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

Pathways that transmit sensory impulses are also called ______ pathways because the information travels from sensory receptors superiorly through the spinal cord to the brain.

Answers

Answer:

Ascending pathway

Explanation:

Sensory pathways are ascending pathways

the first group of animals to colonize land was likely

Answers

Answer:

horses

Explanation:

which enzyme is responsible for facilitating the hydrogen bonding between nucleotides

Answers

Answer:

The enzyme in charge of this is called a helicase (because it unwinds the helix). Which enzyme is responsible for facilitating the hydrogen bonding between nucleotides in a new DNA model? The DNA enzymes polymerase3 facilitates the hydrogen bond between nucleotides.

Which of the following statements would correct one of the roles listed in the table?

Answers

Answer:

Glucose combines with water to form carbon dioxide.

Explanation:

Glucose combines with water to form carbon dioxide.

What function or process is common to all living things?

Answers

Answer:

respiration

Explanation:

because the food is wanted by all and we all take breathe

when individuals are more successful at & reproducing than others?

Answers

Answer:

Natural selection, Evolutionary mechanism in which individuals that are better suited to their environment survive and reproduce most successfully.

what is the first color of the rainbow?​

Answers

Answer:

red

Explanation:

red it the first color

describe how the plasma membrane helps maintain homeostasis

Answers

Answer:

The plasma membrane, also called the cell membrane or phospholipid bilayer, is the sack that surrounds cells. ... The plasma membrane maintains homeostasis in the cell by keeping cell contents in and foreign material out, and by providing controlled avenues for the transportation of fuel, fluids and waste

A filamentous decomposer with cellulose cell walls could be a(n) __________. View Available Hint(s) for Part A algae water mold fungus helminth

Answers

Answer:c

Explanation:

A filamentous decomposer with cellulose cell walls could be a water mold.

Where is amoebae found?

Amoebae are found worldwide and are very common in soil, fresh water, and other habitats.

Do fungi have cell walls?

Fungal cells also contain mitochondria and a complex system of internal membranes, including the endoplasmic reticulum and Golgi apparatus.

Hence , B is correct option

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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 :)

lon khoáng nào đóng vai trò đặc biệt quan trọng trong quá trình đông máu?

Answers

Answer:

1. Xét nghiệm yếu tố đông máu để làm gì?

Để đánh giá khả năng đông máu như thế nào và quá trình đông máu kéo dài trong thời gian bao lâu, các bác sĩ sẽ tiến hành xét nghiệm các yếu tố đông máu.

Quá trình đông máu sẽ bảo vệ cơ thể bạn khi bị chảy máu. Tuy nhiên, nếu một cục máu đông hình thành trong tĩnh mạch bình thường thì đây là điều hết sức nguy hiểm vì có thể khiến cho dòng máu bị chặn đến tim, não, phổi.

Khi thực hiện xét nghiệm các yếu tố đông máu, sẽ biết được nguy cơ bạn bị chảy máu quá nhiều khi bị thương hay không hoặc có nguy cơ bị đột quỵ không.

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2. Các yếu tố đông máu gồm những gì?

Fibrinogen

Fibrinogen là yếu tố ảnh hưởng lớn đến quá trình đông máu

Sau đây là các yếu tố ảnh hưởng đến quá trình đông máu:

I - Fibrinogen: Fibrinogen là huyết tương có trọng lượng phân tử là 340.000, hòa tan được. Yếu tố này có mặt trong huyết tương với nồng độ là từ 100-700mg/ 100mL. Đa số Fibrinogen được tạo ra ở gan, vì thế đối với những bệnh nhân bị bệnh gan thì lượng Fibrinogen giảm trong máu tuần hoàn, sự đông máu bị ngăn cản.

II- Prothrombin: Prothrombin là protein huyết tương có trọng lượng phân tử là 68.700, có mặt trong huyết tương với nồng độ là 15mg/100mL. Gan sản xuất Prothrombin liên tục, chính vì vậy nếu gan bị suy yếu, lượng prothrombin sẽ giảm, gây ức chế sự đông máu.

III- Thromboplastin mô: Yếu tố này tham gia vào cơ chế đông máu ngoại sinh, thay thế phospholipid tiểu cầu và các yếu tố huyết tương. Bên cạnh đó, thromboplastin còn có tác dụng chống nhiễm khuẩn.

IV- Ca++: Quá trình đông máu không thể không có mặt của loại ion này.

V- Proaccelerin: Khi có nhiều ion Ca++ thì yếu tố này mất hoạt tính. Khi không có proaccelerin, người ta điều chế huyết tương bằng cách để lâu huyết tương lấy từ máu chống đông với oxalat.

VII- Proconvertin: Trọng lượng phân tử của yếu tố này là 60.000. Hoạt tính của yếu tố này trong huyết tương sẽ bị giữ lại trên màng lọc amiang;

VIII- Antihemophilic A: Để tổng hợp yếu tố này, phụ thuộc vào rất nhiều gen trong các nhiễm sắc thể khác nhau. Thường thì antihemophilic được tổng hợp chủ yếu từ gan, lá lách và hệ thống võng nội mô. Khi thiếu ion Ca++ thì yếu tố này mất hoạt tính. Đây là yếu tố chống huyết hữu B;

IX- Antihemophilic B: Chống huyết hữu A.

X- Stuart: Stuart có trong huyết tương, ở dưới dạng không hoạt động. Trong quá trình đông máu nội sinh có sự tham gia của yếu tố này. Khi cho thromboplastin mô vào quá trình đông máu ngoại sinh, sẽ không còn yếu tố stuart.

XI- Plasma Thromboplastin Antecedent (PTA): Quá trình khởi phát đông máu nội sinh không thể thiếu yếu tố PTA.

XII- Hageman: Động lực để tạo thành một loạt phản ứng dẫn đến đông máu là sự tiếp xúc giữa yếu tố XII với mặt trong mạch máu tổn thương cùng sự có mặt của phospholipid tiểu cầu. Bên cạnh chức năng hoạt hóa hệ đông máu, Hageman còn hoạt hóa hệ đông máu, hệ bổ thể và hệ chống đông.

XIII - Fibrin Stabilizing Factor ( FSF): yếu tố này có hoạt tính bền vững trong huyết tương, ổn định fibrin.

Explanation:

Students observed the shape of the Moon with the same amount of time between each observation. They drew this sequence.



Complete each of the 2 activities for this Task.
Activity 1 of 2
How long did it take them to record this sequence?



(Mark the one best answer.)



A.
About 2 days

B.
About 2 weeks

C.
About 2 months

D.
About 2 years

Answers

Answer:

B about 2 weeks

Explanation:

Two weeks is how long it would take to observe five moon phases. Rather that 2 months which would show two full moon cycles.

How is energy transferred within the ecosystem in which your organism lives

Answers

Answer:

Your metabolism is in charge of converting food to energy

Explanation:

Energy is transferred between organisms in food webs from producers to consumers. The energy is used by organisms to carry out complex tasks. The vast majority of energy that exists in food webs originates from the sun and is converted (transformed) into chemical energy by the process of photosynthesis in plants.

Which of the following is (are) part of a systemic immune response?
I. A fever
II. An increase in white blood cells in the body
III. An inflammatory response
I only
II only
III only
I and II only
I, II, and III

Answers

Answer:

l, ll, and lll.

Explanation:

Which organelle produces the energy a cell needs to carry out its functions? Powerhouse

A. Mitochondria
B. Nucleus
C. Golgi complex
D. Endoplasmic Reticulum

Answers

Mitochondria is the powerhouse of the cell

if a cell is in a state in which it no longer divides then the cell is probably arrested at which stage of the cell cycle?

Answers

Answer:

Interphase

I

Explanation:

Interphase is the period of the cell cycle during which the cell is not dividing. The majority of cells are in interphase most of the time. Mitosis is the division of genetic material, during which the cell nucleus breaks down and two new, fully functional, nuclei are formed.

1. What is photosynthesis?
Photosynthesis is a process in which...

Answers

Answer: Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.

Explanation: During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.

Answer: photosynthesis is the process in which plants use sunlight , water and carbon dioxide to create oxygen and energy in the form of sugar .

Explanation: hope it helps you .

What element is found in liver and is needed to prevent anemia?

Answers

Answer:

Iron (Fe)

Explanation:

1. How does Air move in Earth's Atmosphere?

Answers

Answer:

Air in the atmosphere moves around the world in a pattern called global atmospheric circulation. ... When the air cools, it drops back to the ground, flows back towards the Equator, and warm again. The, now, warmed air rises again, and the pattern repeats. This pattern, known as convection, happens on a global scale.

write the function of these in your body. carbohydrates, protein, vitamin​

Answers

Answer:

Carbohydrates

- is the main source of energy of your body. They help you fuel your brain, kidneys, heart muscles, and central nervous system.

Protein

- A lot of your body is protein. Your muscles are just about all protein, and most of your organs are protein. Many of the chemical reactions in your body are speeded up by other types of protein. Your body can make some of the components of protein by itself, and it must get some of the components from outside of the body.

You need protein daily for your tissue to repair itself, normal function, and perhaps to grow.

Vitamin

- Vitamins allow your body to grow and develop. They also play important roles in bodily functions such as metabolism, immunity and digestion.

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?

what hormone directly opposes the actions of natriuretic hormones?

Answers

Aldosterone!
Explanation: Aldosterone reabsorbs sodium in which is associated with osmotic recovery of water is in direct opposition of natriuretic hormones since it allows secretion of water.

The hormone that directly opposes the actions of natriuretic hormones is aldosterone.

Aldosterone is a hormone produced by the adrenal glands, specifically the adrenal cortex. It acts on the kidneys to promote the reabsorption of sodium ions and the excretion of potassium ions.

Natriuretic hormones, on the other hand, promote the excretion of sodium ions and the reabsorption of potassium ions in the kidneys, leading to increased urine production and decreased blood volume.

Therefore, aldosterone counteracts the effects of natriuretic hormones by increasing sodium reabsorption and reducing potassium excretion, which helps to retain water and maintain blood pressure.

In summary, while natriuretic hormones promote sodium excretion and water loss, aldosterone works in the opposite direction by promoting sodium reabsorption and water retention.

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Look at the image above. What type of cells are these?

A. Prokaryotic
B. Eukaryotic
C. Both

Answers

Answer:

The is B eukaryotic because it have nucleus and other organelles like mitochondria and others

The answer should be B.

When a person begins to walk, the neurons in the ______ stimulate the appropriate muscles to produce the pattern and rhythm of arm and leg movements associated with walking.

Answers

Answer:

caudate nucleus

Explanation:

When a person begins to walk, the neurons in the caudate nucleus stimulate the appropriate muscles to produce the pattern and rhythm of arm and leg movements associated with walking

why is it important for gametes to be haploid jiskha

Answers

Answer:

its important for gametes to be haploid so when fusion of the Male and female gametes take place after fertilization the correct amount of chromosome numbers specific to the species can be restored

It is important for gametes to be haploid as just to maintain the chromosomal number. It is present for the sake of incorporation of both of the sets of chromosome in the progeny.

What is the number of chromosomes in humans ?

It is having 23 pairs of chromosomes that is having total of 46 chromosomes.

Because meiosis just  creates cells which are destined to be  the gametes  and in this reduction in the  chromosome number is just  critical that is  without the process, the union of the  two gametes  that are during  the fertilization that will result in  the offspring with just  twice of normal number of the  chromosomes.

Haploid cells in the  humans are just produced out  by meiosis. This is type of  the cell division in which the  single diploid parent cell  just divides to just  produce four with the non-identical  type of the haploid daughter cells. In  meiosis is just  used to get the type of the  produced  type of gametes and is are a  necessary kind of  precursor to  the sexual reproduction.

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what is the name of the provisional head priestess of the asase shrine?

Answers

what is the name of the
provisional head priestess of
the asase shrine? Neko

please help, thank you!

Answers

Answer:

regulates which materials enter and leave the cell

17. Which of the following is an acid?

Answers

Explanation:

c is an acid I think but it may not be right

organisms that have bigger genomes are more complex than organisms with smaller genomes.

Answers

Not necessarily. There is a Japanese flower (Paris japonica) that has a genome 50x larger than the human gene.

when oxygen is unavailable during heavy exercise what process do muscle cells use for energy generation?

Answers

Answer:

anerobic resperation

Explanation:

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When the day ends, WE CAN ALL GO HOME AND MAKE COOKIES.lt isDependent ClauseIndependent Clause PLZ HHHHHELP POINTSSS HERE Which of the following types of discrimination would be subject to the rational basis test? a. A law that treats men differently from women b. A law that treats 10-year-olds differently from 28-year-olds c. A law that treats white people differently from other citizens d. An action by a state governor that treats Asian Americans differently from other citizens If you reported to work at 18.00 on Wednesday and you get off at 02.50 on a Thursday, which day of pay period week are you working? Round 2,913 to the nearest ten 29. Which set of integers is listed in order from least to greatest?5,8,-9, -10-5, -3, -2,7O-5, 4, -2, -7O 5, 4, 2, -1 According to the passage,which situation might benefityou?Speaking your thoughts and opinionsduring an argumentSetting goals that require hard workand commitmentMaking sure others are respected andsupportedDoing research to debate a topic youbelieve inat aboutfor their which number is closest to 0.02A. 0.019B. 0.04C. 0.1D. 0 Select the correct answer from the drop-down menu.Which detail in the image best supports the main idea that Palo Duro is one of the most Illustrious sites in the world?The image detail that best supports the main idea of the text is sand is falling off a conveyor in a conical pile at a constant rate of 2 cubic yards per minute. The height of the sand is equal to the radius of the pile of sand on the ground. If the cone-shaped pile is 3 feet tall now, how tall will it be in one hour? Safety belts usually consist of a lap belt and __________ Commonlit: How does Tiresias's prophecy affect the plot of the storyA. Tiresias predicts that Narcissus will drown so his mother Liriope kept him from rivers and springs.B. Tiresias predicts that Narcissus shall be beautiful but cursed by a spurned lover, and so his mother Liriope instructs him to reject all potential lovers.C. Tiresias predicts that Narcissus shall die if he sees his reflection; embittered, Narcissus scorns all lovers because they only talk of his beauty, which he cannot see.D. Tiresias predicts that Narcissus will live a long life as long as he does not see his reflection; when he does, it leads to his tragic end. In an experiment, the temperature of a sample is measured as 16 degrees Celsius.If the percent error is 0.75%, how can you report the temperature of the sample using the absolute error and the actual temperature value in degrees Celsius?-160.12-1612-160.047-164.7 Apply the Triangle Sum Theorem to find the sum of the angles in the pentagon. A pentagon can be divided into three triangles. Aliyah went to the sandwich shop for lunch. She had a sandwich and a salad. Her total bill for lunch was $9.82. The salad she ordered cost $2.56. Which correctly shows how she determined the cost of her sandwich? Find the missing number in the following series: __ 85 81 83 79 81 77 plsss answer my questionits in the picture How did the population of the colonists change over time Using the formula find the slope of a line with these two points (2,10) and (5,15). Which sentence uses the word volcano or volcanoes as figurative language? The freshman class learned today that not all volcanoes erupt violently. The freshmen will have their volcanoes for science with them today. The situation with the freshman is like a volcano threatening to erupt. The situation with the freshman volcano project has been resolved.