The autotrophs are the primary producer in the food chain and they are the ones who initiate the food chain. They produce food by using sunlight or sometimes chemical energy or reactions. They primarily use carbon dioxide, sunlight and water to form sugars or carbohydrates which become their energy source. They use the process of photosynthesis or chemosynthesis to generate food. Examples of autotrophs are green plants, green algae, bacteria.
Heterotrophs cannot make their food via sunlight or other inorganic sources and hence are dependent on the autotrophs or other animals. The heterotrophs have been ranked as secondary and tertiary consumers and cannot be producers. They consume the organic products made by autotrophs to obtain energy for various metabolic and biological activities. The heterotrophs can be herbivore, carnivore, fungi, parasitic plants.
Some are photo-hetrotrophs, who use light as energy but cannot use carbon dioxide as the carbon source since they cannot fix the carbon like autotrophs.
Viperfish hunt by attracting prey to their glowing bellies. This adaptation is most useful for the
ecosystem.
Answer:
Viperfish hunt by attracting prey to their glowing bellies. This adaptation is most useful for the open-ocean ecosystem.
Explanation:
In the open ocean ecosystem, not much diversity of organisms is present. In order to survive in the open ocean, an organism must have certain adaptations which will allow it to get the basic resources needed for survival. If adaptations are not provided, organisms will nor be able to survive in the open ocean ecosystem.
The adaptation of glowing bellies in the viperfish allows it to attract its preys due to which it is able to get food and survive in the open ocean ecosystem.
In pea plants, the gene for the color of the seed has two alleles. In the Punnett square shown below, the dominant allele (Y) represents yellow and the recessive allele (y) represents green.
ANSWERS:
Based on the Punnett square, what percentage of offspring would have genotype YY?
0%
25%
50%
100%
many times students stuggle whit rthe difference between the terms allele and gene . how would you explain the difference of these two terms in a way that is memorable to you?
Answer:
Gene is the phone, allele is the color you chose
10 A sequence of three nucleotide bases that complements mRNA is known as a(n)-
A Codon
B Anticodon
C Triplet
D Enzyme
Answer:
The correct option is B) Anticodon
Explanation:
An anticodon can be described as a three nucleotide sequence which is complementary to the mRNA. Based on the anti codons, amino acids are formed which join by polypeptide bonds to form proteins. Hence, option B is correct.
Option A is not correct because a codon is a sequence of three nucleotides which is complementary to the DNA bases. The codon will make up the prescribed mRNA.
2
3
4
5
6
7
8
9
10
es
M any countries around the world today are trying to use renewable resources in such a way that the resource will be able to
meet the needs of their citizens long into the future. What name is given to this practice of using resources carefully so that
future generations may also be able to meet their needs?
sustainable use
resource selection
biotic preservation
D)
biogeochemical cycling
Eliminate
Submit
Human Population Growth
Answer:
The correct answer is : sustainable use
Explanation:
Sustainable use: The judicious and economical use of natural resources by the present generation such that the resources can be preserved for use by the successive generations is known as the Sustainable Use of Resources.Resource Selection : When a species selects a specific resource as the source of food or energy or shelter from among multiple available sources, the phenomenon is called Resource Selection.Biotic preservation : The protection of biotic organisms (plants, animals, micro-organisms) by in-situ ( in the habitat of the species) or ex-situ (outside the habitat of the species) conservation in national parks, sanctuaries and biosphere reserves to prevent them from becoming endangered or extinct due to natural disaster or human intervention.Biogeochemial cycling : The nutrient cycles operating on the earth, like nitrogen, carbon, oxygen, sulphur, phosphorus and water cycles, and their interaction with each other and the organisms living on earth constitute the Biogeochemical cycle.What are two ways in which cement plants and carbon to the atmosphere
Answer:
The production of cement releases greenhouse gas emissions both directly and indirectly: the heating of limestone releases CO2 directly, while the burning of fossil fuels to heat the kiln indirectly results in CO2 emissions.
Explanation:
List 4 things humans and primates have in common.
Answer:
A. Opposable thumbs
B. Depth perception
C. Maternal care
D. Large brains
Explanation:
Opposable thumbs --> Primates have opposable thumbs and refined hand and foot development . An opposable thumb is able to be moved opposite the fingers of the same hand in order to better grasp objects. This is an adaption for an arboreal, or tree-dwelling, lifestyle because it helps the primates have strong grips on the branches. Raccoons, dogs, and other non-primate mammals do not have opposable thumbs. This means they cannot move the thumb opposite the fingers of the same hand to grasp things tightly. This is why your dog would have trouble holding and manipulating a small object like a door key with his paws.
Depth perception --> Primates have an increased reliance on sight and decreased reliance on smell, compared to other mammals. The eyes are large and forward facing, which provides better depth perception. The nostrils are smaller in relation to the face than in many other mammals.
Maternal care --> Primates have a smaller litter size, longer gestation, and extended period of juvenile growth compared to other mammals. Most primates have one or two offspring at a time. They also exhibit increased periods of maternal care for their young compared to that of other animals.
Large brains --> Primates have relatively large brains. Primates have larger brains, relative to their body size, than most other mammals.
Which BEST describes where light pollution would be a big problem?
Answer: neon lights, cities
Explanation:
What are human bodies designed for ?
Answer:
Explanation:
. An unsound spine
Problem: Our spines are a mess. It’s a wonder we can even walk, says Bruce Latimer, director of the Center for Human Origins at Case Western Reserve University, in Cleveland. When our ancestors walked on all fours, their spines arched, like a bow, to withstand the weight of the organs suspended below. But then we stood up. That threw the system out of whack by 90 degrees, and the spine was forced to become a column. Next, to allow for bipedalism, it curved forward at the lower back. And to keep the head in balance—so that we didn’t all walk around as if doing the limbo—the upper spine curved in the opposite direction. This change put tremendous pressure on the lower vertebrae, sticking about 80 percent of adults, according to one estimate, with lower back pain.
Use symbols to distinguish between parasitism, mutualism and commensalism.
Parasitism, mutualism, and commensalism are types of symbiotic relationships and can be represented by '+/-', '+/+', and '+/0' respectively, indicating the effect of the relationship on each organism.
Explanation:The forms of symbiotic relationships, including parasitism, mutualism, and commensalism can be distinguished by the effect they have on the organisms involved. Parasitism can be symbolized with a '+' for the parasite and a '-' for the host, indicating that the relationship is beneficial for the parasite but harmful to the host. Mutualism can be represented by a pair of '+', or '+/+', indicating that both organisms benefit. Commensalism could be shown by '+/0', meaning one organism benefits and the other is neither helped nor harmed in the relationship.
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Parasitism is a symbiotic relationship where the parasite benefits at the expense of the host. Mutualism is a symbiotic relationship where both organisms benefit. Commensalism is a symbiotic relationship where one organism benefits, and the other is neither harmed nor benefited.
Explanation:In biology, parasitism, mutualism, and commensalism are three types of symbiotic relationships that describe interactions between two organisms where at least one organism benefits.
Parasitism (+/- interaction): This refers to a relationship in which one organism, the parasite, benefits while the other, the host, is harmed. An example of this is a tapeworm living in a human's intestines. Mutualism (+/+ interaction): This is a symbiotic relationship in which both species benefit. An example of this is humans and gut bacteria, where bacteria digest food and produce vitamins that humans can't, and in return, the bacteria get a safe and nutrient-rich environment. Commensalism (+/0 interaction): This means one organism benefits while the other is neither harmed nor benefited. An example is a bird building a nest in a tree; the bird gets a place to live, but the tree is unaffected. Learn more about Symbiotic Relationships
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name the four macromolecules.
Answer:
Proteins, Nucleic Acid, Carbohydrates & Lipids.
Explanation:
Proteins are made of amino acids and are a key component of the human body, as well as enzymes.
Nucleic Acid are made of nucleotides and can be found in DNA and RNA.
Carbohydrates are made of glucose, the sugar and starch in food.
Lipids made of glycerol, fatty acids for example, oil.
Here is picture of the 4 macromolecules and their structures.↓
This is an observable trait of an organism that can mask the recessive trait
Answer:
Dominant Trait
Explanation:
The Dominant trait is well, dominant, and therefore over powers the recessive trait most of the time.
Why are bacteria used in recombinant DNA technology?
A. They divide quickly.
B. They have no genes
C. They have a nucleus.
D. They cannot make protein.
Answer:
A
Explanation:
Bacterial cells are easy to grow, maintain, and manipulate in a laboratory
Answer:
a
Explanation:
The combination of dominant tree species in Eastern forests will likely change in the future. Some forest types,
including spruce/fir and maple/beech/birch, may shrink significantly or disappear altogether, depending on how
greatly carbon dioxide emissions increase in the future. How would you adapt your behavior to create a different
scenario, one in which the was no substantial change in the tree species over time? Select the tactic that would be of
NO help.
A) Increase your demand for green products and services to reduce your
carbon footprint.
B)Consider alternate energy resources that are not carbon-based: solar or
wind energy
C)Eat locally-produced and organic food; cur meat and dairy consumption.
D)Manage lands for restoration and watershed conservation
Answer:
C) Eat locally-produced and organic food; cur meat and dairy consumption.
Explanation:
Eating organic food will be of no help because humans do not usually use forest trees as food resources. And hence, it will be of no help to stop the carbon dioxide emissions. Hence, option C will be of no help.
The consumption of green products will lead to lesser production of carbon dioxide and hence can be helpful. Using alternate energy sources which are not carbon based will also help to reduce the amount of carbon dioxide. If lands are restored then, these trees will not change over time. Hence, option A, B and D are helpful for no substantial change in the tree species over time.
Answer:
The answer is Not C It is D. I just had the test.
Explanation: Answer C While this is also a positive action, it is not an action that would result in a decrease of carbon emissions. So It is answer D.
Which describes a population depending on an abiotic factor?
Answer:
Hello!
I'm assuming the options are:
A) A bean plant does not grow well because it is planted where there are many weedy plants.
B) Coral reef organisms carry out photosynthesis using the sunlight that passes through the clear water above.
C) Squirrels eat eggs from a bird's nest.
D) A hawk preys on a mouse.
The answer is B) Coral reef organisms carry out photosynthesis using the sunlight that passes through the clear water above.
Explanation:
An abiotic factor is a non-living factor of an ecosystem that influences the biotic factors and the population inhabiting that ecosystem.Option A describes competition between two plants. This is an example of a relationship between two biotic factors (bean plant and weeds)C again describes the food relationship between two biotic factors (squirrel and bird's eggs).D is an example of predator-prey relationship which is also an example of two biotic factors influencing each other. B describes how coral reefs (biotic factor) utilizes sunlight (abiotic factor) to produce food and and oxygen through photosynthesis.Abiotic factors such as sunlight, rainfall, and temperature affect populations. Organisms have a range of tolerance for abiotic factors, and some species act as indicator species for specific factors.
Explanation:Abiotic factors are the physical and chemical characteristics of the environment that affect populations. For example, the amount of sunlight, rainfall, available nutrients, oxygen levels, and temperature are all abiotic factors. These factors determine the success of populations and can influence the types of organisms that can live in a particular area. For instance, the amount of annual rainfall can determine whether a region is a grassland or forest, which in turn affects the types of animals living there.
Abiotic limiting factors can have a range of tolerance for a population. A species may have a narrow tolerance range for a specific abiotic factor. For instance, a freshwater fish species may have a narrow tolerance range for dissolved oxygen in the water. If the dissolved oxygen level decreases due to eutrophication, the species will die. This fish species can act as an indicator species, as its presence or absence indicates the dissolved oxygen content of the lake.
Assume that life on Earth began 3.5 billion years ago. To the nearest percent, how much of this time have anthropoids been living?
Answer:
Anthropoids lived for approximately 0.86% of the total time.
Explanation:
Anthropoids are the higher developed organisms that includes apes and ape mans.The age of earth is 3500 million and anthropoids lived for about 30 million years. By the simple calculations we can find out the data in percent which gives us the result nearest to 0.86%.That means 0.86% of 3.5 billion year is equivalent to 30 million years (time that was lived by anthropoids).Answer:
approximately 0.86%
Explanation:
Which process results in offspring with a genetic makeup identical to that of the parent?
1. Fusion of gametes
2. Vegetative propagation
3. External fertilization
4. Meiotic cell division
Answer:1
Explanation:
The approximate percentage of Earth's freshwater contained in glaciers is
3 percent.
31 percent.
69 percent
98 percent.
About 69% of Earth's freshwater is contained in glaciers. The rest of the Earth's freshwater exists as groundwater, surface water, or in other forms.
Explanation:The approximate percentage of Earth's freshwater contained in glaciers is about 69 percent. Although the Earth might seem abundant in water, not all of it is readily available or usable for human purposes. The majority of Earth's water is saline, contained in oceans and seas. The freshwater on Earth is majorly stored in two forms: ice caps and glaciers, and groundwater. Ice caps and glaciers account for the largest portion of freshwater, while the remaining portion exists as groundwater, surface water, and other sources. Therefore, given the provided options, the correct answer is 69 percent.
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Macromolecules are made of subunits called monomers. What are the monomers of protein called?
Answer: Amino acid
Explanation: proteins are made up of amino acids or we can also say that amino acids are the building block of proteins molecules. Amino acids are the basic subunit of the protein. Different Amino Acid joins and forms large molecules called polymers of protein.
The monomers of proteins are called amino acids, each consisting of an amino group, a carboxyl group, and a side chain.
Amino acids are organic compounds made up of four key components: an amino group (-NH2), a carboxyl group (-COOH), a hydrogen atom, and a side chain or R-group, which is unique to each amino acid.
The amino and carboxyl groups are crucial functional groups that define an amino acid's chemical properties and behavior.
There are 20 standard amino acids that serve as the building blocks for protein synthesis.
The variations in the R-group give each amino acid its distinct characteristics, including size, shape, charge, and chemical properties.
Amino acids link together through peptide bonds, forming linear chains called polypeptides.
When a peptide bond forms, a molecule of water is released in a condensation reaction. This repetitive bonding pattern forms the primary structure of a protein.
The sequence of amino acids in a protein chain is determined by the genetic information encoded in DNA.
Proteins exhibit a hierarchical structure, including primary, secondary, tertiary, and quaternary structures, which result from the interactions and folding of the polypeptide chains.
The specific sequence and arrangement of amino acids dictate a protein's final three-dimensional shape and function.
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What is major thing happening to a cell during G1
Answer: The cell synthesizes mRNA and proteins preparing it for cell division.
Explanation: During this phase the cell also synthesizes enzymes and nutrients for the process of cell division.
helpppppp pleasseeee
Answer:
i beleve it would be 700 newtons
Explanation:
Answer: your answer will be 1.75 joules
Explanation: With your formula W= F x D take 20 (F) AND 35 (D) calculate it to get your final results ( it will might be 1.75) ( i apologize i am not very good)
which action is a reflex action
A reflex action is an automatic or involuntary and the rapid response to a particular stimulus, which minimizes any kind of damage to the body from the potentially harmful conditions, such as touching something hot.
What is Reflex action?A reflex, or reflex action, is an involuntary, unplanned sequence or action and is nearly instantaneous response to a specific stimulus. Reflexes are found to be of varying levels of complexity in different organisms with a different type of nervous system. A reflex action occurs by the neural pathways in the nervous system called the reflex arcs.
The common examples of reflex action are coughing, yawning and blinking of eyes.
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A reflex action is an involuntary response to a stimulus, exemplified by jеrking the hand away from a hot surface, and occurs via a reflex arc in the nervous system.
The concept of reflex action is fundamental in biology when discussing the nervous system and its responses to stimuli. A reflex action is an involuntary and nearly instantaneous movement that occurs in response to a stimulus. Unlike voluntary actions, which are under the conscious control of the mind, reflex actions happen automatically, without the need for conscious thought. An example of a reflex action can be the jеrking away of the hand from a hot surface. This action is because the external stimulus (the heat from the hot surface) starts impulses in neurons at the body's surface, prompting an immediate response.
Reflex actions are carried out through a reflex arc, consisting of sensory neurons, interneurons, and motor neurons. When a stimulus is strong enough, it triggers sensory neurons, which pass the information via interneurons to motor neurons, resulting in a reflex movement. This process happens very rapidly and does not involve the brain.
Which of these is used to find the estimated age range of a fossil?
Absolute dating
Half-life
Index fossils
Radioactive dating
Answer:Its Absolute Dating
Explanation:
absolute dating methods provide chronological estimates of the age of certain geological materials associated with fossils, and even direct age measurements of the fossil material itself.
The area that includes everything between the cell membrane and the nucleus of a cell is called the ___________.
A.
vacuole
B.
Golgi apparatus
C.
mitochondria
D.
cytoplasm
Answer:
D. Cytoplasm.
Answer:
The area that includes everything between the cell membrane and the nucleus of a cell is called the CYTOPLASM
Explanation:
Cytoplasm includes everything in the cell and outside the nucleus of that cell
what physical health risks are directly associated with urban sprawl?
Answer:
The risks of various pollution and infections increase with urban sprawl.
Urban sprawl can be described as a condition in which the people from urban area migrate to low residential areas due to which the city starts to expand more in size.
During urban sprawl, more water contamination is likely to be caused as the water available cannot support such a large number of migration. There is not proper sewage system due to which contamination arise and cause sickness in the people. Also, these areas have more pollution due to traffic jam situations which causes sickness.
Answer:
The physical health risks that are directly associated with urban sprawl is pollution and infections. During an urban sprawl, there are increased chances of water pollution and poor drainage system which can ultimately affect a population because the water can release toxins into one's body, which can cause diseases and illnesses. The respiratory system will get affected because when there is a population increase, the amount of air pollutants release would increase giving chances to lung cancer and breathing problems.
Many things can cause an organism to become extinct. Here are some possible
causes of extinction. Select the human causes of extinction.
Global warming
Pollution
Habitat destruction
Disease
ANSWER QUICK WILL GIVE BRANLIEST
The human cause for extinction are as follows:
Pollution Habitat destructionAnswer: Option B and C
Explanation:
Extinction of an species or organism is defined as condition where existence of certain species of living organism will completely be destroyed.
Extinction can be caused both by natural causes such as evolutionary changes, Global warming and also by man-made activities such as deforestation, Pollution and Habitat destruction etc. Cause of Infectious disease usually does not take as primary one.
Human has a major involvement in polluting the environment through various activities which can destroy the existence of various living species and habitat destruction which is also due to the activity of human (deforestation or over harvesting of lands for agriculture)can cause extinction.
Which sentence supports the statement that complex multicellular
Complete Question: Which sentence supports the statement that complex, multicellular organisms are made up of specialized cells that each perform different functions for the body?
A. Human liver cells make proteins that promote homeostasis that neurons do not.
B. Different species of bacteria have different shapes and structures to their cells.
C. The DNA in the cell nucleus of chimpanzees and humans are 98% identical.
D. Prokaryotes do not have nuclei, but they can still carry out the basic functions of life.
Answer:
A. Human liver cells make proteins that promote homeostasis that neurons do not.
Complex multicellular organisms are made up of different cells which are combined to form the non-identical organs and tissues e.g (heart, liver etc.) .These organs carry out totally different function for the sustenance of organism.
5. Apply Ideas An object has a mass of 10 g and a volume of 5 cm. w
its density?
24
hinge science activity.
Answer:
2
Explanation:
density=mass÷volume
how does studying the life cycle of microorganisms relate to modern medicine?
a. the life cycle of microorganisms can provide important evidence of environmental degradation
b. the life cycle of microorganisms can provide clues to how cells in the human body regulate themselves
c. scientists study the life cycle of microorganisms me in order to fine a way to treat cancer and other chronic illnesses
d. science study the life cycle of pathogens in order to find a way to interrupt the course of disease and the spread of infection
Science study the life cycle of pathogens in order to find a way to interrupt the course of disease and spread of infection. Scientist study the life cycle of microorganism in order to find a way to cancer and other chronic illness.
Explanation:
The life cycle of microorganisms causing disease in the human is studied to know what agents or antibiotics would stop their activity. There are techniques used such as chemotherapy to kill the invading viruses. The antibiotics are made this way to stop bacterial growth. The agents would be invented to put stop at the particular phase of the life cycle to inhibit growth of the pathogen. It would get convenient to make agents if at immune level it is known what phase of their cycle is reactive.
Studying the life cycle of microorganisms is important in modern medicine to find ways to interrupt the course of disease and prevent the spread of infection.
Explanation:Studying the life cycle of microorganisms is directly related to modern medicine because it helps scientists understand how pathogens cause disease and how to interrupt their course of infection. By studying the life cycle of microorganisms, scientists can find ways to treat chronic illnesses and develop strategies to prevent the spread of diseases. For example, understanding the life cycle of cancer cells can lead to the development of targeted treatments. Therefore, option d, 'Scientists study the life cycle of microorganisms in order to find a way to interrupt the course of disease and the spread of infection,' is the correct answer.
Which words from the excerpt best help to define the
tone? Check all that apply.