During stage I of photosynthesis, excited electrons move in which direction? Choose one:
A. from NADPH to a mobile electron carrier to the chlorophyll special pair
B. from sunlight to the chlorophyll special pair
C. from the stroma to the thylakoid membrane to the thylakoid space
D. from an electron carrier to NADP+ to ATP synthase
E. from the chlorophyll special pair to an electron carrier to NADP+
Answers
During stage I of photosynthesis, excited electrons move from sunlight to the chlorophyll special pair. The correct option is B. Photosynthesis is a process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.
The process of photosynthesis is divided into two stages: the light-dependent reactions and the light-independent reactions. In stage I, also called the light-dependent reactions, the following events occur: The chlorophyll special pair is excited by sunlight.
Electrons are excited and move to higher energy levels. Excited electrons move from sunlight to the chlorophyll special pair. Electrons move from the chlorophyll special pair to an electron carrier, which is then passed on to NADPH. Water molecules are split into hydrogen ions (H+) and oxygen.
Electrons are also released during this process and passed on to the chlorophyll special pair. These events lead to the production of ATP (adenosine triphosphate) and NADPH.
ATP and NADPH are used in the light-independent reactions (stage II) to synthesize glucose and other sugars.
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Related Questions
Which statement BEST describes the difference between chemotherapy and biological therapy?
Biological therapy is all natural therapy, where chemotherapy uses harsh toxins.
Biological therapy is involves radiation; chemotherapy involves drugs.
Chemotherapy targets the cell directly; biological therapy tries to help the immune system so it will attack the cancer cells.
Chemotherapy is given over an extended period of time, where biological therapy is given only once.
Answers
Answer:
Chemotherapy targets the cell directly; biological therapy tries to help the immune system so it will attack the cancer cells.
Explanation:
Both chemotherapy and biological therapy are approaches used in cancer treatment.
Chemotherapy involves the use of aggressive anti-cancer drugs. It targets cancer cells directly with the goal to destroy them.
Biological therapy, also called immunotherapy, is a type of treatment used in battling diseases by activating or suppressing the immune system. It is also used in cancer treatment. Its goal is to boost the immune system and help it fight against cancer.
Select all of the special adaptations that a cactus has in order to survive in the desert.
Tough exterior
smooth outer covering
it can store water
it eats other plants
Answers
Answer:Though exterior and it can store water
Explanation:
A cactus needs water to survive and it needs its tough exterior to prevent from other animals eating it.
What macromolecules can be found in animal cells
and
What macromolecules can be found in plant cells
Answers
Answer:
ANIMALS: There are four major classes of biological macromolecules (carbohydrates, lipids, proteins, and nucleic acids), and each is an important component of the cell and performs a wide array of functions. Combined, these molecules make up the majority of a cell's mass.
PLANTS: The three main classes of macromolecules found in plants are thus proteins, polysaccharides and nucleic acids. However, mixed polymers are also known. such as the glycoproteins, which contain both sugars and amino acids in covalent linkage.
The macromolecules found in animal cells are carbohydrates, proteins, lipids, nucleic acids, and water. Each of these macromolecules has specific functions in the body of kingdom Animalia.
What are Macromolecules?Macromolecules may be defined as a molecule that contains a very large number of atoms that are held together by specific bonds.
The macromolecules found in animal cells are polysaccharides, proteins, nucleic acids, water, and some types of mixed polymers.
All such macromolecules perform specific functions in the structure of kingdom Plantae and meet the need for metabolic activities.
Therefore, it is well described above.
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-3. Proteins are made where in the cell?
Answers
hope this helps :)
Which of the following is NOT a prezygotic barrier to interbreeding between different species?
a) biochemical factors prevent the sperm of one species from fertilizing the egg of the other species
b) two species have sufficient physical differences that cause them to be unable to mate
c) hybrids between the two species are infertile
d) two species have different courtship rituals
e) two species lie in areas so far from each other that they never meet
Answers
Hybrids between the two species are infertile is not a prezygotic barrier to interbreeding between different species, option (c) is correct.
Prezygotic barriers are factors that prevent the fertilization of an egg and sperm from different species, and they can be categorized as either pre-mating or post-mating barriers. Options (a), (b), (d), and (e) describe pre-mating barriers that prevent mating or fertilization between individuals of different species.
For example, biochemical factors such as differences in sperm and egg surface proteins can prevent successful fertilization, and physical differences such as incompatible genitalia can prevent successful mating. Different courtship rituals can also prevent successful mating, and geographical isolation can prevent individuals from different species from coming into contact with each other, option (c) is correct.
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When it says "bunnies have taken over the world" this is an
extreme example of overpopulation. What is more likely to happen
in the real world if there is a huge population of bunnies?
Answers
In the real world, if there is a huge population of bunnies, it is more likely that they will face competition for resources, such as food and habitat.
This could lead to increased fighting and aggression among the bunnies, and possibly even a decline in their overall health and reproductive success. Additionally, predators may become more attracted to areas with high bunny populations, which could result in a decrease in the bunny population over time.
Overall, while the idea of bunnies taking over the world is a humorous and extreme example of overpopulation, the reality of overpopulation in any species is much more complex and can have serious consequences for the survival and well-being of the animals involved.
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The image shows an energy pyramid for a grassland ecosystem.
Photo Showing the Energy pyramid of Grassland ecosystem. With the apex consumer at the top, followed by the secondary consumer, primary consumer, and producers at the Bottom.
The apex consumer level of this ecosystem contains between 500 and 1000 kilograms of biomass. Which statement best describes the amount of biomass at the level of the primary producers?
A.
less than 50 kilograms, because producers contain less than ten percent of the biomass of apex consumers
B.
between 50 and 500 kilograms, because apex consumers have a moderately greater biomass than producers have
C.
between 500 and 1000 kilograms, because there are similar amounts of biomass at the producer and apex consumer levels of an ecosystem
D.
much larger than 1000 kilograms, because a very high biomass of producers is required to support a smaller biomass of apex consumers
Answers
For apex consumers' biomass to range from 500 to 1000 kilograms, the food chain's producers must have significantly larger biomass than that of 1000 kilograms.
Which of the following best sums up the biomass production at the level of primary producers? Energy is transmitted from one organism to another when they consume other species.Only 10% of the available energy is transferred to species at the next higher trophic level, according to the 10% law of energy transfer.The apex or top consumer in this scenario has 500–1000 kg of biomass.The producers in the food chain must have significantly more biomass than 1000 kilograms in order to support the 500 to 1000 kilograms of biomass at the apex consumers.This is so that energy can be transferred from one trophic level to another without losing the majority of it as heat.To learn more about biomass refer
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Most of the matter in space is in a fourth state of matter called _____, which is high-energy matter consisting of positively and negatively charged particles.
A. plasma
B. state
C. matter
D. liquid
Answers
Answer:
dark matter
......................
Onepage review on why understanding gas and vapors in a work setting is important and what we can do in our workplace to prevent accidents with gases and vapors.
Answers
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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You want to study the relationship between daily alcohol consumption and prostate-specific antigen levels. It was suggested that these two parameters have a linear relationship and as you increase your alcohol consumption your prostate-specific antigen level increases. What kind of a linear model would represent this relationship?
Answers
The kind of linear model that would represent this relationship is a positive linear model.
In a positive linear model, as the independent variable (alcohol consumption) increases, the dependent variable (prostate-specific antigen levels) also increases in a linear fashion. This implies that there is a positive correlation between the two variables, suggesting that higher alcohol consumption is associated with higher levels of prostate-specific antigen.
A linear model represents a straight-line relationship between the variables, and in this case, it would show a positive slope. The slope of the line indicates the rate at which the prostate-specific antigen levels increase with each unit increase in alcohol consumption.
By studying this relationship, researchers can gain insights into the impact of alcohol consumption on prostate-specific antigen levels and potentially understand the association between alcohol and prostate health.
However, it is important to note that further research and analysis are necessary to establish a causal relationship and consider other factors that may influence prostate-specific antigen levels.
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This very important component of the heart's conduction system is located in the posterior wall of the right atrium, near the entrance of the superior vena cava:
Answers
The sinoatrial node is very important component of the heart's conduction system that situated close to the site of superior vena cava connection on the posterior wall of the right atrium (SA node). The SA node, which is made up of autorhythmic cells, acts as the heart's "pacemaker" by producing the action potentials that cause contraction to begin.
What is sinoatrial node or important component of the heart's conduction system?The SA node, which is made up of autorhythmic cells, acts as the heart's "pacemaker" by producing the action potentials that cause contraction to begin. Bachman's bundle, a unique band of swiftly conducting tissue that quickly transmits the action potential to the left atrium, is hypothesised to help the two atria contract concurrently.
The atrioventricular node (AV node), which is situated in the right atrium's floor close to the interatrial septum, senses the action potential. The internodal pathways are once again specialised conduction routes that swiftly transfer the action potentials from the SA node to the AV node. The action potential is then "delayed" by the AV node for around 0.15 seconds, enabling the atria to contract before the ventricles.
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Cougar cubs have fur with spots that are the same color as the forest floor. How does this adaptation help the cougar cubs survive?
They become more aware of any forest predators trying to hunt them.
They can blend in with the forest floor, making it harder for predators to spot them.
They can look colorful to attract and prey on other animals.
They can run faster, protecting themselves from predators.
Answers
Answer:
The adaptation of having fur with spots that are the same color as the forest floor helps cougar cubs to blend in with their environment, making it harder for predators to spot them. Therefore, the answer is "They can blend in with the forest floor, making it harder for predators to spot them."
Answer: Option (B) is correct They can blend in with the forest floor, making it harder for predators to spot them.
Explanation: Hope it helps!
Good luck!!!
Which term describes a single female arctic The group of polar bears that live along the eastern coast of Russia makes upfox?
Answers
The term that describes a single female arctic fox is a vixen.
A vixen is a female fox, including the arctic fox, that is not pregnant or nursing young. It belongs to the Canidae family and is found in the tundra and other Arctic regions of the Northern Hemisphere.The Arctic fox is a small, compact, and sturdy mammal that can survive in some of the world's harshest environments.
The population of Arctic foxes that lives along the eastern coast of Russia is not referred to as a group of polar bears. It is known as a population, a community, or a family.A population is a group of animals of the same species that live in the same area and interact with one another.
A family of arctic foxes is made up of a male and female adult and their offspring. They live together in underground dens that are used for shelter and protection.Arctic foxes are considered a keystone species in the Arctic region because they play a crucial role in the ecosystem. They feed on small animals like lemmings and voles, which helps to regulate their populations. In addition, they are a food source for larger predators like wolves and polar bears, which helps to maintain balance in the food web.
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A researcher investigated two types of diffusion: simple diffusion and facilitated diffusion. If particles move through the cell membrane by simple diffusion, the rate is unlimited. If particles move through the cell membrane by facilitated diffusion, then the rate is limited by number of protein channels. The results are shown in the graph above. The independent variable is the -
Answers
Unfortunately, there is no graph attached to your question. Please provide more information or attach the graph so I can better answer your question.
What is a membrane ?A membrane is a thin, selective barrier that separates two phases or compartments in a system. In biology, membranes are essential components of cells and organelles, which serve to protect and regulate the internal environment of the cell, while also facilitating the exchange of materials with the external environment.
What is a cell ?A cell is the basic unit of life and the smallest unit of an organism that can carry out all the functions of life. All living organisms, whether they are unicellular composed of a single cell or multicellular (composed of many cells, are made up of cells.
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William found out that bacteria live in oil. Which tatement bet decribe the function of bacteria and their impact on oil
Answers
The function of bacteria and their impact on oil can be best described by: (4) Bacteria help increase fertility by decomposing organic matter in the soil.
Bacteria are the prokaryotic organisms that are present everywhere on the Earth. These are single-celled organisms that can be useful as well s harmful for the other living beings. The examples of bacteria are: Salmonella, Bacillus, E. coli, etc.
Organic matter is the large macromolecular carbon based compound that is found in all the living organisms. In fact the feces and waste produced by the living organism is also an organic matter. The bacteria solubilize these organic matter into smaller soluble forms.
The given question is incomplete, the complete question is:
William found out that bacteria live in soil. Which statement best describe the function of bacteria and their impact on soil ?
Bacteria help increase fertility by decomposing organic matter in the soil.Bacteria help increase fertility by loosening soil for root growth.Bacteria reduce fertility by breaking down minerals in the soil.Bacteria reduce fertility by stripping the soil of nutrients.To know more about organic matter, here
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Is the elephant shrew more closely related to the elephant or the shrew?
How do we know?
Why are elephant shrews and shrews so similar?
Answers
The response to all the above questions on if the elephant shrew more closely related to the elephant or the shrew are given below.
In reality, elephant shrews are not shrews. Recent research indicates that they are more closely connected to an African mammal clade that includes elephants, sea cows, and aardvarks. The Macroscelididae, which consists of four genera and 19 extant species, is the only family that includes elephant shrews (also known as sengis).Are shrews and moles closely related to elephant shrews?Elephant shrews, also known as sengis, are not closely related to shrews, despite what their name might imply, nor are they rodents. Instead, they are distantly linked to elephants and belong to the Macroscelidea family, which is separate from that of shrews.
Note that Elephant shrews are tiny, hairy creatures with large ears that resemble gerbils or gigantic mice. They are not actually shrews, despite their name, and they are not rodents, despite their look. Moles and tenrecs are the closest relatives of elephant shrews.
Therefore, one can say that despite having a long snout and similar exterior features to mice, shrews are not rodents like mice. In actuality, it is far more closely related to hedgehogs and moles; the only thing shrews have in common with rodents is that they are both members of the Boreoeutheria magnorder.
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which cell parts are responsible for moving proteins?
Answers
use the diagram to come up with YOUR OWN DEFINITION of nondisjunction
Answers
Answer:
The sister chromosome looks like it fails to completely split, so that shows the daughter chromosome not having either of the chromosomes
Explanation:
What is the process by which green plants use sunlight to convert carbon dioxide and water into glucose and oxygen?
Answers
Answer: Photosynthesis
Explanation:
The rate at which particular type of cell divides is linked to the body‘s needs for that type of cell skin cells are typically exposed to more damaging conditions and liver cells skin cells must be replaced more often in liver cells therefore which of these statements is true
Answers
Answer:
Skin cells divide more often than liver cells
Explanation:
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if the genetic code consisted of four bases per codon rather than three, the maximum number of unique amino acids that could be encoded would be:
Answers
The maximum number of unique amino acids that could be encoded would be 253 if n the genetic code consisted of four bases per codon rather than three.
A codon could be a DNA or RNA sequence of three nucleotides that shapes a unit of genomic data encoding a specific amino acid or signaling the end of protein synthesis (stop signals). There are 64 different codons 61 are the specify amino acids and 3 are utilized as stop signals.For the genetic code consisting of four bases per codon, there will be four nucleotides such as A, T, G, and C, so the number of codons possible will be: 4^4=256, now since we are given that stop codons are the same will 256-3= 253 which is the total number of the possible number of the codon of unique amino acids
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Where did the scientists who contributed to our scientific knowledge live?
Answers
Assignment
kelove
Explaining the Roles of Decomposers in the Carbon Cycle
Which statements accurately desbe the voles of decomes in the carton code Select three coton
Decomposers release carbon dioxide into the air as waste
Decomposers remove carbon dioride from the air during dhatosthesis
Decomposers break down the remains of dead plants and animals,
Decomposers return cartoon compounds to the so
Decomposets Use carton to make food decistes
Answers
Answer:
the decomposer can break down a bad air that can make everyone fell sicl
Definition: This is the structure in the cell nucleus that houses a celo's genetic information
Answers
Answer:
Explanation:
This is the the theory that describes protein building in this order: DNA to RNA to protein. Protein is never back-translated to RNA or DNA; DNA is never directly translated to protein. Chromosome. This is the structure in the cell nucleus that houses a cell's genetic information.
Which process is a squeezing motion of the circular layer of smooth muscle in the small intestine?
Answers
Segmentation is a squeezing motion of the circular layer of smooth muscle in the small intestine.
What is segmentation in the small intestine?
Segmentation, which mostly affects the small intestine, is made up of localized contractions of the Gastro-Intestinal tract's circular muscle. These contractions separate out little portions of the intestine, allowing their contents to move back and forth while being continuously divided, broken up, and mixed.
Our intestines' circular muscles contract during segmentation to churn food back and forth, rather like a washing machine. This churning helps break down food into tiny bits for digestion by allowing it to mix with gastric secretions in the intestines. By bringing chyme into contact with the intestinal walls during segmentation, the technique also helps to increase absorption.
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When released from the ovary, the human egg contains how many chromosomes?
A
One Y chromosome
B
One X chromosome
C
two X chromosomes
D
XY chromosomes
Answers
Answer:
B) One X chromosome.
Explanation:
When released from the ovary during ovulation, the human egg, or ovum, contains a single set of chromosomes. In the case of a female, the egg will always contain one X chromosome. This is because females have a sex chromosome pairing of XX, and the egg carries one of those X chromosomes. The presence of the Y chromosome is necessary for the development of a male individual.
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c) Describe the phenotype ratio for their offspring. (2 points)
Answers
IM BEING TIME I need the answer please :(
Answers
Answer:
D
Explanation:
As organic materials age up they add up in a horizontal manner from the oldest to the youngest
Answer:
Hey!
Your answer is D!
Explanation:
As we move down on the layers, the age now INCREASES!
So the rock on the top of the rest, IS THE YOUNGEST!!
Hope this helps!
Were the bacteria which infected Addie on the
playground alive? Explain your reasoning,
Answers
Answer:
Yes.
Explanation:
Bacteria are the simplest of creatures that are considered alive. Bacteria are everywhere. They are in the bread you eat, the soil that plants grow in, and even inside of you. They are very simple cells that fall under the heading prokaryotic. You don't usually get infected by dead bacteria, because They get recycled. Unlike larger organisms, when single-celled organisms die, they usually undergo a process called lysis, in which the cell membrane disintegrates.
A major impact that humans have on the pedosphere is through urbanization. Which of the statements about urbanization is true?
A. It decreases the average temperature of the area.
B. It helps prevent flooding in populated areas.
C. It results in cleaner water in lakes, ponds, and streams
D. It cause loss of habitat for many types of animals.
Answers
Answer:
A ,it decreases the average temperature of the area