Fill in the blanks about each of the following sequential steps of the electron transfer chain (ETC) of the inner mitochondrial membrane.
a. The initial electron donor of the ETC is _______________, which hands its two electrons off to FMN, within Complex I.
b. Electrons from both Complex I and Complex II are ultimately donated to the same molecule, ____________.
c. Within Complex III, electrons from ubiquinol are ultimately donated to ______________, which then passes those electrons on to Complex IV.
d. ______________ is the final electron acceptor of the ETC.
e. The downhill movement of electrons through the ETC creates a proton gradient across the inner mitochondrial membrane. The _________________ subunit of the ATP synthase creates a channel that allows for the downhill movement of protons from the intermembrane space to the matrix.
f. The concomitant release of free energy drives the synthesis of ATP by the ____________ subunit of that same protein.
Answer:
a. NADH
b. Ubiquinone
c. Cytochrome c
d. Oxygen
e. F0 subunit
f. F1 subunit
Explanation:
Electrons enter the Electron Transport Chain (ETC) from Nicotinamide Adenine Dinucleotide (NADH), which is an electron donor generated during different catabolic reactions (e.g., glucose oxidation). Ubiquinone or 'Coenzyme Q' is an electron acceptor that accepts electrons from both Complex I and Complex II and donates electrons to Complex III. The oxygen (O) is the final electron acceptor that accepts the electrons after they have passed through the ETC and ATPase. Complex III (also known as Ubiquinol-cytochrome c oxidoreductase) catalyzes the electron transfer from ubiquinol to Cytochrome c, which is coupled to proton translocation across the membrane. The F0 subunit of the ATP synthase forms a channel (embedded in the mitochondrial membrane) through which protons can flow. Moreover, the F1 subunit of the ATP synthase uses the energy released by the proton electrochemical gradient to drive the synthesis of ATP.
What percentage of the offspring are going to be golden ?
Answer:
what's the complete question?
Answer:
yeah great question.
Explanation:
The rind (skin) colors and patterns of watermelon fruit have been among the major objectives of breeding. If you cross a dark green watermelon with a grey watermelon, then let the F1 generation freely mate you get dark green, medium green, and grey fruits. Explain the inheritance of rind color in these plants
Answer:
Explanation:
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A teacher shows the class a plant and asks the students to predict the biome the plant is from. Which of the following sets of questions would be the most helpful to the students in determining the correct biome for the plant?
What are the main features of tropical climate
Its characteristic is the high temperature and the division of two seasons: rainy in summer and dry in winter. In regions affected by this type of climate, it is not possible to notice the change of seasons.
Which of the following are the principal divisions of the solid Earth ?
Answer:
Hey mate.....
Explanation:
This is ur answer.....
Earth is actually composed of three major parts or layers: the solid earth (which includes the parts near or at the surface, the asthenosphere and lithosphere), the atmosphere (the blanket of air that envelopes the earth), and the hydrosphere (the water parts, including ocean, streams and air moisture).
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URGANT ‼️
Which of the following changes takes place during the first trimester of a
woman's pregnancy?
A. The fetus begins to form teeth.
B. The fetus develops toenails, lips, and eyelashes.
C. The mother feels the fetus move for the first time.
D. The fetus begins rhythmic breathing movements.
Answer:
it's either c or d that's for sure because usually the baby does start to kick for the first time towards the beginning but the fetus begins to move at an early time and begins rhythmic breathing around first or second trimester I'm sorry if it's not exact answer you want but I do have it narrowed down for you
The fetus develops toenails, lips, and eyelashes and The fetus begins rhythmic breathing movements changes takes place during the first trimester of a woman's pregnancy. Thus the correct option is B and D.
What is pregnancy?
Pregnancy is the period in which a fetus develops inside a woman's womb or uterus. Pregnancy usually lasts about 40 weeks, or just over 9 months, as measured from the last menstrual period to delivery. Health care providers refer to three segments of pregnancy is called trimesters.
The baby's brain and spinal cord will develop from the neural tube. The heart and other organs also are starting to form. Structures necessary to the formation of the eyes and ears develop. Small buds appear that will soon become arms.
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Describe why certain traits increase in frequency in a population. Provide ONE example to support your response.
Answer:
When a phenotype produced by certain alleles helps organisms survive and reproduce better than their peers, natural selection can increase the frequency of the helpful alleles from one generation to the next – that is, it can cause microevolution.
Explanation:
Because of having dominant traits certain traits increase in frequency in a population because they have.
What are traits?A phenotypic trait is a specific variant of an organism's observable characteristics. Phenotype refers to any measurable, observable and obvious characteristics of an organism. It can be either hereditary or environmental, but usually occurs as a collection of both.
When any allele tends to determine the phenotype, when passed from parent to child, it called as dominant allele. In case of homzygosity as well as heterozygosity, dominant allele can express itself.
Recessive in contrast is, when genotype is homozygous, the trait expressed is referred to as recessive trait. Therefore, certain traits increase in frequency in a population.
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What would be the best source of information for an essay about sharks?
A) An outdoor magazine
B)A web-based encyclopedia
C)The top hit on a "sharks" web search
D) An educational television program
Answer:
D
Explanation:
The other sources aren't trusted
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So, if life started aquatic how did it evolve for land and why?
Answer:
So when the first animals moved onto land, they had to trade their fins for limbs, and their gills for lungs, the better to adapt to their new terrestrial environment
Explanation:
Answer:
abilites
Explanation:
1. Which of the following is NOT an essential characteristic required of an organism to be classified in the phylum Chordata?
a. Dorsal, hollow nerve cord
b. Notochord
c. Pharyngeal pouches
d. Vertebrae
2. An animal’s kidneys pump ions across cell membranes, allowing water to move by osmosis. This helps the animal to…
a. Remove extra ions
b. Conserve water
c. Reduce ion concentration
d. Reduce water concentration
3. Which TWO of the following are evidence that meiosis has just occurred in a life cycle of an organism?
a. A diploid (2N) zygote
b. A diploid (2N) adult organism
c. A haploid (1N) egg
d. A haploid (1N) sperm
4. Which of the following animals reproduces by external fertilization, where the female releases her eggs outside of her body before the male covers them with his sperm?
a. Salmon
b. Deer
c. Duck
d. Goose
5. Which of the following is an example of insight learning?
a. a chimpanzee figuring out how to use a new tool to obtain a hidden food source
b. a dog drooling when it hears a can of food being opened
c. a squirrel ignoring passing cars as it eats nuts a few feet from the road
d. a baby sea turtle going into the ocean right after it hatches
6. According to the image below, which of the following animals does not have true bones?
a. salamander
b. coelacanths
c. sharks
d. birds
7. Which two phyla of animals are probably closely related because they are both classified as deuterostomes due to having the same pattern of embryonic development?
a. Arthropods and cnidarians
b. Sponges and nematodes
c. Annelids and mollusks
d. Chordates and echinoderms
8. Which of the following are both characteristics of plants but NOT animals?
a. chloroplast and lysosomes
b. cell wall and chloroplasts
c. cell membrane and mitochondria
d. cell wall and cell membrane
9. An animal with sharp canine teeth is adapted for what type of food source?
a. meat
b. green, leafy plants
c. seeds
d. insects
10. When you investigate an animal, you find an unfamiliar organ, and you notice that it’s connected to the outside of the body. It has a lot of very thin membranes that surround small open spaces. These membranes have a lot of surface area, stay slightly moist, and have many small blood vessels just under the surface. What is this organ probably used for?
a. Obtaining food
b. Producing offspring
c. Bringing in oxygen
d. Protection and immunity
Answer:
1c. Pharyngeal pouches
2d. Reduce water concentration
3b. A diploid (2N) adult organism
4c. Duck
5a. a chimpanzee figuring out how to use a new tool to obtain a hidden food source
6a. salamander
7c. Annelids and mollusks
8b. cell wall and chloroplasts
9c. seeds
10d. Protection and immunity
Since we can't drink ocean water due to its salt content, why is polluting the oceans so much a concem for people? Write your response in the essay box below.
answer:
we can't pollute water because there are creatures and organisims that live in the water so if we pollute it then they will die, besides you can filter the water to get rid of salt then you're able to drink the water and also use it for many other purposes.
Answers to all 6 questions please (83points)
Try and get all 6 right
In pea plants, flower color and the length of the flowers pollen grains are genetically determined.
a. True
b. False
The expression of flower color -qualitative character- and the length of the pollen grains -quantitative continuous character- is controlled by genes. Option A) TRUE.
How are characters expressed?Characters might be either qualitative or quantitative, discrete or continuous. In any case, genes are the units that control the expression of these characters.
A gene might be diallelic or multiallelic, and a character might be coded either by a single gene or by multiple genes.
The expression of the individual's phenotype varies according to the interaction between the involved genes and the inheritance pattern.
So characters are genetically determined. However, we need to consider that phenotype is also influenced by the environment.
Individuals are exposed to different environmental pressures that might lead them to express a different phenotype.
The phenotype depends on the interaction between the genotype and the environment. The environment, for instance, has a significant influence on the expression of quantitative characters like the length of the pollen grain.
In the exposed example,
flower color is a qualitative characterthe length of the flowers pollen grains is a quantitative continuous character
Both of them are coded by genotypes. This is, their expression depends on the involved genes. However, in the case of lengths, the environment also plays a significant role in its expression.
Option A is correct. The statement is TRUE.
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PLEASE HELP ME ON BOTH QUESTIONS ASAP!!!!!! GIVING AWAY 14 POINTS!!!!
PLEASE HELP!!!!!!
The process that produces 2 genetically different cells is
A) mitosis
B) mitosis and meiosis
C) meiosis II
D) meiosis I
Answer:
b
Explanation:
Meiosis has both similarities to and differences from mitosis, which is a cell division process in which a parent cell produces two identical daughter cells. Meiosis begins following one round of DNA replication in cells in the male or female sex organs.
Question 3
Which of the following refers to a community of living organisms and the way they interact with nonliving parts of their environment?
А
trophic
В
biome
С
habitat
D
ecosystem
Answer:
Which of the following refers to a community of living organisms and the way they interact with nonliving parts of their environment? Ecosystem.
Explanation:
Hope you have a great rest of your day.
1.
The following table describes the resistance of two different wires.
Based on this table, which of the following is most likely true?
Wire A is longer and thinner than wire B
Wire A is shorter and thicker than wire B
Wire A is a poor conductor of electric current
Wire B is a good conductor of electric current
Answer:
b
Explanation:
Answer:
B
Explanation:
The correct answer is option B
BRAINILIEST PLEASEI need help ASAP. Don’t answer if you don’t know, but if you answer all of them I will give you brainliest.
Answer:
first of all is this an In class experiment or a video you are going to wach to get the answer to what will happen to the stuff. they are all a production involving decomposition bread cust might mold and the glass bottle might break. the plastic bag might crumple the juice carton might get soggy and fall apart. and the aluminum foil might stay the same. thoes are just my predictions but these are option questions and predictions they do not have to be right just a best guess.
4. Describe a practical application of chromatography and give an example that is unrelated to photosynthesis.
Answer:
Explanation:
It is sometimes used in medicine to examine body fluids. The chemicals of interest (ones that should not be in the body) will separate out differently than the fluids that should be there.
Need help with 2. and 3. Thanks!
Answer:
Hair has 2 checks
Explanation:
I believe because if you read it you will see
Answer:
2 = shark, gorilla, lizard
3 = salamander, shark
Explanation:
Among Delta-back stripped fish, there are two genes that segregate independently of one another. Suppose the alleles at the first locus are A (dominant) and a (recessive) and the alleles at the second locus are B (dominant) and b recessive). If an AABB fish mates with an aabb fish, and their offspring are inter-crossed, the proportion of F2 fish that show a recessive phenotype at the first locus and a dominant phenotype at the second is:
Answer:
4/16
Explanation:
It is given that the alleles of the first locus = A dominant and recessive a
The allele of the second locus = B dominant and the recessive b.
Now if fish with AABB mates with the aabb fishes, then to tell the proportion of the F2 fish which shows either the dominant phenotype at the [tex]$\text{first locus}$[/tex] and also a recessive phenotype at the [tex]$\text{second locus}$[/tex].
So for this, the recessive phenotype at the [tex]$\text{first locus}$[/tex] as well as the recessive phenotype at the [tex]$\text{second locus}$[/tex] is in the ratio of 4/16.
describe mechanism inhalation in mammals
All mammals have lungs that are the main organs for breathing. Lung capacity has evolved to support the animal's activities. During inhalation, the lungs expand with air and oxygen diffuses across the lung's surface, entering the bloodstream. During exhalation, the lungs expel air and lung volume decreases.
Which of the following is true of artificial selection?
O A. It is identical to natural selection.
O B. It is a type of natural selection.
C. It is not a true evolutionary mechanism.
D. It is directed by humans.
SI
: Answer any fou
What is Pollution?
Name two pollut
in Cust
Answer:
Pollution is the presence of harmful materials in the environment of a substance that has harmful or poisonous effects. Nitrogen dioxide (NO2) and Carbon monoxide (CO) are 2 pollutants of air and Industrial Waste and Sewage and Wastewater are 2 pollutants of water.
What will the result be if a purebred tall pea plant is mixed with a purebred short pea
plant?
А) A short pea plant, due to chance
B) A short pea plant, because short is the dominant allele
C) A tall pea plant, because tall is the dominant allele
VONEN
D) A tall pea plant, due to chance
Answer:
C
Explanation:
Answer:
C) A tall pea plant, because tall is the dominant allele
descriptive essay about my hometown
Answer:
I love my hometown as I love my home and I like to stay in the town streets as I stay in the rooms of my house.”
Everyone loves his hometown or city dearly. It is like loving the home or the place where one passes one’s life. My town is close to a canal that flows out of the river some eight kilometers away. Gardens and parks surround it on all sides. Beautiful flowers and tasty fruits of all the seasons are to be found welcoming you as you approach the town. Grassy grounds border the town where children, men, and women are found playing in the afternoon.
I love my hometown as I love my home and I like to stay in the town streets as I stay in the rooms of my house.”
Everyone loves his hometown or city dearly. It is like loving the home or the place where one passes one’s life. My town is close to a canal that flows out of the river some eight kilometers away. Gardens and parks surround it on all sides. Beautiful flowers and tasty fruits of all the seasons are to be found welcoming you as you approach the town. Grassy grounds border the town where children, men, and women are found playing in the afternoon.
The town has two colleges, one for boys and another for girls. It also has four high schools and six middle schools. The students are mostly from middle-class or rich families, but now some working-class people like laborers have started sending their children to schools. We have quite high standards of education as we have in some famous colleges and schools in the big cities. The reason is the hard work that teachers put in and the interest that most of the students take in studies.
The town has a fine public hospital where most government doctors attend to patients as well as they can the public dislikes the few careless doctors. They are often transferred on the public complaint. Of course, the hospital is often overcrowded and suitable medicines are in short supply. The richer people go to private clinics where they get medical treatment of their choice.
The town municipal committee keeps the town clean, but sometimes garbage heaps collect, and the whole place begins stinking (giving an unpleasant smell). The electricity department takes care that the streets are brightly lit at night. When people have complaints about its working, it begins performing better. The police and other government departments in the town, on the whole, have been performing their duties equally well. The people of the town have now started complaining of rising corruption in government offices. It is time we checked it with most strictly. When I am away from my town, I feel as if I am away from something dearest in life.
bridgett is riding her bicycle up the hill which statements are correct
Answer:
A, B, C, D and F
Explanation:
i did the assignment
3. (a)
Explain why sweat accumulates on a person's skin in a hot humid
Environment
Answer:
In humid conditions where surrounding air cannot hold further water vapour, sweat evaporates slowly, if at all. As a result the body heats up. it is difficult for the sweat to evaporate and in high humidity conditions we tend to sweat more. This explains why it feels so much hotter in high humidity.
What should be done with a used needle??
Answer:
It should be disposed of because its dirty and no one wants a disease from it if it goes into you somehow
Explanation: