Answer:
an ion
Ion is smaller then all them and doesn't belong here.
Why is it important to keep environment clean and healthy?
Answer:
Importance of keeping the environment clean. Environment is a place where humans as well as plants and animals live. ... It is necessary to keep our environment clean because we get fresh air, reduce pollution etc. An unclean environment leads to a bad condition of a society, arrival of diseases and many more
Explanation:
hope this helps!- Lexi
I recently had a biology exam and one of the questions was: at what trophic level does the leopard feed. with the attached picture. i thought it was pretty obvious that they wanted the trophic levels of the animals the leopard eats so i answered fourth and second level. teacher said it was wrong they wanted the troophic level the leopard is at . what do you think the question asks for since i lost marks for it and am confused
HELP!
Item 7
Which type of stress can cause an anticline?
force
shear
tension
compression
Final answer:
Compression stress causes rocks to squeeze together and form anticlines, and is common at convergent plate boundaries.
Explanation:
The type of stress that can cause an anticline is compression. When compressional stress occurs, rocks are squeezed together and it typically results in the rock layers bending into arch-like shapes known as anticlines. Such stress is most common at convergent plate boundaries, where tectonic plates move towards each other, causing the crust to thicken and buckle.
what organelle would you expect to find in large numbers in cells that pump stomach acid out against a concentration gradient? Give a reason for your answer.
Explanation:
They contain more mitochondria.
Energy in the form of ATP is required to pump hydrogen ions against the concentration gradient. Active transport is a mediated process that requires the use of specialized membrane proteins these proteins require energy in the form of avenues and triphosphate or ATP in order to facilitate necessary conformational changes to the large protein molecules
In all eukaryotic cells, mitochondria are small cellular organs bound by membranes, making up most of the chemical energy needed to power the cell's biochemical reactions. This chemical energy is stored inside the generated molecule ATP. Respiration in the mitochondria uses oxygen for the production of ATP in the cycle of the Krebs or Citric acid via pyruvate oxidation (through the cytoplasm glycolysis process).
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Consider an atom that has 9 electrons. How many electrons would be found in this atom's valence shell?
Answer: 7 electrons
Explanation: In the first orbital shell it can only hold a maximum of 2 electrons.
The second orbital or energy level it can hold a minimum of 1 and maximum of 8 electrons.
Since the first shell has 2 electrons it means that the second shell has 7 electrons.
Snake's and worms have no legs and share a similar tube-like body structure.
Describe how you could determine how closely related these two types of organisms are.
Can someone please help me out.
I will mark you brainlylist
Answer:
Snake and worm are not closely related. Snakes are vertebrates (with a backbone) while worms are invertebrates (with no backbone). So, snake and worms have different anatomy. But the apperance of both organisms have similar features: worms has long, thin, and shiny body which looks like a snake but both have no legs. Movement patterns for both are also similar. Similarly, both organisms show a similar type of skin, habitat, and sensory organs.
Final answer:
To determine how closely related snakes and worms are, comparative anatomy, molecular biology, and evolutionary biology techniques are employed to examine the structural, genetic, and evolutionary differences between these organisms.
Explanation:
To determine how closely related snakes and worms are, one approach is to use comparative anatomy, which involves examining the structural similarities and differences between organisms. Despite their similar shape, snakes are vertebrates as they have an internal skeleton, whereas worms encompass various invertebrate groups such as flatworms, roundworms, and segmented worms, each with different anatomical features. For example, roundworms are pseudocoelomates with a complete digestive system, while flatworms lack a respiratory or circulatory system. Snakes, on the other hand, have evolved from a tetrapod ancestor and possess complex organ systems, such as a three-chambered heart and a very flexible jaw.
Molecular biology is another method used to assess relationships, through examining DNA and protein sequences to quantify genetic similarities and differences. Lastly, the field of evolutionary biology which includes phylogenetic analysis helps in constructing evolutionary trees that depict relationship histories based on shared characteristics and genetic data.
Determine whether each statement below describes traditional or modern classification.
A based on similar appearance
based on evolutionary relationships
Aknown as Chadistics
known as Linnaean classification
DONE
1
Intro
Answer:
Based on similar appearance - traditional
Based on evolutionary relationships- modern
Known as cladistics- modern
Known as Linnaean classification- traditional
Explanation:
Linnaeus was a Swedish Botanist who was the first to classify organisms based on the structural similarities which organisms had. This method of classification came to be known as the Linnaean classification. Organisms which had more closer resemblances in structures and features had more groups or taxa in common.
The modern system of classification depends on the evolutionary history of organisms. It determines which organisms are more closely and have common ancestors in the past.
Answers for the entire assignment for e2020! This will help future people in order to get a excellent grade! :)
Determine whether each statement below describes traditional or modern classification.
(Answers)
Traditional Classification is based on similar appearance
Modern Classification is based on evolutionary relationships
Modern Classification is known as Cladistics
Traditional Classification is known as Linnaean classification
Which piece of information provided the stimulus for the shift from traditional classification to modern classification?
Answer: An understanding that species share a common ancestor
Fill in the blank below with the vocabulary word that best completes the sentence.
Using a ______ clock, scientists are able to estimate the amount of time that two species have been evolving independently.
Answer: molecular
How does the molecular clock work?
Answer: It compares the number of mutations that exist in the DNA of two different species.
Select the correct word from the drop-down menu to complete the sentences.
______ are branching diagrams that depict the evolutionary relationship among species.
Answer: Cladograms
_____ is a point in a cladogram where a single ancestral lineage breaks into two or more descendant lineages.
_____ is a group of organisms that includes an ancestor and all of its descendants.
_____ is any named group of organisms, whether they form a clade or not.
Answer(s):
Node
Clade
Taxa
According to the cladogram, which of the following is the derived characteristic shared by amphibians and reptiles?
Answer: Lungs
After much research and DNA analysis it has been determined that species in the same clade are actually more distantly related than originally thought. What is one way that the cladogram may change because of this information?
Answer: A node would be introduced
According to the cladogram, which species are MOST closely related?
Answer: D and E
Use the cladogram about fish to answer the following questions.
Which of the following best describes the organism located at point B?
Answer: Has jaw, but no bones
The organism at location D is the ______ to organisms at location A, B, and C.
Answer: Ancestor
According to the cladogram, arthropods are MOST closely related to which group of organisms?
Answer: annelids
You're welcome! :)
The water cycle shows the movement of water in the Earth system.
Please select the best answer from the choices provided
ОТ
Answer:
there are are no choices provided .
Explanation:
Populations can have variety, despite being made up of the same species. If a population has different expressed traits, this can be due to different inherited alleles. Genetic drift can cause a change in allele frequency in a population. What if you had to explain genetic drift to a friend who has not watched the video? Use the comics below in your narration of genetic drift. Refer to comic A, comic B, and comic C in your narrative. You can use the comics in any order you choose!
Answer:
As comic is not available, lets try to understand genetic drift generally.
Explanation:
Genetic drift can be described as the changes in the allele frequency or changes in the genotype variations of a population due to certain reasons such as death etc. In genetic drift, a particular genotype of a species starts to decrease, while the other genotype might start to increase. For example, imagine there are 6 colours of rabbits to be seen in a population. An event such as a diseases takes over which results in death of most of the rabbits. Only a few rabbits are left having brown and grey colour. Hence, the genetic drift changes from 6 to only 2.
7. What role do plants play in the water cycle?
Answer:
absorb ground water.
Explanation:
Role of Plants in Water Cycle
They absorb groundwater, that is, water collected below ground level due to percolation of rain water, through their root system. ... Vegetation plays an important role in the water cycle by preventing soil erosion and increasing groundwater levels.
Plants play a crucial role in the water transport from the ground to the atmosphere - a process known as transpiration. This not only helps in the redistribution of water but also in temperature regulation. During periods of drought, plants can conserve water by closing their stomata.
Explanation:Plants play an integral part in the water, or hydrologic, cycle. They absorb water from the soil through their roots due to the properties of water molecules. This process is known as transpiration. The water is then transported from the roots, up through the stem, and to the leaves. Once in the leaves, the water evaporates into the atmosphere, contributing to the formation of clouds and precipitation.
The process by which plants pull water from the ground and release it as water vapor is crucial to the environment. Not only does it help in the redistribution of water, but it also aids in temperature regulation, as the evaporation process has a cooling effect.
However, plants also have an important role in the conservation of water, especially during periods of drought. Certain mechanisms within the plant can cause the stomata to close, reducing water loss and helping the plant conserve water.
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A local factory has been dumping chemicals into a nearby river that resulted in the death of many aquatic dwelling organisms. This is an interaction between which to spheres? Atmosphere and biosphere Atmosphere and cryosphere Hydrosphere and biosphere Hydrosphere and geosphere
Answer:
Hydrosphere and Biosphere
Explanation:
the factory is dumping into the water which is cycled through the hydrosphere, Than the chemicals are killing organisms which are part of the biosphere...
Dumping chemicals into a nearby river by local factory, that resulted in the death of many aquatic dwelling organisms is caused by interaction between - Hydrosphere and bisophere.
In this case their is chemical waste is dumping in the river which is a human activity that caused water pollution in river which inturn causes death of the aquatic organisms.
Hence, there are two intrection human activity to river and polluted river to death of aquatic organisms.
Hydrosphere - is a sphere that include all the water bodies present on the earth surface including ocean and rivers.Biosphere - As it is clear with the name a sphere deals with biology or living organisms is biosphere, irrespective the place they found earth surface or under water such as humans and aquatic animals.On the basis of the given explanation we can say that there is interaction between hydrosphere and biosphere.
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(Apex) Which best describes how fossil fuels form?
A. Farms are used to produce natural gas.
B. Natural gas is burned to form coal and oil.
C. Sunlight converts grass to coal and oil.
D. Decayed organisms are compressed underground.
D
fossil fuels form when decayed organisms are compressed underground.
Explanation:
Usually, when biotic matter especially algae and plankton die they sink to the bottom of the oceans. They get overlaid by layers of sediments over time. As the layers of sediment increase, the pressure from the overlying weight causes the organic matter (which is largely carbon-based) to be compressed, and high temperatures associated with the high pressure, causing them to metamorphose into crude oil.
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The statement best describes the fossil fuels are Decayed organisms are compressed underground. option D is correct.
Fossil fuels are formed from the remains of ancient plants and animals that lived millions of years ago. These organisms, such as plants and algae, captured energy from the sun through the process of photosynthesis.
When these organisms died, their remains accumulated in layers on the Earth's surface, such as in swamps, oceans, or lakes. Over time, these layers of organic matter were buried under sediment, such as mud, sand, and rocks.
As more and more sediment piled up, the organic matter was subjected to immense pressure from the weight of the overlying layers. This pressure, combined with heat from the Earth's crust, caused the organic matter to undergo physical and chemical changes.
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What does the Earth look like after its collision with Theia (the collisio
that formed the Moon)?
Answer:
The Earth looks like an oblong non-uniform object after its collision with Theia (the collision that formed the Moon)
Explanation:
Though the size of Earth was very small compared to Theia, the Earth survived in the sideway collision and the moon was gradually formed. Theia is believed to be of the size of Mars and its diameter was approximately 3,800 miles. Many wonder how Earth survived the collision with Theia and stay intact in its orbit.Following the collision with Theia, Earth was left in a molten state, with debris from the impact forming the Moon. Earth's surface has been reshaped by plate tectonics and erosion, hiding evidence of such ancient impacts.
Explanation:Aftermath of Earth's Collision with TheiaThe Earth after its collision with Theia, a Mars-sized body, was a dramatically altered planet. The Giant Impact Hypothesis suggests that this collision occurred around 4.5 billion years ago and was powerful enough to send debris into orbit around Earth, which eventually coalesced to form the Moon. The impact would have left Earth extremely hot, with a surface covered by a magma ocean. Craters like those on the Moon are less visible on Earth due to processes like plate tectonics and erosion, which have continually reshaped Earth's surface, erasing such ancient impact scars.
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which factors determine strength of gravitational force between two objects?
mass and distance
speed and size
density and mass
mass and temperature
Answer:
mass and distance
The factors determine strength of gravitational force between two objects is mass and distance. Thus, option A is correct.
What is law of conservation of mass?The declaration that best represents the law of conservation of mass is as follows:
Mass of Reactants = Mass of Products.
The law of conservation of mass states that the overall mass of substances that remarkably take part in a chemical reaction is conserved during the reaction. It is neither created nor destroyed in a chemical reaction.
As a result of this, the mass of substances during a chemical reaction remains the same. This implies that the mass of reactant molecules is definitely equal to that of the mass of the product molecules. The mass of reactants equal to the mass of products is the statement that best represents the law of conservation of mass.
Therefore, The factors determine strength of gravitational force between two objects is mass and distance. Thus, option A is correct.
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does PTC have a scent
PTC (Phenylthiocarbamide) does not have a detectable scent. It is used to demonstrate genetic differences in taste perception, where the ability to taste it is determined by specific gene variants.
Phenylthiocarbamide (PTC), often used in genetic tasting experiments, does not have a scent that can be detected by humans. The chemical substance itself is used primarily in a taste test to demonstrate genetic variance in taste perception. PTC tasting is a classic example of a trait that exhibits Mendelian inheritance patterns, where the ability to taste PTC is a dominant genetic trait. Individuals who can taste PTC describe the compound as having a bitter taste, while those who cannot taste it are referred to as "taste-blind." The presence of specific versions (alleles) of this gene determines an individual's sensitivity to tasting PTC and similar bitter compounds, such as those found in Brussels sprouts and cabbage.
Which is an example of condominance
Answer:
When two alleles for a trait are equally expressed with neither being recessive or dominant, it creates codominance. Examples of codominance include a person with type AB blood, which means that both the A allele and the B allele are equally expressed.
Explanation:
Consider the two male oryx that are shown below.
Which of Charles Darwin's main points is depicted in the image?
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Organisms within a population compete with each other to survive.
-
Answer:
B on Edg2021
Explanation:
Took it
The image portrays Charles Darwin's theory of Natural Selection, specifically the principle of competition within a population due to a limit in resources. Characteristics that provide an advantage in this competition are more likely to be passed on to the next generation. The oryx's might be competing for resources like food, water, or mates, leading to an evolution of the population over time through survival of the fittest.
Explanation:The image of the two male oryx's in your question seems to depict one of Charles Darwin's main points, this being natural selection, which is a key mechanism of evolution. The principle of competition within a population is central to Darwin's theory of natural selection. According to this theory, more offspring are produced than can survive due to limited resources, leading to intra-species competition. Characteristics that provide an advantage in this competition are more likely to be passed on to the next generation. Thus, those who inherit the favorable traits have a higher chance of survival and reproduction.
From the example of the two oryx's, we may guess that they might be competing for resources such as food, water, territory, or mates. This competition could lead to survival of the fittest where the oryx with the best suited traits for survival in its specific environment would have more offspring that will share those traits, leading to an evolution in the population over generations.
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Which is the function of this structure?
Answer:
B. To exchange oxygen with carbon dioxide
Explanation:
The function of this structure of alveoli is to exchange oxygen with carbon dioxide, hence option B is correct.
The tiny air sacs in the lungs are called alveoli. Capillaries, which are little blood arteries, round the alveoli. With the help of these capillaries, the alveoli exchange oxygen and carbon dioxide.
The walls of each alveolus are extremely thin and cup-shaped. Capillaries, a type of blood vessel with thin walls, form a network around it. The alveoli and capillaries in your body allow the oxygen you breathe in to diffuse into your blood.
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how many chromosomes are in a human gamete
Answer:
23 chromosomes
Answer:
. In humans, gametes are haploid cells that contain 23 chromosomes, each of which a one of a chromosome pair that exists in diplod cells.
Explanation:
PLZ HELPED IM TIMED14 Photosynthesis and cellular respiration are two processes that help drive Earth's carbon
cycle. Which of the following statements best describes one of these processes?
A. Photosynthesis releases water as an end product.
B. Respiration releases oxygen that is utilized by animals.
C Photosynthesis depends on the presence of carbon dioxide.
D. Respiration depends on the presence of water in the atmosphere
Answer: C). Photosynthesis depends on the presence of carbon dioxide.
Explanation: Photosynthesis is a process by which green plants use chlorophyll to manufacture their own food in the presence of carbon dioxide, water and sunlight. The products of photosynthesis are glucose and oxygen.
Answer:
C
Explanation:
describe three variations
you would observe as
you travel south from a
taiga into a temperate
forest.
Answer;
When we will travel south from a taiga into a temperate forest we will observe 1. Increased precipitation as in taiga the prevailing climatic conditions are still harsh with less rain fall where as in temperate forest precipitation ranges from about 70 to 150 cm annually. 2. Increase in temperature as taiga has long, severe winters and short, mild summers whereas the average temperature in temperate forest is around 50 degree Celsius. 3. Change towards hardwood (deciduous) trees as Taiga, forms an almost continuous belt of coniferous trees worldwide whereas Temperate or deciduous forests are dominated by broad-leaved hardwood trees
The three variations are increased precipitation, increase in temperature, and change towards hardwood (deciduous) trees.
What is temperate forest?A temperate forest is a forest found in the temperate zone between the tropical and boreal regions.
It is the world's second largest biome, accounting for 25% of total forest area, trailing only the boreal forest, which accounts for 33%.
Temperate deciduous forests are most noteworthy since they go through four seasons: Winter, Spring, Summer, as well as Fall.
Leaves change color (or senesce) in autumn, fall off in winter, and regrow in spring, allowing plants to survive cold winters.
As one travel south from a taiga into a temperate forest one would have been able to observe richer top layer of soil, you would start noticing both an increase in temperature and precipitation, and you would notice change towards deciduous trees
Thus, these are the three variation as one travels from south taiga to temperate forest.
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Some individuals are predisposed to medical conditions such as that were
inherited from their parents.
Answer:
Some individuals are predisposed to medical conditions such as that were
inherited from their parents due to "genetic predisposition"
Explanation:
A genetic predisposition (occasionally also named genomic vulnerability) is an improved probability of emerging a specific illness created on a being's inherent makeup. A genetic predisposition consequence from precise inherent disparities that are often congenital from a parent. These inherent variations subsidize to the growth of a illness but do not straight cause it. About people with a predisposing inherent disparity will not ever get the sickness though others will, even inside the similar family.
How is climate change threatening the availability of sea ice?
Answer:
The glaciers are melting and sea levels are rising
What types of materials are expelled from cells during exocytosis?
Question 8 options:
large molecules such as hormones
positive and negative ions
small molecules such as carbon dioxide
water and glycerol
Answer:
small molecules such as carbon dioxide
Explanation:
Exocytosis is a process used for the release of secretory materials from cells. Vesicles containing secretory materials fuse with the plasma membrane releasing their contents to the outside. The golgi bodies receive certain materials from the endoplasmic reticulum and package them into secretory vesicles.
In which layer is the pressure the highest?
O
A. The lower mantle
O
B. The inner core
O
c. The outer core
O
D. The crust
if the gametes are produced by a female what are they called
Answer:
eggs
Explanation:
Which interaction is most likely to result in the most competition among the organisms?
Grasshoppers and caterpillars eat oak leaves.
Producers and scavengers eat deer carcasses.
Sagebrush and cacti obtain light in the desert.
Lions and vultures eat the remains left after a lion kill.
Answer: grasshoppers and caterpillar eat oak leaves
Explanation:
Answer:
The answer is A- grasshoppers and caterpillars eat oak leaves
Explanation: i took the test
how do you find a percent of cells at rest?
Answer:
memory cells are in a resting state, a small percentage ... Apparently this replacement is maintained by cytokines.
es
Viruses, although not considered to be alive, attack host cells and cause disease. The attack of a host cell is necessary for the
virus to survive for all of the reasons listed EXCEPT one. That is
they cannot synthesize proteins because they lack ribosomes and must use
the ribosomes of their host cells to translate viral messenger RNA into new Eminate
proteins
they cannot produce or store energy in the form of ATP and have to get
their energy from the host cell
they parasitize the host cell for basic molecules like amino acids,
nucleotides, and lipids,
they lack DNA/RNA so they must use the DNA of the host cell
Submit
Sign out
Answer:
The correct answer is : They lack DNA/RNA so they must use the DNA of the host cell.
Explanation:
In general, Viruses are composed of two major parts, a genetic material - DNA or RNA (depending upon the type of virus) and a capsid protein coat that encloses and protects the genetic material.Without a genetic material no matter can be considered as living as there will be no multiplication and replication possible.Viruses need the host for its metabolism, replication and multiplication process.After infection, they hijack the cells protein-synthesising machinery, the ribosomes, and utilise the host cell's energy (ATP) for synthesising their own proteins encoded in their genetic material.They utilise the basic components of the host cell like amino acids, nucleotides and lipids for synthesising their own proteins, replicating and producing multiple copies of their genetic material and also producing their coat proteins and lipids.This way the infection-causing virus produces multiple virion particles that exit the infected host in search for new host and repeating this life-cycle.Show me a ribosome location in a cell structure
Answer:
Ribosomes are found moving freely in the "cytoplasm and sometimes can be seen attached to the Endoplasmic Reticulam"
Explanation:
In the cytoplasm the RIbosomes are found moving freely, but sometimes it has been observed that ribosomes are attached with the Endoplasmic Reticulam and forming the rough Endoplasmic Reticulam. When the ribosomes are bound to the particular mRNA strand, the structure formed is known as polysomes. The existence of the ribosomes are not permanent as well. Basically the ribosomes are made up of the nucleolus. Ribosomes helps in the making of the protein.