Hydrogen ions are important in the light-dependent reactions of photosynthesis because they produce a
difference in charge across the thylakoid membrane that allows
a. the production of ATP.
b. the release of water molecules.
c. light to enter the chloroplast.
d. the conversion of 3-carbon molecules into higher-energy forms.
Answers
Answer:
a. the production of ATP
Explanation:
Photosynthesis is type of biosynthesis that produces glucose from the reactants sunlight, carbon dioxide and water. It happens in two phases of the chloroplast, the light-dependent and light-independent reactions. In a light reaction that stimulates photosystems, pigments such as chlorophyll absorb light energy at specific wavelengths. Here,
Light energy stimulates photosystem complexes formed from chlorophyll. Photosystem II then absorbs and transfers light to a reaction core. Water undergoes hydrolysis or splitting to yield an electron, a proton (H+) and oxygen. energy is passed along the electron transport chain, where it forms builds up H+ and an electrochemical gradient in the thylakoid spaceThese protons pass through the ATPase enzyme embedded within the membrane, into the stroma, generating ATP from ADP.NADPH is generated from NADP+
Related Questions
The image shows the Great Rift Valley in Africa, an example of a rift valley.
Which statement best describes how the Great Rift Valley in Africa formed?
The rift valley formed when the crust pulled apart.
The rift valley formed due to subduction.
The rift valley formed similarly to an island arc.
The rift valley formed at a convergent boundary.
Answers
Answer:
The rift valley formed when the crust pulled apart.
Explanation:
The statement that best describes how the Great Rift Valley in Africa formed is that they formed when the crust pulled apart.
This is geologically known as divergence. The Arabian plate and the Nubian/Somali plate are divergent plates. They are currently moving apart and away from each other. This creates a crack on the earth which is what formed the rift valley in Africa. Along such margins, earthquake activities are prominent.The statement that's describes the formation of the Great Rift Valley in Africa is A. The rift valley formed when the crust pulled apart.
The Great Rift Valley is a geographical trench that's bordered by mountains and volcanoes.
It should be noted that the Rift Valley was formed due to violent subterranean forces which tore the Earth's crust. In conclusion, The rift valley formed when the crust pulled apart.
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Which of the following is not a process of chemical weathering?
A.) Carbonation
B.) Oxidation
C.) Acid Precipitation
D.) Exfoliation
Answers
Answer:
D
Explanation:
Answer:
C and D
Explanation:
carbonation and oxidation are apart of chemical rain along with solution hydration hydrolysis reduction and chelation
why does boiled yeast not ferment?
Answers
Answer:
they cant get enough heat to boil
Explanation:
Answer:
Possibly because of lack of air to activate the yeast? Or not enough heat, maybe?
Explanation:
If this is not correct, please, let me know, as I will be happy to correct it! :)
Based on these images, what can you say about the tentacles of an octopus and the limbs of a lizard?
They're homologous structures.
They're analogous structures.
They're vestigial structures.
They're neither homologous nor analogous structures.
n Thevre neither vestigial nor homologous structures,
select all correct answers
Answers
Answer:
B is one of the correct answers.
Explanation:
Mine has multiple answers but if yours doesn't I hope this helps!
The tentacles of an octopus and the limbs of a lizard are analogous organs. So the correct option is B.
What are analogous organs?The organs possessed by different species which have different anatomical structures but perform the same function as one another are called analogous organs. The development of analogous organs is a form of convergent evolution.
In convergent evolution, different types of species evolve separately and independent of each other but at some point, their functions or the functions of their organs converge with one another.
These analogous organs are developed in totally unrelated species but due to their environment, their evolution works in such a way that they develop in a similar way even after sharing no similarities with each other.
The convergent evolution giving rise to analogous organs is called homoplasy in terms of cladistics.
Thus, the tentacles of an octopus and the limbs of a lizard are analogous to each other. Therefore the correct option is B.
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pls pls pls pls pls pls pls pls pls pls pls pls pls pls pls pls
Answers
Answer:
B
Explanation:
Uracil replaces thymine so when you translate it you put each bases pair so for RNA uracil would replace adenine and guanine would replace cytosine.
Answer:
bbbbbbbbbbbbbbb
Explanation:
b
b
b
b
b
b
6. Whether a molecule can cross the plasma membrane depends upon
A. the size of the molecule
B. the chemical properties of the molecule
C. the charge of the molecule
D. All of the above
Answers
D) All of the above
Whether a molecule can cross the plasma membrane depends upon D. All of the above
Which molecule can pass the plasma membrane?
Small nonpolar molecules, consisting of O2 and CO2, are soluble in the lipid bilayer and consequently can effectively cross cell membranes. Small uncharged polar molecules, which include H2O, can also diffuse thru membranes, however large uncharged polar molecules, inclusive of glucose, cannot.
How do molecules pass across the plasma membrane?Explanation: Molecules pass throughout the plasma/mobile membrane through diffusion. If they're not small sufficient, they need to break down by means of other substances, which include enzymes, which can be biological catalysts. If they are small enough, usually, the easiest way for them to move is through diffusion.
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I need help with this. Answer the punnet square and then answer the questions next to it. Please!
Answers
Answer:punnet square one :)
Explanation:
Bb. Bb
Bb. Bb
One challenge to understanding earth is
Answers
Answer:
I'm confused, what's the question here.
Explanation:
A student claims that the monarch population increases and decreases in a cycle, similar to the pattern of predator-prey populations like wolves and moose. Use the data to evaluate this claim
Answers
Answer:
yes that is true because by looking at the graph you can tell that it starts to increase then slowly decrease.
Explanation:
The monarch population represented by the graph depicts a fluctuating pattern which epitomizes a rise and fall pattern in the area occupied by monarchs over the winter season between 1995 and 2005.
The predator-prey population depicts the sharp decline in the prey population as they are being fed on in large numbers as the number of predator multiplies. This is followed by a decrease in the number of predators due to starvation as the available prey are insufficient to cater for their number. The cyclic nature of the graph shows similar pattern as areas occupied by monarchs declines as the winter season progresses over time.Learn more :https://brainly.com/question/18576344?referrer=searchResults
What is not a form of indoor pollution? radon tobacco ozone
Answers
Answer:
OZONE
Explanation:
O-zone is a layer of the earths atmosphere
Answer:
One ozone is the correct answer, and two ozone is not a layer of the earth it's an outdoor air pollution
Explanation:
5
How does the burning of fossil fuels negatively impact ecosystems? Select all that apply
A It increases biodiversity in tropical environments
B It creates air pollution and acid rain
с
It causes eutrophication in lakes and ponds
D
It creates nitrogen oxide gases that deplete Earth's protective ozone layer
E
It increases greenhouse gases in the atmosphere cause global climate change
FIt increases the pH of ocean water
Answers
It creates pollution and acid rain
It creates nitrogen oxide gases that deplete Earth’s protective ozone layer
It increases greenhouse gases in the atmosphere
Step By Step Explanation:
The burning of fossil fuels negatively impacts ecosystems in that it creates air pollution and acid rain, produces nitrogen oxide gases that deplete Earth's protective ozone layer, increases greenhouse gases in the atmosphere, and causes global climate change. B, D, and E are the correct options.
What is the burning of fossil fuels?The burning of fossil fuels, such as coal, oil, and gas, releases a variety of pollutants into the environment. One of the most significant impacts is the release of sulfur dioxide (SO2) and nitrogen oxides (NOx) into the atmosphere. These compounds can react with water and air to form acid rain, which can have harmful effects on both terrestrial and aquatic ecosystems.
Hence, the correct answers are It creates air pollution and acid rain, produces nitrogen oxide gases that deplete Earth's protective ozone layer, increases greenhouse gases in the atmosphere, and causes global climate change. B, D, and E are the correct options.
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BLANK is the process of cutting DNA into fragments and inserting the fragments with a
desired
BLANK into another organism of the same or different species.
Answers
Answer:
Genetic engineering
is the process of cutting DNA into fragments and inserting the fragments with a desired trait into another organism of the same or different species.
Genetic engineering is also known as
✔ recombinant DNA technology
.
Explanation:
So the answers are
Genetic engineering
Trait
Recombinant DNA technology.
Why does the east coast of South America not have mountains volcanoes and earthquakes?
Answers
The east coast of South America does not have mountains volcanoes and earthquakes because of the conventional geologic story.
Reason of east coast of South America not involved mountain:The conventional geologic story renders the East Coast of North America which we called as the passive margin.
It is an area free of volcanoes and earthquakes because of its position that lies within the fractured plates which could be comprise of the surface of the globe.
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What is the role of DNA polymerase enzymes in replication?
unzipping the double helix by breaking down the hydrogen bonds
adding the free nucleotides to the complementary strand of DNA
connecting the fragments on the lagging strand of DNA
splitting the DNA molecule
Answers
Answer:
adding the free nucleotides to the complementary strand of DNA
What do we get out of the process of meiosis? How does that help increase diversity in a species?
Answers
Answer: By the end of meiosis, the resulting reproductive cells, or gametes, each have 23 genetically unique chromosomes. The recombination of chromosomes creates genetic diversity by allowing genes from each parent to intermix, resulting in chromosomes with a different genetic complement.
What is the function of each term
Terms:
Lipids
Protein
Carbohydrates
Nucleic acids
Functions :
Provide energy for the cell
Component of cell membranes
Catalyze chemical reactions
Store genetic energy
Structure of cell walls
Answers
Answer:Lipids-Component of cell membranes
Protein-Store genetic energy
Carbohydrates-Structure of cell walls
Nucleic acids-Provide energy for the cell
Explanation:
What kind of allele results in the trait indicated by the green color being expressed in
the individuals shown here?
Answers
Answer:
dominant
Explanation:
because the dominant is present as it's phenotype
What is the complimentary dna strand for AGT CGA CCT TTA CGA GGC ACT
Answers
1. DNA: mRNA:
AA: Symbol:
2. DNA: mRNA:
AA: Symbol:
3. DNA: mRNA:
AA: Symbol:
4. DNA: mRNA:
AA: Symbol:
C T T C C A C C T GAA GGU GGA Glu Gly Gly
EGG
G T G C T T T T A CAC GAA AAU His Glu Asn
HEN
G GT C GT A C C CCA GCA UGG Pro Ala Trp
PAW
TCGTTCTAA AGC AAG AUU Ser Lys Iso SKI
Try a longer sentence
5. Following the same procedure, decode the message your teacher gives you below. (Note: the stop codons are used as spaces)
The unstable isotope nickel 59 can be used to date rocks that contain nickel 59 decays into the more stable cobalt 59 the nickel isotope has a half-life of 76,000 years which statement about nickel 59 is true?
A. After 76,000 years all the nickel 59 in a rock decays in the cobalt 59
B. Nickel 59 can only be used to date rockstar younger than 76,000 years
C. All the nickel 59 stabilizes after he completes 1/2 life. Of 76,000 years
D. The amounts of nickel 59 and cobalt 59 remain the same over a half life period
E. The amounts of nickel 59 in cobalt 59 tell how long ago the rock cool to closure temperature
Answers
Answer: C.
Explanation:
The amounts of nickel 59 and cobalt 59 remain the same over a half life period. So, the correct option is (D).
What is Half-life?The half-life of an isotope is described as the period in which half of the amount of the isotope has decayed and half of its original amount is present. Half-life is defined as the time required for a quantity to reduce to half of its initial value.
It is used in nuclear physics to describe how quickly unstable atoms undergo radioactive decay or how long stable atoms live. This is usually the case to characterize any type of exponential decay.
[tex]t_1_/_2= 0.693/k[/tex]
Where, [tex]t_1_/_2[/tex]= half life of the isotope
k = Decay constant
Nickel-59 has a half-life of 76,000 years, meaning that the time it takes for the isotope's original mass to decrease to half of its original volume is 76,000 years which means that amount of nickel-59 left to be decayed is equal to the amount of nickel-59 decayed into cobalt-59.
Thus, the amounts of nickel 59 and cobalt 59 remain the same over a half life period. So, the correct option is (D).
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What is the function of a smooth muscle tissue?
Answers
Answer:
Smooth muscle is found in the walls of hollow organs like your intestines and stomach. They work automatically without you being aware of them. Smooth muscles are involved in many 'housekeeping' functions of the body. The muscular walls of your intestines contract to push food through your body.
Explanation:
In 1815 a volcano erupted spewing billions of tons of ash into the sky. This ash "cloud" caused global annual temperatures to drop below normal, causing "a year without a summer" in 1816.Which sphere did this ash "cloud" affect to cause these changes? *
Answers
Answer:
The Atmosphere
Explanation:
1816 was a year without summer because the billions of tons of ash that was spewed blocked radiation preventing it from reaching the surface of the earth.
A volcano is a break in the crust of planetary bodies like Earth that allows gasses, volcanic ash, and hot lava to escape. Volcanos are one of the major factors that cause climate changes on Earth mostly because of their cooling effect.
The ash, gasses and lava usually escape to the atmospheric layer of the earth with their cooling effect. And they cool the earth by blocking incoming solar radiation. This can go on for months or years depending on the components and severity of the eruption and can lead to "a year without summer" as witnessed in 1816.
A trait such as having a crooked thumb is produced by a (n)
Answers
A Hitchhiker thumb or crooked thumb is produced by recessive alleles. It is an example of a rare genetic disorder.
What is Hitchhiker's thumb?Distal hyperextensibility of the thumb is another name for a hitchhiker's thumb. This is caused by the hereditary characteristics that lead a person to stretch while bending his thumb backward.
The distal joint is crucial in maintaining the thumb's straightness. The thumb can bend backward, becoming the hitchhiker's thumb, when the distal joint hyperextends. A hitchhiker's thumb is neither a benefit nor a drawback.
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Every winter, Alice notices that the monarch butterflies seem to disappear from her backyard garden. Then, the butterflies return to her garden each spring.
Which best describes the butterflies’ behavior?
migration, which is a response to an external stimulus
migration, which is a response to an internal stimulus
flight, which is a response to an external stimulus
flight, which is a response to an internal stimulus
Answers
Answer:
A. migration, which is a response to an external stimulus
Explanation:
The external stimulus could be the monarchs moving for food, shelter, or something else. Because these factors are external, this is an external stimulus that causes them to migrate.Answer:
a
Explanation:
Can someone help me with this please?
Answers
Answer:
i think second
Explanation:
Which describes the two cells formed through mitosis?
They are identical to each other but unlike the parent cell.
They are different from each other and the parent cell.
They are identical to each other and to the parent cell.
Answers
Answer:
The third one.
Explanation:
Mitosis doubles the DNA and then splits the cell in two so it will have identical daughter cells.
Answer:
They are identical to each other and to the parent cell.
Explanation:
Mitosis is used to produce daughter cells that are genetically identical to the parent cells. The cell copies - or 'replicates' - its chromosomes, and then splits the copied chromosomes equally to make sure that each daughter cell has a full set.
PLZ HELP ME QUIXK! I WILL GIVE BRAINIEST!!!!
What types of seismic waves are likely to travel through the outer core?
A. Both S and P, because the outer core is liquid
B. Both S and P, because the outer core is solid
C. P but not S, because the outer core is liquid
D. P but not S, because the outer core is solid
Answers
Answer:
The answer is C
Explanation:
S only travels in solid's while P travels in both, the outer core is a liquid there for it would be C.
P but not S, because the outer core is liquid
Why is it logical for the level of FSH to fall greatly following ovulation?
Answers
Answer:
During each menstrual cycle, there is a rise in follicle stimulating hormone (fsh) in the first half of the cycle that stimulates follicular growth in the ovary. After ovulation the ruptured follicle forms a corpus luteum that produces high levels of progesterone. This inhibits the release of fsh!
2.
How can biologic weathering result in chemical erosion?
A. plants transpire water vapor
B. roots loosen soil and break rocks
C. bacteria release acids and other agents that break down rock
D. large herds trample rocks and break up soil
Answers
A microwave can reheat 1 cup of coffee in 30 seconds. It takes a coffee maker 10 minutes to brew 12 cups of coffee. If
the coffee maker requires 900 watts of power and the microwave requires 1200 watts of power, does it require more
energy to brew 12 cups with the coffee maker or reheat 12 cups of coffee in a microwave?
The coffee maker requires more energy.
The microwave requires more energy.
They require the same amount of energy.
The answer cannot be determined without more information.
Answers
Answer:
It takes more energy to reheat coffee in the microwave
Explanation:
1 cup= 30 seconds
12 cups= 30*12= 360 seconds
360/60= 6 minutes
It takes 6 minutes to reheat 12 cups of coffee.
900 watts/10 minutes= 90 watts per minute
1200 watts/6 minutes= 200 watts per minute
Answer:
The coffee-maker requires more energy.
Explanation:
Explanation: At 30 seconds a cup, the microwave will require 6 minutes to reheat the 12 cups of coffee. This is 1/10 of an hour, so the microwave uses 1200/10 = 120 watt-hours of energy. The coffee-maker requires 10 minutes to brew 12 cups of coffee, or 1/6 of an hour. This means it will use 900/6 = 150 watt-hours of energy.
Breaking Down Food Quick Check
Chemical energy is stored in the bonds of
1.)water molecules.
2.) carbon dioxide molecules.
3.)glucose molecules.
4.) oxygen molecules.
Answers
Answer:
cake and the fact that the way it is baked