in the first phase of photosynthesis a series of reactions converts light energy into atp and nadph these reactions are referred to as
Answers
In the first phase of photosynthesis a series of reactions converts light energy into atp and nadph these reactions are referred to as light-dependent reactions.
By converting light energy into chemical energy through a process called photosynthesis, plants and other living things can subsequently release that chemical energy to power their activities. Because photosynthesis is how plants use sunlight to convert carbon dioxide into oxygen, it is crucial to the health of all living things. In order for animals to survive, they need oxygen, and plants serve as nature's air filter by removing dangerous carbon dioxide.
In the presence of sunshine, light-dependent reactions take place in the chloroplasts' thylakoid membrane. During these processes, the solar energy is transformed into chemical energy. The photosystem, which is in charge of photosynthesis, receives energy from the sun through the chlorophyll in plants. The light-dependent reactions that depend on light change light energy into chemical energy.
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Related Questions
a thick band of bone forms around a broken bone as it heals.in time,the thickend band dissapears.explain how this extra bone can disappear over time
Answers
Answer: Explain how this extra bone can disappear over time. This extra band of bone probably disappears over time due to the action of osteoclasts. Osteoclasts are responsible for breaking down bone and releasing the components of the bone (calcium and phosphorus) into the bloodstream.
Explanation:
________ is the greenhouse gas that has had the most impact on climate change and it is released into the atmosphere by __________.A. CuSO4 (copper sulfate), miningB. SO2 (sulfur dioxide), burning fossil fuelsC. NO2 (nitrogen dioxide), deforestationD. CO2 (carbon dioxide), burning fossil fuels
Answers
Carbon dioxide is the main greenhouse gas emitted by human activities. Human activities include the burning of fossil fuels such as oil (gasoline) and coal. This gas is released into the atmosphere as complete combustion of fossil fuels is achieved.
We can conclude that the correct answer is:
Answer:D. CO2 (carbon dioxide), burning fossil fuels
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A substance that influences the reaction but does not participate in the reaction is a
Mark this and return
Save and Exit
Next
Answers
Answer:
It is called a CATALYST.
A substance that has an influence on the reaction but it does not take part in the reaction is known as a catalyst.
What are the properties of a catalyst?A catalyst has an important property of selectivity which means it only catalyzes a specific reaction. Every reaction is catalyzed by a unique catalyst that is specific to that particular reaction. A catalyst usually undergoes a physical change but does not undergo a chemical change during the reaction.
A catalyst works by increasing the rate of reaction. In a chemical reaction, there is breaking and rebuilding of bonds between different atoms and molecules. This process is made easy with the help of a catalyst which lowers the activation energy and catalyzes the reaction in a smooth manner.
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Kala added a spoon of yeast and hot boiling water to knead bread dough, whereas Rupa added warm water to knead the dough with yeast in it. Both of them made bread. Whose bread will be soft? Why?
Answers
Answer:
I think Rupa's bread will come out softer than Kala's.
Explanation:
Using hot boiling water to activate yeast can kill it. Instead of being absorbed by the protein, the hot water is absorbed into the starch molecules.
It is better to use warm water to get a more fluffy bread.
Soft bread is soft because CO2 produced by yeast and water that gets turned to steam by the baking process gets trapped into pockets by a mesh of gluten, causing the dough to expand. The dough then solidifies, keeping its shape. If your bread is not soft then it hasn't expanded enough for one or more reasons.
Have a good day and stay safe!
Which of the following helps prevent erosion? (select 2 answers).
Ice
Trees
Rain
Rivers
Plants (Vegetation)
Answers
Answer:
Trees and Plants
Explanation:
3. What will likely happen to New York and Europe in the future?
Answers
Answer:
In my opinion Europe and New York would probably grow, depending on how many people join their population.
Explanation:
I say this because many people love Europe and New York that they visit many times and most people go over their to stay for good.
colchicine is a drug that can prevent chromosomes from separating during cell division and leads to the production of cells with increased chromosome number. assuming that all other aspects of gamete growth and maturation are not impacted and you are working with an organism with two sets of homologous chromosomes that are not identical, what is the most likely outcome of exposing cells to colchicine during meiosis ii?
Answers
Exposing cells to colchicine during meiosis II would most likely result in the production of cells with an abnormal number of chromosomes, also known as aneuploidy.
This is because colchicine prevents the separation of chromosomes during cell division, leading to the formation of cells with more than the normal number of chromosomes. Additionally, if the organism has two sets of homologous chromosomes that are not identical, the colchicine would cause a random assortment of chromosomes, resulting in the formation of cells with various abnormal chromosome numbers. Meiosis is a type of cell division that occurs in organisms that sexually reproduce. The process of meiosis reduces the number of chromosomes in the parent cell by half, creating four genetically diverse daughter cells, called haploid cells.
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4. Some groups of organisms move from colder climates to warmer climates at
certain points of the year. This behavior is known as
A. adaptation
B. reproduction
C. migration
D. hibernation
Answers
humans have hundreds of different g-protein coupled receptors. while these receptors all have distinct amino acid sequences, they all have in common:
Answers
humans have hundreds of different g-protein-coupled receptors. while these receptors all have distinct amino acid sequences, they all have in common: guanine nucleotide exchange activity
What is guanine nucleotide?
Guanine nucleotide exchange factors (GEFs) are proteins or protein domains that stimulate the release of guanosine diphosphate (GDP) to enable the binding of guanosine triphosphate, hence activating monomeric GTPases (GTP). It has been demonstrated that guanine nucleotide exchange activity occurs in a number of unrelated structural domains. While some GEFs are exclusive to a particular GTPase, others can activate numerous GTPases.
Small GTPases are activated by proteins or protein domains known as guanine nucleotide exchange factors (GEFs). In intracellular signaling pathways, small GTPases function as molecular switches and have a wide range of downstream destinations. The Ras superfamily of GTPases, which is made up of the most well-known GTPases, is crucial for key cellular functions such cell division and proliferation, cytoskeletal structure, vesicle trafficking, and nuclear transport. GTPases can have their activity controlled by GEFs and the opposing GTPase activating proteins because they are active when bound to GTP and inactive when attached to GDP (GAPs)
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Which action would be completed by skeletal muscle tissue 1.moving blood
2.increasing the heartbeat, or 3. kicking a soccer ball
Answers
Answer:
Kicking a soccer ball
Explanation:
Answer:
Kicking a soccer ball
Explanation:because moving blood and having a heartbeat arent in need of a skeletal system
The secondary ossification center in a long bone is located in the:.
Answers
Answer:
epiphyses
Explanation:
A fall outbreak of influenza caused many absences at work and school. health department officials sent out warnings to use precautions when coughing and to wash hands thoroughly. which members of the population are a primary concern?
Answers
During an outbreak of influenza, the members of the population are a primary concern are individuals with respiratory diseases as well as the aged.
What is influenza?Influenza refers to a viral disease condition which affects the respiratory system.
Influenza viruses are also sometimes called flu viruses.
During outbreaks of influenza such as the COVID-19, individuals with respiratory diseases as well as the aged in the population are most at risk of infection.
Therefore, the members of the population are a primary concern are individuals with respiratory diseases as well as the aged.
In conclusion, influenza are diseases which affect the respiratory system.
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Which elements do hydrogen fuel cells combine to produce electricity?
A. hydrogen and oxygen
B. hydrogen and carbon
C. hydrogen, oxygen, and nitrogen
D. hydrogen, carbon, and nitrogen
PLEASE HELP
Answers
Answer:
A) hydrogen and oxygen
they produce fuel cells because they form water which can be used to form electricity and are used in car batteries and stored for later use
The teeth that are best adapted for biting off hunks of food are the
Answers
Incisors are the sharp-edged teeth located at the front of the mouth, and they are well adapted for biting off hunks of food. The correct answer is A. incisors.
They have a chisel-like shape that allows them to cut through food, making them ideal for biting and cutting tasks. Incisors are typically used for grasping, cutting, and tearing food, such as fruits, vegetables, and meat, into smaller pieces that can be easily managed by the other teeth during chewing and swallowing.
Canines (B) are the pointed teeth located on either side of the incisors and are typically adapted for tearing and holding food. Bicuspids (C), also known as premolars, and molars (D) are teeth located towards the back of the mouth and are adapted for grinding and crushing food. While they play important roles in the chewing process, incisors are the teeth that are best adapted for biting off hunks of food.
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Complete Question
The teeth that are best adapted for biting off hunks of food are the
A. incisors.
B. canines.
C. bicuspids.
D. molars.
100 points!!!!!!
According to the National
Institute of Health, ventricular tachycardia is a fast, regular beating of the ventricles that may last for only a few seconds or for much longer. A few beats of ventricular tachycardia often doesn't cause
problems. However, episodes that last for more than a few seconds can be dangerous. Ventricular tachycardia can turn into other, more serious arrhythmias, such as ventricular fibrillation.
Based on the passage above, how will prolonged ventricular tachycardia affect blood pressure?
O It will increase blood pressure because the ventricles are contracting with more force.
O It will increase blood pressure because the ventricles are filling with more blood between beats.
O It will decrease blood pressure because there is a longer rest period beats of the ventricles.
O It will decrease blood pressure because the ventricles are filling with less blood between beats.
Answers
Answer:
It will decrease blood pressure because the ventricles are filling with less blood between beats.
Explanation:
In ventricular tachycardia, the heart beats faster than normal, usually 100 or ... The chaotic heartbeats prevent the heart chambers from properly filling with blood. As a result, your heart may not be able to pump enough blood to your body
Answer:
It will decrease blood pressure because there is a longer rest period beats of the ventricles.
Explanation:
You can read more about Ventricular Tachycardia here: https://www.pennmedicine.org/for-patients-and-visitors/patient-information/conditions-treated-a-to-z/ventricular-tachycardia
how is energy lost in a food chain?
Answers
Answer:
90
Explanation:
Not all the energy is passed from one level of the food chain to the next. About 90 per cent of energy may be lost as heat (released during respiration), through movement, or in materials that the consumer does not digest. The energy stored in undigested materials can be transferred to decomposers.
Answer:
Energy can be lost in a multitude of ways in a food chain. 90% of energy is usually lost either in the form of heat, through movement while using energy, or materials that are not entirely consumed by the consumer.
Explanation:
Only about 10% of energy is retained after a consumer eats a lower level on the food chain. Further explained, heat is released during respiration, which is essentially energy being lost.
Animals also have metabolism and growth, which require energy of their own. So, not all energy in a food chain can be retained for the animals to use.
What are the results of a covalent bond
Answers
Answer: Shared Electrons
Explanation:
It happens between atoms.
.In organisms such as the chick, in which the egg has extensive yolk, the egg
A. shows complete cleavage.
B. shows incomplete cleavage.
C. forms a blastoderm but no blastocoel.
D. shows even distribution of the yolk.
E. fails to synthesize DNA during cleavage.
Answers
In organisms like the chick, where the egg contains extensive yolk, the egg exhibits incomplete cleavage (option B). Incomplete cleavage occurs because the yolk is concentrated in a specific region of the egg called the vegetal pole, while the animal pole contains less yolk.
The presence of the yolk hinders the complete division of the egg during cleavage, resulting in the partial separation of cells.
This process leads to the formation of a structure called the blastoderm, which is a thin layer of cells covering the yolk (option C). However, due to incomplete cleavage, a blastocoel, which is the fluid-filled cavity usually found in a blastula, does not form in these organisms.
The distribution of yolk in the egg is not even (option D), as it is concentrated more towards the vegetal pole, causing the aforementioned incomplete cleavage. Lastly, the egg does not fail to synthesize DNA during cleavage (option E); DNA synthesis is essential for cell division and the development of the embryo.
In conclusion, chick eggs with extensive yolk show incomplete cleavage and form a blastoderm, but no blastocoel, due to the uneven distribution of yolk within the egg.
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What gene was used as a genetic marker to identify the chromosomal location for LOH in Rb cases
Answers
The gene commonly used as a genetic marker to identify the chromosomal location for loss of heterozygosity (LOH) in retinoblastoma (Rb) cases is the RB1 gene itself.
Retinoblastoma is a rare form of eye cancer that can be caused by mutations in the RB1 gene located on chromosome 13. LOH refers to the loss of one copy of a gene or chromosomal region, often indicating the presence of a tumor suppressor gene in the deleted region.
In Rb cases, LOH analysis involves comparing the DNA from tumor cells with DNA from normal cells to detect any differences in the RB1 gene region. Techniques such as microsatellite analysis or single-nucleotide polymorphism (SNP) genotyping can be used to identify LOH.
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What gene was used as a genetic marker to identify the chromosomal location for LOH in Rb cases? ----
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Which part of the water cycle is a biological
process?
1. transpiration
2. runoff
3. precipitation
4. condensation
Answers
Option A " Transpiration " is the correct answer. Other all are happened due to certain conditions.
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Explain how the discoveries by Rosalind Franklin helped Watson and Crick build an accurate model of DNA.
Answers
Answer:
Rosalind's x-ray showed that the ladders of nucleotides were inside a double helix.
Watson and Crick built models with the ladders on the outside.
List the 5 Factors that influence Climate
Answers
+ elevation/altitude
+ temperature
+ distance from sea
+ latitude
Answer:
Latitude, Altitude, Winds, Distance from the sea, relief
Explanation:
a petechial rash starting on the hands and feet and spreading to the torso is characteristic of ____
A. rmsf.
B. necrotizing fasciitis.
C. anthrax.
D. smallpox.
E. herpes gladiatorum.
Answers
A. RMSF (Rocky Mountain spotted fever).
A petechial rash starting on the hands and feet and spreading to the torso is characteristic of Rocky Mountain spotted fever (RMSF). RMSF is a bacterial infection caused by the bacterium Rickettsia rickettsii, which is transmitted through tick bites. One of the prominent symptoms of RMSF is the development of a petechial rash, which appears as small red or purple spots on the skin. The rash typically begins on the wrists, ankles, and palms, and then spreads to the arms, legs, and torso. This rash is an important diagnostic feature of RMSF and distinguishes it from other conditions listed in the options (B, C, D, E) that have different characteristic rashes or symptoms.
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Bacteria in the Shigella genus cause the disease shigellosis. The symptoms of shigellosis include diarrhea, fever, and intestinal cramping. The disease is unpleasant, but most people recover within a week. Shigellosis is transmitted from one person to another through bodily wastes. You can catch shigellosis from a baby when changing its diaper. People also catch the disease by drinking contaminated water. The best way to avoid shigellosis is through frequent hand-washing with soap. Shigella bacteria can survive on a fly's body for up to 24 days. Suppose that a fly lands on waste from an infected person. That fly could then spread bacteria on everything it lands on for almost a month! How do bacteria survive for so long during harsh conditions until finding a host?
Answers
Getting Shigella on your hands and touching your mouth. Shigella can get on your hands by touching surfaces, such as toys, bathroom fixtures, changing tables, and diaper pails contaminated with Shigella bacteria from someone with an infection.
What are bacteria?Bacteria are the microorganisms that are single celled and covered with hard covering and there are several types of bacteria such as blue green bacteria, gram positive bacteria, as well as gram negative bacteria and many more types as well as classification is found.
Quorum regulation of luminescence in vibrio fischeri serves a native role in microbial quorum sensing and responds to quorum signaling molecule. Pneumococcal, meningococcal, and Haemophilus influenzae vaccinations are administered to the patients after splenectomy.
In the process of immunization a vaccine is given to the person in order to protect them against disease and to boost up the immunity.
Therefore, Getting Shigella on your hands and touching your mouth. Shigella can get on your hands by touching surfaces, such as toys, bathroom fixtures, changing tables, and diaper pails contaminated with Shigella bacteria from someone with an infection.
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Bacteria in the Shigella genus cause the disease shigellosis. The symptoms of shigellosis include diarrhea, fever, and intestinal cramping. The disease is unpleasant, but most people recover within a week. Shigellosis is transmitted from one person to another through bodily wastes.
You can catch shigellosis from a baby when changing its diaper. People also catch the disease by drinking contaminated water. The best way to avoid shigellosis is through frequent hand-washing with soap. Shigella bacteria can survive on a fly's body for up to 24 days. Suppose that a fly lands on waste from an infected person. That fly could then spread bacteria on everything it lands on for almost a month! Bacteria survive for so long during harsh conditions until finding a host because they have adapted to living in extreme environments.
Some bacteria, for example, can form spores to withstand high temperatures or radiation exposure and other environmental stressors. The bacterial survival mechanism is by remaining dormant in a spore form until the suitable living conditions become available. The environment condition, for example, temperatures, nutrient availability, acidity or pH, and moisture levels can all play a part in bacterial survival.
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In mice, the allele for BROWN FUR (BB or Bb) is completely dominant over the allele for white fur (bb).
In a cross where both parents have white fur, what is the probability for the following genotypes and phenotypes? Please answer in whole numbers.
Answers
Answer:
The process of alleles, even if both are bb there is a very very low chance of it being Bb, but completely impossible of being BB.
Explanation:
The allele table is not 100% correct all the time. just most.
Use the drop-down menus to identify which
groundwater zones are labeled in the image.
Label A
Label B
Answers
Answer:
Label A: saturated zone
Label B: unsaturated zone
Explanation:
The Label A indicates the saturated zone whereas Label B indicates the unsaturated zone.
What are ground water zones?Groundwater is found in two zones. The first is unsaturated zone, present just below the land surface that contains water and air in the open pores, or the voids pores.
The second zone is saturated zone, a zone in which all the pores and rock fractures are filled with water, underlies the unsaturated zone. The top of the saturated zone is called the water table. The water table may found just below or may present hundreds feet below the land surface.
Thus, the label A and label B represents the unsaturated zone, and saturated zone of ground water respectively.
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The century cactus flowers every 100 years. A similar and nearby cactus flowers every 50 years. If the 50-year-cactus pollen has the correct characteristics to fertilize the century cactus, which reproductive barrier will most likely be working against that possibility
Answers
Answer:
Temporal isolation
Explanation:
Temporal isolation, a type of reproductive barrier caused by variations in the timing of mating receptivity, activity, or fertility, prohibits interbreeding between different but closely related species.
What is the temporal barrier in reproductive isolation?In biology, temporal isolation is a form of reproductive isolation mechanism that prevents members of closely related species from mating and creating hybrid offspring.
Temporal isolation refers to the situation where two or more species reproduce at various periods. For instance, three different types of orchids live in the same rain forest.
This mechanism arises from differences in the timing of crucial reproductive events.
Therefore, Temporal isolation reproductive barrier will most likely be working against that possibility.
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Plants respond to changes in their environment. They detect gravity, light, touch, and seasonal changes, and respond to these stimuli in many ways. Which statement best explains this flexibility in response? A) Phenotypes are controlled by one gene that codes for multiple regulatory proteins. B) The genes that regulate plant responses can be expressed in different ways. C) The genes that regulate plant responses can mutate to adjust to environmental changes. D) Phenotypes control the genotypes of individuals, determining plant responses.
Answers
Answer:
B)
Explanation:
Plants have the ability to detect the changes in their environment and respond accordingly. Plants' responses to stimuli is due to the genes that regulate plant responses can be expressed in different ways.
Genes code for hormones and support transport of hormonal synthesis in plants. Plants hormone such as auxin promotes different changes in plant growth in response to light, gravity, touch or seasonal changes and the auxin respond due to transport inhibitor response 2 gene.
Hence, the correct answer is "B".
Which pair of scientists discovered the double helix structure of DNA? A. Faraday and Maxwell B. Newcomen and Watt C. Bragg and Bragg D. Watson and Crick
Answers
Answer:
Faraday and Maxwell discovered helix structure of DNA
Answer:
Watson and Crick discovered the double helix structure.
Explanation:
This image is best described as (DNA)
