Steroids differ from fats in two main ways: they have a fused ring structure and many of them have the -OH functional group, which puts them in the alcohol classification.
Explanation:Steroids differ from fats in two main ways:
Steroids have a fused ring structure, while fats do not. This ring structure is made up of four linked carbon rings, which is characteristic of all steroids.Many steroids have the -OH functional group, which puts them in the alcohol classification. Fats, on the other hand, do not have this functional group.
Which organelle supplies the cell with energy?
a. ribosome
b. cytoplasm
c. nucleus
d. mitochondrion?
Answer: Mitochondria.
Explanation:
Mitochondria is a double membrane bound organelle found in the cytoplasm of the cell. The main function of mitochondria is to produce energy currency ATP (adenosine triphosphate) which is used by every cell of the body to perform metabolic activities.
The energy production takes place by the process known as cellular respiration in the presence of oxygen by the breakdown of glucose.
The mitochondrion is the part of the cell that supplies energy. It is often referred to as the 'powerhouse of the cell' as it turns glucose into ATP, the cell's energy-carrying molecule via cellular respiration.
Explanation:The organelle that supplies the cell with energy is the mitochondrion. Among your options, ribosome is responsible for the synthesis of proteins, the cytoplasm hosts various cell processes and the nucleus contains the cell's genetic material. However, it's the mitochondrion, often described as the powerhouse of the cell, that provides the energy. It does this by breaking down glucose into ATP (adenosine triphosphate) through a process called cellular respiration. ATP is the molecule that carries energy within cells and is vital for cell functions.
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The name dinitrogen tetroxide tells you that this compound contains
What is the function of an antibody in an antigen-antibody response?
A.
to remove the DNA of the antigen
B.
to enclose the antigen in a protective shell
C.
to help immune cells identify and destroy a pathogen
D.
to ingest and digest the antigen
The Calvin cycle happens in the ___________ of the chloroplast.
what is the knee cap called
The knee cap is called Patella.
Explanation:The patella is a bone that is flat and circular-triangular in structure It is attached with the femur (thigh bone) and protects and covers the inner surface of the knee.A newly born human baby consist of a petella that is made up of soft cartilage, after attaning four year of age it changes to bone(patella) and develops into bone after 4 year of age.It protects anterior(inner) knee from direct impact.Result: knee cap is called Patella.
When NADH passes its electrons into the Electron Transport System, NADH is chemically:
reduced
enzymized
hydrolysed
oxidized
Answer:
Option D, oxidized
Explanation:
The NADH gets oxidised when it passes its electrons into the Electron Transport System
Oxidization is a process in which one element or compound loses its electron to other chemical element or compound thereby itself getting oxidised and reducing the other one (the one who gains the electron).
Here in the electron transport system, the NADH loses or donates its electron to the Electron Transport System thus chemically it gets oxidized.
Hence, option D is correct
How does natural selection support the theory of evolution?
a) Natural selection explains how the changes in life forms that evolve over millions of years take place over shorter periods of time.
b) Natural selection explains how certain life forms are able to survive and reproduce after changes in their environmental conditions.
c) Natural selection comes from the collection of fossil record data that shows how life forms.
the prokaryotic cell cycle is different from the eukaryotic cell cycle because in the prokaryotic cell cycle
a. there is no growth phase
b.cell division does not involve division of the cell nucleus
c. DNA does not replicate
d. the cytoplasm and DNA are divided between two new cells.
The prokaryotic cell cycle is different from the eukaryotic cell cycle because in the prokaryotic cell cycle cell division does not involve the division of the cell nucleus.
What do you mean by Cell cycle?The cell cycle may be defined as the process a cell goes through each time it divides. The cell cycle consists of a series of steps during which the chromosomes and other cell material double to make two copies.
Prokaryotic cell lacks a nucleus and well-defined cell organelles. Due to the deficient nucleus, a prokaryotic cell never involves the nucleus in its division.
Therefore, the prokaryotic cell cycle is different from the eukaryotic cell cycle because in the prokaryotic cell cycle cell division does not involve the division of the cell nucleus.
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Which of the following best describes the fate of energy in ecosystems?
a. It will ultimately be recycled back into the ecosystem.
b. It flows from secondary consumers to primary consumers.
c. It enters most ecosystems in the form of sunlight.
d. It flows through and is used by ecosystems.
Answer:
d.
It flows through and is used by ecosystems.
Explanation:
DNA is coiled into chromosomes in a cells
The right answer is in a cell's nucleus.
The nucleus contains the DNA (deoxyribonucleic acid) on which is encrypted the genetic information: the chromosomes.
When the cell is not in a fission period, the DNA is pelletized and the chromosomes can not be seen. On the other hand, as soon as it enters the period of fission, the DNA unfolds and the chromosomes are clearly visible in batonets, so that they can be doubled.
The two main processes by which plant cells absorb,release, and use energy are
Answer:
The answer are:
- Respiration.
- Photosynthesis.
Explanation:
Respiration allows plants to produce the necessary energy to perform their vital functions. Respiration of plants requires an exchange of gases between the plant and the environment, since when breathing, plants take oxygen from the environment and expel carbon dioxide (CO2) to the environment. Photosynthesis is a process that plants carry out to manufacture their own food from various elements that they find in their environment, such as sunlight, carbon dioxide and water, where inorganic materials become organic. This process serves for the development and growth of the plant.During the teen years, our self-esteem usually
stay the same
increase
decrease
increases, then decreases rapidly
If a person with o blood type produces offspring with a person with b blood type, then what percentage of their offspring will be type o in the best case scenario?
Answer:
In humans, blood group is determined by three alleles [tex]I^{A}[/tex], [tex]I^{B}[/tex], and [tex]i[/tex].
[tex]I^{A}[/tex] and [tex]I^{B}[/tex] are co-dominant whereas [tex]i[/tex] is recessive to other two.
Thus, if a person with blood group O produces offspring with blood group B then the other parent must contain [tex]I^{B}[/tex] allele.
The genotype of other person can be [tex]I^{A}I^{B}[/tex], [tex]I^{B}I^{B}[/tex], or [tex]I^{B}i[/tex].
There is only one condition in which the person can have offspring with blood group O that is, when the other parent is [tex]I^{B}i[/tex].
In this condition, the probability of an offspring to have blood group O is 50%.
In other conditions, the probability of an offspring to have blood O is 0%.
In the best case scenario where the type B parent is heterozygous (BO), there is a 50% probability that the offspring produced with a type O blood person (ii) will have type O blood. If the type B parent is homozygous (BB), all offspring would be type B with no possibility of having type O blood.
Explanation:Offspring Blood Type ProbabilityWhen a person with type O blood (genotype ii) produces offspring with a person with type B blood, the offspring's blood type depends on the genotype of the type B parent. Provided the type B parent is heterozygous (genotype BO), which is the best case scenario for offspring to have type O blood, the possible genotype combinations would be Bi and iO.
The offspring would have a 50% chance of inheriting the O allele from the type O parent (genotype ii) and the O allele from the type B parent (BO), resulting in a genotype of type O (ii) for the offspring. Consequently, the offspring would have a 50% probability of having type O blood.
If, however, the type B parent is homozygous (BB), then all offspring would inherit one B allele and would not have the chance of being type O. Thus, they would all be type B.
how does a cell react in salt water
Which of the following is NOT true about ATP?
glucose breaks down into ATP without any initial energy input. (It just spontaneously happens)
Energy is stored in the bonds of the phosphate group
cells make and use ATP
ferns, slime molds, dogs, and fish all use ATP for energy in the cells
Trichodesmium is a nitrogen-fixing cyanobacteria. Why might this cyanobacteria be important to other organisms in nitrogen-poor waters?
They convert atmospheric nitrogen (N2) to organic compounds including ammonia (NH3).
They convert inorganic nitrogen to ammonia (NH3) in the ocean.
They convert organic nitrogen compounds to into other nitrogen compounds. They convert nitrates from the water into nitrogen gas (N2) that is released into the atmosphere.
Answer: They convert atmospheric nitrogen (N₂) to organic compounds including ammonia (NH₃).
Trichodesmium is cyanobacteria which converts atmospheric nitrogen into ammonia which is then used by other organisms present in the nitrogen poor water. They are found in the nutrient poor tropical and sub tropical ocean waters .They account for approximately half of the nitrogen fixation in marine system all over the world.
Final answer:
Trichodesmium is important to other organisms in nitrogen-poor waters because it converts atmospheric nitrogen into ammonia, providing an essential nutrient that supports marine life and maintains the nitrogen cycle in these regions.
Explanation:
Trichodesmium is a nitrogen-fixing cyanobacteria that plays a critical role in marine ecosystems, particularly in nitrogen-poor waters. As a diazotroph, this colonial cyanobacteria can convert atmospheric nitrogen (N₂), which is abundant but unusable by most organisms, into ammonia (NH₃), a form of nitrogen that is readily available for use by plants and phytoplankton. This process is crucial for supporting life in regions of the ocean where inorganic sources of nitrogen are scarce, as it helps maintain the nitrogen cycle and supports the base of the food web.
In nitrogen-poor waters, organisms depend on nitrogen fixers like Trichodesmium to contribute to the primary productivity of the ecosystem. The fixed nitrogen provided by Trichodesmium is essential for the synthesis of amino acids, nucleic acids, and other vital organic compounds within marine organisms. Therefore, without such diazotrophic cyanobacteria, many marine ecosystems would struggle to thrive due to the lack of accessible nitrogen.
Hence, the correct answer is they convert atmospheric nitrogen (N2) to organic compounds including ammonia (NH3).
The hypothesis that continents have moved slowly to their current locations is called
which of the following is an organic molecule? A. LiF B. C3H8 C.SO2 D.H2O
Answer:
C3H8
Explanation:
write a paragraph explaining the relationship between detritivores and decomposers in the ecosystem.
Occasionally asexual reproduction can cause undesirable proliferation of an organism.
True
False
Answer: True
Asexual reproduction is a process in which single parent organism produces offsprings. This occur in simple organisms like bacteria, prokaryotes and fungi where a single cell breaks down into two or more numbers of daughter cells. The asexually reproduction can cause undersirable proliferation because the environment will not be able to sustain such a undesirable increase in number of offsprings and ultimately offsprings will die.
What is an important function of the mitochondria?
Explanation:
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Let's solve this!
Mitochondria with organelles present in eukaryotic cells. In them, cellular respiration occurs, a process by which carbon dioxide is converted into oxygen. In addition, the Krebs cycle that is part of cellular respiration occurs.
How to separate genomic DNA and plasmid?
...?
Muscles are attached to bones by _____.
marrow
tendons
ligaments
skin
Tendons! Hope this helps :)
If an area has all the wolves that it can support, the wolf population has reached its ______?
If an area has all the wolves that it can support, the wolf population has reached its carrying capacity.
Carrying capacity refers to the maximum number of individuals that a population has in a given area.Carrying capacity depends on different types of limiting factors such as food availability.Limiting factors can be biotic (organisms) and abiotic (non-living part) factors.In conclusion, if an area has all the wolves that it can support, the wolf population has reached its carrying capacity.
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Which of the following is not a contributing factor to the declining Atlantic cod population?
A.) Destruction of marine habitats
B.) Increasingly efficient fish-harvesting technologies
C.) International treaties reducing competition among fishing fleets
D.) Decreases in ocean temperatures
Explain the interaction between the central nervous system and the peripheral nervous system.
The crucial regulatory, controlling and communicating system of the body is called the nervous system. It has an important role in acquiring and giving responses to a stimulant.
How do Central nervous system and PNS interact?The central nervous system comprises of the brain and spinal cord while the PNS have nerves spread throughout the body parts.The PNS connects the central to the body tissues, organs and skin structures with the help of nerves. The central nervous system receives information from the PNS via the nerves and helps in transmitting the response to the action received.Therefore, PNS and central nervous system are interrelated to each other for functioning.
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Why is it important for the cells of multicellular organisms to undergo mitosis?
which of the following best illustrates the role that gravity played in the in the formation of the solar system? (A) gravity removed excess gas and dust from the cores of the planet (B) gravity pulled particles of dust and gas together to form planes (C) gravity caused the nebula to cool enough for planets to form (D) gravity allowed the nebula to expand and move outward
Answer:
(B): Gravity pulled particles of dust and gas together to form planets.
Explanation:
I took the test (030)
Answer:
Option B. Gravity pulled particles of dust and gases together to form planets.
Explanation:
The definition of gravity in relation to astronomy can be compiled as the force by which planets and other heavenly bodies attract objects towards its center.Our solar system was formed 4.5 billion years ago due to a stellar explosion called supernova which scattered gases and dust into space.Some of the bodies with a larger mass and potential gravitational pull must have attracted particles, dust, material, and gases to form planets with an atmosphere revolving around the central star i.e., Sun.For more information:
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Pure water is neutral. What is the appropriate justification for this? A. Water has equal H+ and OH- ions, making its pH 7, which is considered a neutral pH. B. Water has more H+ than OH- ions, making its pH 5, which is considered a neutral pH. C. Water has more OH- than H+ ions, making its pH 8, which is considered a neutral pH.
Pure water is neutral because it has equal concentrations of H+ and OH- ions, resulting in a pH level of 7, which is considered neutral on the pH scale.
Explanation:The justification for pure water being neutral is A. Water has equal concentrations of H+ and OH- ions, which results in a pH level of 7. The pH scale ranges from 0 to 14, with 7 being considered neutral. Lower than 7 is acidic and higher than 7 is basic or alkaline. Therefore, since water has a pH of 7, it's considered neutral.
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Biogeochemical cycles recycle water and natural elements throughout the biosphere to ensure that organisms do not run out of these substances. Thiobacillus denitrificans is a specialized species of bacteria that obtains its energy from carbon dioxide and inorganic compounds such as nitrogen in its environment. It is used in bioremediation of groundwater that contains excess nitrate. How does Thiobacillus denitrificans help bioremediate groundwater? nitrification denitrification nitrogen fixation decomposition
Final answer:
Thiobacillus denitrificans helps in the bioremediation of groundwater by performing denitrification, converting excess nitrates into nitrogen gas and reducing nitrate pollution.
Explanation:
Thiobacillus denitrificans plays a crucial role in the biogeochemical cycles by performing denitrification. This specialized species of bacteria helps in bioremediating groundwater by converting excess nitrates (NO₃⁻) into nitrogen gas (N₂), effectively reducing nitrate pollution. Denitrification is an essential process in the nitrogen cycle as it prevents the accumulation of nitrates which can lead to eutrophication of aquatic systems and groundwater contamination. Denitrification by Thiobacillus denitrificans demonstrates the beneficial application of bacteria in removing pollutants from the environment, supporting sustainable agriculture and ecosystems.