Answer:
Ozone layer depletion can cause various types of skin cancers, eye cataracts and immune deffy disorders in human beings as there is an increase in the UV-B rays that reach Earth's surface.
Answer from Gauthmath
What happens to the nitrogen when organisms die?
Final answer:
When organisms die, the nitrogen in their bodies is released through decomposition and can be recycled back into the environment through various processes.
Explanation:
When organisms die, the nitrogen in their bodies is released through the process of decomposition. Decomposers, such as bacteria and fungi, break down the organic compounds in dead organisms and release nitrogen in the form of ammonium ions into the soil. This ammonium can then be absorbed by plant roots or converted into nitrates by nitrifying bacteria in the soil. Ultimately, this nitrogen can be recycled back into the atmosphere through the process of denitrification, where bacteria convert nitrates back into nitrogen gas.
The food web above represents feeding relationships in a biological community near a deep-sea hydrothermal vent. Hydrothermal vents are geysers on the seafloor that gush super-heated, mineral-rich water. The seawater surrounding hydrothermal vents typically contains carbon dioxide (CO2), molecular hydrogen (H2), hydrogen sulfide (H2S), and methane (CH4). Sunlight, however, fails to reach the seafloor where deep-sea hydrothermal vents are located.
As part of an investigation, researchers collected living specimens from an area near a deep-sea hydrothermal vent. Mussels in the collection were found to be dependent on molecular hydrogen in seawater. Also, the researchers discovered multiple species of bacteria living in the gills of the mussels. Mussels use gills for filter-feeding and gas exchange with the surrounding seawater. On the basis of their experimental results, the researchers hypothesized that some bacteria living in the gills of the mussels are capable of chemosynthesis. Which of the following best explains how biological communities near deep-sea hydrothermal vents can exist in a habitat lacking sunlight?
Answer: the bacteria in the habitat are the primary producer that relies on chemosynthesis (ability of organisms to produce their own food by anabolism of chemicals). Due to the the presence of h2S (hydrogen sulphide), the organisms are most probably Sulphur bacteria, liberating hydrogen as by products. This ability means that the bacteria can flourish without sunlight. The mussel are the secondary filter that feeds on the flourishing bacteria population. This build up to form a community whose primary energy source is from the minerals liberated by the vent and hence doesn't require sunlight.
Answer:Some organisms rely on energy captured from inorganic compounds to drive basic biological processes.
Explanation:
Which of the following pairs is mismatched? Select one: a. endoderm - bone b. mesoderm - muscle c. ectoderm - skin d. neuroectoderm - nervous system e. neural crest cells - peripheral nervous system, skin pigment, tissues of the face
Answer: a. endoderm-bone
Explanation: In the context of embryonic development, bone tissue may arise from several precursor cell populations, such as the neural crest (some facial bones), lateral mesoderm (bones of the limbs, among others), and paraxial mesoderm (vertebrae and part of the skull). There is no evidence to suggest that any of the bony structures is derived from the endoderm germ layer.
Which organelle has the same function as the digestive system?
In the moss life cycle _____ cells within a sporangium undergo _____ to produce _____ spores. In the moss life cycle _____ cells within a sporangium undergo _____ to produce _____ spores. diploid ... mitosis ... diploid haploid ... mitosis ... haploid diploid ... meiosis ... haploid diploid ... mitosis ... haploid haploid ... meiosis ... haploid
In the moss life cycle, diploid cells within a sporangium undergo meiosis to produce haploid spores. Therefore, option c is correct
- Sporangium: The sporangium is a structure in mosses that contains diploid cells.
- Meiosis: Within the sporangium, diploid cells undergo meiosis, a type of cell division that reduces the chromosome number by half, resulting in the formation of haploid spores.
- Haploid Spores: These haploid spores are released from the sporangium and dispersed by wind or water, eventually germinating into haploid gametophytes, the next stage in the moss life cycle.
- Alternation of Generations: Mosses exhibit alternation of generations, where the haploid gametophyte generation alternates with the diploid sporophyte generation.
- Importance: This process ensures genetic diversity in moss populations by shuffling genetic material through meiosis, ultimately contributing to the survival and adaptation of mosses in diverse environments.
The complete Question is given below:
In the moss life cycle _____ cells within a sporangium undergo _____ to produce _____ spores. In the moss life cycle _____ cells within a sporangium undergo _____ to produce _____ spores.
a. diploid ... mitosis ... diploid
b. diploid ... mitosis ... haploid
c. diploid ... meiosis ... haploid
d. haploid ... meiosis ... haploid
e. haploid ... mitosis ... haploid
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The rate of osmosis across a cell membrane depends upon which of the following? I: Intracellular solute concentration II: Extracellular solute concentration III: Polarity of solutes IV: Molecular weight of solutes V: The presence of aquaporins
Answer:
aquaporins
Explanation:
aquaporins are channel proteins that allow water to flow through a membrane. The rate of osmosis depends on ratio of intracellular to extracellular concentration as well as the presence of aquaporins in the cell membrane
The rate of osmosis across a cell membrane depends on the following :
Intracellular solute concentration ( I )Extracellular solute concentration ( II )The presence of aquaporins ( V )Osmosis is the diffusion of water or liquid solvents through a semi-permeable membrane. the semi-permeable membrane prevents the passage of solutes during osmosis.
The rate of osmosis depends on the concentration of solute present in the solvent, inside and outside the cell. while the presence of aquaporins also improves the rate of osmosis as it aids the flow of the solvent through the semi-permeable membrane. while
The polarity of solutes does not affect the rate of osmosis as the rate of osmosis is dependent on concentration gradient and not polarity of solutes. the molecular weight of solutes does not have a significant effect on the rate of osmosis as well.
we can conclude that the intercellular, extracellular solute concentration and the presence of aquaporins have significant effect on the rate of osmosis across a cell membrane.
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The method of protecting an embryo from dehydration is due to the evolution of the _______
Based on the article, which statement accurately describes garlic mustard and trillium in the forest?
( 1 ) Trillium and garlic mustard are both native plats.
( 2 )Trillium is a native plant, and garlic mustard is an invasive plant.
( 3 )Trillium is an invasive plant, and garlic mustard is a native plant.
( 4 )Trillium and garlic mustard are both invasive plants.
The answer is number ( 2 ).
Answer:
For the answer is 2, or for people who don't know what number are it is b.
Explanation:
Trillium is a native plant, and garlic mustard is an invasive plant.
What is Trillium?Trillium is a genus of herbaceous perennial flowering plants native to temperate regions of North America and Asia. The plants are commonly known as trilliums or wake robins, and are well known for their distinctive three-petaled flowers, which are typically white, pink, or red in color.
Trilliums typically grow in wooded areas and are often found in large colonies. They are important components of temperate forest ecosystems, providing food and habitat for a variety of animals, including insects, birds, and small mammals. Trilliums are also highly valued by wildflower enthusiasts and are widely cultivated for their attractive flowers and foliage.
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What is a cell feature that distinguishes a colonial organism from a multicellular organism
Answer:
The difference between a multicellular organism and a colonial organism is that the individual organisms that form a colony or biofilm can, if separated, survive on their own, while cells from a multicellular organism (e.g., liver cells) cannot.
Explanation:
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Individual organisms from a colony or biofilm can survive on their own if they are separated, whereas cells from a multicellular organism cannot. This is the distinction between a multicellular organism and a colonial organism.
What is colonial organism?A colony in biology is made up of two or more conspecific individuals that coexist or are related to one another.
There are advantages for both parties to this connection, such as improved defense or the capacity to assault larger prey.
Multiple independent unicellular creatures make up a colony. All multicellular organisms are interdependent.
Cells from a multicellular organism cannot survive on their own if they are separated, in contrast to individual organisms from a colony or biofilm. This distinguishes a colony organism from a multicellular creature.
Thus, this is the difference between a colonial organism and a multicellular organism.
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Pepsinogen is produced by __________ and is activated by __________
Answer:
The correct answer is "Chief cells; hydrochloric acid secreted by parietal cells".
Explanation:
Pepsinogen is produced by chief cells in the gastric system. Pepsinogen is a precursor of pepsin, a powerful digestive enzyme that is activated when pepsinogen is exposed to gastric acid in the gastric lumen. This gastric acid is actually hydrochloric acid that is secreted by parietal cells, which are epithelial cells located in the gastric glands.
Which statement best describes
the streams on either side of the
Great Divide?
Answer:
A
Explanation:
Edge 2021
Explain how one receptor can induce different phenotypes in different cell types.
Answer:
It is possible since a receptor can activate different signaling pathways in different cell types
Explanation:
In a cell, a receptor bind to a specific ligand to activate a signaling pathway, while the same receptor may bind either with the same or another ligand in another cell type and thus activate another signaling pathway
One receptor can induce different phenotypes in different cell types as a
result of the ability to activate different signaling pathways in different cell
types in the body.
Receptors are compounds which have a particular substrate it binds to which are known as ligands when information is to be conducted from one point to another.
Cells have receptor which bind to a specific ligand in order to activate a
signaling pathway. The receptor however can bind to a ligand found in
another type of cell which explains how it's able to induce different
phenotypes in different cells.
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This is an internal support structure of an animal that gives the body structure and shape?
Answer:
skeleton
Explanation:
Answer:
Endoskeleton the answer above is corrects but not specific.
Male peacocks have tail feathers that make up 60% of their body length. During the mating season they fan their tails and shake these feathers in front of females. Females evaluate the tail-shaking behavior as part of selecting their mate. Which behavior is most likely to have been the original behavior that, through natural selection, resulted in this mate choice behavior of tail shaking?
1. head movement to make eye contact
2. involuntary muscle contraction such as shivering
3. sound production with the larynx flight
4. grooming feathers with the beak
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What are the types of symmetry?
A) proto- and deutero-
B) bilateral and radial
C) psuedo- and true
D) endo- and ecto-
Answer:
the answer is B
Answer:
bilateral and radial
What is the largest sediment that can be transported by a stream that has a velocity of 50 cm/sec?
A)Pebbles
B)Clay
C)Sand
D)Cobbles
The largest sediment that can be transported by a stream that has a velocity of 50cm/sec is; Sand.
Stream VelocityFirst, a general relationship between stream Velocity and diameter of the sediments is that as the stream Velocity increases, the diameter of the sediments increases and vice versa.
Additionally, the slower the stream Velocity, the lighter is the sediment it can transport.
Hence, the stream in discuss can transport sand sediments.
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A stream with a velocity of 50 cm/sec can transport larger sediments. Among the options provided, cobbles are the largest sediments that can be transported by a stream with this velocity.
Explanation:The size of the sediment that a stream can transport depends on its velocity. In the case of a stream with a velocity of 50 cm/sec, it is capable of moving larger sediments compared to a slower-moving stream. From the options provided, the largest sediment that can be transported by a stream of this velocity is D) Cobbles.
Just to give you additional information, pebbles indeed are smaller than cobbles, while clay and sand are still smaller yet, broken down by the stream's kinetic energy into finer particles. Thus, a stream with a velocity of 50 cm/sec has the power to move cobbles, as well as all smaller types of sediment.
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In order to perform this experiment what two experimental factors were kept constant
The imperial shrimp, Periclimenes imperator, is sometimes seen riding on the back of large sea cucumbers. The shrimp gets to move around to areas with food and expend very little energy, while the sea cucumber is unaffected. What type of relationship is this, and why?
A. Commensalism, because one species benefits
B. Mutualism, because both species benefit
C. Parasitism, because one species is harmed
D. Predation, because one species dies
There are 40 individuals in population 1, all with genotype A1A1, and there are 25 individuals in population 2, all with genotype A2A2. Assume that these populations are located far from each other and that their environmental conditions are very similar. Based on the information given here, the observed genetic variation is most likely an example of:
a. genetic drift.
b. gene flow.
c. disruptive selection.
d. discrete variation.
e. directional selection.
Answer:
Genetic drift
Explanation:
Genetic drift can also be referred to as allelic drift, it refers to the variation in allelic frequencies within a particular population over a period of time. It can also be referred to as the random fluctuations in the number of genotypes within a population. Genetic drift is not influenced by the environment and is usually more pronounced in a small population of organisms.
For example, a population of birds can consist of green feathers and blue feathers with the green feathers as the dominant allele, but as a result of random fluctuations, the offspring may all be with green feathers and hence could eliminate or reduce the allele responsible for blue feathers over time.
Chlorophyll molecules are in which part of the chloroplast?
Answer:
thylakoid membrane
Explanation:
The green pigment chlorophyll is located within the thylakoid membrane, and the space between the thylakoid and the chloroplast membranes is called the stroma
Chlorophyll molecules, which are key in photosynthesis, are located in the thylakoid membrane of the chloroplast. They absorb light to initiate the light-dependent reactions of photosynthesis.
Explanation:Chlorophyll molecules are located in the thylakoid membrane of the chloroplast. The thylakoid membrane is a system of interconnected discs where the light-dependent reactions of photosynthesis occur. These reactions convert light energy into chemical energy, specifically ATP and NADPH, which are then used in the Calvin cycle in the stroma of the chloroplast to create glucose. The chlorophyll in the thylakoid membrane absorbs light and uses that energy to initiate photosynthesis.
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Which option BEST explains how yeast interacts with sugar?
Answer:
Yeast can use oxygen to release the energy from sugar like you can in the process called respiration. So, the more sugar there is, the more active the yeast will be and the faster its growth up to a certain point - even yeast cannot grow in very strong sugar such as honey.
Explanation:
Which is the best example of physical weathering? *
A) The cracking of rock caused by the freezing and thawing of water
B) The transportation of sediment in a stream
C) The reaction of limestone with acid rainwater
D) The formation of a sandbar along the side of a stream
Answer:
Which is the best example of physical weathering?
The cracking of rock caused by the freezing and thawing of water
Explanation:
The cracking of rock caused by the freezing and thawing of water is the best example of physical weathering
Populations and Communities Unit Test 3 of 34Items Item 3 Two closely related species of birds live in the same tree. Species A feeds on ants and termites, while Species B feeds on caterpillars. The two species coexist successfully because they interbreed The two species coexist successfully because each occupies a different niche The two species do not coexist successfully because they compete for food The two species do not coexist successfully because they use different methods of reproduction
Answer: The two species coexist successfully because each occupies a different niche.
Explanation:
Two species of birds that are closely related to each other tend to live on the same tree because they occupy different niche. Two different species coexist as they have different food preferences.
Niche of the species can be defined as the the contribution of the species in the ecosystem and different organism contributes differently in the ecosystem.
There are many factors such as distribution, temporal and spatial distribution which can be different for both of the species.
So, the difference in the niche of the species enables them to coexists.
A brown fruit fly was crossed with a black fruit fly as shown below. What is the probability of a resulting offspring being black?
A.
100%
B.
75%
C.
25%
D.
50%
Answer:
B 75%
Explanation:
3 interesting facts about down syndrome
Answer:
There are three different types
In the U.S, black or African American infants with Down syndrome have a lower chance of surviving beyond their first year of life than other races
There are more than 400,000 people living with Down syndrome in the U.S
Explanation:
Final answer:
Down syndrome is a genetic disorder caused by an extra copy of chromosome 21. It is the most common chromosomal disorder and affects approximately 1 in every 700 babies. People with Down syndrome can lead fulfilling lives and make valuable contributions to society.
Explanation:
Down syndrome is a genetic disorder caused by the presence of an extra copy of chromosome 21. Some interesting facts about Down syndrome include:
An individual with Down syndrome has 47 total chromosomes, instead of the usual 46.Down syndrome is the most common chromosomal disorder, affecting approximately 1 in every 700 babies born.People with Down syndrome can lead fulfilling lives and make valuable contributions to society with the right support and opportunities.which of the following processes results in adaption
1)natural selection
2)genetic drift
3)nonrandom mating
4)migration
5)mutation
Answer:
1. Natural Selection
Explanation:
Which characteristics of adaptive immunity ensures that vaccination effectively prevents disease?
Explanation:
Immunological memory of adaptive immunity ensures that vaccination effectively prevents disease
When the adaptive immune system is exposed to a new threat, the specifics of the antigen are memorized so we are prevented from getting the disease againThe concept of immune memory is due to the body’s ability to make antibodies against different pathogensA vaccination against a virus can be made using either active, but weakened or attenuated virus, or using specific parts of the virus that are not activeBoth attenuated whole virus and virus particles cannot actually cause an active infection, they mimic the presence of an active virus in order to cause an immune response, even though there are no real threats presentBy getting a vaccination, one is exposing the body to the antigen required to produce antibodies specific to that virus, and acquire a memory of the virus, without experiencing illness
A regular progression of species replacement is called __________.
Answer:
this should help you figure this out!
Explanation:
a somewhat regular progression of species replacement is called succession consists of a community and all the physical aspects of its habitat such as the soil water and weather. Ecosystem.
Ecological succession is the term used to describe a regular progression of species replacement in an ecosystem, whereby increasingly complex species adapt and replace the existing species until a stable climax community is established.
Explanation:A regular progression of species replacement is called ecological succession. This is a process observed in ecology where ecosystems change and develop over time. At the start of this process, a relatively barren area may only support simple life forms such as algae or bacteria. As time progresses, increasingly complex species adapt to the new conditions and replace the existing species. This continues until a stable community is established, often referred to as a climax community. An example of this could be a new volcanic island that initially has no life, but over hundreds of years, becomes a complex forest ecosystem.
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Does species are largest unit of life?
Answer:
no. domain is the largest scale of measuring of life