The luminous reactions begin when light reaches photosystem II. The water molecules provide electrons to the photosystem, releasing oxygen and protons. The letter A represents photosystem II that splits water.
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1. Luminous energy is trapped by chlorophyll in Photosystem II.
2. When the pigment molecules absorb light, electrons provided by water molecules get in a higher energy level.
3. The excited electrons go through the electron transport chain from Photosystem II to a less energetic level in photosystem I.
4. When the excited electrons leave photosystem II, they are replaced by new electrons extracted from the water molecules.
5. Luminous energy absorbed move the electrons from the photosystem I to another electron acceptor, from where they get transported again and used to produce NADPH molecules.
6. When electrons leave Photosystem I, they are replaced by new electrons coming from photosystem II.
7. When the water molecule breaks down, hydrogen ions remain in the thylakoid lumen, from where they are pumped to the stroma by the ATP synthase.
8. The released energy is used to produce ATP molecules.
9. Hydrogen ions go back from the stroma to the thylakoid compartment.
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describe a chemical reaction
Answer:
The chemical reactions is a process in which one or more substances, the reactants, are converted to one or more different substances, the products.
Explanation:
.
Answer:
A chemical reaction is a process in which the reactants are converted into one or more different substances. A chemical reaction occurs when certain bonds between the atoms are formed or broken. The substances that are formed at the end of the reaction are called products.
Hope this helps! :)
refers to the attitudes, behavior, and activities that are socially defined as appropriate for each sex and are learned through the socialization process. OA) Sexual role B) Gender identity OC) Gender role D) Sexual identity
Answer:
Gender Role
Explanation:
How people already see how people should act. Example- Be a man.
Answer:
b. sex
Explanation:
edge 2021
Somebody please help? Thanks
Answer:
None
Explanation:
because y is recessive and it needs to be yy to be green so Yy wouldn't wrok
what is a similarity of an ecosystem and a habitat
Answer:
Habitat and ecosystem are two ecological terms.Both include living organisms. Organisms live in both systems.Hope this helps!
Answer:
Both include living organisms. Organisms live in both systems
Explanation:
Answered by NONE other than the #QUEEN herself aka #DRIPPQUEENMO
HOPED THIS HELPED!!
Tropical rainforests have the greatest biodiversity of any type of land ecosystem how does biodiversity contribute to the sustainability of an ecosystem
Biodiversity contributes to the sustainability of an ecosystem in ways such as biodiversity, ecosystem stability, ecosystem resilience, nutrient cycling, pollination, and medicinal properties.
Biodiversity is crucial for the sustainability of an ecosystem as it plays a significant role in maintaining the functioning of ecosystems and providing a range of ecological services. In tropical rainforests, which have the highest biodiversity, the presence of numerous species of plants, animals, fungi, and microorganisms contributes to the sustainability of the ecosystem in the following ways:
Ecosystem Stability: Biodiversity helps to maintain the stability of an ecosystem by providing a balance between predator and prey populations, nutrient cycling, and decomposition.
Ecosystem Resilience: The greater the biodiversity of an ecosystem, the more resilient it is to disturbances such as climate change, natural disasters, and human activities.
Nutrient Cycling: Biodiversity helps in the efficient cycling of nutrients in the ecosystem. Different species of plants and microorganisms play a role in decomposing organic matter, recycling nutrients, and maintaining soil fertility.
In summary, biodiversity is essential for the sustainability of ecosystems. It provides ecological services that are critical for maintaining the functioning of the ecosystem and contributing to human well-being.
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The pancreas secretes enzymes and bicarbonate into the a. esophagus c. duodenum e. ileum b. stomach d. jejunum
Answer:
C. Duodenum
Explanation:
hope this helps!
the answer should be the duodenum
what is the term for the process of cell division that results in the formation of gametes ?
Answer:
meiosis
Explanation:
What hormone carries out hydrolysis? Explain.
Answer:
the HGH hormone
Explanation:
Why is the success of a mutation dependent on environmental conditions?
PLEASE HELP QUICK!!!
Create a food chain with a producer and 3 consumers.
Answer: dandelion is consumed by bees, grasshoppers, and butterflies.
Answer:
primary consumers, secondary consumers, tertiary consumers.
Explanation:
Hope this helps
A moon has less mass than a star and more mass than a planet it orbits.
•True
•False
The probability that an “X” bearing egg will be fertilized by a “Y” bearing sperm is?
Answer:
100%
Explanation:
The different forms of the beef cattle color gene are called_
The different forms of the beef cattle color gene are called "alleles"
What are alleles?Alleles are alternative versions of a gene that arise from mutations and are located at the same position on a chromosome.
In the case of beef cattle, the color of the animal is determined by the interaction of multiple genes, including the color gene. The color gene can have different alleles that influence the color of the animal's coat. For example, one allele may result in a black coat color, while another allele may result in a red coat color.
The combination of alleles that an animal inherits from its parents determines its genotype, which in turn determines its phenotype or observed traits. Therefore, the different alleles of the beef cattle color gene can result in different coat colors, patterns, and markings in the cattle population.
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Write your explanation of the role of genetics in Natural and Artificial Selection. Write on how environmental factors affect the survival based on Natural and Artificial Selection.
What was the result of the Reconstruction Amendments (the Thirteenth, fourteenth, and fifthteenth Amendments)?
Slavery was abolished and voting rights were extended to all male citizens. The Thirteenth Amendment (ratified in 1865) abolished slavery. The Fifteenth Amendment (ratified in 1870) extended the voting right to all male citizens without discrimination in terms of race, color, or previous servitude.
What is the process of the digestive system?
Answer:
In terms of processes: ingestion, motility, mechanical digestion, chemical digestion, absorption, and defecation.
In terms of pathway: Mouth, throat, esophagus, stomach, small intestine, large intestine, rectum, and finally the anus.
Plz HELP!! where does respiration, the process of releasing energy from combination of oxygen and glucose, occur? A. Cells B. Bronchi. C. Pharynx. D. Nose
Answer:
A
Explanation:
please help asap
Summarize how atmospheric pollution affects living organisms and the environment by completing the chart below:
Answer:
humans- exposes them to the ultra-violet rays of the sun causing cancer
animals- causes the pollution of gases found within the atmosphere
plants- polluted atmosphere contains poisonous gases that pour down as acid rains causing soil pollution and depletion on nutrients for plants
Environment- causes global warming
Trees in a temperate deciduous forest compete for all of the following EXCEPT -
A sunlight.
B shelter.
C soil.
D water.
Answer:
B
Explanation:
Trees needs sun, soil (nutrients), and water to grow and become strong.
I hope this helps ^-^
The weight of astronaut on the moon will be
A) Less because the moon has less mass
B) Less because the moon has more mass
C) More because the moon has less mass
D) More because the moon has more mass
Answer:
A
Explanation:
The gravity of a body increases with its size. The moon is smaller than the Earth, so an astronaut will weigh less on the moon than they will on Earth. Good luck ^^
Explanation:
A because im big brain
What does the phrase of sunshine and of song mean in the poem?
A.
memories
B.
weather
C.
happiness
D.
singing
Answer:
a
Explanation:
correct answer gets brainiest. and i’m telling u. if u guess or leave a link, ur getting reported and that’s not a threat
Ms. B has 32 students assigned to her class. Her room only holds 28 students. The other 4 need to go to the officer for a schedule change-
Northern pike (a fish) feed on another fish, the yellow perch. An increase in the yellow perch population causes an increase in the pike population-
The BP oil spill in the Gulf of Mexico has harmed many aquatic organisms that live in the Gulf region-
A new strain of influenza breaks out in New York City-
The population of rabbits and a population of deer are both feeding off the same plants in the same area-
Hurricane Katrina forced thousands of people to leave New Orleans-
65 million years ago, a large asteroid collided with the Earth. As a result, large amounts of ash were ejected into Earth's atmosphere.
Answer choices: Density Dependent
Density Independent
Answer:
Density Dependent
Explanation:
i think hope it helps
Question C. please... :) And NO FILES I WILL REPORT YOU!
Help please :) thank u
Answer:
!! neither mechanical nor chemical digestion
true or false
Only animals have a niche.
Answer:
False
Explanation:
Answer:
True
Explanation:
which type of specialized cells would be found in an animal’s neuvous system?
The type of specialized cells would be found in an animal’s nervous system are the cells that transmit signals around the body. The correct option is D.
What is the nervous system?The nervous system is the part of an animal's body that controls behavior and sends messages to other parts of the body. It is divided into two components in vertebrates: the central nervous system (CNS) and the peripheral nervous system. The CNS houses the brain and the spinal cord.
Neurons are specialized cells found in animals. These cells are classified as sensory neurons, interneurons, or motor neurons based on their function. They transmit signals from the body to the brain and from the brain to the body parts.
Therefore, the correct option is D. Cells that can transmit signals around the body.
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The question is incomplete. Your most probably complete question is given below:
Cells that transport oxygen are found in the blood.
Cells that secrete hormones to trigger cellular responses.
Cells secrete enzymes to break down food.
Cells that can transmit signals around the body.
6. Why does the study of cell membranes lead to a better understanding of cell function?
a. All cell functions occur in the cell membrane.
b. All energy transfers occur at the cell membrane.
C. All cell membranes contain the information for making proteins.
d. All materials needed for cell functions must pass through the cell membrane.
Answer: d. All materials needed for cell functions must pass through the cell membrane. brainliest?
Explanation:
What are the characteristics of vitamins and minerals? (Select 3)
A.They are gained by the body by eating.
B.They are produced inside the body.
C.They help the body get energy.
D.They help your immune system fight disease.
Answer:
.
Explanation:
Explanation: Open Photo ;)
In fruit flies, the allele for normal-sized wings (W) is dominant to the allele for small wings (w). A fly that has normal wings breeds with a fly that has small wings. Several offspring have small wings, and others have normal wings.
A. What are the genotypes of the 2 parental flies?
Normal wings __________
small wings __________
B. Two flies with small wings produce offspring. What type of wings will the offspring
have? Draw a punnett square to support your answer.
C. A short winged fly can be described -using words as what?
D. What type of inheritance is this called?
Answer:
A. Normal Wings= Ww, Small Wings=ww
B. All offspring will have short wings because short wings trait is recessive.
w. w
______
w| ww |ww|
————-
w|ww |ww |
______
Explanation: