and minerals, and ensures that the body receives the nutrients it needs to function properly, the statement is true.

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When the nerve cell is said to be resting, it means that the cell is polarized, the outside is positive and the inside is negative.

What is a nerve cell? A nerve cell, also known as a neuron, is an electrically excitable cell in the nervous system that communicates with other cells through specialized connections called synapses. A nerve cell is the structural and functional unit of the nervous system in charge of carrying electrical impulses throughout the body.

What is polarization?Polarization is a term used to describe the separation of electrical charges across a cell membrane. A resting nerve cell is polarized, indicating that the electrical charge of the cell's interior is negative in comparison to the charge of the cell's exterior. The inside of the cell is negative in comparison to the outside, so the resting potential is negative. During resting, the membrane potential of a nerve cell ranges from -60 to -70 mV.

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Understanding gas and vapours in a work setting is incredibly important for workplace safety. Gas and vapours can contain noxious substances that, if exposed to, can lead to serious injury or health implications.

In order to prevent such accidents, employers must perform risk assessments in order to assess and identify any areas of risk and put in place control measures to limit them. If gas and vapours are used onsite, then suitable ventilation and extraction systems should be in place.

Employers should also ensure that their staff are aware of the potential risks associated with such substances and provide adequate training and instruction in how to work safely. Finally, employers should also check that any necessary personal protective equipment is provided and communications are in place to be able to notify relevant emergancy responders in case of an accident.

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To deliver oxygen to the body, the respiratory system collaborates closely with the circulatory system. The tissues and cells in the body receive the oxygen-rich blood that is expelled by the respiratory system through the blood vessels.

A crucial role of the circulatory system is gas exchange between the blood and tissues.

Blood takes up oxygen and exhales carbon dioxide in the lungs of humans, other mammals, and birds.

The respiratory and circulatory systems, whose jobs it is to breathe in oxygen and expel carbon dioxide, cooperate.

Therefore,  the respiratory and circulatory systems, whose jobs it is to breathe in oxygen and expel carbon dioxide, cooperate.

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Answer: Destructive Force: Weathering

The process of breaking down rocks and land is due to forces such as gravity, wind, water, and ice. When it rains, rocks are washed down a mountain or down a stream. Soils are washed away. The ocean beats against a cliff and breaks it apart. Destructive Forces: processes that destroy landforms.

Ex. landslides, volcanic eruptions, earthquakes, floods.

Explanation: Research

Autotrophs would be affected because plant ferredoxin-NADP+ reductase (FNR) gets electrons from Fd at the end of the photosynthetic electron transfer chain and converts NADP+ to NADPH.

This enzyme is a member of the oxidoreductase family, which transfers electrons using iron-sulfur proteins as the electron donor and either NAD+ or NADP+ as the electron acceptor. This enzyme is involved in the process of photosynthesis. Photosynthetic organisms rely heavily on FNR as their primary source of the molecule NADPH.

In plants, an enzyme known as ferredoxin-NADP+ reductase (FNR) is located at the end of the photosynthetic electron transfer chain. This enzyme accepts electrons from ferredoxin (Fd) and converts NADP+ to NADPH.

Therefore, if NADP+ is inhibited, photosynthesis will be affected eventually impacting autotrophs.

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The Volume and Surface area cannot be related because there can be structures with same volume but different surface areas.

The surface area of a solid object is a measure of the total area that the surface of the object occupies.

Moreover, the surface area of a three dimensional shape is the total area of all of the faces. To find the surface area of a shape, we find the area of each face and add them together.

The surface area of an object is the total area of the outside surfaces of the three-dimensional object i.e, the total sum of the area of the faces of the object. It is measured in terms of square units.

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Answer:The owl got energy from producers, like plants

I am sorry if I'm wrong.

Explanation:

Answer:

ate consumers

Explanation:

owls eat rodents and other small animals which eat producers

The process which involves the vesicles migrating to and fusing with the cell membrane to secrete the enzymes outside the cell is referred to as Exocytosis and is denoted as option D.

This is a term which is a form of active transport in which a cell transports molecules out of the cell and involves the input of energy which is usually in the form of ATP.

In this scenario, the vesicle migrates and fuses with the cell membrane, allowing its contents to be released outside the cell which is therefore the reason why Exocytosis was chosen as the correct choice.

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Answer:

A

Explanation:

The only answer that makes sense is A. Her hypothesis could've been wrong, for starters. That does NOT mean she's a bad scientist or should she come up with an excuse on why the results didn't support it. The best way to go about it would be either repeating the experiment multiple times and then changing one variable and testing that too.

Answer:

5 g/cm²

Explanation:

Density = Mass/Volume = 20/4 = 5

Therefore, the density of the mineral is 5 g/cm². (Assuming those are the proper units).

Explanation:

d =mass/volume

d=20/4 =5

Answer:

1.DNA is more than 99% similar between any two people. All the differences in how we look, feel, behave and the differences in our health are due to less than 1% difference

2.In humans each of these cells have 2 copies of the DNA, but in strawberries each of these have 8 copies of the DNA that means strawberries have 4 times as many copies of DNA as humans, making it 4 times easier to see.

Explanation:

Yes, many species of fungi are limited to specific habitats.

Hence, certain species of fungi can be limited to a specific habitat and understanding the habitat type and the characteristics of the pre-dominant fungi can be useful in separating the genera.

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Answer:

Lol

Explanation:

I can't see any option mate. How will I be able to know what to answer

Answer:

srry can u explain a little more?

but if this is a trick question red leaves????

Explanation:

A tendon is a fibrous connective tissue which attaches muscle to bone. Tendons may also attach muscles to structures such as the eyeball. A tendon serves to move the bone or structure. A ligament is a fibrous connective tissue which attaches bone to bone, and usually serves to hold structures together and keep them stable.

A tendon is a fibrous connective tissue which attaches muscle to bone.

A ligament is a fibrous connective tissue which attaches bone to bone.

What is tendons and its function?

A tendon is a cord of strong, flexible tissue, similar to a rope. Tendons connect your muscles to your bones. Tendons let us move our limbs. They also help prevent muscle injury by absorbing some of the impact your muscles take when you run, jump or do other movements.

What is ligament and its function?

Ligaments often connect two bones together, particularly in the joints: Like strong, firmly attached straps or ropes, they stabilize the joint or hold the ends of two bones together. This ensures that the bones in the joint don't twist too much or move too far apart and become dislocated.

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