28. Many biochemical reactions in living systems would occur at a rate too slow to sustain life without
the action of enzymes. What function do the enzymes perform?
A.
Inhibitor
C.
Catalyst
B.
Product
D.
Reactant
What is the process of obtaining food for energy?
Answer:
photosynthesis
Explanation:
What organisms use the carbon dioxide produced by animals
Answer:
It is produced by almost all living organisms (both plant and animal). It is given off, (exhaled) into the air every time we breathe. Even organisms without lungs or gills release carbon dioxide into the environment. This includes insects, plants, bacteria, etc.
What are some explained examples of pathways on how cells obtain energy.
Answer:
Catabolic pathways release the energy stored in complex molecules through the breakdown of these molecules into simpler compounds. Anabolic pathways, sometimes called biosynthetic pathways, require energy to combine simpler molecules into more complicated ones.
Exergonic reaction proceeds with a net release of free energy and is spontaneous. Endergonic reactions are nonspontaneous; they must absorb free energy from the surroundings.
Enzymes are biological catalysts agents that speed the rate of a reaction but are unchanged by the reaction
Investment of activation energy is known as a free energy of activation where the energy that must be absorbed by reactants to reach the unstable transition state, in which bonds are likely to break, and form which the reaction can proceed.
Kinetic energy is the relative motion of object whereas potential energy is the energy an object not in motion still possess
Explanation:
hope it helps
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A hormone signals through a G protein-coupled receptor as shown in the diagram. After the production of IP3, which of these events will MOST quickly stop the transduction of the signal?
A. the hydrolysis of IP3
B. the hydrolysis of GTP
C. the hydrolysis of PIP2
D. the hydrolysis of the hormone
Answer: The answer is A
Explanation: Took the test lol
The quickest halt to the signal transduction process after IP3 production occurs through the hydrolysis of IP3 itself, as option A.
The hydrolysis of IP3 results in the quickest termination of the signal transduction pathway among the available alternatives. A series of actions are triggered by IP3, which causes the release of calcium ions from intracellular reserves. IP3 is hydrolyzed by phosphatases, which halts the calcium release and prevents protracted signaling.
Even while the hydrolysis of GTP and PIP2 is a necessary step in the cessation of G protein-coupled receptor signaling, it happens later and does not have the same rapid effects as IP3 hydrolysis. The hormone's own breakdown is not a known mechanism for halting signal transmission.
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6. Alteration so that some of the proteins original properties are diminished or eliminated is:
a. Activation energy
b. Denatured
C. Catabolism
d. Anabolism
B, denaturing. Denaturing is the process in which proteins lose their native fold. The native fold is what gives each amino-acid sequence chain their function.
Why is the surface temperature of the ocean usually greater than the temperature on the ocean floor?
Answer:
Cold, salty water is dense and sinks to the bottom of the ocean while warm water is less dense and remains on the surface.
Cold water is a higher density in warm water.
The actual amount of heat generated per square meter of earth is quite small, especially compared to the amount of heat necessary to warm the ocean.
How does the friction affect the total time a pendulum is in motion? And what could cause this friction in the real world?
Answer:
Without friction, the equation of motion for a pendulum of length L is,
md2θdt2+mgsin(θ)L=0.
Or for small oscillations, (i.e., sin(θ)≈θ),
md2θdt2+mgθL=0.
Assuming an initial angle θ0 and a pendulum that starts at rest, the solution to this differential equation is,
θ(t)=θ0cos(gL−−√t).
Frictional force adds an additional damping term into the equation of motion,
md2θdt2+λdθdt+mgθL=0,
where λ is a coefficient of kinetic friction.
Assuming an initial angle θ0 and a pendulum that starts at rest, the solution to the damped differential equation is,
θ(t)=θ0e−12λmtcos((gL−λ24m2−−−−−−−−√)t).
(Note: If you would like to consider closed form solutions for large angles, I would recommend consulting the mathematics section. The solutions to that problem are called elliptic integrals of the first kind.)
Friction decreases the total time that a pendulum is in motion.
If we consider a pendulum in motion, in accordance with Newton's law, the pendulum will continue moving unless it is acted upon by an external force.
In the case of the pendulum, the external force that acts on it is the air resistance or friction. As a result of this friction, the pendulum will eventually come to a stop.
In the real world, the surface of objects cause friction which causes moving objects to stop.
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Which of the following best describes sickle-cell anemia?
O Caused by environmental factors that an individual was exposed to during pregnancy.
O A hereditary genetic mutation that causes a resistance to malaria.
O An inherited disorder that increases the risk of contracting malaria from mosquitos.
O A genetic mutation that is inherited from a dominant allele of one parent.
Answer: The answer should be B "O A hereditary genetic mutation that causes a resistance to malaria."
Explanation:
I do FLVS also you can find this out in your lesson 3.04 on page 5.
It says, "Sickle-cell disease is a genetic disorder that gives red blood cells a crescent shape instead of the typical disk shape. Sickle cells are stiff and sticky. They tend to block blood flow in the blood vessels of the limbs and organs. Blocked blood flow can cause pain, serious infections, and organ damage. This genetic disease is recessive, meaning the allele must be inherited from both parents to be expressed in a person’s phenotype. It is caused by a mutation in the gene that produces hemoglobin, the blood’s principle oxygen-carrying protein. Sickle-cell disease occurs more commonly in people and descendants from tropical and subtropical regions where malaria is common. Scientists have discovered that individuals with just one allele for sickle-cell disease are not only healthy, but they actually have a high resistance for the parasite that causes malaria. This resistance gives the carriers of one sickle-cell allele a great advantage over malaria, which claims more than a million lives each year, and explains why the allele for this dangerous genetic disease survives to be passed down to future generations."
Have a great day hope this helped!!!
:3
The sickle cell gene is inherited and results in sickle cell disease. You cannot catch HPV from an infected person because it is not brought on by whatever the parents did either before or during the pregnancy. Thus, option B is correct.
What are the characteristics of sickle-cell anemia?Red blood cells are typically disc-shaped and sufficiently flexible to pass readily through blood arteries.
Red blood cells with sickle cell disease have a crescent or “sickle” shape. Because sickle cells impede blood flow to particular organs, sickle cell disease complications can develop.
The severe side effects include stroke, acute chest syndrome, organ damage, various disabilities, and even early death. Acute chest syndrome lowers the blood's oxygen content.
Therefore, A hereditary genetic mutation that causes a resistance to malaria.
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2. Explain why glucose continues to enter a cell, even when the concentration inside the cell might be higher than outside.
Answer:
Both diffusion and facilitated diffusion are driven by the potential energy differences of a concentration gradient. Glucose enters most cells by facilitated diffusion. ... Na+ is maintained at low concentrations inside the cell and K+ is at higher concentrations. The reverse is the case on the outside of the cell
Glucose continues to enter a cell, even when the concentration inside the
cell might be higher than outside as a result of the process known as active
transport.
Active transport involves the movement of molecules through a
cell membrane against the concentration gradient. Examples include:
Antiport Pumps.Symport Pumps.This type of transport requires the use of energy such as ATP to move the
glucose molecules into the cell.
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how many moles of water are produced?
Answer:
10.86 moles of water are produced
Hope it helps!
Why is the abundance of viruses in water
directly related to the abundance of microbial life
in the water?
Answer
viruses kills cells and microorganisms can thrive where other species have been wiped out.
Explanation:
Microorganisms can flourish in areas where other species have been off because viruses damage cells.
In how many viruses is a of salt water contained?Viruses are the most prevalent creatures in the water, despite their seeming insignificance. One milliliter of coastal water that has been gathered from the ocean's surface contains up to 10 million.
In oxygen and hydrogen—which make up the water molecule—abound in large quantities. A typical salt that includes both sodium and chlorine is called sodium chloride. Many of the dissolved substances found in the ocean come from the crust of the Earth.
Through the process of photosynthesis, which involves the use of sunlight, nutrients, carbon dioxide, and water, phyto plankton produce oxygen and food for other organisms. the planet's seas, which cover 71% of it.
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The Sun is the primary source of energy that drives all the biogeochemical cycles on Earth. Which statement best describes how the Sun’s energy powers the water cycle?
A.
Plants require energy from the Sun to perform photosynthesis.
B.
The Sun's heat reflects off ice sheets near the polar caps, reducing the overall temperature of Earth.
C.
Heat from the Sun drives evaporation, turning water on Earth's surface into water vapor.
D.
Energy from the Sun provides the warmth necessary for cold-blooded animals to survive.
Answer: A
Explanation:
Answer:
C) Heat from the Sun drives evaporation, turning water on Earth's surface into water vapor.
Explanation:
The question is discussing water cycle, so the answer must be something to do with water. Option A talks about to photosynthesis in plants, which is not directly related to the water cycle. Option B discusses earth temperature, which is again not related to the water cycle. Finally, option D talks about the living requirements for cold blooded, again not related to water cycle. That leaves option C.
A hair consists of two parts: a follicle and a shaft
Answer:
ur answer is in the screenshot below.
Explanation:
What organisms are considered primary producers? What important function do they perform in the biosphere
Answer:
organisms create the food from which all other subsequent levels of the food chain get their food, and because they generate the food by the direct conversions of solar energy they are considered the primary food producers for a biosystem. Therefore, plants are considered the primary producers. Approved by eNotes Editorial Team
Explanation:
Answer:
Primary producers make their own food. Examples are organisms like plants and algae. Primary producers serve as food sources for primary consumers, which are organisms that eat producers, such as cows.
The scientist who is famous for his work on natural selection is ___________.
Answer:
Charles Darwin
Explanation:
hope it helps :p
mark me as brainliest
I need help ASAP pleaseee :( also im in 5th grade btw
Answer:
Ok I will help you what is the problem
Explanation:
The physical act of moving air into and out of the lungs is called:
The physical act of moving air into and out of the lungs I called ventilation or breathing.
I hope this helps
Thyroid hormone receptor (TR) regulates growth, development, and differentiation of mammals. TR contains both a domain that binds to T3, the thyroid hormone, and a separate domain that binds to DNA. Which of the following BEST explains how TR signals?
A. T3 binds to TR at the cell membrane, which then releases second messengers to regulate gene expression.
B. T3 binds to DNA at the cell membrane, which then releases second messengers to regulate gene expression.
C. T3 diffuses through the cell membrane to bind to TR, which then binds to DNA to regulate gene expression.
D. T3 diffuses through the cell membrane to bind to DNA, which then binds to TR to regulate gene expression.
Answer:
C. T3 diffuses across the cell membrane, attaches to Tr, and then binds to DNA to control gene expression.
Explanation: Thyroid hormone, as a ligand, diffuses across the plasma membrane, then searches for the nucleus TR (Thyroid receptor and RxR aie heterochimeric bind to DNA).
When Thyroid Hormone binds to the A domain of T3, Corepressor Proteins are removed, which stimulates gene transcription.
Which of these plant cell structures is also found in a prokaryote?
A
B
C
D
At what age will most adults experience decreased ROM
Answer:
between the ages of 40 and 80 years old
Explanation:
Which of the followWhich of the following correctly match a convection current in an Earth system to the primary source of energy for that convection current?
A
the atmosphere: global wind patterns -> source: solar radiation
B
the hydrosphere: global ocean currents -> source: solar radiation
C
all of the above
D
the geosphere: plate tectonics -> source: radioactive decay of elements in Earth’s coreing is a beneficial effect of volcanic eruption?
is for enviromental systems
Explanation:
Looking at the Ecological concept of Modern Ecology
we have
Atmosphere, Lithosphere, Biosphere, Niche, Environment, Habitat, Population, Ecosystem and Biotic community
Hydrosphere and Geosphere are not part
so Atmosphere is the correct answer
4. At night a similar event takes place (as that described in #3 above). As the sun goes down,
the air contains a certain amount of water vapor. The air then begins to cool
and eventually the air reaches the dew point. What is the dew point and what would form
at this point?
100points?
Answer:
its t0 wlsllslseopwpwooop
How many days does each lunar phase last? Explain your claim with reasoning.
Answer:
29.5 Days.
Explanation:
The Moon takes 27.3 days to orbit Earth, but the lunar phase cycle (from new Moon to new Moon) is 29.5 days.
Giving brainliest too correct answer
Answer:
A.) Different ideas from different scientists.
Explanation:
Every year, 25 km 3 of sand is deposited on a beach by a nearby river, and 28 km 3 of sand is removed by wave action. Is the size of the beach increasing or decreasing? Explain your answer.
If 25 km3 of sand is deposited on a beach yearly and 28 km3 of sand is removed by wave action, the size of the beach would be decreasing, not increase.
First, there is a need to understand that the size of a beach is a function of the amount of sand deposited into it. The more the sand deposited, the more the beach would increase in size.
In this case, 25 km3 of sand is deposited annually but 28 km3 of sand is washed away by waves. The net amount of sand deposited can be calculated by subtracting the amount washed away by waves from the amount deposited. Thus
Net sand deposited = 25 - 28
= -3 km3
Hence, the net amount of sand deposited annually is negative, meaning that the beach would decrease in size.
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Many biologists debate how a virus should be classified. In 2008, scientists in France discovered that a virus was capable of infecting another virus. Which theory might be supported by this information?
Answer: any virus should be classified by or what it is
Explanation:
in humans, the inheritance of what is best explained as being codominant
Answer:
height
Explanation:
what is the historical evidence on file for fossils
Answer:
Fossils are crucial evidence for evolution because they demonstrate how life on Earth used to be different from how it is now. Paleontologists can use radiometric dating to estimate the age of fossils and categorize them to discover the evolutionary connections between creatures.
Cuando se indica el reposo
Answer:
what happened which is this language