Answer:
The correct answer is: D
Explanation:
(a) This process does not occur during glycolysis, it occurs after glycolysis since pyruvate is generally accepted to be the last product of glycolysis
(b) Phosphofructokinase does not produce two molecules of glyceraldehyde 3-phosphate but rather produces of one molecule of glyceraldehyde 3-phosphate and dihydroxyacetone phosphate
(c) During anaerobic conditions in mammals, pyruvate is converted to lactate by the enzyme lactate dehydrogenase. It can actually cause the accumulation of lactic acid/lactate in the muscle which causes muscle fatigue but does not cause buildup of pyruvate in the cytosol.
(d) In the fate of pyruvate, the pyruvate dehydrogenase complex produces CO2, acetyl-CoA and NADH in the mitochondrial matrix. The acetyl-coA produced thereof serves as a precursor for the citric acid cycle.
LIQUID DENSITY COLUMN
-Olive Oil
-Vegetable Oil
please help me with this question thanks:)
Answer: Vegetable oil
Match the following terms describing the physical/mecahnical events with the correct phases of the cardiac cycle. Each phase may be used more than once.Question Selected MatchAll 4 cardiac valves are closed and all 4 chambers are relaxed during this phase.The maximum amount of blood is in the ventricles at the end of this phase.The pressure in the ventricles is higher than in the atria, but lower than in the arteries, during this phase.The semilunar valves are open and the AV valves are closed during this phase.The atria contract at the end of this phase.The pressure in the ventricles is higher than the pressure in both the atria and the arteries during this phase.Systole begins with this phase.All Answer ChoicesA.ventricular ejectionB.ventricular fillingC.isovolumetric relaxationD.isovolumetric contraction
Answer:
1. Isovolumetric relaxation.
2. Ventricular filling.
3. Isovolumetric contraction.
4. Ventricular ejection.
5. Ventricular filling.
6. Ventricular ejection.
7. Isovolumetric contraction.
Explanation:
In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.
Generally, the cardiac cycle occurs in two (2) stages;
Diastole: in this stage, the ventricles is relaxed and would be filled with blood. Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.The following terms describe the physical or mecahnical events with the correct phases of the cardiac cycle in mammals (human beings).
1. Isovolumetric relaxation: All 4 cardiac valves are closed and all 4 chambers are relaxed during this phase.
2. Ventricular filling: The maximum amount of blood is in the ventricles at the end of this phase.
3. Isovolumetric contraction: The pressure in the ventricles is higher than in the atria, but lower than in the arteries, during this phase.
4. Ventricular ejection: The semilunar valves are open and the AV valves are closed during this phase.
5. Ventricular filling: The atria contract at the end of this phase.
6. Ventricular ejection: The pressure in the ventricles is higher than the pressure in both the atria and the arteries during this phase.
7. Isovolumetric contraction: Systole begins with this phase.
what effect would constriction of the blood vessels have in the body
Answer:
higher blood pressure
Explanation:
when the vessels constrict they get smaller therefore in order for the blood to be pumped through the body the heart would have to work harder resulting in a higher blood pressure
Answer:
increased blood pressure resulting in risk of heart attack
Look at your model and think about the relationship between oxygen and carbon dioxide in the sealed jar. Which of these statements is true?
Plants release only carbon dioxide during photosynthesis.
Plants use oxygen during photosynthesis.
Plants and animals use oxygen during respiration.
Plants and animals release oxygen during respiration.
Answer:
Plants use oxygen during photosynthsis.
Explanation:
Oxygen and carbon dioxide in the sealed jar relationship between oxygen and carbon dioxide is that Plants and animals use oxygen in respiration, hence option c is correct.
What is respiration?Water and carbon dioxide are converted into oxygen and glucose in photosynthesis and plant uses glucose and releases oxygen as a byproduct.
Oxygen and glucose are converted to water and carbon dioxide in cellular respiration. By-products of the process include carbon dioxide, water, and ATP, which are turned into energy.
Carbon is taken out of the atmosphere by photosynthesis and put back in by cellular respiration.
Therefore oxygen and carbon dioxide have a relationship in respiration, hence option c is correct.
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what special function does the spleen of the seal do
what is thesaurus and online resources?
Answer:
thesaurus is a book that is filled with all types of synonyms for words
synonyms are words that are different but same in meaning
eg: yummy
another word for yummy is delicious
so delicious is a synonym that is included in the book named thesaurus
hope it helps
; )
Explanation:
DNA undergoes the process of replication to produce new strands of identical DNA before cell divisions. Describe the basic dna replication. I will give you brainliest
Answer:
Please mark as Brainliest
Explanation:
Replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. DNA replication is one of the most basic processes that occurs within a cell. Each time a cell divides, the two resulting daughter cells must contain exactly the same genetic information, or DNA, as the parent cell. To accomplish this, each strand of existing DNA acts as a template for replication
Step 1 Replication Fork Formation. Before DNA can be replicated, the double stranded molecule must be unzipped into two single strands
Step 2 Primer Binding. The leading strand is the simplest to replicate
Step 3 Elongation
Step 4 Termination
Students in a science class visited four local ecosystems. The students observed the species present in each ecosystem and recorded their observations in the table.
Based on these observations, which ecosystem is likely to be the least sustainable?
A.Ecosystem 1, because it has the fewest species
B.Ecosystem 2, because it includes both aquatic and terrestrial species
C.Ecosystem 3, because it has few predators
D.Ecosystem 4, because it supports many animals
the answer is A
this is because in ecosystem 1 there are only predators and no other species are observed. therefore predators have less food to eat thus they will die of hunger or move to another ecosystem
This is because in ecosystem 1 there are only predators and no other species are observed. therefore predators have less food to eat thus they will die of hunger or move to another ecosystem.
What is Ecosystem?
An ecosystem is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life.
Ecosystems contain biotic or living, parts, as well as abiotic factors, or nonliving parts. Biotic factors include plants, animals, and other organisms. Abiotic factors include rocks, temperature, and humidity.
Every factor in an ecosystem depends on every other factor, either directly or indirectly. A change in the temperature of an ecosystem will often affect what plants will grow there, for instance.
Therefore, This is because in ecosystem 1 there are only predators and no other species are observed. therefore predators have less food to eat thus they will die of hunger or move to another ecosystem.
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Explain why the steroid hormone estradiol (MW 272) readily crosses membranes by simple diffusion but the much smaller H requires transport proteins
Answer:
Estradiol has a higher partition coefficient than H+ ions
Explanation
Estradiol is a non-polar and hydrophobic molecule that has a higher partition coefficient than H+ ions, it means that the cell membrane is more permeable to this molecule because it can dissolve in and diffuse within the hydrophobic phase of the membrane. The movement of polar charged molecules (even small H+ ions) requires the input of energy to be able to dissolve within the lipid bilayer. In consequence, the movement of H+ ions requires proteins capable of transporting these protons through the membrane.
6.
What is the meaning of the word regulate in paragraph six?
The water cycle describes how water moves through the earth's crust atmosphere and
oceans. Heat from the Sun causes liquid water to evaporate from rivers, lakes and oceans
and it becomes a gas called water vapour.. As the gas rises, it condenses and
to create droplets.
Water returns to the ground as solid hail and snow or liquid rain and sinks into the earth.
Below the ground it forms
where water is held between grains in rock
layers, and
Where aquifers intersect or cut the surface of the ground
the liquid water flows out to form
and
Differences in
elements, such as oxygen, can be used to estimate the and
of
water. A process is an event or series of events that cause a change to occur.
Answer:
nose picks
Explanation:
lol
Answer:
see the answer above
Explanation:
what are reponsibilities only given to the executive branch
Answer:
espero te ayude
Explanation:
El poder ejecutivo es el responsable de la gestión diaria del Estado, concibe y ejecuta políticas y leyes que tienen que ser aplicadas; representa a la nación en sus relaciones diplomáticas; sostiene a las fuerzas armadas y en ocasiones aconseja con respecto a la legislación. En los estados democráticos,
Describe how a rainforest can reach a point when it cannot be restored by secondary ecological succession
Answer:Although the secondary forest will be low in diversity and poorly developed, the forest cover will be adequate for some species to return (assuming they still exist). The solution must be based on what is feasible, not overly idealistic, and depends on developing a new conservation policy built on the principle of sustainable use and development of rainforests. Beyond the responsible development of rainforests, efforts to rehabilitate and restore degraded forest lands along with the establishment of protected areas are key to securing rainforests for the long-term benefits they can provide mankind.
Explanation:
i lloke dit up online because i have not did this yet
A very high damaged leads to no restoration of rainforest by secondary ecological succession.
A rainforest can reach a point when it cannot be restored by secondary ecological succession when the large portion of the rainforest is destroyed and most of diversity is vanished. At this time, restoration is impossible due to very high damages.
Ecological resilience is the ability of an ecosystem to be restored through secondary ecological succession after a severe disturbance. Rainforest have a high biodiversity that helps it to resist damage but at a certain limit so we can conclude that very high damaged leads to no restoration of rainforest by secondary ecological succession.
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Fats are the predominant forms of a class of biological molecules called _______, which also includes fatty acids and steroids, among other molecules. These biomolecules readily dissolve in _______ solvents such as hexane and chloroform. Because of their insolubility in water, fats and other biomolecules in this class are said to be_______. Triacylglycerols, also known as triglycerides, are a storage form of fat found in adipose tissue that consist of glycerol bound to_______. These fats are categorized based on the bonding of the carbon atoms in the chain. Fats that contain chains with no double bonds are classified as_______ , whereas those that contain double bonds in the carbon chain are _______.
Answer:
1. Lipids
2. Non-polar
3. Non-polar
4. Fatty acids
5. Saturated fats
6. Unsaturated fats
Explanation:
LIPIDS are one of the four major biomolecules in living systems. A form of lipids are fats which constitute most lipids i.e. predominant. Lipids also includes fatty acids, steroids and other molecules.
Lipid biomolecules readily dissolve in POLAR solvents such as hexane and chloroform. Because of their insolubility in water (polar solvent), fats and other biomolecules in this class are said to be NON-POLAR.
Triacylglycerols, also known as triglycerides, are forms of fat that is composed of a glycerol molecule bound to three molecules of FATTY ACIDS.
Based on the bonding of the carbon atoms in the chain, fats that contain chains with no double bonds are classified SATURATED FATS, while those that contain double bonds in the carbon chain are UNSATURATED FATS.
Sodium (Na) and chlorine (CI) combine to form sodium chloride (NaCl), which is commonly
known as
What is meant by the concept of development?
Answer:
A process that creates growth, progress, positive change or the addition of physical, economic, environmental, social and demographic components.
If all of your cells have the same DNA, how is it possible for one of
stem cells to become a skin cell and another of your stems cells to
become a bone cell?
Answer: daddy chill and yes they are
Explanation:
Describe what happens in your central nervous system when you prepare and eat breakfast. Start with objects in the environment and be specific.
Answer:
CNS controls eating by homeostatic mechanisms that interact with different cognitive control systems (e.g., memory, reward, attention, etc)
Explanation:
In the brain, eating control is modulated by different systems:
1- Homeostatic control: the hypothalamus plays a key role by controlling both the appetite and food intake
2- Attention: the parietal and visual parietal cortices are involved in sensory perception and integration
3- Emotion and memory: amygdala and hippocampus
4-Cognitive control: the prefrontal cortex (i.e., executive functions)
5-Reward: associated with the functioning of the striatum
In the first place, external signals such as, for example, neurotransmitters and hormones, are received by the hypothalamus that interacts with different systems (reward, emotion, memory) in order to achieve a homeostatic control of eating. Neuronal stimulation (for example, when we view foods), is achieved by the supply of oxygenated hemoglobin.
In which layer of the atmosphere does the aurora borealis form? O A. The troposphere OB. The mesosphere O C. The thermosphere O D. The stratosphere SUBM
Answer:
The Thermosphere
Explanation:
Just took the test on A P E X, it's right. Hope this helps :)
Aurora Borealis forms in the thermosphere layer of the atmosphere. Therefore, option "C" is correct.
What are the different layers of the atmosphere?The atmosphere is made up of different layers which protect the life on Earth and make it habitable. There are four layers of the atmosphere troposphere, stratosphere, mesosphere, and thermosphere.
In the troposphere, the temperature rises from bottom to top. The ozone layer is present in the stratosphere. This is also known as the flying zone as no clouds are present in this layer. In the mesosphere, the air is much colder as there are gas molecules present that absorb solar radiation whereas the density of molecules in the thermosphere is very low.
The atmospheric layers protect the life on Earth.
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how does Asexual reproduction happen
Answer:
The reproduction of organisms without the need for sexual intercourse.
Explanation:
Which of the following is not one of the three steps (processes) involved in urine formation?
The following is not one of the three steps (processes) involved in urine formation - Erythropoietin production.
ErythropoietinIt is a hormone that has no role in urine production. The steps of urine production are:
glomerular filtration - the filtration of blood, which is carried out by the glomerulus tubular reabsorption - The tubular epithelial cells in different segments of the nephron perform absorption (reabsorption) either by active or passive mechanismstubular secretion - helps in the maintenance of an ionic and acid-base balance of body fluids.Learn more about urine production:
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At the end of glycolysis, there is a net gain of _____ ATP and 2 molecules of ________ are made.
Question 3 options:
4, NAPH
2, pyruvic acid
4, glucose
2, NAD+
why the numerical values on the X and Y axis has to be consistent?
Answer:
Each axis needs a scale to show the range of the data on that axis. The low end of the scale may be zero or a round number value slightly smaller than the smallest data point. The high end of the scale is usually a round number value slightly larger than the largest data point. The scale is measured off in major and minor tick marks. Typically the scale runs from low to high in easily counted multiples like 10s, 50s, 100s, etc. When graphs are compared side-by-side, consider scaling them to the same data range to make comparisons easier.
Explanation:
thx
Find, in km/h, the rate at which a car travels if it
goes 38.5km in 35 min.
3. What are the different science processes demonstrated in the activities
performed?
When you get home from school, you decide to make some ramen noodles for an after school snack. You notice that the pack of ramen calls for 3 cups of water per pack. You add and heat up the water and you dump your ramen in the pot. You let the ramen noodles cook in the water for 5 minutes. As your are straining your ramen noodles, you notice the noodles are larger and there is less water in the pot. Explain what process just happened and why. How does this relate to the process of
cell?
Answer:
Osmosis.
Explanation:
Osmosis occurs in the noodles because the water moves inside the noodles which make them swells. Osmosis is a process in which particles moves from the external environment into the cell through a semi permeable membrane. The water present goes inside the noodle and the noodles increases in size just like cells when the water moves inside the cell it swells due high concentration of water.
Answer:
osmosis
Explanation:
Identify events that contribute to the termination of a response in the GPCR, or 7TM receptor, pathway. Select all that apply.
Answer:
Multiple choices:
1. G? dissociates from the G?? subunits.
2. The ligand dissociates from the receptor, which resumes its inactive conformation.
3. The receptor is inactivated by phosphorylation of Ser or other residues on its intracellular domain.
4. G? releases GDP and binds GTP.
5. G? hydrolyzes GTP to GDP and Pi.
Answers
The ligand dissociates from the receptor, which resumes its inactive conformation
The receptor is inactivated by phosphorylation of Ser or other residues on its intracellular domain
G? hydrolyzes GTP to GDP and Pi
Explanation:
The GPCRs known in full as G protein-coupled receptors are viewed by many as the largest group of membrane proteins that are found in human genome. They share a common architecture. The seven-transmembrane (7TM) receptors are mostly used interchangeably with the GPCRs even though there are known receptors that have seven membrane domains and do not just signal through the G proteins.
how do mutations affect our communications?
Explanation:
When a mutation alters a protein that plays a critical role in the body, it can disrupt normal development or cause a medical condition. A condition caused by mutations in one or more genes is called a genetic disorder. In some cases, gene mutations are so severe that they prevent an embryo from surviving until birth.Over time, a mutation might take place in one of the descendant cells, causing increased activity of a positive cell cycle regulator. The mutation might not cause cancer by itself either, but the offspring of this cell would divide even faster, creating a larger pool of cells in which a third mutation could take place.
help plz i will do anything
Answer:
B
Explanation:
Inertia is the tendency of an object to resist changes in its state of motion and it varies with mass. Mass is that quantity that is solely dependent upon the inertia of an object. The more inertia that an object has, the more mass that it has.
How big of an advantage does a variant of a gene have to give to start becoming more common in a population?
1. Greater than 0%
2. Greater than 5%
3. Double
Answer:
The correct answer is 1. Greater than 0%. An allele to become common must have a frequency of at least 0.005%
Explanation:
A polymorphic gene has more than two alleles. The more alleles there are in a population, the more polymorphic the gene is.
In a polymorphic gene, the allelic frequency of the most common allele must be minor of 99%, while the less common allele must have an allelic frequency superior to 0.005%. If any allele does not reach this frequency in the population, it is not considered to be common. In fact, it is considered to be a rare allele.