Answer:
Kreb cycle is the sequence of reactions by which most living cells generate energy during the process of aerobic respiration. It takes place in the mitochondria, using up oxygen and producing carbon dioxide and water as waste products, and ADP is converted to energy-rich ATP.
Explanation:
Definition:
A cycle of reactions catalyzed by enzymes in which the pyruvate derived from nutrients and converted to Acetyl Coenzyme A is completely oxidized and broken down into carbon dioxide and water to produce high-energy phosphate compounds, which are the source of cellular energy.
In eukaryotes, the Krebs cycle reactions take place in the mitochondrial matrix, a dense solution that surrounds the mitochondria crests: in addition to water, the matrix contains all the enzymes necessary for the biochemical reactions of the cycle, coenzymes, and phosphates.
Equation:
The overall reaction for the citric acid cycle is as follows: acetyl-CoA + 3 NAD+ + FAD + GDP + P + 2H2O = CoA-SH + 3NADH + FADH2 + 3H+ + GTP + 2CO2.
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Cells without a nucleus are
Answer: prokaryotic cells
Explanation:
A prokaryotic cell is a cell without a nucleus. Since this is a simple definition I cannot explain much further, but an example of a prokaryotic cell is bacteria.
DNA molecules are double stranded and RNA molecules are _____ stranded
Answer:
Single stranded
Explanation:
Hemophilia is a disease that causes uncontrollable bleeding. If a father has it, all of his daughters will be carriers of the disease, and about half of his sons will have the disease.
Which macromolecule is involved in how hemophilia is passed from parents to their children?
Explanation:
Hemophilia is a disease that is characterized by an abnormal blood clotting process. There are many different proteins that are involved in the clotting process and a single mutation or change in one of them could result in serious effects. Hemophilia is characterized by an abnormal version of one of the many proteins involved in the clotting process, the proteins that are commonly affected are the coagulation factor 8 or 9 (VIII or IX). These abnormal proteins are caused by a mutation in the gene (within the DNA) that codifies for the production of each protein. In other words, a mutation in the part of the DNA, (gene F8) will lead to a dysfunctional coagulation factor VIII and a mutation in the gene F9 will lead to a dysfunctional coagulation factor IX. Importantly, these mutations could be inherited and could cause hemophilia. Therefore, an error in the DNA and subsequently, an error in the protein will cause hemophilia. Finally, it is important to mention that there are other types of hemophilia that are not caused by the above-mentioned mutations, such as acquired hemophilia.
Answer:the macromolecule which is involved in haemophilia which is passed from the parents to the children is the defect in factor number 8 of clotting cascade.
Explanation:
A sudden, violent, involuntary muscle contraction of a group of muscles caused by a disturbance in brain function is called a ______________________.
Answer:
seizure
Explanation:
1) What do you think made Rachel Carson's book, Silent Spring, so inspiring to readers?
I need help please!!! I swear this isn’t even in my text book!
Answer:
[tex]\huge\boxed{\sf Option \ B. }[/tex]
Explanation:
Cell Membrane:
are the outermost surface of the cell for animals and secondmost surface of the cell from plants after cell wall.Surface of the cell membrane:
Cell membrane is partially and selectively permeable which means that it only allows certain substances in and out of the cell.[tex]\rule[225]{225}{2}[/tex]
Which of the following precautions can help prevent mother-to-child HIV transm ensuring that an infected mother eats 10% more calories ensuring that an infected mother uses condoms starting an infected mother on antiretroviral treatment ensuring that an infected mother avoids antiretroviral treatment Question 3
A: Ensuring that an infected mother eats 10% more calories
B:Ensuring that an injected mother uses condoms
C:starting an infected mother on antiretroviral treatment
D:Ensuring that an infected mother avoids antiretroviral treatment
Answer:
C.
Explanation:
Antiretroviral treatment is the most effective way to prevent mother to child infections assuming she is already pregnant.
Wearing condoms only protects others
More calories only needs she's going to be feeding the baby more.
Avoidjng treatment only makes it worse thus making baby more susceptible to catching it.
The color variation which enables some organisms to survive because their color keeps them from being easily seen in their environment is called:.
how can the length of a DNA fragment be estimated in gel electrophoresis
Answer: At the same time as the samples, a DNA marker with known length fragments is routinely passed through the gel. You can estimate the length of the DNA fragments in the samples by comparing the bands of the DNA samples with those of the DNA marker.
Explanation:
What is the effect of hyperinsulinism on the metabolism of carbohydrates, amino acids, and lipids by the liver
Hyperinsulinism produces an excessive uptake of glucose by the liver (hypoglycemia). It also leads to an interruption in amino acid and fatty acid catabolism.
What is hyperinsulin?Hyperinsulin is a condition associated with the excessive production of insulin, a key hormone in glucose metabolism.
The main effect of hyperinsulinism is an excessive uptake of glucose by the liver, which is associated with hypoglycemia.
Hyperinsulin can also produce a chronic interruption in the amino acid and fatty acid metabolism (catabolism).
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When DNA is subjected to high temperatures, what happens?
The DNA molecule crystalizes.
The antiparallel strands reorient themselves to become parallel.
The phosphodiester bonds are broken.
The double helix converts into a triple helix.
The hydrogen bonds that hold the strands together are broken.
Answer:
The hydrogen bonds that hold the strands together are broken.
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Vicky made the following list to describe humidity:
It is the amount of water vapor in the air.
It is shown on weather maps in millimeters or in inches.
It can seen on cold surface as water droplets.
Which statement best describes why the list is incorrect?
It can be seen on hot surfaces as water droplets.
It is shown on weather maps as a percent.
It is the amount of moisture in the air.
It is the temperature of water in the clouds.
Answer:
I think the answer is C
Explanation:
What are the structures of the circulatory system?.
Answer:
The circulatory system consists of three independent systems that work together: the heart (cardiovascular), lungs (pulmonary), and arteries, veins, coronary and portal vessels (systemic). The system is responsible for the flow of blood, nutrients, oxygen and other gases, and as well as hormones to and from cells. An average adult has 5 to 6 quarts (4.7 to 5.6 liters) of blood, which is made up of plasma, red blood cells, white blood cells and platelets.
PLEASE HELP!!!!!!!!! WILL GIVE 60 PTS, NOT A JOKE!!!!
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In some cases of head injuries, the cerebrum may be affected. This type of injury could cause a loss of _________ and impaired __________.
1) a. breathing regulation
b. reflexive movement
c. voluntary movement
2) a. heart rate
b. involuntary movement
c. speech
In some cases of head injuries, the cerebrum may be affected. This type of injury could cause a loss of voluntary movement and impaired speech
An individual of genotype TtFFgg mates with an individual of genotype ttFfgg. About how many of their 100 offspring would you expect to be heterozygous for all three traits
Answer:
0
Explanation:
Heterozygous means that they have an allele for both traits and is in the form (Aa) meaning they have both the dominant and recessive trait.
We notice that the third trait, represented by 'g', is in the form gg for both individuals. Since they are both lowercase and the same allele, they are both hom0zygous for that trait, meaning there is no way the offspring can get a dominant trait to make their genotype Gg.
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Which group includes ALL renewable resources?
a) coal,trees,water,oil
b)water, wind,sun,plants
c)minerals,sun,natural gas, water
Answer:
option B
Explanation:
They are all renewable resources
In escherichia coli, the c ring of atp synthase is composed of 12 c subunits. For one fully productive revolution of this ring, how many protons are transported across the membrane for each molecule of atp produced?.
Answer: The membrane-spanning component of human mitochondrial ATP synthase (best known as FO, reflecting the fact that it can be inhibited by oligomycin) is composed by no less than nine polypeptides (a, b, c, d, e, f, g, F6 and 8), while the soluble catalytic core of the complex (F1) consists of five different subunits
Explanation: i checked it with my teacher
Which of the following is the classic hot and dry desert? a. Arid desert b. Coastal desert c. Cold desert d. None of the above.
Answer:
a
Explanation:
fill out the following about genetics:
Answer:
Define alleles:
Alleles are alternate forms of genes that are visible by mutations. They are found at a specific locus in a chromosome.
A. The genotypes of the parents: Ww and ww
B. The genotypic ratio of the offspring: 2:2
C. The phenotypic ratio of the offspring: 2:2
Explanation:
A white-fruited plant is crossed with a yellow-fruited plant. According to the instructions, the allele for white-fruited plants are dominant over the allele for yellow-fruited plants, this means that in order a plant to be white-fruited, they must either have the alleles Ww or WW. In this case, it is better to cross Ww, as all of the offsprings are yellow-fruited (ww).
Whenever we cross Ww and ww, we have a fifty percent chance of the offsprings either having the alleles "Ww" or "ww".
There are four smaller squares in a punnet square, and half of the smaller squares code for the alleles "Ww" and the other half code for the alleles "ww". This means that the genotypic ratio of the offspring would be 2:2, as 2 of the smaller squares code for "Ww", and the other 2 code for "ww".
Since "Ww" has a dominant allele, the phenotype for the organism with this genotype would be white-fruited, and for "ww", the phenotype for the organism would be yellow-fruited. This means that in this case, there would be a 50% chance for a white-fruited plant, and a 50% chance for a yellow-fruited plant. This is why the phenotypic ratio of the offspring would also be 2:2, as half of the smaller squares code for a plant with a white-fruited phenotype, and the other half of the smaller squares code for a plant with a yellow-fruited phenotype.
12. In the space below, list the characteristics which are referred to as "certain similarities” that
the basis for classifying organisms in the same basic group.
What binds to this structure on the hemoglobin molecule?.
Answer:
It is the iron atom that binds oxygen as the blood travels between the lungs and the tissues. There are four iron atoms in each molecule of hemoglobin, which accordingly can bind four molecules of oxygen.
Kingdom Plantae Question 12 options: Eukaryotic Prokaryotic Unicellular Multicellular Autotrophic Heterotrophic.
Answer:
Eukaryotic Multicellular Autotroph
If the base sequence on a DNA molecule is ATC, what would be the mRNA codon sequence?
If the base sequence on a DNA molecule is ATC then UAG will be the mRNA sequence.
How many mRNA codons are there?The four nucleotides found in mRNA — A, U, G, and C — can be combined in a total of 64 different ways because codons are three-letter structures. These 64 codons are made up of 61 amino acid codons and three stop signal codons, which signal the completion of protein synthesis.
A codon is a specific sequence of nucleotides on an mRNA that denotes either a stop signal during protein translation or a specific amino acid. A nucleobase (also known as base), a sugar, and a phosphate group make up a nucleotide.
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According to the model below, how long ago did the common ancestor of all the organisms on the
phylogenetic tree exist?
Millions of Years Ago
Answer
about 3.9 billion years ago
about 3.9 billion years agoThe most recent common ancestor of all currently living organisms is the last universal ancestor, which lived about 3.9 billion years ago.
Can someone help me find real images for Metaphase?
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similar body structure of a chicken wing? (example: pelvis in fish/cetaceans, feet/)hoof of a horse…)
Explanation:
body structure of chicken is feather
Why has Earth’s climate changed so rapidly in recent years?
Answer:
increased activities that releases greenhouse gas in the world
Explanation:
Human activities in the world leads to production of greenhouse gas. These greenhouse gases trap the radiation from the sun and makes the earth to be in a high temperature.
The third one is correct though burning fossils releases CO2 gases and many more.
The fetus receives antibodies from the mother that last several weeks after birth. This is an example of _____ immunity
Answer:
Natural passive
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What do you do for scurrying good marks as you want?
Answer:
you have to read and understand what you are going to write about.
Which of the following farming approaches can grow food crops with less land use?
a. organic farming
b. vertical farming
c. industrial farming
d. biodynamic farming
Answer:
B. vertical farming
The farming approach that can grow food crops with less land use is option b, or "vertical farming," as it is an innovative farming approach that involves growing crops in vertically stacked layers.
What is vertical farming?Vertical farming is an innovative agricultural technique that involves growing crops in vertically stacked layers using artificial lighting and a soilless medium. The plants are grown in a controlled environment where all aspects of the growth process, such as temperature, humidity, and lighting, are carefully managed to optimize plant growth and yields, and vertical farming systems can be located in urban areas or other locations where land is limited or expensive. By growing crops vertically, the amount of land needed to produce a given amount of food is greatly reduced as compared to traditional farming methods that require large amounts of horizontal land.
Hence, the farming approach that can grow food crops with less land use is option b, vertical farming.
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