Which of these changes to the cell would cause the greatest reduction in the activity of the catalase?
CHOICES:
#1 a return of pH to the normal range
#2 A decrease in the concentration of hydrogen and oxygen
#3 an increase in the concentration of hydrogen peroxide
#4 an increase or decrease in PH beyond normal range
Answers
Answer:
#3 an increase in the concentration of hydrogen peroxide.
Explanation:
The changes to the cell that causes the greatest reduction in the activity of the catalase would be - #3 an increase in the concentration of hydrogen peroxide.
Catalase enzyme is present in both plant and animal cells. The catalase is mainly found in aerobic organisms. The substrate for the enzyme is hydrogen peroxide which is broken down into oxygen and water.
The hydrogen peroxide is harmful to the cell and very reactive. Its buildup can kill the cellto breakdown the hydrogen peroxide, the catalase enzyme catalyzes it and convert it into water and oxygenincrease of the hydrogen peroxide leads to a reduction in the activity of the catalase.A single molecule of the catalase can break down 40 million molecules of hydrogen peroxide per minute.Thus, the correct answer is - #3 an increase in the concentration of hydrogen peroxide.
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Related Questions
1. The spinal cord is organized in 35 segments.
o True
O False
Answers
7. Cockroaches are exposed to a pesticide. After 3 hours, 95% of the insects are dead
Answers
11- El Pirata Barba Plata ha llegado a la isla del Coral para buscar un
tesoro. En el mapa pone que, desde la orilla, debe recorrer 3,7 hm a la
pata coja hacia el centro de la isla, y después otros 8,5 dam dando
volteretas en la misma dirección. ¿Cuántos metros recorrerá en total
desde la orilla hasta el tesoro? * cuál es la repuesta
Answers
Answer:
El pirata recorrerá 455 metros
Explanation:
3,7 hectómetros (hm) = 370 metros (m)
8,5 decámetros (dam) = 85 metros (m)
>> Distancia en metros = 370 m + 85 m = 455 metros
El hectómetro (hm) es una unidad de longitud que equivale a 100 metros, donde el prefijo hecto indica la equivalencia a 100 metros. Por su parte, el decámetro (dam) equivale a 10 metros, donde el prefijo deca indica la equivalencia a 10 metros.
How are mean and median alike?how are they different?
Answers
Answer:
Mean is the average you'll get when you add all your numbers then divide by the number of numbers you have. On the opposite side, median is the middle number within your list of numbers. If there isn't a middle number, take the two middle numbers and add them. Now, for how they are alike, I'm not so sure :'), but my closest guess would be they are fairly close together.
Sorry it's so long, hope I helped you :')
Explanation:
Which atom has two unpaired electrons in the outer valence
shell?
O helium
hydrogen
Oxygen
Olithium
Answers
Answer:
Oxygen
Explanation:
The electrons present in an atom are arranged in shells or orbitals. The electrons are filled into these shells based on their energy levels with those shells closest to the nucleus filled first as they have the lowest energies.
The arrangement of electrons around the nucleus of an atom is known as electronic configuration. The outermost electron shell of an atom is known as a valence shell shell and the electrons found in this shell are known as valence electrons. The electrons usually exist in pairs. The first shell can only contain two electrons; the second shell can contain 8. the electrons are singly filled first before pairing occurs.
The electronic configuration of the atoms of the elements in the option are as follows:
Helium : 1s² ; valence electrons are 2 which are both paired
Hydrogen: 1s¹ ; valence electron is 1
Oxygen : 1s²2s²2p⁴ ; valence electrons are 6 wit two unpaired electrons
Lithium : 1s²2s¹ ; valence electron is 1
Helium has two valence electrons but they are paired as its 1s shell can only contain a maximum of two electrons.
Oxygen has 6 valence electrons. Two of these electrons are paired while the other two are unpaired.
benifits of seroranin
Answers
Answer:
Serotonin is an important chemical and neurotransmitter in the human body. it is believed to help regulate mood and social behavior, appetite and digestion, sleep, and memory
Pythagoras's Model has the sun in center of the universe.
True
False
Answers
Answer:
i think its false, i checked wikipedia and it says that he thought the sun revolved around a "central fire"
Explanation:
3. Phosphorus represents only 1% of human body weight. However, it is a building
block of very important macromolecules. Describe some of the cellular functions
that would not be possible without phosphorus.
Answers
Answer:
It would be impossible to store and transfer genetic information
It would be impossible to carry out majority of cellular activities due to lack of usable energy.
Explanation:
Phosphorus, as stated in the question, represents a very low amount in our body system, however, its role in living systems cannot be underestimated. Phosphorus is a vital component of major biomolecules in our system.
- It is the building block of the NUCLEOTIDES that make up nucleic acids. Nucleic acids (DNA and RNA) store genetic information and help transfer it to offsprings. However, without one of the elemental components (phosphorus) that make up its structure, it will not be produced. Hence, the storage and transfer of genetic information will be impossible.
- Phosphorus also makes up the structure of the ADENOSINE TRIPHOSPHATE (ATP) molecule. ATP provides the cell with all the energy used in carrying out cellular functions. However, the absence of phosphorus needed for the synthesis of ATP, ATP will not be produced and ultimately no energy.
Which statements describe the energy in a food web? Select three options,
When an organism eats another organism, it loses energy,
Producers have the greatest amount of available energy,
Energy can follow many different paths,
When an organism eats another organism, it gains energy,
Producers have the least amount of available energy,
Energy always follows a single path.
i
Answers
Answer:
B, C. D!!!!!!!!!!!!!!
Explanation:
lmk if i said the wrong one!
I will change my answer so no one else gets it wrong :)
Viruses can reproduce many other viruses at once. Bacteria only reproduce one at a time.
O True
O False
Answers
Answer:
True
Explanation:
True ,viruses can reproduce many other viruses at once
20 POINT QUESTION!!! Does CORONAVIUS have all seven characteristics of a living thing? reproduction, ability to react to stimuli, growth & development, can process and use energy, regulation, organization/order, evolutionary adaptions?
Answers
no, it doesn't. viruses cannot reproduce without a host.
The most unsaturated fats have
Answers
Answer:
the most double bonds.
Explanation:
Camille was excited when the new instrument showed up at the lab. She
opened it up and started using it right away. What was her error?
A.) He used an inappropriate instrument.
B.) He used an uncalibrated instrument.
C.) He misread a measurement.
D.) He used the incorrect units.
Answers
Answer:
I would say B- it was uncalibrated
Explanation:
he did not take the time to make sure it was calibrated before use
All of the following are included in the forebrain except the
A. cerebellum
B. cerebrum
C. thalamus
D. hypothalamus
Please select the best answer from the choices provided
Answers
Answer:
D.
hypothalamus
Explanation:
edge
All the structures above indicated are included in the forebrain EXCEPT the CEREBELLUM (Option A).
The forebrain (also known as the prosencephalon) is the largest region of the brain.
The forebrain is composed of the cerebrum (telencephalon), thalamus, hypothalamus, pineal gland and limbic system.
The cerebrum is recognized to be the biggest portion of the brain.
On the other hand, the cerebellum is a brain structure located between the brainstem and the cerebrum.
The functions of the cerebellum include motor abilities, sensory perception and body posture/balance.
In conclusion, all the structures above indicated are included in the forebrain EXCEPT the CEREBELLUM (Option A).
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What will happen to an ecosystem that is experiencing a prolonged drought?
Answers
If an ecosystem was experiencing a prolonged drought, there would be a big decrease in the population. All living creatures require water, even the ones well adapted to little water. There probably would be as many planets, for the ones surviving would be ones managing to get water, or ones that can survive off little water. Now on the other hand the animals then wouldn't be getting enough food or water, so then again ones who would manage to survive would be ones adapted to little water and food or are excellent hunters.
You can also expect some animals to leave the ecosystem look for a better source of water and food.
hope this helps to some degree
The diversity, as well as the number of individuals among different species, may decrease gradually due to the scarcity of water.
What is an Ecosystem?An ecosystem may be defined as the place or an area where organisms of different species live together and interact with one another for the purpose of food, shelter, and space.
Every living organism on the earth's surface requires water in order to fulfill its requirement for cellular and metabolic activities.
But if the ecosystem experiences a prolonged drought, the physiology of all living organisms is disturbed due to which they leave the ecosystem, hence the number of species gradually lowers.
Therefore, it is well described above.
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7. If a growing child has deficient production of pituitary secretions, this child would
a. Develop acromegaly
b. Become a dwarf
C. Mature sexually at an early age
d. Be in constant danger of becoming dehydrated
Answers
Answer:
b. Become a dwarf
Explanation:
A decreased secretion of growth hormone can result in pituitary dwarfism which then decreases the rate of cell division of cartilage cells in the epiphyseal plate
Which of the following is an example of positive feedback? 1.)contractions in birth. 2.) regulations of blood glucose levels. 3.) regulation of body temperature
Answers
which of the following is the best explanation of how one organelle and a cell directly supports the work of another organelle to maintain cellular homeostasis
Answers
Answer:
All organelles have specific things that they are responsible for, all organelles work together to support the cell to work which maintains homeostasis. Organelles know their jobs and do them right so that the cell can function properly.
explain when you would use a line graph
Answers
please help me with this :,,,,,,,,,,,,,)
Answers
Answer:
using the formula
v=l*w*h
a. 8cm³ b. 384cm³ c 27cm³ d.75cm³ e200cm³ f 48cm³
g 49cm³ h 96cm³ i 1000cm³
what plays a key role in stimulating appetite and enabling us to taste food
Answers
Answer:
taste bud is the one that stimulate appetite and enable us to taste
Explanation:
because without the taste bud, we won't know that a particular food contain ions, acids and base
A 35-year-old bank clerk presents to your office for evaluation of fatigue. She has a 15-pack-year history of smoking and had rheumatic heart fever in childhood. On auscultation of her heart, the S2 sound is widely split; that is, it persists like that throughout the respiratory cycle. What is the most likely cause of the wide and fixed S2 split?
Answers
Answer:
I
Explanation:
how is sexual reproduction in plants become evolved to become less dependent on water?
Answers
Answer:
The Gymnosperms and Angiosperms are groups of plants with seed, which means that they don't necessary acquire water for fertilization. ... The sperm (male gamete) of gymnosperms is enclosed in a pollen grain. Thi structure is protected from desiccation and can reach the female organs without dependence on water.
Explanation:
2. The loss of the structure labeled U in the
figure above results in the formation of
what? SC.8.P.8.7
A isotope
B ion
C element
D) atom
Answers
Answer:
element
Explanation:
Answer: element
Explanation:
If water has a density of 1g/cm3, what must be true about the density of ice
Answers
Answer:
Water is more dense than ice, so ice will have lower density that make it float
What is the most important life processes in cells?
Answers
Answer:
oxygen, and glucose
Explanation:
Two of the chemicals and chemical processes that are most important to human life are oxygen, required for cellular respiration, and glucose, a form of sugar that releases energy during cellular respiration.
hope this helps you:)
The production and transmission of hormones in the endocrine system is MOST similar to which scenario?
Answers
Answer:
You type a text message, which your friend shows to a third party, who reacts to it.
Explanation:
Copied from google.
When a message is shown to a friend who shows it to another person.
What is the endocrine system?
A group of organs called glands makes up your endocrine system. These glands, which may be found all over your body, produce and emit hormones.
Hormones are substances that communicate with your organs, skin, muscles, and other tissues through your blood to coordinate various bodily activities. These messages instruct your body on what to do and when.
The level of hormones in your blood is regularly monitored by your endocrine system. In order to transmit the message, hormones send their messages by locking them into the cells they intend to reach.
When your hormone levels increase, the pituitary gland signals other glands to stop manufacturing and releasing hormones. The pituitary gland has the ability to tell other glands to manufacture and release additional hormones when levels fall below a specific threshold. Homeostasis is a mechanism that functions similarly to your home's thermostat. Almost every process in your body is impacted by hormones.
Therefore, it is like the scenario where a message is shown to a friend who shows it to another person.
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Sand on a beach is being continually washed farther down the shore. People who live near the beach want to stop this erosion. Which of the following structures or methods designed to deter erosion would best solve the problem?
A. groin
B. seawall
C. breakwater
D. replenishment
Answers
Answer:
The Answer is Letter A.
Explanation:
let residents build groins
Evan finds a rock. He scrapes it with his fingernail and leaves a scratch. His rock must be:
O a metamorphic rock
harder than feldspar
softer than diamond
made of more than one mineral
HELLP
Answers
The correct answer is C. Softer than diamond
Explanation:
Evan observation is related to the rock's hardness, which is usually measured on a scale from 1 to 10, in which 10 represents the hardest rock (diamond). In the case of the rock Evan found, the fact the rock can be scratched just using a fingernail shows the hardness of this rock is 2.5 or below because only minerals with this hardness can be scratched using the fingernail, while a higher hardness requires more complex tools.
Moreover, in this level of hardness, there are minerals such as gypsum or talc and these are softer than others such as feldspar with a hardness of 6 or diamond with a hardness of 10. In this context, it is safe to conclude this rock is softer than diamond. Also, hardness is not enough to determine if a rock contains two or more minerals or if it is metamorphic.
How does an area's weather differ from the area's climate?
Answers
Weather refers to the short-term atmospheric conditions, such as temperature, precipitation, humidity, wind speed, and cloud cover, that occur in a specific area over a short period of time, typically days or weeks.
Climate, on the other hand, refers to the long-term average weather patterns observed in a particular region over a period of decades to centuries.
Weather is the day-to-day variation in atmospheric conditions, including temperature, humidity, precipitation, wind speed, and cloud cover. It describes the current state of the atmosphere at a specific location and can change rapidly. For example, one day may be hot and sunny, while the next day may be cloudy and rainy. Weather conditions are influenced by various factors, such as air pressure systems, temperature gradients, and local geography.
Climate, on the other hand, represents the average weather patterns and conditions observed in a region over a long period of time. It is determined by factors such as latitude, elevation, ocean currents, and prevailing winds. Climate provides a broader perspective and encompasses the typical range of weather conditions experienced in a particular area. It takes into account long-term trends, seasonal variations, and averages of weather parameters.
While weather can change from day to day or even hour to hour, climate reflects the long-term patterns and trends in weather. For example, a region with consistently high temperatures and low rainfall throughout the year would have a hot and arid climate, regardless of occasional variations in daily weather conditions.
In summary, weather describes short-term atmospheric conditions, while climate represents the long-term average weather patterns observed in a specific area.
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