The zebra mussel is originally native to the Black and Caspian Seas of Asia. Zebra mussels were first detected in the Hudson River of New York in 1991. Before the arrival of zebra mussels, the Hudson River supported populations of native unionid mussels.
Describe one way an invasive species, such as the zebra mussel, can decrease the carrying capacity for a native species in an ecosystem.
Answers
Answer:
Lack of predators
Explanation:
The carrying capacity is the amount of organisms that the habitat is able to support. Invasive species compete with native species for limited resources including food, niche, etc. This phenomenon may have important negative effects on the survival of native species, even it may lead to the extinction if the invasive species is successful
One way in which an invasive species such as the zebra mussel can decrease the carrying capacity for a native species in an ecosystem is that the species decreases the amount of food and space available for native species.
Carrying capacity generally refers to the maximum number of individuals of a species that a particular environment can support based on the resources it has.
Thus, when a new species enters an ecosystem and is able to outcompete the native species for food and space, the carrying capacity for the native species will automatically decrease because the food and space available for them have become more limited.
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Related Questions
Pigments define the plant's:
Smell
Taste
Shape
Color
Texture
Answers
Answer:
The answer is Colour.
Explanation:
Pigments are found in chlorophyll of a plant cell which is green in colour.
Choose the accurate statements about how communication by the nervous and endocrine systems differs. Check all that apply. Check All That Apply The nervous system releases neurotransmitters at synapses at specific target cells.The nervous system releases neurotransmitters at synapses at specific target cells. The nervous system adapts relatively slowly and may respond for days to weeks.The nervous system adapts relatively slowly and may respond for days to weeks. The endocrine system reacts more slowly to stimuli, often taking seconds to days.The endocrine system reacts more slowly to stimuli, often taking seconds to days. The endocrine system stops quickly when stimulus stops.
Answers
Answer:
The nervous system releases neurotransmitters at synapses at specific target cells & The endocrine system reacts more slowly to stimuli, often taking seconds to days.
Explanation:
The nervous system is very specific with where the neurotransmitters go so they will affect target cells. The endocrine system is slower than the nervous system because the hormones travel through the blood so it takes much longer to reach the designated area.
Neurotransmitters are released by the nervous system at synapses with certain target cells.
How nervous system works?The endocrine system responds to stimuli more slowly, frequently taking minutes to days.
The fact that the nervous system utilizes electrical impulses to convey signals through neurons while the endocrine system uses hormones to deliver instructions to the target cells through circulation is one of the most important distinctions between the two systems.
Neurons interact with one another throughout the nervous system through electrical and chemical signals.
Therefore nervous system utilizes electrical impulses to convey signals through neurotransmitters.
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Coral bleaching can be hazardous to some fish species because
Answers
Coral bleaching can be hazardous to fish species due to the disruption of the coral reef ecosystem.
Explanation:Coral bleaching can be hazardous to some fish species because it disrupts the delicate balance of the coral reef ecosystem. Coral reefs provide shelter, food, and breeding grounds for many fish species. When corals bleach, they lose their vibrant color and become weak, making them more susceptible to disease and death. This, in turn, affects the fish species that rely on the coral reef for their survival.
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Twenty-five people developed symptoms of nausea, vomiting, and diarrhea three to six hours after attending a church picnic where they ate a ham and green bean casserole with cream sauce. The most likely cause of this case of food intoxication is _________.
a. Cholera toxin.b. Erythrogenic toxin.c. Aflatoxin.d. Botulinum toxin.e. Staphylococcal enterotoxin.
Answers
Answer:
e. staphylococcal enterotoxin
Explanation:
Staphylococcal enterotoxin is a toxin that is produced by the bacteria Staphylococcus aureus. It is a toxin found inside the gastrointestinal tracts of the human body which is why it is called an enterotoxin and it results in food poisoning when consumed by humans.
Staphylococcal enterotoxin is proteinous in nature and it can be found on dairy products such as milk or cheeses that have been contaminated by Staphylococcus aureus.
After consumption of the contaminated milk or cheeses, the person begins to experience symptoms of nausea, diarrhea as well as vomiting.
Staphylococcal enterotoxin is a very heat stable toxin which means even though you heat up a food contaminated with this toxin, the bacteria may die by the toxins would still remain in the food.
The best way to avoid food poisoning by Staphylococcal enterotoxin is to avoid eating contaminated foods.
The likely cause of food intoxication with symptoms appearing within three to six hours after eating a ham and green bean casserole with cream sauce at a church picnic is Staphylococcal enterotoxin produced by Staphylococcus aureus.
Explanation:The most likely cause of the described case of food intoxication, where individuals developed symptoms such as nausea, vomiting, and diarrhea within three to six hours after eating at a church picnic, is Staphylococcal enterotoxin. This kind of food poisoning occurs when Staphylococcus aureus contaminates food and produces enterotoxins. These toxins can cause the mentioned symptoms quickly after ingestion and are commonly associated with improperly stored meat and dairy products or due to poor hygiene during food preparation.
Such incidents underline the importance of maintaining proper food safety measures like thorough handwashing, reheating cooked foods to the recommended temperature of at least 60 °C (140 °F), and ensuring raw meats are cooked adequately to prevent bacterial growth. Additionally, when faced with symptoms of gastrointestinal distress, oral rehydration therapy with electrolyte solutions is a key treatment modality, mainly to prevent dehydration and support recovery.
Brine shrimp live in salt water, but the level of salt in the water where they reside can differ dramatically from day to day or longer time scales. In very high salt concentrations, a brine shrimp _____ salt across its gills and maintains an internal salt concentration that is _____ relative to the water where it lives. In lower salt concentrations, a brine shrimp _____ salt water across its gills and maintains an internal salt concentration that is _____ relative to the water where it lives.
Answers
Answer:
The correct answer is "excretes; hypotonic; absorbs, hypertonic".
Explanation:
Cell's homeostasis is only conserved in an isotonic solution, since cells that are in an hypertonic solution (high salt concentration) tend to loss water, and in hypotonic solution (low salt concentration) tend to absorb water. Brine shrimp lives in waters that are both, hypertonic and hypotonic and has adapted to overcome this issue by excreting and absorbing salt across its gills. In very high salt concentrations, a brine shrimp "excretes" salt across its gills and maintains an internal salt concentration that is "hypotonic" relative to the water where it lives. In lower salt concentrations, a brine shrimp "absorbs" salt water across its gills and maintains an internal salt concentration that is "hypertonic" relative to the water where it lives.
Final answer:
Brine shrimp secrete salt in high salt concentrations to maintain a lower internal salt level, and absorb salt water in low salt concentrations to maintain a higher internal salt level.
Explanation:
Brine shrimp live in environments where the salt concentration can vary significantly. They have adapted osmoregulatory mechanisms to maintain internal salt balance through their gills in response to the varying salinity of their surroundings.
In very high salt concentrations, a brine shrimp secretes salt across its gills and maintains an internal salt concentration that is lower relative to the water where it lives. Conversely, in lower salt concentrations, a brine shrimp absorbs salt water across its gills and maintains an internal salt concentration that is higher relative to the water where it lives. This regulation allows them to stay isotonic with their environment, thus surviving whether the water is hypotonic or hypertonic to their cells.
Susan, a 67 year old female, is experiencing ataxia, or poor muscle coordination. when doctors perform a romberg test, the results are negative. this negative result indicates that susan's condition results from a peripheral nervous system disorder.
Answers
Correct Completed Questions; Susan, a 67 year old female is experiencing ataxia, or poor muscle coordination. Doctors perform a neurological exam and they find that Susan is not positive for the Romberg test. Describe what these findings suggest about the sources of Susan's ataxia.
Answer:s
In order to test for balance and positioning(proprioception) as a measure of neurological function, or to test level of intoxication alcohol during driving, Romberg test is usually conducted,which can be negative or positive.It is generally used to investigate the cause of loss of motor control in individuals.
Explanation:
A positive result showed that her ataxia was due to loss of positioning due to loss of sensory from sensory neurons.However if negative as in the case of Susan, then it is to due to abnormality/dysfunctions in the cerebellum, and not due to loss of sensory functions,
Which statement describes a mushroom niche. Check all that apply
Answers
Answer:
Explanation:
can you add the photo of the question or add the answer choices
What is the difference between innate and adaptive immunity
Answers
Answer:
One is inherited (innate) from parents and the other is acquired after birth (adaptive)
Explanation:
Immunity refers to the ability of an organism to withstand or defend itself against diseases and infections caused by foreign bodies e.g pathogenic microbes. There are two major types of immunity organisms employ viz: Innate immunity and Adaptive immunity.
Innate immunity, also called natural immunity is the type of immunity transferred from parents to their offsprings i.e. inherited. The innate immunity is the primary form of defense that works generally to prevent entry of these foreign bodies into the system. This immunity is not pathogen-specific. A good experience of innate immunity in almost all plants and animals is the skin.
Adaptive immunity, also called acquired immunity, is the type that is acquired by an organism after birth and triggered when the innate form of immunity fails. Adaptive immunity is pathogen-specific i.e. it is responsive to a particular foreign body. A good example are the B and T cells (lymphocytes).
Answer:
from khan academy :)
In a cool environment, an ectotherm is more likely to survive an extended period of food deprivation than would an equally sized endotherm because the ectotherm ________. a) maintains a higher basal metabolic rate b) expends more energy per kilogram of body mass than does the endotherm c) invests little energy in temperature regulation d) has greater insulation on its body surface
Answers
Answer:
c) Invests little energy in temperature regulation
Explanation:
Ectothermic animals are the organisms which are dependent on the external sources of heat in order to regulate their internal body temperature. In these organisms the mechanism for the regulation of heat through internal physiological process is absent. Due to such feature they don't need to spend energy to maintain the body heat in cool environment and thus they can operate at a very economical metabolic rate. And thus they became enable to survive for longer even in the condition of food deprivation.
Answer:
CExplanation:
1. Ectotherm: Ectotherm are cold-blooded animall whose regulation of body temperature depends on external sources, such as sunlight and many other environmental factors.
2. They do not maintain their body temperature by self, so their body temperature changes externally.
3. They are also known as cold blooded animals.
3.They invests little energy in temperature regulation.
4. Example of ectotherms: include the fishes, amphibians, reptiles, and invertebrates.
In 1931 ____________ built the first Transmisssion Electron Microscope, allowing structures of the cell to be seen for the first time.
A. Robert Hooke
B. Ernst Ruska
C. Anthony Van Leeuwenhoek
D. Louis Pasteur
Answers
Answer:
Ernst Ruska
Explanation:
According to the biological species concept, distinct species are defined by reproductive isolation--that is, by a lack of interbreeding and a failure to produce viable or fertile offspring if they do mate. In some cases, reproductive isolation may not be complete, and there may be rare instances of interbreeding. As long as hybridization is rare, biologists generally classify species as distinct under the biological species concept. Given what you've learned about the biological species concept, should G. fortis and G. scandens continue to be considered separate species?
Answers
Answer: if two morphological distinct organisms from two distinct geographical areas, can mate & reproduce successfully, then they must belong to the same species
Explanation:
What would be the most obvious outcome of repeated cell cycles consisting of s phase and m phase only?
Answers
Answer:
The cells created would continuously shrink overtime, getting smaller and smaller
Explanation:
If repeated cell cycles consisting of the S phase and M phase only it would result in a smaller cell type.
What is the cell cycle?The cell cycle is the cyclic event in which, a cell divide into two cells, this process is necessary for the growth and reproduction of living organisms.
In the cell cycle, there are several, events that occur that begin with the growth of the cell and division, with replication of their DNA content and other organelles.
The phases of the cell cycle are G1, S, G2, M, and cytokinesis, if only the S phase and M phase, after every division cell gets shortened, because the actual growing phase G2 is escaped.
Therefore, smaller cell size is the outcome of repeated cell cycles consisting of the S phase and M phase only, which escape the G2 phase.
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Lightweight fungal spores are surrounded by this
Answers
Answer:
Protective covering called Perdium
Explanation
Fungal spores are agents of asexual reproduction in Fungi.
The function is to protect the spores in fungi.It may be thick or thin depending upon the species. When the layers are two in number,
Recent research has found that on one island of the Galapagos two finch species interbred. This interbreeding may have resulted in a hybrid species that ultimately led to the extinction of one of the species Darwin discovered. They call this speciation in reverse, or despeciation. Based on what you know about speciation, why are these terms appropriate?
Answers
Answer:
Speciation is the method by which unique species evolve from a common ancestor. In this case, two of these species that split from a common ancestor interbred and created a hybrid. This hybrid was apparently stronger and possibly better adapted to the environment, which led to extinction of a species formed by the initial speciation event.
Answer:
Speciation is the method by which unique species evolve from a common ancestor. In this case, two of these species that split from a common ancestor interbred and created a hybrid. This hybrid was apparently stronger and possibly better adapted to the environment, which led to extinction of a species formed by the initial speciation event.
Explanation:
Plato
Which organ systems are used to help the body shiver
Answers
Answer:
nervous, muscular
Explanation:
Many different host factors can influence a person’s susceptibility or resistance to infectious disease. Some factors are associated with increased susceptibility, whereas other factors are associated with decreased susceptibility.
Organize the following factors, indicating those that increase and those that decrease host susceptibility to infectious disease.
1. proper nutrition
2. smoking & alcoholism
3. good hygiene
4. being very young or very old
Answers
A population of 8,250 mice occupies the sand dunes in a coastal area. A severe hurricane washes out several miles of sand dunes. As a result, only 50 mice remain. The population has experienced
A. horizontal gene transfer.
B. gene flow.
C. a founder effect.
D. a bottleneck.
Answers
The population has experienced bottleneck effect. So, the correct option is (D).
What is Bottleneck Effect?Population bottleneck is also known as genetic bottleneck. It is defined as a sharp decrease in population size which is caused by environmental events such as famine, earthquake, flood, fire, disease, and drought; or human activities such as specific, widespread violence or deliberate killing, and human population planning.
The bottleneck effect is a type of genetic drift in which allele frequencies in a population change based on chance events. The change in frequency is completely random.
For the above given information, population of mice continuously decrease which results in 50 mice. This shows the Bottleneck Effect.
Thus, the population has experienced bottleneck effect. So, the correct option is (D).
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what percentage of the trash in the Great Pacific Garbage Patch comes from sources on land
Answers
Answer:
58%
Explanation:
Answer:
The answer is 80% From land !! I just took this test and took notes over the unit! You're welcome
Explanation:
Explain the main differences between muscular strength and endurance
Answers
Answer:
Muscle strength is the ability to exert a maximal amount of force for a short period of time.
Muscle endurance is the ability to do something over and over for an extended period of time without getting tired.
Explanation:
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Cammie :)
A main difference between organisms with simple body plans and those with complex body plans is that A main difference between organisms with simple body plans and those with complex body plans is that animals with simple body plans have a digestive compartment with one opening, whereas organisms with complex body plans have digestive tubes with two openings. animals with simple body plans have digestive tubes with two openings, whereas organisms with complex body plans have a digestive compartment with one opening. animals with simple body plans can ingest food while earlier meals are still being digested, whereas animals with complex body plans cannot. animals with simple body plans eliminate undigested food via an anus, whereas animals with complex body plans eliminate undigested food via a mouth. animals with simple body plans have digestive tubes with specialized compartments, whereas animals with complex body plans do not.
Answers
Final answer:
The main difference between simple and complex organisms in regards to digestion is that simple organisms have a digestive compartment with one opening, while complex organisms have a complete digestive system with separate mouth and anus for higher digestive efficiency.
Explanation:
A main difference between organisms with simple body plans and those with complex body plans is that animals with simple body plans have a digestive compartment with one opening, which serves both as a mouth and an anus, known as a gastrovascular cavity. In contrast, organisms with complex body plans usually have a digestive tube with two openings: a mouth for ingestion and an anus for the elimination of waste. This evolution of a complete digestive system allowed for higher efficiency in digestion, enabling continuous eating, more complex digestion with specialized sections, and more effective waste removal. Animals such as Platyhelminthes, Ctenophora, and Cnidaria have simple body plans with a gastrovascular cavity, while more complex organisms, including vertebrates and certain invertebrates such as roundworms, possess a complete digestive system.
03.05 MC) What is the relationship between genes, DNA, and proteins? (2 points) Select one: a. Proteins are regions of genes that carry the code for making DNA. b. DNA contains amino acids that carry the code for a protein that makes genes. c. Proteins are made up of DNA that contains the code to make genes. d. Genes are regions of DNA that carry the code for making proteins.
Answers
Answer:
The answer is D!
Explanation:
"Genes are regions of DNA that carry the code for making proteins."
Genes are regions of DNA on chromosomes that carry the code for making proteins, hence option D is correct.
What is DNA?One of the guiding concepts of molecular biology is the information transfer from DNA to RNA to proteins. It is so crucial that it is occasionally referred to as the "core dogma." Information from genes is utilized to generate proteins through the processes of transcription and translation.
The nucleotide sequences of DNA correspond to certain genes. These genes produce particular proteins with a role in phenotypic development. Proteins are the byproducts of genes, while DNA makes up genes. Between a gene and a phenotype, proteins act as an intermediate.
Your human anatomy is constructed and preserved by DNA. Genes are parts of your DNA that give you the physical traits that make you special.
Therefore, DNA on chromosomes that carry the code for making proteins, hence option D is correct.
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Help please! Fill in the blanks using the word bank, I’ll mark the answer brainliest and 10+ points!!
Answers
Answer:
The answer to your question is below
Explanation:
Glucose it is a sugar and then a biomolecule. It is necessary in the
cellular respiration because it helps in the production of
ATP.
Small 90% of the absorption of the nutrients is in the Small
intestine.
H₂O water is a very useful molecule that is necessary in most of
the chemical reactions.
Small I was doubting between small and large intestine, I finally
decided by small intestine because it absorbs 90% of all
the water.
While hiking in the forest Karl walked past a y'all tree with cones hanging from branches it is the tallest tree in the forest to which phylum does this plant belong
Answers
Answer: Conifers
Explanation:I did the test
Answer:
D. Confiers
Explanation:
i did the test!
The adaptations of epipelagic organisms center around which two main need?
Answers
Answer:
1. The need to stay afloat
2. The need to eat and avoid being eaten
Explanation:
Which is not a characteristic of asexual reproduction? Plz help it’s due in 1 hour
Answers
Answer: Asexual reproduction is reproduction without sex. In this form of reproduction, a single organism or cell makes a copy of itself. The genes of the original and its copy will be the same, except for rare mutations. They are clones. ... The main process of asexual reproduction is mitosis.
Explanation: I got you bruv.
Why can’t a virus reproduce on its own?
will give Brainliest
Answers
Answer:
Viruses can only replicate themselves by infecting a host cell and therefore cannot reproduce on their own. ... They are similar to obligate intracellular parasites as they lack the means for self-reproduction outside a host cell, but unlike parasites, viruses are generally not considered to be true living organisms.
Explanation:
: )
Explanation:
Viruses rely on the cells of other organisms to survive and reproduce, because they can’t capture or store energy themselves. In other words they cannot function outside a host organism, which is why they are often regarded as non-living
Though the variety of leavening agents have different ways of achieving this, what is the basic way they all achieve their purpose?
0 points
a) They create bubbles
b) They cause the flour in the dough to enlarge in size
c) they kill microbes in the batter
d) They react with proteins in the flour to create Gluten
Answers
Answer:
Though the variety of leavening agents have different ways of achieving this, what is the basic way they all achieve their purpose?
They cause the flour in the dough to enlarge in size
Explanation:
In what sense is influenza a zoonotic disease? A. It has animal reservoirs, especially birds and swine. B. It is transmitted by "stealth" arthropods. C. It is transmitted frequently by contact with wool. D. The main reservoir is wild carnivores. E. None of the above.
Answers
Answer:
A. It has animal reservoirs especially birds and swine
Explanation:
A zoonotic disease is something that normally exists in animals as in animal resevoirs like birds and swine, but can be transmitted to humans. When this happens our body does not have the proper antibodies prepared to combat the infection as it is foreign to us.
Influenza is a zoonotic disease because it can be transmitted from animal reservoirs, like birds and swine, to humans. The Influenza A virus is especially known for being transmitted from these animals to humans, and such transmissions can lead to widespread human outbreaks.
Explanation:In what sense is influenza a zoonotic disease? The answer is A. It has animal reservoirs, especially birds and swine. Influenza is considered a zoonotic disease because it is caused by pathogens that can be passed from animals, particularly birds and swine, to humans. Influenza A virus can be transmitted from these animal reservoirs to humans through direct contact or exposure to contaminated environments. The flu virus is highly contagious among humans through respiratory secretions and can cause significant outbreaks and pandemics.
Furthermore, a pathogen may have more than one living reservoir. These animal carriers may also be asymptomatic, harboring the virus without showing any signs of the disease themselves. The zoonotic nature of influenza emphasizes the importance of monitoring animal populations for signs of the virus to prevent transmission to humans.
place these in order
Water evaporates from a lake. Arrange the next steps of the water cycle in the correct order.
Water vapor condenses to form clouds.
Water flows down mountains and hills.
Water falls as rain, snow, and sleet.
Water joins streams or forms groundwater
Answers
Answer:
The correct order would be:
Water evaporates from a lake.
↓
Water vapor condenses to form clouds.
↓
Water falls as rain, snow, and sleet.
↓
Water flows down mountains and hills.
↓
Water joins streams or forms groundwater.
Water cycle refers to the cyclic movement of water in an environment. The water passes through various stages, namely:
evaporation and transpiration
condensation
precipitation
run off
Explanation:
Answer:
water falls as rain, snow, and sleetwater flows down mountains and hillswater joins streams or forms ground waterwater vapor condenses to form cloudsExplanation: this is the water cycle
What is an accessory organ of digestion
Answers
Answer:
An organ that helps with digestion but is not part of the digestive tract. The accessory digestive organs are the tongue, salivary glands, pancreas, liver, and gallbladder.
Accessory organs of digestion, including the salivary glands, liver, pancreas, and gallbladder, provide critical enzymes and bile that aid in breaking down food into nutrients.
Explanation:An accessory organ of digestion is a vital component of the digestive system that assists in the breakdown of food. These organs are not part of the digestive tract itself through which food passes but contribute essential secretions that aid in digestion.
Accessory digestive organs include the salivary glands, which begin the chemical digestion in the mouth, and the gallbladder, liver, and pancreas, which release bile and enzymes into the small intestine. These secretions are critical for continuing the process of digestion, turning complex food substances into absorbable nutrients. The activity of these organs is regulated by hormones and their function is indispensable for a healthy digestion process.