please i want the answer and explanation , explanation is needed​

Answer:

The right answer is C) open fully

A stomate consists of two kidney-shaped stomal cells (guard cell) that delimit the stoma or ostiole orifice. The latter opens more or less, depending on the needs, depending on the turgor of the stomatal cells.

When the guard cells are turgid, the thinner and more flexible outer wall expands more than the thicker and stiffer inner wall. The cells curl and the ostiole opens.

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Explanation:

Answer:

A

Explanation:

Glucose is used which is the chemical energy, then his muscle moves which is the mechanical energy

When a skateboarder makes jump the energy transformed in chemical energy in from his food is transformed into mechanical energy.  Thus,option A is correct.

The transfer of energy takes place in three ways radiation, conduction, and convention.

The term energy transfer shows the changes in energy  that occur in and between organism within ecosystem.

When skateboarder jump it's energy transformed from potential energy to kinetic energy and thermal energy. The skateboarder has gravitational potential energy to going down the rap. Moving to ice skates have kinetic energy, which is known as energy of motion and then transformed to thermal energy due to friction.

The used glucose in the process is chemical energy and movement of muscle during skating is mechanical energy.

Therefore, when a skateboarder makes jump the energy transformed in chemical energy in from his food is transformed into mechanical energy.  Thus, option A is

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B.  The Sun is only one of billions of stars in the galaxy, many of which are very similar to the Sun.

Explanation:

The sun is only one of the billions of stars in the galaxy, many of which are very similar to the sun.

The sun is the only star in the solar system which is made up the planets, their satellites and other planetary bodies.

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Answer:

B.

The Sun is only one of billions of stars in the galaxy, many of which are very similar to the Sun.

Explanation:

Our galaxy is made up of billions of stars, one of which is our Sun. These differ greatly in size, and our Sun is considered to be a medium-sized star. There are many stars similar to our Sun and many more that are either smaller or larger than our Sun.

Answer:

Pollen and spores (paleopalynology)

Explanation:

Fossil pollen and spores are proxy to past vegetation: Paleobotanists use fossil pollen and spores as a proxy to study the extinct plant's species, their complex vegetation patterns, and links to the past climate in the geological time scale. This study is well-recognized as paleopalynology.

Why pollen and spores are preserved as fossils: Both pollen and spores can be preserved and fossilized in the old rocks because they are made up of an extremely resistant organic material known as sporopollenin. Its presence even doesn't allow the complete degradation of the organic material inside in thousands of years.

Answer:

Pollen and spores

Explanation:

hope this helps!

Answer:

It helps insure the survival of a species in a whole.

Explanation:

Allows different species, for example dolphins or meerkats, to mate and ensure survival in their habitats.

Answer:

The nurse should administer 2 ml each day

Explanation:

According to the prescription, 12 mg of betamethasone should be given daily for three days.

The prescription also says that betamethasone comes in 6 mg/mL per vial. Therefore, to give 12 mg of betamethasone, 2 vials (each vial having 1 ml) of betamethasone must be administered by the nurse.

Answer:

Newspaper is the most reliable source of information to make a claim valid.

Explanation:

A newspaper is always considered as the authenticated source of information. A news that is published in a newspaper is always regarded as a valid news because it is published from a government authorised and renowned newspaper publishing house. For example, if we want to claim a certificate or an authorisation, it will be considered acceptable if we publish it in a newspaper. So it is the most reliable information source to make a valid claim.

Answer: The correct answer is a journal ( B )

Explanation:

The reason is because a journal is a first hand source. First hand sources are known to be the most reliable. Meaning that this information was at some point written because of an experience or study!

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Answer:

Photosynthesis and cellular respiration are complementary processes because the reactants of one are products of the other, and vice versa.

Explanation:

Complementary processes are like opposite processes. Take a look at the equations for each:

Photosynthesis:

carbon dioxide + water + (light) energy => oxygen + sugar

Cellular respiration:

sugar + oxygen => carbon dioxide + water + (ATP) energy

Written as a word equation, it is easier to see that they are basically backwards. The main difference is that photosynthesis uses light energy and cellular respiration produces ATP energy, but both are energy in general.

Photosynthesis and respiration are two complementary processes. This is because the products of photosynthesis are used during the respiration process, and the products of respiration are used in photosynthesis.

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Let us analyze the relationship and differences between the two processes.    

• Photosynthesis occurs in chloroplasts, while respiration occurs in mitochondria.

• The photosynthetic process needs solar radiation to produce organic compounds.

        The respiration process uses these organic compounds to obtain chemical energy.

• Photosynthesis transforms CO₂ into organic compounds, while respiration transforms organic compounds into CO₂.

• In the process of photosynthesis, it occurs a release of oxygen.

       Oxygen is then used during the respiration process.  

• Both processes are part of the carbon biological cycle.

• Both processes use electron transport chains to capture energy, which will be used in other cellular reactions.

• Respiration´s final products are CO₂, ATP, and water

• Photosynthesis´s final products are carbohydrates, oxygen, ATP, and NADPH.

These relationships can be established between cells of autotroph and heterotroph organisms.  

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Answer:

C. factories

Explanation:

Factories release several gases and waste thata re toxic to the environment and considered pollutants.

Answer:

Biosphere

Explanation:

The biosphere is the collection of all biotic (living) factors of an area and the abiotic (nonliving) factors of an area.

Answer:

bioshere

Explanation:

bioshere im not gonna give u an explanan

Answer:

"phosphate, ribose, adenine" could be a DNA nucleotide

Explanation:

They are built up of the molecules known as nucleotide. Every nucleotide has a sugar group ,a nitrogen base and  a phosphate group in it. For such type of nitrogen are present. The order of  bases are determined by the genetic code or the instruction they are carrying with them. The DNA are generally found in the nucleus present in the brain. It has the total control of the body. It also keeps a record of the genetic information.  

Answer and Explanation:

What do animals receive from each parent?

chromosome

Animals receive a copy of each chromosome from each parent, however, only one copy develops a characteristic called a trait. Hereditary characteristics are passed from parents to their offspring through distinct units called genes. These are found in cellular structures called chromosomes.

Higher glucose concentrations usually lead to more ATP being produced due to more fuel for cellular respiration. However, actual ATP levels depend on various factors, including the cell's energy needs and current ATP and ADP concentrations. A feedback mechanism also exists to prevent overproduction of ATP when it's already abundant.

The relationship between the concentration of glucose in the culture medium and the ATP concentration in cells is quite direct and can be understood through biological processes involved in cellular energy production. Glucose is the primary energy source for cells, and it is broken down through a process known as glycolysis to produce ATP, the energy currency of the cell.

As glucose concentration increases in the culture medium, more glucose is available for uptake by cells. This glucose is moved down a concentration gradient into the cell through facilitated diffusion using carrier protein channels. Inside the cell, glucose is broken down by glycolysis, transferring some of the energy in glucose to ADP to form ATP. Thus, an increased glucose concentration typically leads to increased ATP production, as there is more fuel for cellular respiration.

However, it's important to note a feedback mechanism in which high ATP levels can inhibit further ATP production, thereby preventing wasteful use of resources when ATP is already in abundant supply. In contrast, increased levels of ADP compared to ATP can trigger the cell to produce more ATP through glucose catabolism. Therefore, while a higher glucose concentration generally enables greater ATP production, actual ATP levels in cells depend on multiple factors, including the cell's energy needs and existing ATP and ADP levels.

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Answer:

The correct option is A) Living things respond to their environment.

Explanation:

All living things tend to respond to the environment in some way or the other. When any change arises in the environment, it acts as a stimulus for the organism. A response is generated by the organism by detecting this stimulus.  For example, the weather is an environmental condition. When the weather becomes unfavourable for birds, they fly o the south where the weather conditions are better so that they can protect themselves from the excessive cold weathers. Such practices allow organisms to survive on the Earth.

The correct option is A) Living things respond to their environment.

The following information should be considered:

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Answer: one cells or many cells

Explanation: that organism made up of one cells are called unicellular and organism made up of two or more than are called as multicellular organisms

for e.g unicellular organism are amoeba

multicellular are plants fungi and animals

All organisms are made up of cells. They can either be unicellular, (only one cell), or multicellular, (many cells). There are no organisms that exist without cells.

The correct answer to this question is D. one cell or many cells. By definition, all living organisms are composed of cells. Some organisms, like bacteria or amoebas, consist of only a single cell, and they're termed as unicellular organisms. On the other hand, organisms like plants, animals, and humans, are made up of many cells, which means they are multicellular organisms. It's important to note as well that no living organism exists without cells, given that the cell is the smallest unit of life.

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Answer:

Following are two characteristics of mitochondria and chloroplast that are similar to prokaryotic cells:

Explanation:

Endosymbiotic Theory:

The endosymbiotic theory helps explain the origins of multi-cellular organisms. An endosymbiont is defined as an organism that lives inside another organism in a state of "endosynmbiosis." The theory states that some of cellular organelles were originally separate prokaryotic organisms engulfed by an amoeba like organism. These engulfed prokaryotes sustained inside the amoeba and evolved into present day mitochondria and chloroplasts.

Apart from the aforementioned similarities, mitochondria and chloroplasts are roughly the same size as a prokaryotic cell and can self replicate by binary fission.

Answer:

The density- independent limiting factors that can affect a population include food, predation, toxic waste and environmental disasters.

Explanation:

Density independent factors like natural calamities which include volcanic eruptions, hurricane, floods, earthquake, etc are not influenced by population density change. For example, the current rampaging bush fire in Australia has caused a lot of damage to different animal and plant species. Many populations of species have become endangered and others are wiped off.

The quality of nutrients available in an environment affect the growth of organisms in it. The lower the quality of nutrients, the higher is the environmental stress. E.g in Lake Erie, the growth of algae was restricted due to the extensive presence of phosphorus in the water bodies.

Pollution is also a big reason for decrease in the density of populations. E.g Amphibians such as toad, frog are susceptible to pesticides which flow into the water bodies. It reduces their ability to reproduce and inhibits their growth.

When the number of predators in a given area increase, the population of prey decreases. Extensive predation can lead to the extinction of prey species.

Answer:

The plasma membrane is responsible for maintaing B: homeostasis

Answer: b. Homeostasis

Answer:

Genetic engineering can be used to produce plants that are resistant to herbicide. One herbicide works by preventing the activity of an enzyme.

Explanation:

Some most important freshwater lakes and rivers in Georgia include Lake Lanier, Lake Allatoona, Lake Hartwell, and the Chattahoochee River.

"Some of the major freshwater lakes and rivers in Georgia include:

1. Lake Lanier (officially known as Lake Sidney Lanier) - It is one of the largest lakes in Georgia, located on the Chattahoochee River.

2. Lake Allatoona - A U.S. Army Corps of Engineers lake on the Etowah River in the northwestern part of the state.

3. Lake Hartwell - A man-made reservoir bordering Georgia and South Carolina on the Savannah, Tugaloo, and Seneca Rivers.

4. Lake Oconee - A reservoir located in central Georgia on the Oconee River.

5. Lake Sinclair - A man-made lake on the Oconee River in central Georgia, downstream from Lake Oconee.

6. West Point Lake - Another U.S. Army Corps of Engineers project that straddles the Georgia-Alabama border, located on the Chattahoochee River.

Rivers:

1. Chattahoochee River - Originating in the Blue Ridge Mountains, it flows southwest through Atlanta and forms the southern part of the Alabama-Georgia border.

2. Savannah River - Forming the border between Georgia and South Carolina, it flows southeast to the Atlantic Ocean.

3. Ocmulgee River - It begins in the central part of the state and flows south to Macon, where it joins the Oconee River to form the Altamaha River.

4. Oconee River - It flows south from Hall County and joins the Ocmulgee River to form the Altamaha River.

5. Altamaha River - One of the major rivers in Georgia, it is formed by the confluence of the Ocmulgee and Oconee rivers and flows to the Atlantic Ocean.

6. Etowah River - It flows through the northwestern part of the state and is a tributary of the Coosa River.

 These bodies of water are important for the state's ecosystem, economy, and recreational activities. They provide sources of drinking water, support agriculture, and offer opportunities for boating, fishing, and other outdoor recreational pursuits."

Explanation:

The NEPA short form of  the National Environmental Policy Act came into force on 1st January 1970. NEPA needs the federal agencies to evaluate the environmental effects of their suggested actions before making any kind of judgments. The array of activities that comes under NEPA is wide and comprises:  

1. Adopting federal land management activities,  

2. Making decisions on permit applications, and

3. Constructing highways and other publicly-owned facilities.  

With the application of NEPA, the agencies access the environmental and associated economic and social influences of their suggested actions.  

Answer:

The answer is "Solute molecules move across a cell membrane from areas of higher concentration to areas of lower concentration."

Explanation:

Simple diffusion specifically involves the movement of (small, uncharged) solutes across a cell membrane. Since diffusion is part of the passive transport umbrella, it also requires no energy since the solutes move down the concentration gradient - from areas of high concentration to areas of low concentration.

Hope that helps! :)

Solute molecules move across a membrane from areas of higher concentration to lower concentration is called diffusion. Therefore, option A is correct.

A chemical diffuses when it moves from one location of high concentration to another area of lower concentration. When gas and liquid particles randomly collide and disperse, diffusion takes place.

Diffusion aids in the flow of materials into and out of cells. Until the concentration is the same everywhere, the molecules travel from a region of higher concentration to an area of lower concentration. Diffusion occurs in gases and liquids because random molecular movement is a possibility.

Diffusion is the process by which solute molecules travel across a cell membrane from regions of higher concentration to regions of lower concentration. Therefore, option A is correct.

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Answer:

directing the synthesis of proteins necessary for proper cell function.

Explanation:

The nucleic acids include DNA and RNA. The instructions on DNA are transcribed into messenger RNA. Ribosomes are able to read the genetic information inscribed on a strand of messenger RNA and use this information to string amino acids together into a protein thus nucleic acids directs the synthesis of proteins necessary for proper cell function.

Final answer:

Prokaryotes predate eukaryotes according to the endosymbiotic theory which posits that eukaryotic cells evolved from prokaryotic cells forming symbiotic relationships. This theory is supported by the presence of prokaryote-like DNA in organelles like mitochondria and chloroplasts and fossil evidence that suggests prokaryotes were already present on Earth billions of years before eukaryotes evolved.

Explanation:

Scientists believe that prokaryotes existed earlier than eukaryotes based on the endosymbiotic theory, which suggests that eukaryotic cells evolved from a symbiotic relationship between two or more prokaryotic cells. This is further supported by mitochondria and chloroplasts having their own DNA similar to free-living prokaryotes and features such as double membranes and genes that are more closely related to those found in prokaryotes. According to the endosymbiotic theory, these organelles were once independent prokaryotic organisms that became permanent residents within larger host cells, leading to the evolution of eukaryotes. As eukaryotic cells are now known to possess complex internal structures and organelles, which presumably evolved through these endosymbiotic events, it is logical to infer that simpler prokaryotic cells predated them. The first eukaryotic cells are thought to have evolved about 2 billion years ago, much later in Earth's history compared to the ancient lineage of prokaryotes.

Answer:

Energy

Explanation:

In the perspective of common people , almost all changes that we make need some sort of energy in order for it to happen. Even the simple ones.

(For example, When you want to turn on the lamp, you need to spend energy to push your finger down and press the switch.  When you wants to change your bed covers, you need to spend energy to walk down to the cabinet , take out the bed covers, and spend another energy during the removal and set up of the bed cover.)

Energy can be expressed using or Newton* meter as units, mean that you do a certain amount of work(Newton) over a distance (meter) and The ability to conserve or energy like food will be expressed as Joule(J).

Answer:

The Correct Answer is A

Broader categories based on genetic links

Explanation:

Answer:

The Empire of Great Britain had a "global power," which was also known as a "superpower" concerning resources, influences and geopolitical landscapes.

Explanation:

When it comes to international relations, the power of a country or a nation is very important. It is an inherent goal that many people want. It can be used in many situations such as cooperating with other countries, coercing people to follow a rule, securing the nation and developing the nation, etc.

The Empire of Great Britain was considered, together with USA and the Soviet Union, to have a "superpower." Only the strongest nation possess such power. It was able to control millions of people, which then resulted into a great expansion. The reason behind this is that they had a stricter rule than other nations and people followed it. This made them stronger and while they continued expanding, they were able to acquire more resources.

Answer:

Nervous tissue- sends signal from brain and body

Muscle tissue- allow shivering to produce heat to maintain body temperature

epithelial tissue- protects skin from bacteria and other particles

connective tissue- provides structural support for the organs

Explanation:

Nervous tissue contains nerves, spinal cord, and brain. Neurons in nervous tissue is responsible for receiving and stimulus from the body and sending signal from the brain and body.

Skeletal muscles are involved in the shivering during the cold. In shivering involuntary contraction of skeletal muscle occurs when body temperatures goes down which generates heat and rise the body temperature.

Epithelial tissue coves the body surface and do not allow any bacteria and other microbes or chemicals to enter the penetrate it and enter in the body. So epithelial tissue plays a role in protection.  

Connective tissue provides structural support for the organs like bone and cartilage provide structural support to the soft tissue of the body and provide strength to the body.

The human body contains four main types of tissues- epithelial, connective, muscle, and nervous. Each of them performs unique functions to ensure the health and functioning of the body. Epithelial tissue forms the body’s linings, connective tissue provides support, muscle tissue enables movement, and nervous tissue facilitates communication.

The human body consists of four main types of tissues: epithelial tissue, connective tissue, muscle tissue, and nervous tissue. Each of these tissues performs unique and specific functions.

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Answer:

a PH value represents how acidic or basic a solution is.

to answer your question a PH of 7.2 means it is neutral. anything 6 and below means its basic and anything above 8 means its acidic. 7 means its neutral

If a solution has a pH of 7.2, it is a base. 7 on the pH scale is neutral like water. If you go to the left you have your acids which turn litmus paper red. Acids are generally sour, and they release HCl. On the other hand, bases are to the right. They turn litmus paper blue. They are more bitter. They release -OH. The values on the pH scale represent how acidic or basic somethin is. Hope this helps.

Three properties that interact to produce weather are water pressure, air pressure, and latitudinal location.

Explanation:

Throughout the year we experience different types of weather conditions, and these conditions can be influenced by three main factors.

• Water cycle or water pressure: When sun rays falls on earth, the water from lakes and oceans turns into water vapor which in turn forms clouds and comes back into the form of rain.

• Air masses: It so happens that the air pressure is determined by the temperature above which it moves. For example: if it is above the area which experience snow then air mass will be cold and dry, similarly on hot areas it will be warm thus giving rise to different climatic conditions.

• The latitudinal location: The temperature mostly depends on its latitudinal location.