Enzymes speed up the rate of reactions in living cells by
Answers
Answer:
reducing the activation engery
Related Questions
PLEASE HELP ME ASAP THANKS!!
compare the process of digesting food in an amoeba (unicellular) to those in a mouse (multicellular),
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The process of digesting food in an amoeba (unicellular) is based on the invagination of the plasma membrane in a process called endocytosis, while digestion in a mouse (multicellular) involves a series of specialized organs that form the digestive system.
What is the invagination of the plasma membrane or endocytosis?The invagination of the plasma membrane or endocytosis is the process by which the plasma membrane is pulled inward, creating a small invagination or sac for the transport of materials within the cell.
Therefore, with this data, we can see that endocytosis is a cell process while the digestive system involves many coordinated processes during digestion.
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Parasites such as bacteria, viruses, and yeasts infest only careless people.
True
False
Answers
Answer:
false
Explanation:
all the things listed can happen to anyone for multiple reasons not because of carelessness
what role does auxin play in phototropism? LMK ASAP
-It produces extra chlorophyll on the bright side of a plant.
-It absorbs additional light on the dark side of a plant
-It shrinks the cells on the bright side of a stem, which causes the stem to bend toward the light.
-It elongates the cells on the dark side of a stem, which causes the stem to bend toward the light
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according to this phylogenetic tree, which of these pairs of prokaryotic subgroups share the most recent common ancestor?
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According to this phylogenetic tree, cyanobacteria is the pairs of prokaryotic subgroups share the most recent common ancestor.
What are cyanobacteria?
Cyanobacteria (also known as blue-green algae) are a group of photosynthetic bacteria that are found in a wide range of habitats, including freshwater, marine, and terrestrial environments. They are some of the oldest known organisms on Earth, with fossil evidence dating back over 3 billion years.Cyanobacteria are unique among bacteria in that they have the ability to carry out oxygenic photosynthesis, a process that uses sunlight to generate energy and produces oxygen as a byproduct. This process is similar to the photosynthesis carried out by plants and is thought to have played a crucial role in the evolution of life on Earth by generating oxygen in the atmosphere.In terms of their evolutionary relationships with other prokaryotic groups, cyanobacteria are classified within the domain Bacteria, and are thought to be closely related to other photosynthetic bacteria such as the Chlorobi and Chloroflexi. However, the precise relationships between these groups are still the subject of ongoing research and debate among scientists, and the exact branching patterns of their evolutionary history may vary depending on the specific phylogenetic analysis being performed.
In summary, while cyanobacteria are believed to be one of the earliest and most important groups of prokaryotes in the evolutionary history of life on Earth, the specific details of their relationships with other prokaryotic groups may vary depending on the specific phylogenetic analysis being performed.
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Which of the following is FALSE? viral infections cannot be treated by antibiotics O antiviral drugs are made from interferons O vaccine for viruses are derived from the bacteria Ono all viral infecti
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The statement that is FALSE among the options presented is: "Vaccine for viruses are derived from the bacteria." Explanation:Vaccines are often made using small pieces of a virus.
In some cases, an inactivated or weakened form of the virus is used to create the vaccine. These small pieces or weakened form of the virus help the body's immune system to recognize and fight the virus in the future. Antibiotics are used to treat bacterial infections but they are not effective against viral infections.
Antiviral drugs are a class of medication used for treating viral infections. Some of the antiviral drugs are made from interferons, proteins that occur naturally in the body when exposed to viruses. These drugs work by boosting the immune system’s response to the virus and can help shorten the duration and severity of the infection.
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HELP pls will mark you the brainliest
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I think you got it correct
answer
prophase
interphase
steps
prophase
During prophase, the complex of DNA and proteins contained in the nucleus, known as chromatin, condenses. The chromatin coils and becomes increasingly compact, resulting in the formation of visible chromosomes.
www.nature.com
chromosomes become visible during interphase, which involves the first three stages of the cell cycle such as the G1, S, and G2 phases.
homework.study.com
You are a molecule of phosphorus. Choose a
starting point in the phosphorus cycle and
describe the process you would go through to
move through the entire cycle.
Answers
Answer:
Phosphorus cycles between living things and the soil.
Plants absorb phosphates from the soil and turn them into organic compounds through assimilation.
Animals eat plants and pass the phosphorus through the food chain from one animal to the other.
An animal dies and decomposes, returning the phosphorus to the soil.
Explanation:
Vhich molecules store information related to the function of a cell in the form of a coded message!
A
nucleic acids
B
lipids
C
enzymes
D
carbohydrates
Answers
Answer: The correct answer is A. nucleic acids.
Explanation: The genetic information is stored in the form of nucleic acids i.e. deoxyribonucleic acids (DNA) or ribonucleic acids (RNA).
Nucleic acids are large macromolecules in cells and viruses. Nucleic acids store and express genetic data. Therefore, option (A) is correct.
What are nucleic acids?The biopolymers and macromolecules known as nucleic acids are fundamental to every known type of living being. Nucleotides, which are the monomers that make up nucleotides, are composed of a 5-carbon sugar, a phosphate group, and a nitrogenous base. They are the building blocks that make up nucleotides. Deoxyribonucleic acid and ribonucleic acid are the two primary subgroups that can be found among nucleic acids.
Nucleic acids, including deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), are responsible for carrying genetic information. This information is read in cells and used to produce RNA and proteins, which are necessary for the functioning of living things.
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Which of the following best explains how the pattern of DNA arrangement in chromosomes could be used, in most cases, to determine if an organism was a prokaryote or a eukaryote?
a. Prokaryotic DNA - Single circular chromosome | Eukaryotic DNA - Multiple linear chromosomes
b. Prokaryotic DNA - Single linier chromosome | Eukaryotic DNA -Multiple linear chromosomes
c. Prokaryotic DNA - Multi chromosome | Eukaryotic DNA - Single chromosome
d. Prokaryotic DNA - Single circual chromosome | Eukaryotic DNA -Multiple linear chromosomes
Answers
The statement that best explains how the pattern of DNA arrangement in chromosomes could be used, in most cases, to determine if an organism was a prokaryote or a eukaryote is Prokaryotic DNA - Single circular chromosome | Eukaryotic DNA - Multiple linear chromosomes.
What is DNA? DNA is a molecule that contains the genetic material that controls the development and operation of all living organisms. DNA, in general, contains the instructions necessary for the growth, development, and maintenance of an organism. The genetic material of all living things, such as animals, plants, and bacteria, is made up of DNA.
Chromosomes are made up of DNA as well. In most cases, chromosomes can be used to determine if an organism is a prokaryote or a eukaryote. Prokaryotic DNA contains a single circular chromosome, whereas eukaryotic DNA contains multiple linear chromosomes.
Therefore, option A best explains how the pattern of DNA arrangement in chromosomes could be used, in most cases, to determine if an organism was a prokaryote or a eukaryote.
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What’s the student’s scientific question
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Answer:
Can you plz explain what you mean by that . Maybe I can help if you give explanation.
Which best describes a scientific theory?
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Answer: An explanation that is supported by many different experiments
Explanation:
4. In our solar system, the constant "k" in Kepler's Third Law is equal to 1 if AU and Earth years are used. Suppose astronomers found a new planet, very close
to the Sun. If the average distance from the planet to the Sun were 1/4 AU, how long would the planet's period be?
O 1/32 of an Earth year
O 1/8 of an Earth year
1/4 of an Earth year
O 1/2 of an Earth year
5. Scientists discover two planets orbiting a distant star. The average distance from the star to Planet
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If the average distance from the planets to the sun were 1/4 AU, how long would the planets period be 1/8 of an earth year. The average distance from the star to Planet A is 4 AU, and it takes 432 Earth days for Planet A to orbit the star.
According to Kepler's Third Law, as an orbiting planet's radius increases, so does the time of its orbit around the Sun. Thus, we learn that Mercury, the innermost planet, completes its orbit of the Sun in just 88 days. Despite the fact that Kepler had no knowledge of gravitation at the time he developed his three laws, Isaac Newton used them to derive his theory of universal gravitation, which explains the mysterious force behind Kepler's Third Law.Kepler and his theories played a critical role in improving our understanding of the dynamics of our solar system and served as a foundation for more recent models that more closely approximated the planetary orbits.To learn more about Kepler's Third Law.
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What is the population density of giraffes ?
Answers
The population density of giraffes in the wild is typically very low. Some key facts:
• Giraffes require a large range and inhabit savannas and grasslands in Africa. A single giraffe can require 10-20 square miles of range.
• Giraffe populations have declined by about 40% over the past 30 years, mainly due to habitat loss and poaching. They are classified as vulnerable by the IUCN.
• A typical giraffe herd consists of 10-20 individuals. Larger herds may form temporarily around scarce resources like water holes.
• Giraffe population densities tend to be less than 1 individual per square kilometer or about 0.4 individuals per square mile. Some estimates put the density at 0.2-0.5 giraffes per square mile.
• Due to their large size, giraffes need to travel long distances to find food, mates, and suitable habitats. This results in naturally low population densities and sparse distribution.
• As predators, giraffes mainly have lions, hyenas, and wild dogs to avoid. This also contributes to their tendency to inhabit large ranges and remain in small herd groups.
So in summary, giraffe population densities in the wild are typically well under 1 individual per square mile or 0.4 per square kilometer due to their large range requirements, sparse habitat distribution, and avoidance of predators. Let me know if you have any other questions!
in the riftia worm-endosymbiotic bacteria association, the bacteria are blank , using sulfide as an electron donor and oxygen as a terminal electron acceptor. multiple choice question. chemoautotrophic chemolithotrophic chemoheterotrophic
Answers
In the Riftia worm-endosymbiotic bacteria association, the bacteria are chemoautotrophic, using sulfide as an electron donor and oxygen as a terminal electron acceptor.
Chemoautotrophic refers to organisms that use chemical energy to convert carbon dioxide into organic compounds.
They do not need light to live, but rather derive their energy from the oxidation of inorganic chemicals or the conversion of inorganic carbon to organic carbon.
They are primary producers who produce food by photosynthesis, but they do it chemically rather than with the help of sunlight.
Therefore, in the Riftia worm-endosymbiotic bacteria association, the bacteria are chemoautotrophic, using sulfide as an electron donor and oxygen as a terminal electron acceptor.
Sulfide is used as the energy source and carbon dioxide as the carbon source. Bacteria's cells use oxygen to make ATP in the electron transport chain, which provides the energy they need to grow and reproduce.
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What is the role of trees in maintaining the quality of air Class 4?
Answers
Trees provide a heavy array of benefits. From helping us to clean our water, providing food and shelter to us, relieving our stress, and providing jobs, trees also help clean the air that we breathe.
Trees have a very crucial role in removing air pollutants from the atmosphere, while at the same time releasing oxygen and absorbing carbo di oxide.
“Trees remove carbon dioxide from the surrounding and reduce the effect of greenhouse gas effect, all span providing us with clean air to breathe."
Trees become increasingly very important in urban settings as they lend a hand with air pollution via their natural cycle of carbon absorption.
It is a pretty neat cycle and is crucially important to living systems.
Another big way that trees improve air quality is by reducing our surrounding temperatures. This helps in less use of energy-demanding air conditioning units in warmer climates.
Less demand for energy generation will result in fewer pollutants emitted, lower greenhouse gases, and ultimately a very lower level of carbon in our atmosphere.
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Photosynthesis is the process by which plants what
A. Turn CO2 into sugars
B. Release CO2 to the atmosphere
C. Turn sugars into CO2
D. All of the above
Answers
Answer:
Photosynthesis is the process by which plants release CO2 to the atmosphere.
hope it helps!
Answer:
b
Explanation:
release Cow to the atmosphere
You find a novel organism with unique structure and begin to study its nervous system.
You find that Vm = -40 mV. Important ions in this system appear to be magnesium (Mg^2+) and Rubidium (Rb^+).
Ion: Rb^+
Intracellular Concentration (mM): 200
Extracellular Concentration (mM): 5
Ion: Mg^2+
Intracellular Concentration (mM): 50
Extracellular Concentration (mM): 400
For this system, the concentration gradient for magnesium favors [×] and the electrical gradient favors [y].
A) efflux; efflux
B) influx; efflux
C) influx; no effect
D) influx; influx
E) efflux; influx
Answers
The concentration gradient for magnesium favors efflux and the electrical gradient favors efflux. (A).
How to determine concentration gradient?The intracellular concentration of magnesium is 50 mM, which is lower than the extracellular concentration of 400 mM. Therefore, the concentration gradient for magnesium favors the movement of magnesium ions out of the cell, i.e., efflux.
The extracellular concentration of Rb^+ is 200 mM, which is higher than the intracellular concentration of 5 mM. Therefore, the concentration gradient for Rb^+ favors the movement of Rb^+ ions into the cell, i.e., influx. However, we are not asked about Rb^+ in this question. Since it only asks about the magnesium ion, so efflux; efflux.
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These types of trees have their leaves modified into needles to help
reduce water loss?
Answers
Answer:
Coniferous trees
Explanation:
They are mainly found in cold regions
While trying to understand what evolutionary adaptations explain the human tendency to group each other by arbitrary categories (such as race), they supported which of their hypotheses about human groups?
Answers
Research into evolutionary adaptations and the human tendency to group each other by arbitrary categories (such as race) has led to the support of the hypothesis that humans evolved to categorize others based on visible physical characteristics as a means of identifying potential threats and allies in their environment
. This evolutionary adaptation allowed early humans to quickly assess potential dangers and form alliances for survival. However, in modern society, this tendency to group by race has become problematic and has resulted in systemic racism and discrimination.
To address your question about evolutionary adaptations and the human tendency to group each other by arbitrary categories, researchers have supported the hypothesis of the "in-group vs. out-group" bias.
This bias suggests that humans have evolved to form social groups and identify more closely with their in-group members, while perceiving out-group members as different or even threatening. This categorization may have provided evolutionary advantages for resource allocation, cooperation, and protection against potential threats from competing groups.
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_refers to a balanced ecosystem
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what are three main tenets of cell theory
A. New cells are produced by existing cells .
B. Cells in living things are all the same .
C. All living things are made of cells
D. Cells are the basic unit of structure and function in all living things.
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New cells are produced by existing cells , All living things are made of cells, Cells are the basic unit of structure and function in all living things are the 3 tenets of cell theory.
What is Cell Theory ?Cell theory states that the cell is the basic structural and functional unit of living organisms. In 1839, the German physiologist Theodor Schwann and the German botanist Matthias Schleiden proclaimed that the cell is the "elementary particle of life" in both plants and animals, acknowledging that there are unicellular and multicellular organisms. I was. This theory represents a major conceptual advance in biology and has brought renewed attention to living processes occurring within cells.
The cell theory has three principles. 1) All living things are made up of cells. 2) Existing cells are produced by other living cells. 2) Existing cells are produced by other living cells.
For example, bacteria, which are single-celled organisms, divide (after growing a little) in half to create new bacteria. Similarly, your body creates new cells by dividing existing cells. In both cases, cells develop only from previously existing cells.
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Energy flow within a system that contains life is necessary. Scientists have explored this idea in projects such as Biosphere 2 and conducted studies about the possibility of colonizing Mars. How might research on the flow of matter and energy through ecosystems be helpful to creating a colony on Mars?
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Answer:
Energy flow is integral to any biological environment that supports life. Since energy can neither be created nor destroyed, it has to change from one form to another in order to maintain a balance. Everything within an ecosystem is interconnected, from plants as producers to herbivores that feed on the plants and the predators that feed on the herbivores. All of this will have to be established de novo at Mars using artificial means because the Mars atmosphere cannot naturally do this.
Hope that answers the question, have a great day!
Describe the characteristics of fungi.
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Answer:
Fungi are eukaryotic, non-vascular, non-motile and heterotrophic organisms.
They may be unicellular or filamentous.
They reproduce by means of spores.
Fungi exhibit the phenomenon of alternation of generation.
Fungi lack chlorophyll and hence cannot perform photosynthesis
Explanation:
hope it will help you
What is one of the reactants for cellular respiration?
A. Glucose
B. Water
C. Carbon dioxide
D. Energy
Answers
Explanation:
The reactants for cellular respiration are Glucose and Oxygen, so the answer is A.
Answer:
oxygen and glucose.
Explanation:
oxygen and glucose are both reactants in the process of cellular respiration.
bacterial infections, but not intoxications, can cause diarrhea. bacterial infections, but not intoxications, can cause diarrhea. true false
Answers
True. Bacterial infections and intoxications are two different mechanisms by which bacteria can cause harm. Infections occur when bacteria multiply inside the body and directly damage tissues or release toxins, while intoxications happen when pre-formed toxins are ingested, typically through contaminated food or water.
Bacterial infections, such as those caused by Salmonella, Shigella, or E. coli, can lead to diarrhea. These infections involve the bacteria invading and multiplying within the gastrointestinal tract, which can result in inflammation and damage to the intestinal lining. The body responds by increasing the secretion of fluids in the gut and speeding up intestinal transit, ultimately leading to diarrhea.
In contrast, bacterial intoxications involve the ingestion of pre-formed toxins produced by bacteria, such as in the case of Clostridium botulinum (causing botulism) or Staphylococcus aureus (causing staphylococcal food poisoning). While these toxins can cause a range of symptoms such as nausea, vomiting, and even paralysis, they typically do not cause diarrhea, as they do not directly affect the gastrointestinal tract in the same way as bacterial infections do.
Therefore, it is true that bacterial infections, but not intoxications, can cause diarrhea.
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Which of the following is not a function of protein?
Answers
Answer:
RNAs
Explanation:
Answer:
Store and transmit genetic information is NOT a function of protein
Explanation:
for the patient’s new immune system to function effectively in bone marrow recipients, one of the reason that some hla allotypes must be shared because _____.
Answers
For the patient’s new immune system to function effectively in bone marrow recipients, one of the reasons that some HLA allotypes must be shared is because the body's immune system recognizes foreign cells as pathogens and begins to attack them. For this reason, bone marrow transplantation requires immunological compatibility between the donor and the recipient to avoid adverse immune reactions.
The matching is done based on the Human Leukocyte Antigen (HLA) system, a group of genes found on chromosome 6 that encode for proteins involved in the regulation of the immune system. HLAs are inherited from the parents, and therefore the probability of siblings having matching HLA types is higher than in unrelated individuals. Incompatible HLA antigens lead to graft-versus-host disease (GVHD) where the transplanted immune system begins to attack the recipient's body.
It can lead to a wide range of complications, including severe organ damage, and in severe cases, it can be fatal. Hence, HLA matching is essential for successful bone marrow transplantation.
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which of the following is a characteristic of a lipid? group of answer choices most lipids are waxy. most lipids are soluble in water. lipids are found only in animals. most lipids are high density.
Answers
The optimal response is B. The majority of lipids are waxy.
Wax is an illustration of a lipid that is water-insoluble. Long-chain nonpolar lipids are this kind of lipid. The following explanations explain why the other options are incorrect:
A: Lipids generally have low density. Generally speaking, lipids float on water.
C : Lipids cannot dissolve in water.
D: Lipids are also present in plants.
Lipids are biomolecules that are not related to one another structurally but rather by their physical characteristics. Lipids serve as a source of metabolic energy, a component of membranes, and a regulator of gene expression. Fatty acids are one type of lipid that serves as metabolic fuel.
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In the past, Native American Indians buried dead fish along with corn seeds. This technique was used because the decomposing dead fish would:
Answers
Answer:
Give nutrients for the corn seed to grow
Explanation:
The native Americans were using fish as fertilizers. Since fish fertilizer enhances soil quality, it also enhances soil productivity by supplying the essential nutrients for crop growth Fish fertilizers have blister nitrogen as well as the essential nutrients phosphorus as well as potassium.
This technique became popular when Native Americans taught the colonists such techniques of surviving in wilderness.
Which of the following conditions would restrict the ability of a plant to perform photosynthesis?
Answers
The conditions would restrict the ability of a plant to perform photosynthesis is the major limiting factors for photosynthesis are light intensity, temperature, and carbon dioxide levels.
What is the process of photosynthesis?The term photosynthesis has been defined as the process in which green plants prepare their own food in the presence of sunlight and during this process heat energy converted into chemical energy and this happens due to chlorophyll present in the green plants.
The limiting factors or the substances that are required for the process of photosynthesis are chloroplast, water (providing hydrogen and oxygen),the conditions would restrict the ability of a plant to perform photosynthesis is the major limiting factors for photosynthesis are light intensity, temperature, and carbon dioxide levels. Carbon Dioxide (Providing Oxygen and Carbon) and finally the most important is sunlight which will produce, oxygen and glucose, two essential elements in animal life.
Therefore, The conditions would restrict the ability of a plant to perform photosynthesis is the major limiting factors for photosynthesis are light intensity, temperature, and carbon dioxide levels.
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