after light excites electrons and they leave photosystem ii to travel down the first electron transport chain. how are these electrons replaced to photosytem ii

Answers

Answer 1

Answer:

They are replaced by water splitting

Explanation:


Related Questions

explain the significance of chemical digestion!! marking brainliest please help

Answers

Answer:

Chemical digestion is a vital part of the digestive process. Without it, your body wouldn't be able to absorb nutrients from the foods you eat. While mechanical digestion involves physical movements, such as chewing and muscle contractions, chemical digestion uses enzymes to break down food.

how much blood is filtered by the kidneys each day?

Answers

Answer:

Many times a day, your blood circulates through your kidneys.

Explanation:

Approximately 170 liters per day and 7 liters per hour. About 150 quarts of blood are filtered by your kidneys in a single day relavent to 44 gallons. The tubules are responsible for returning water and other substances to your blood following their filtering through your glomeruli. Approximately one or two quarts of the water becomes urine.  

Jumana relocated to Canada after the civil war in Syria displaced her family. After many years of odd jobs, she opened a small shop that sells homemade sweets and imported textiles from the Middle East. She rents her storefront in a building owned by her uncle, who has lived in Canada for nearly 30 years. Business is good and she can consistently pay her bills on time, but she hopes it will get better so that she can invest and one day buy a house.

Requried:
What statements BEST describes Jumana's situation?

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Answer:

jumana leave her country to Canada for a better life

Jumana came to Canada for better life and buy new house for herself.

What is situation?

Situation is defined as the circumstances and collection of events that are present at a specific time and location. Situation can be used to refer to what is happening to you personally or broadly to what is happening at a specific location and time. Briefly describe the issue or task you managed, providing pertinent information as necessary. Action: Describe the steps you took to finish your assignment or find a solution.

Many immigrants from throughout the world live in Canada. Canada continues to draw a lot of immigrants due to its stunning natural surroundings, vast open areas, mountains, trees, and lakes. a free society with a Charter of Rights and Freedoms that outlines fundamental human rights.

Thus, Jumana came to Canada for better life and buy new house for herself.

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definition of tissue​

Answers

The group of similar cells which work together to perform a particular function is called a tissue....

You may take help from the attachment....

Insect are classified into how many main group ?​

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Answer: 3 Sub classes wingless insects known as apterygota and winged insects known as pterygota

Explanation:

The rapid activation of bodily systems to cope with a stressor and restore homeostasis is part of the _____ load model.

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allostatic load model! :)

Which of the following is a structure of the lower respiratory tract?

Answers

Answer:

c. Bronchioles

Explanation: is correct. post protected

Darwin's opinion that living forms must be descended from extinct forms was most closely related to his consideration of ___.

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Darwin's opinion that living forms must be descended from extinct forms was most closely related to his consideration of the fossil record.

Polysaccharides, triglycerides, and proteins are similar in that they?
a) all contain nitrogen in other monomer building blocks
b) are decomposed into their subunits by dehydration reactions
c) are synthesized from subunits by dehydration reactions
d) are synthesized from monomers by the process of hydrolysis

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Answer:

d

Explanation:

po ang tamang sagon po

When a muscle tears away from a tendon or a tendon tears away from a bone it is known as a(n) ________.

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Avulsion. I hope that helps.

Observa el mapa de las fallas tectónicas de la Hispaniola y luego escribe las instrucciones

Porfa díganlo. rapido

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Answer:

El 14 de agosto de 2021, un terremoto de magnitud 7,2 sacudió Haití. El terremoto más grande en la región desde 2010, el desastre dejó al menos 2,000 personas muertas, 12,000 personas heridas y casi 53,000 casas destruidas.

Which statement about the specific immune response is FALSE?
Each T or B cell has antigen receptors for only one specific antigen.
T and B cells recognize antigens by using antibodies bound to their surface membranes.
Unique antigen receptors are created by genetic recombination.
Antigens must be presented by an MHC molecule for T and B cells to recognize them.
All cells express MHC-I molecules, but only antigen-presenting cells express MHC-II molecules.

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Statement b is incorrect because the B cells are the only ones that produce antibodies which does apply for the T cells

Which of the following is a good way to prevent tonsillitis?

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Answer:

d. All of the above

Explanation: is correct and post protected

state one reason why the movement of molecules in method C represents active transport.

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Answer:

Because molecules are moving from an area of low concentration to an area of higher concentration and thats require energy

Why do the hydrogen ions and the hydroxide ions form bonds to make macromolecules?

Pick One of the Following:
A. They both have protons that attract to each other.
B. They each have an electrical charge that attracts to each other.
C. They both have electrons that attract to each other.

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Answer:

A i think

Explanation:

True or false: The size and complexity of organisms is directly related to the number of total chromosomes it has. If false, make it a correct statement

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I think the answer to this is true, but I'm not really for sure

The area around the Sahara Desert is slowly changing into a dry region, similar to the desert. Which trait is most likely to be selected in the population of plants growing in this region?

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Answer:

Researchers have found that mitochondria and chloroplasts in eukaryotic cells have their own dna. this dna is different from the dna in a eukaryotic cell's nucleus. chloroplasts and mitochondria use their own dna and ribosomes to make some organelle-specific proteinswhat statement is best supported by this information? a. mitochondria and chloroplasts could exist outside of modern cells.b. modern cells could exist without mitochondria and chloroplasts.c. early eukaryotic cells engulfed prokaryotic cells, which later became mitochondria and chloroplasts.d. early prokaryotic cells engulfed eukaryotic cells, which later became mitochondria and chloroplasts.

Explanation:

Frederick Griffith made a scientific discovery in 1928. which best describes the knowledge about genetics before 1928?

Answers

Answer:

Scientists did not know how traits were inherited.

Explanation:

Carol and Sam were using the microscope in science class. They used a dropper to put some pond water on their microscope slide. This is what they saw. "That is something living," said Sam. "I don't think so," said Carol. What do you think? Explain. Question 13 options: This is not alive. It is not moving or responding. This sample is made of identical units. It is not alive. This is a multicellular organism made of cells. It is living.

Answers

Answer: Sam is correct

Explanation:

Ponds use microrganisms

So pretty much that’s why it isn’t safe to drink since it has germs

Cara and Chuck were looking at pond water through a microscope. They saw this image. Cara wondered what it was. Chuck said it had to be a living thing because it was Question 1 options: green. Moving. Made of cells. Round throughout.

Answers

Because it was made of cells?

Which table shows two steps of DNA replication?

Answers

Answer: is H

Explanation: because that’s how it is reached by my teacher I don’t really know how to explain it

DNA replication is a process where the polymerase enzyme adds complementary nucleotide bases in the parent DNA strand, hence option h polymerase matches adenine to thymine is correct.

What is DNA replication?

The process by which a double-stranded DNA molecule is duplicated to form two identical DNA molecules is known as DNA replication.

Replication is necessary because when a cell splits, the two new daughter cells must have the same genetic information, or DNA, as the parent cell. In vitro DNA replication (DNA amplification) is also possible (artificially, outside a cell).

To begin DNA synthesis at known sequences in a template DNA molecule, DNA polymerases isolated from cells and artificial DNA primers can be utilized.

Therefore complementary base pairing of nucleotide base pairing, hence option h is correct.

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please help me!!!
Oral groove in paramecium is situated on
a.Dorsal side
b.Lateral side
c.ventral side
d.none

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Lateral side l think

PLEASE HELP ANY ANSWER WILL DO PLEASEEEE PLEASE
Draw a tree diagram for the dichotomous key that you used for the aliens.

Answers

Answer:

Explanation:

Help me please!!! Which hot spot is it? Left, 1st middle, 2nd middle, or Right?​

Answers

Answer:

Left side

Explanation:

The mitochondria

The Krebs cycle or citric acid processes in the mitochondrial matrix yield a substance called NADH. Adenosine triphosphate is then produced from NADH by enzymes included into the mitochondrial inner membrane (ATP).

What is the main role of mitochondria in nutrient energy?

Organelles, or “tiny organs,” are what mitochondria are. They generate ATP (adenosine triphosphate), a chemical that is used by the cell to power the various tasks it must perform, as a source of energy.

The creation of cellular ATP by oxidative phosphorylation is undoubtedly one of the activities of mitochondria, but they also play significant roles in ion homeostasis.

Various metabolic pathways, apoptosis and programmed cell death, as well as the production and consumption of ROS.

Therefore, mitochondria transform nutrient material into an energy form that is used by the cell.

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Through the activated channels, ____________ now flows outwards causing the membrane to repolarize back towards RMP.

Answers

Answer:

potassium

Explanation:

A molecule that closely resembles the shape of a substrate for an enzyme would most likely serve as a __________.

Answers

Answer:

I think it's Inhibitor :)

S. aureus is gram positive. What differences in strains might account for differences in phage susceptibilities?

Answers

S. aureus is indeed gram-positive but within the bacteria classed as gram-positive, there are differences that might predispose them to infection by phages.

S. aureus as an organism usually adapts to their environment through mutations on their membranes which can be proteins e.g. surface proteins, or receptor molecules e.g. sugar receptors.

In preventing invasion by phages, mutations are gained that prevents attachment to the bacteria cell surface. This effectively prevents the binding of the phage to the bacteria thus preventing infection.

It is also worthy to note that the differences in bacteria strain could range from a few nucleotides to large variations in chromosomes and thus can aid in identifying specific strains that might have beneficial factors in the context of disease prevention.

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When comparing plant cells to animal cells, which organelle is only present in plant cells?(1 point)

mitochondrion

cell membrane

cytoplasm

cell wall

Answers

Answer:

- cell wall -

Explanation:

The answer is a cell wall because the cell wall in a plant acts as a 'skeletal system'.

So tell yourself does, an animal that already has a skeleton, need the cell wall?!

NO! It dan't! That's why animals don't have the cell walls and plants do.

!!! Hoped that helped !!!

When comparing plant cells to animal cells, cell wall is only present in plant cells. The correct option is D.

What is cell wall?

A cell wall is a structural layer found just outside the cell membrane that surrounds some types of cells.

It can be tough, flexible, and rigid at times. It provides structural support and protection to the cell, as well as acting as a filtering mechanism.

The cell wall is made up of a network of cellulose microfibrils and cross-linking glycans embedded in a matrix of pectin polysaccharides that is highly cross-linked. Lignin can be found in secondary cell walls.

It provides a structural framework for plant growth and serves as the plant's first line of defense against pathogens.

The cell wall must also retain some flexibility so that it can be rapidly remodeled in response to developmental, biotic, or abiotic stimuli.

Thus, the correct option is D.

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What is the coloured ink indicator? Can anyone explain me its function? i really need help​

Answers

Answer:

Bioindicators are species, groups of species or biological communities whose presence, abundance and biological conditions, in real ecosystems or through the use of laboratory toxicity tests, to make inferences about the quality of the environment.

pls help asap I'll mark brainliest​

Answers

Answer:

water then carbon diaxide  and oxygen

Explanation:

Answer:

Light energy + Water + Carbon Dioxide to leaf to sugar + Oxygen

Explanation:

This is called photosynthesis. Hope it helps

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