In light reactions, a molecule of chlorophyll absorbs one photon of light, causing a chlorophyll electron to transfer to a higher energy level. The energized electrons from the chlorophyll molecules flow down a transportation chain to a compound called nicotinamide adenine dinucleotide phosphate or NADP.
▪▪▪Cutest Ghost▪▪▪Water is the molecule that supplies chlorophyll with electrons.
What happens during photosynthesis?Photosynthesis is the process by which plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose (sugar) and other carbohydrates. This process also produces oxygen as a byproduct.
During the process of photosynthesis, chlorophyll absorbs light energy, which is used to split water molecules into oxygen and hydrogen atoms. The hydrogen atoms are then used to generate ATP and NADPH, which are used to power the process of carbon fixation. The oxygen atoms are released as a byproduct of water splitting and become a part of the oxygen in the Earth's atmosphere.
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Which of the following sets of organelles can be found in both eukaryotes and prokaryotes?
nucleus and mitochondria
Golgi body and nucleus
ribosomes and cell membrane
chloroplast and nucleus
Answer:
ribosomes and cell membrane
Explanation:
Prokaryotes are not allow to have nucleus. They have free roaming DNA, so only ribosomes and cell membrane can be both.
the green color of leaves is evidence that green light is:
Please help !! 100pts
1.
Which of the following best summarizes why the technological invention of microscopes was important to biology?
It created public interest and support for research.
It created a means of funding for cell research.
It allowed for development of the cell theory.
It proved that cells could form spontaneously.
2.
Which of the following best compares the structures found in plant cells and animal cells?
Plant cells have rigid cell walls and do not contain mitochondria or ribosomes while animal cells do.
Plant cells contain rough endoplasmic reticulum and a Golgi apparatus while animal cells contain smooth endoplasmic reticulum surrounded by lysosomes.
Animal cells do not contain chloroplasts, cell walls, or a large central vacuole while plant cells do.
Animal cells contain cell walls and a large central vacuole while plant cells contain cell membranes and many small vacuoles.
3.
Which equation describes what happens in photosynthesis?
CO2 + O2 + H20 + energy → CH2O5
6CO2 + 6H2O + energy → C6H12O6 + 6O2
C6H12O6 + 6O2 → 6CO2 + 6H2O + energy
C6H12O6 + H20 → CO2 + energy
4.
Early elements of the cell theory followed soon after the development of Hooke’s light microscope. What does this relationship suggest about the evolution of the cell theory since Hooke?
Progress on the cell theory was delayed by a lack of technological progress.
Scientists needed to focus less on cells and more on microscope development.
Isolated scientists contributed pieces of the cell theory to form the whole.
Improvements in technology are closely related to changes in the cell theory.
5.
Oxygen is a product of photosynthesis. The primary role of this oxygen in cellular respiration is to
combine with lactate, forming pyruvate.
combine with carbon, forming CO2.
yield energy in the form of ATP as it is passed down the respiratory chain.
act as an acceptor for electrons and hydrogen, forming water.
6.
Some proteins catalyze biochemical reactions. If a genetic defect prevented a protein catalyst from being produced, which of the following do you predict would happen in the cell?
The reverse reaction of the one the protein catalyzes would begin to proceed.
The reaction the protein catalyzes would only occur in some places in the cell.
The cell would find a different type of protein to catalyze the reaction.
The reaction the protein catalyzes would proceed very slowly or not at all.
7.
Which statement best compares a eukaryote and a prokaryote?
Eukaryotes use active transport to move substances across the cell membrane, while prokaryotes use facilitated diffusion.
Eukaryotes have membrane-bound organelles, while prokaryotes have few specialized structures.
Eukaryotes use flagella to move themselves through substances, while prokaryotes are not able to move.
Eukaryotes have a cell wall, while prokaryotes have a cell membrane.
8.
What are the reactants for cellular respiration?
H2O and O2
Glucose and O2
Glucose and CO2
H2O and CO2
9.
Which of the following best compares the membranes found in different types of cells?
Animal cells have cell membranes and cell walls, but plant cells do not have cell membranes.
Prokaryotes and eukaryotes both have cell membranes, but eukaryotes also have membrane-¬‐bound organelles.
Animal cells have membrane-¬‐bound organelles, while plant cells carry out the functions necessary for life in the cytoplasm.
Prokaryotes have only cell membranes, while eukaryotes have both cell walls and cell membranes.
10.
Which of the following characteristics defines a cell as a eukaryote?
Having ribosomes
Being able to move
Having a nucleus
Being able to reproduce
11.
Water has a much higher specific heat than most other covalent compounds. What do you predict might happen if water had a low specific heat instead?
Harmful organisms living in water would reproduce at a rapid rate.
Organisms that are sensitive to changes in temperature would die.
Flooding would occur and animals would be forced to migrate.
Plants would not have enough water to effectively carry out photosynthesis.
12.
Which of the following best describes a result of the polar nature of water molecules?
Ionic compounds dissolve easily in water.
The volume of water decreases by nearly half when it is frozen.
Water molecules repel each other.
Water molecules repel most other substances.
Explanation:
1. It allowed for development of the cell theory.
2. Animal cells do not contain chloroplasts, cell walls, or a large central vacuole while plant cells do.
3. 6CO2 + 6H2O + energy → C6H12O6 + 6O2
4. Improvements in technology are closely related to changes in the cell theory.
5. Yield energy in the form of ATP as it is passed down the respiratory chain.
6. The reaction the protein catalyzes would only occur in some places in the cell.
7. Eukaryotes have a cell wall, while prokaryotes have a cell membrane.
8. Glucose and O2
9. Animal cells have cell membranes and cell walls, but plant cells do not have cell membranes.
10.Having a nucleus
11. Plants would not have enough water to effectively carry out photosynthesis.
12. Ionic compounds dissolve easily in water.
I hope this helps!
what is the relation ship between the availabilty of resources and human population growth
Answer:
An increase in human population growth means there is an increased need for natural resources to supply the basic needs of the population.
Explanation:
Which is not some other occurs in translation?
Explanation: Translation has pretty much the same three parts, but they have fancier names: initiation, elongation, and termination. Initiation ("beginning"): in this stage, the ribosome gets together with the mRNA and the first tRNA so translation can begin.
I guess this helped you
a bacterium has positively supercoiled dna. this is likely because
Answer:
A bacterium has positively supercoiled DNA. This is likely because? A. The bacteria don't normally express their genes. B.
Explanation:
The bacteria normally grow in high temperature condition. So, the correct option is D.
What is Bacteria?Bacteria are defined as tiny, single-celled organisms that are millions of different types of bacteria. Many can be found in and on the body and are beneficial to us. Bacteria lack a membrane-bound nucleus and other internal structures, so they are classified as unicellular life-forms called prokaryotes.
The bacteria in our bodies help break down the food we eat, provide us with nutrients and neutralize toxins that play an essential role in preventing infection by protecting colonized surfaces from invading pathogens.
Thus, the bacteria normally grow in high temperature condition. So, the correct option is D.
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Your question is incomplete, most probably the complete question is:
A bacterium has positively supercoiled DNA. This is likely because
A. It doesn't matter if the supercoiling is positive or negative as long as it compresses the DNA
B. The bacteria need most of their genes to be active
C. The bacteria don't normally express their genes
D. The bacteria normally grow in high temperature condition
where are the proteins of the electron transport chain located in a eukaryotic cell?
Answer:
In eukaryotes, the electron transport chain is located in the inner mitochondrial membrane. In prokaryotes, it is located within the plasma membrane
What caused the stickleback population to have less armor and become faster?
Answer:
the changes were caused by different genes in each species.
Explanation:
whether a synapse is excitatory or inhibitory is determined by the
Tại sao con người chúng ta lại sốt nhiều lần như vậy?
Answer:
Fever is an elevated temperature of the human body that is substantially beyond the normal range. Normal body temperature fluctuates daily from about one degree below 98.6 degrees Fahrenheit to one degree above that number. Lower body temperatures usually occur before dawn; higher temperatures in the afternoon.
Body temperature also varies slightly depending on where on the human body it is measured. Rectal (internal) temperature tends normally to be higher than skin (surface) temperature. Oral and armpit temperatures can approximate actual body temperature and are more convenient to measure.
summarize the effects of mutations on organisms?
Answer: Harmful mutations may cause genetic disorders or cancer. A genetic disorder is a disease caused by a mutation in one or a few genes. A human example is a cystic fibrosis. A mutation in a single gene causes the body to produce thick, sticky mucus that clogs the lungs and blocks ducts in digestive organs.
Explanation: Hope this helped!
Read the scenario.Joe, a reporter for Main Street News, covered a campaign rally for Jiya Patel, who is running for county commissioner. While at the rally, he interviewed the candidate and some audience members as his research for the article. He then wrote an article describing the rally, the candidate’s platform, and the reasons her supporters believe that she is the best person for this job. When he finished, he turned his article in to his editor. As the editor reviews this story, he sees a public report on campaign donations and learns that Joe has made a sizeable contribution to Patel’s campaign.What is the most ethical action for the editor to take?
Answer:
explain to the reporter that the newspaper cannot run the story because of perceived bias based on donations, so the article is being reassigned
Explanation:
Answer:
Explain to the reporter that the newspaper cannot run the story because of perceived bias based on donations, so the article is being reassigned
Explanation:
Correct on Edge 2022! Also, having a donation added means he already supports this, so writing a story about it isn't fair due to his previous bias.
How did the floating rubber ducks get from the coast of Japan all the way across the Pacific Ocean to Canada and Alaska?
Answer:
id say the tides, but i dont know your answer choices. If you post them i could help more.
Explanation:
How does the human immune system work
Answer:
The acquired immune system, with help from the innate system, produces cells (antibodies) to protect your body from a specific invader. These antibodies are developed by cells called B lymphocytes after the body has been exposed to the invader. The antibodies stay in your child's body.
the cell cycle represents the coordinated sequence of events in the life
Explanation:
The cell cycle represents the coordinated sequence of events in the life of a cell from its formation to its division into two daughter cells. Most of the key events of the cell cycle are restricted to a specific time within the cycle. In this exercise, you will identify when various events occur during the cell cycle.
which solution is hypertonic?
Answer:
the beaker
Explanation:
the beaker (0.5 m salt) has more solvent than the red blood cell (0.1 m salt). Therefore, it means that the red blood cell is hypotonic (more water/solute), and the beaker is hypertonic (more solvent/salt).
hope this helps! <3
A condition that unfavorably affects the normal functioning of the body and/or mind is
called
A Disease
B Reaction
C Asymptomatic
D Lymphatic
when two strains of bacteria with genotypes abcd and abcd are grown together in the lab, a small number of bacteria with the genotype abcd eventually arise. how does this likely occur?
Answer:
These enzymes work in two ways. Some are pre-replicative and search the DNA for nucleotides with unusual structures
Explanation:
This happened through a lateral transfer of genes.
We can arrive at this answer because:
Lateral gene transfer is a system for exchanging genetic material between unrelated bacteria.Bacteria are beings that reproduce without the exchange of genetic material, but in some cases, this can be done with the lateral transmission of genes.This transmission can be done through the process of conjugation, translation, or transformation.The result is that new bacteria are created with a mixture of genes from two unrelated bacteria.
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chicken must be cooked to an internal temperature of 165°f. why must chicken be cooked to this temperature?
Answer: Cooking chicken to at least 165°F makes the chicken safe to eat.
Explanation: This kills all of the bacteria in the meat, leaving it safe to eat.
If you don't fully cook the chicken to at least 165°F, you may eat harmful bacteria which can cause unpleasant illnesses such as Salmonella.
It is advised to follow safe food handling practices.
how can different amino acids affect secondary structure
Answer:
Exposure to positively charged amino acids (arginine and lysine) is found to clearly stabilize the secondary structure. Kinetically, each amino acid promotes folding by generating a large increase in the folding rate with little change in the unfolding rate.
Which example is an internal stimulus? help plz
For example one of the internal stimuli is hunger which is the sign of low energy in the body. It stimulates us to eat something to regain the needed energy. Blood Pressure: Blood pressure is an internal stimulus of mammals that is measured by receptors in arteries.
Answer:
Thirst, Anyone who has ate contaminated food are examples.
Explanation:
Internal stimulus is the change That happens inside the body.An example of an internal stimulus for a Lion is hunger.Four people are spaced at different distances from where a dog is barking. The barking will sound the loudest to the
person who is standing
4 m away
o 15 m away
0 1 m away
O 12 m away
Answer:
C
Explanation:
Four people are spaced at different distances from where a dog is barking. The barking will sound the loudest to the person who is standing near the dog that will experience loud barking voice of dog. Thus the correct option is C that is 1m.
What is sound frequency?
Frequency is referred to as pitch that is the number of times per second that a sound pressure wave repeats itself.
The units of frequency are known as hertz (Hz). Humans can hearing can hear sounds between 20 Hz and 20,000 Hz.
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During respiration, oxygen will combine with haemoglobin to form a new substance. Write down the word equation for this reaction in the space below
Answer:
The overall (unbalanced) chemical equation for cellular respiration is: C6H12O6+O2→CO2+H2O+energy.
name a difference between a plant cell and an animal cell.
Answer:
the cell wall, chloroplasts
Explanation:
plant cells have a cell wall, but animal cells do not
plant cells also have chloroplast, but animal cells don't
El ARNm inmaduro de un gen eucarionte presenta 5 intrones. El tamaño total de los exones es de 3000 bp (pares de bases). ¿Cuántos exones tiene este gen? ¿Cuántos aminoácidos tiene la proteína codificada por este gen?
Answer:
I
Explanation:
tree
Which one is the most venomous snake in the world
[tex]\huge\color{pink}\boxed{\colorbox{Black}{彡Answer彡}}[/tex]
Inland Taipan
74 POINTS!!!!
How could addressing market failure help make an economy more environmentally sustainable?
Answer:
If companies are held accountable upfront for the consequences their actions will have on the environment, their actions may be more environmentally friendly from the beginning.
Can someone help me please this is my last question Ill give brainly when 2 people
answer you have 20 mins!!!
No Bots Or I Will Report!!!!
Answer:
i do not your question I'm sorry
Explain how kinetic energy affects each object as it changes its state of matter:
A) Water boiling:
B) Popsicle freezing:
C) Water condensing on the side of a water bottle:
Answer:
Explain how kinetic energy affects each object as it changes its state of matter:
A) Water boiling:
B) Popsicle freezing:
C) Water condensing on the side of a water bottle:
Explanation:
A) A water boiling will result in evaporation, therefore the particles will move extensively faster than liquid due to it being vapor.
B) A popsicle freezing is originally a solid so it'll have the least amount of kinetic energy as the particles remain fairly slow.
C) Due to the fact that water is condensing, while turning into a liquid. The water condensing on the side of the water bottle would produce a lower kinetic energy level due to the fact that it's becoming a liquid. Though liquids have higher kinetic energy than solids, as gases have a higher kinetic energy compared to liquids.
Evaporation from boiling water causes the particles to move much more quickly than they would in a liquid state.
What is Kinetic energy?A popsicle is initially a solid, it will have the least kinetic energy because the particles are still moving slowly. Because water is condensing as it transforms into a liquid.
Because it is turning into a liquid, the water that is condensing on the water bottle's side would have less kinetic energy.
Gases have a higher kinetic energy than liquids, despite the fact that liquids have a higher kinetic energy than solids.
Therefore, Evaporation from boiling water causes the particles to move much more quickly than they would in a liquid state.
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1. A type of movement of substances across the cell membrane that requires no energy is --
A. cell mediated movement
B. facilitated diffusion
C. active transport
D. receptor protein action
Answer:
B. facilitated diffusion
Explanation:
