Answer:
R-selected species often experience EXPONENTIAL growth in population, giving a J-SHAPED curve on a graph.
R-selected species are those that have high growth rate. These species may produce many offspring but not all will survive into adulthood.
Answer:
1. EXPONENTIAL
2. J-SHAPED
Explanation:
took test got 100
What is typically responsible for forming volcanic island chains in the oceans?
A. Hot spot volcanism
B. Fissures
C. Composite volcanoes
D. Shield volcanoes
hot spot volcanism is the answer
On Sunday, a strong gale blows near Beth’s house. The best estimate for the wind speed is miles/hour. Note: One knot is about the same as 1.15 miles/hour.
Select the correct answer from each drop-down menu.
Category
Wind Speed (knots)
Description
0
less than 1
calm
1
1–3
light air
2
4–6
light breeze
3
7–10
gentle breeze
4
11–16
moderate breeze
5
17–21
fresh breeze
6
22–27
strong breeze
7
28–33
near gale
8
34–40
gale
9
41–47
strong gale
10
48–55
storm
11
56–63
violent storm
12
64+
hurricane
Answer:
The answer is: The best estimate for the wind speed is 47.15 - 54.05 miles/hour.
The knot is a unit of speed equal to one nautical mile per hour, approximately 1.15 mph.
The ISO standard symbol for the knot is kn.
v(wind) = 41-47 kn; speed of strong gale.
v(wind) = 41 · 1.15 mph.
v(wind) = 47.15 mph.
v(wind) = 47 · 1.15 mph.
v(wind) = 54.05 mph.
In the biosphere, cycles can be very complex and interdependent. No cycle happens in isolation.
Answer: Thrue
Explanation:
which is used for slective breeding? natureql selection survival of the fittest overproduction or offspring
Answer:
is the process of breeding only organisms with desirable traits
Explanation:
the evolution of lungs and gills, which developed to serve a similar gas-exchange purpose in distantly related organisms, is an example of what type of evolution?
A. convergent evolution
B. natural selection
C. emergent evolution
D. divergent evolution
Answer:
A. Convergent evolution
Explanation:
If analogous or structurally different oragns performing similar function.. We call that convergent evolution.
Answer:
The correct answer is option A, that is, convergent evolution.
Explanation:
The convergent evolution in evolutionary biology refers to the phenomenon in which the organisms that are not closely associated, that is, not monophyletic, autonomously evolve identical characteristics as a consequence of having to amend to ecological niches or identical surroundings.
For example, the evolution of lungs and gills that serves similar functions in distant organisms is an illustration of convergent evolution.
Arrange the events to describe how one earthquake happens.
1)The plates create great stresses in rocks near the edges of the plate
2)The intensity of the earthquake reduces with the distance from the epicenter
3)Large chunks of Earth called tectonic plates collide with each other
4)The seismic waves created at the hypocenter spread out radially and cause shaking wherever they travel.
5)The energy released causes shaking of Earth in that position.
6)The edges of the plates slide past each other in close contact.
7)The separation of the plates release a great amount of energy.
Final answer:
Earthquakes are caused by the movement of tectonic plates and their interactions at boundaries where they may slide past each other or collide. This results in the release of energy that causes seismic waves, leading to ground shaking and potential damage at various distances from the earthquake's epicenter.
Explanation:
To describe how an earthquake occurs, we need to arrange the given steps in a logical sequence:
Large chunks of Earth called tectonic plates collide with each other.The plates create great stresses in rocks near the edges of the plates.The edges of the plates slide past each other in close contact, or one plate may slide under another in a subduction zone.The separation or slippage of the plates releases a great amount of energy.The energy released causes shaking of Earth at that position, known as the hypocenter or focus of the earthquake.The seismic waves created at the hypocenter spread out radially and cause shaking wherever they travel.The intensity of the earthquake reduces with the distance from the epicenter.Understanding the relationship between earthquakes and plate tectonics is crucial, as the movement of tectonic plates is the underlying cause of these seismic events.
Earthquake magnitude and intensity are different measures; magnitude quantifies the energy released at the source of the earthquake, while intensity describes the level of shaking and damage caused by the earthquake at various locations.
Earthquakes can have dire consequences, such as the destruction of buildings, fires, slope failures, liquefaction, and if near the sea, triggering deadly tsunamis.
An earthquake occurs as a result of tectonic plate interactions, which lead to stresses and eventual release of energy that causes ground shaking. The earthquake's impact, including infrastructure destruction and potential tsunamis, diminishes with distance from the epicenter.
Explanation:Sequence of an Earthquake EventTo understand how one earthquake happens, we can arrange the provided events in a sequence that describes the entire process:
Tectonic plates collide with each other, creating friction and stress along their boundaries.The plates create great stresses in rocks near the edges of the plate.The edges of the plates slide past each other in close contact, which continues to build stress.Eventually, the separation of the plates release a great amount of energy, overcoming the frictional forces that were holding them together.The energy released causes shaking of Earth in that position, known as the earthquake's hypocenter.The seismic waves created at the hypocenter spread out radially and cause shaking wherever they travel, known as the earthquake's epicenter.The intensity of the earthquake reduces with the distance from the epicenter, as energy dissipates.These steps outline the relationship between earthquakes and plate tectonics. An earthquake's magnitude is a measure of the energy it releases while the intensity reflects the level of shaking and damage caused which diminishes with distance from the epicenter. Earthquakes can cause destruction of buildings and infrastructure, fires, slope failures, liquefaction, and tsunamis.
Genes are sections of DNA that contain information to make a protein. Genes can be turned on or off to control the protein production process. If a gene is not turned off, it is possible for too many proteins to be produced. Which of the following may be a benefit of the overproduction of proteins? a Mutated genes may become normal. b Injury repair may occur more quickly. c The cells of an organism may be destroyed. d An organism may develop cancer.
Answer:
B Injury repair may occur more quickly
Explanation:
Gene expression controls protein production, which is essential for cell function. Overproduction of proteins can sometimes be beneficial, such as hastening injury repairs, but can also lead to detrimental effects, like causing cancer.
Option B is correct
Explanation:Genes, which are sections of DNA, contain the information needed to produce proteins. Gene expression, or the process of turning on a gene to produce RNA and protein, is controlled by the cell to ensure the right amount of protein is produced at the right time. The regulation of protein production is fundamental for cell function and health.
Regarding the potential benefits of overproducing proteins, option b, 'Injury repair may occur more quickly', could be considered beneficial. Increased protein production could speed up processes in the body like tissue repair and cell growth. However, it's important to note that not all overproduction of proteins is beneficial. In fact, abnormal protein production could lead to severe problems. For example, as stated in option d, an overproduction of proteins can lead to the development of cancer. This occurs when genes that stimulate cell division (proto-oncogenes) become overly active or when genes that suppress tumors do not function properly, causing uncontrolled cell growth and proliferation.
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A dense group of bacteria that are difficult to treat with antibiotics is called
Answer: staphylococci bacteria.
Explanation:
Answer:
The correct answer will be biofilm.
Explanation:
Biofilm is an aggregate of micro-organisms formed of one or more types which can grow on different surfaces such as dental plaque formed on the surface of teeth. The biofilm mass is mostly composed of proteins, extracellular polysaccharides (EPS), and DNA.
Bacterial formed biofilms show resistant to antibiotics like biofilm formed by Staphylococcus aureus which causes wound infections. Poly-microbial biofilms are usually more resistant to antibiotics compared to single-species biofilms. EPS present in the biofilm attaches antibiotics.
Thus, biofilm is the correct answer.
Some scientists theorize that continental movements may cause climate changes by _____.
altering the makeup of the troposphere
redistributing Earth’s vegetation
changing patterns of ocean currents
shifting the equatorial and temperate zones
Answer: Changing Patterns Of Ocean Currents Is The Correct Answer.
Answer:pollution i believe is the answer
Explanation:
Plants contain the carbohydrates starch and cellulose. In the spring when stem growth is at its fastest rate, cellulose production rates are increased in
some plants. In the months with less sunlight, the level of starch decreases in some plants. What does this information demonstrate?
A.
B.
Two functions of carbohydrates are structural support and energy storage
Two functions of carbohydrates are structural support and transferring genetic information
C.
Plants cannot produce carbohydrates when there is no sunlight
D.
Carbohydrates are not necessary for plants to grow
Answer:
B. Two functions of carbohydrates are structural support and transferring genetic information
Explanation:
Carbohydrates are synthesized in green plants, thanks to photosynthesis, in which carbon dioxide (CO2) and water are converted into glycides, with energy provided by light. The energy stored in the glucose molecule during photosynthesis is released in the degradation (catabolism) of glucose, producing water and CO2.
From the point of view of metabolism, the main function of carbohydrates in plant organisms is to provide energy and provide structural support. This can be seen in the question above, because we can see that in spring, when stem growth is at its fastest pace, cellulose production rates increase in some plants, while in months with less sunlight, the level of starch decreases in some plants.
The information highlights the two functions of carbohydrates in plants which are to provide structural support (cellulose) and act as an energy storage (starch). These functions change depending on environmental conditions such as the amount of sunlight available.
Explanation:This information demonstrates that two significant functions of carbohydrates in plants include structural support and energy storage. The production of cellulose, a carbohydrate, increases in the spring when stem growth is fastest because it aids in providing structural support to the growing stem. The level of starch, another carbohydrate, decreases in months with less sunlight because starch is primarily used by plants as an energy storage molecule and energy production decreases when sunlight is less available.
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Which process led to the release of large amounts of carbon dioxide at the end of the Devonian period?
A. The breakup of Pangaea
B. The extinction of plant life
C. The melting of glaciers
D. The volcanic activity
It is c my friend hope this helps
Answer:
Option (D)
Explanation:
The Devonian period represents the fourth period of the Paleozoic era, ranging from about 420 million years to 360 million years back. This period represents the age of fishes because a variety of fish species were present and also during this time, the plants that colonized on the land areas started undergoing evolution giving rise to the formation of gymnosperms.
By the end of this period, about 360 million years ago, massive and rapid volcanic eruptions took place, that released an extensively large amount of carbon dioxide into the atmosphere. This eventually lead to a mass extinction event, eliminating nearly 80% of the total living species present on earth.
Thus, the correct answer is option (D).
What question did both Lamarck and Darwin try
to answer with their theories of evolution?
A What is the role of DNA in the inheritance of
traits?
B What causes populations of organisms to
change over time?
C What are the patterns of heredity in sexually
reproducing organisms?
D What happens to beneficial traits when popula-
tions undergo natural selection?
B
They tried to explain the leading factors that caused organisms to change.
Final answer:
Both Lamarck and Darwin tried to answer the question of what causes populations of organisms to change over time.
Explanation:
Both Lamarck and Darwin tried to answer the question of what causes populations of organisms to change over time? Darwin proposed the mechanism of natural selection, which states that individuals with traits that are more favorable for their environment are more likely to survive and reproduce, leading to a change in the characteristics of a population over generations. Lamarck, on the other hand, proposed the idea of acquired characteristics, where he believed that traits acquired by parents during their lifetime can be passed on to their offspring.
If a cell has 26 chromosomes, how many chromosomes will be in each of the daughter cells produced through mitosis? How many daughter cells will be created?
Answer:
13
Explanation:
At the end of mitosis there would be half the amount of cells. Therefore, 13 daughter cells.
half the amount of cell.
13 daughter cells will be created.
What is mitosis?In cell biology, mitosis is part of the cell cycle in which replicated chromosomes are separated into new nuclei. cell division by mitosis gives rise to genetically identical cells wherein the total number of chromosomes is maintained. therefore, mitosis is also known as equational division.
Mitosis is the process by which a cell replicates its chromosomes and then segregates them, producing two equal nuclei in preparation for cell division. Mitosis is normally followed by an equal division of the cell's content into daughter cells that have identical genomes.
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what is an abiotic factor in a tropical rain forest?
the trees
the plant life
the top predator
the rain
Answer:
D. The rain
Explanation:
It cannot be A, B, or C because those are all LIVING organisms and abiotic is not alive. The canopy is part of the trees which is alive same for the next 2 options
So option D is your answer
What would happen if a major predator was removed from the food web?
Answer:
Prey population explosion
Explanation:
If a major predator is removed from the ecosystem, it will disturb the predator-prey relationship in the ecosystem that will result in the direct increase in the prey population. This phenomenon is called population explosion where there is no check and balance on the prey population.
For example, if there is a major predator in the forest ecosystem it will feed on herbivores and keep their population at a certain level. This is called predator-prey balance where predators kill prey which in-turn cause food scarcity for predators and leads to a decrease in predator population too. So if any major predator is removed from ecosystem it will disturb this intricate balance.
Hope it helps!
Answer:
The population of prey would increase/
Explanation:
Hope this helps. :>
Why do researchers believe that mammals evolved such large brains, such as that of hadrocodium?
Cause mammals are the only species that are well developed before birth unlike marsupial and monotremes
Mammals evolved large brains, such as that of Hadrocodium, to support complex behavior and cognitive abilities. The development of a convoluted cerebral cortex and specialized structures allows for improved brain communication and increased surface area.
Explanation:Researchers believe that mammals evolved large brains, such as that of Hadrocodium, because increased brain size is correlated with complex behavior and cognitive abilities. These larger brains provide mammals with the capacity to process and integrate sensory information, problem-solve, and exhibit more advanced social behaviors. The development of a highly convoluted cerebral cortex and specialized structures, such as the corpus callosum, allow for increased surface area and improved communication between brain regions.
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Using recombinant DNA technology the gene for temperature resistance in fish is inserted into strawberries. These genetically modified strawberries are a type of ____ organism.
Answer:
Transgenic
Explanation:
Recombinant DNA technology is used to make transgenic organisms. Genetic material from one specie is inserted into the genome of another thus modifying its characteristics. There are several ways of doing this including electroporation and transduction. This process is referred to as genetic engineering.
Answer:
transgenic
Explanation:
Why does a coastal area have less variation in temperatura than a noncoastal area?
The temperatures on land change more rapidly than temperatures on water.
Answer:
Due to high specific heat capacity of water as compared to land
Explanation:
The specific heat capacity of water is much higher as compared to land. Specific heat is the amount of heat required to raise the temperature of anything by a unit degree ( of either Celsius or Fahrenheit).
Thus, water in ocean and coastal areas take much longer time to heat. In the same way coastal areas need much longer time to release the absorbed heat. Thus, the temperature is coastal area is more or less stable as compared to non coastal areas where cooling and heating of the atmosphere takes place quickly.
I need a sentence with the word chloroplast in it.
Answer:
Plant cells carry chloroplasts: organelles containing the pigment chlorophyll, which they employ to entrap sunlight
Hope this helps!
Chloroplasts have chlorophyll in them, this is a green pigment which helps to trap sunlight which enables photosynthesis for a plant.
Which of the following enzymes is used to make radioactively labeled DNA?
A. DNA nuclease
B. DNA phosphatase
C. DNA polymerase
D. DNA ligase
Answer:
C. DNA polymerase
Explanation:
DNA polymerase is the enzyme that makes new DNA strands using existing DNA strand as a template. Use of radioactive deoxyribonucleotides as raw material for DNA synthesis makes DNA polymerase to use these radioactively labeled dNTPs to make new DNA strands.
Hence, DNA polymerase enzyme can make radioactively labeled DNA by using radioactive deoxyribonucleotides as raw material.
Final answer:
The correct enzyme for creating radioactively labeled DNA is C. DNA polymerase; it allows the addition of labeled nucleotides during replication or PCR.
Explanation:
The enzyme used to make radioactively labeled DNA is DNA polymerase. This enzyme adds nucleotides to a DNA strand during replication or PCR (polymerase chain reaction), allowing the incorporation of radioactively labeled nucleotides. In contrast, DNA nuclease breaks down DNA molecules, DNA phosphatase removes phosphate groups, and DNA ligase joins DNA strands together. When synthesizing cDNA from RNA, reverse transcriptase is used to reverse transcribe RNA into DNA. Additionally, eukaryotic cells use telomerase during DNA replication to extend the ends of chromosomes. The enzyme primase synthesizes an RNA primer, which is then extended by DNA polymerase. During DNA proofreading, DNA polymerase reads the DNA to correct errors. In the case of a cell strain with impaired joining of Okazaki fragments, the enzyme most likely to be mutated would be DNA ligase.
What condition is required for ATP synthase to move hydrogen down its gradient?
A. More hydrogen ions inside the membrane than outside it
B. More hydrogen ions outside the membrane than inside it
C. A day with 75 percent direct sunlight
D. More ATP molecules ahead of the hydrogen than below it
Answer:
A. More hydrogen ions inside the membrane than outside it
Explanation:
During electron transfer from water molecule to PS II and then through electron transport chain to the PS I pumps the hydrogen ions inside the thylakoid lumen. ATP synthesis is driven by energy of proton concentration gradient that moves the hydrogen ions (protons) from lumen of thylakoid membrane towards the stroma. Hence, ATP synthesis requires presence of more hydrogen ions inside the membrane.
50 POINTS
Which is the best definition of conservation biology?
the research of threatened species
the use of science to restore ecosystems
the protection of habitats in national parks
the passing of laws to reduce pollution
Answer:
the research of threatened species
is the answer because Conservation biology is the management of nature and of Earth's biodiversity with the aim of protecting species
Explanation:
Answer:
the use of science to restore ecosystems- second choice
why cell theory is still a theory, not a scientific law?
Answer:
The cell theory does not have enough support to become a law. Cell theory is referred to as the history of scientific theory. All cells come from pre-existing cells, and that is the basic unit reproduction and a basic unit of all organisms. Cell theory did not become a law because the scientist who discovered it, did not give it a credit to become a law but a theory. Hope this answer your question :)
The cell theory does not have enough support to become a law. Cell theory is referred to as the history of scientific theory. All cells come from pre-existing cells, and that is the basic unit reproduction and a basic unit of all organisms.
Explain the cell theory?The cell theory states that all biological organisms are composed of cells; cells are the unit of life and all life come from preexisting life.
The cell theory is so established today that it forms one of the unifying principles of biology.
Thus, Cell theory did not become a law because the scientist who discovered it, did not give it a credit to become a law but a theory.
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The concentration of salt is higher inside a cell than outside the cell. The concentration of water inside the cell is lower than it is outside. Salt cannot pass through the cell membrane. What will happen to the concentrations of water and salt? A. Water will move into the cell through diffusion. The salt concentration will be greater inside than outside. B. Water will move out of the cell through diffusion. The salt concentration will be less inside than outside. C. Water will move into the cell through osmosis. The salt and water concentrations will become similar inside and outside the cell. D. Water will move out of the cell through osmosis. The salt and water concentrations will become similar inside and outside the cell.
Answer:
C. Water will move into the cell through osmosis. The salt and water concentrations will become similar inside and outside the cell.
Explanation:
Osmosis is the movement of water from the region of its higher concentration to that of lower concentration through a semi permeable membrane. Here, the cell have higher salt concentration and lower water concentration as compared to its outside. Since cell membrane is semi permeable, salt can not pass through it. So, water will move into the cell through osmosis to equalize the salt and water concentration on either side of cell membrane.
Kudzu is a vine that was brought to the United States from Japan to prevent erosion. Once here, kudzu became invasive.
What role does kudzu most likely play in the environment in the United States?
Answer:
Kudzu competes with native plants for sunlight and nutrients, making it an invasive plant species. It could also be considered a parasite since it allows less sunlight to reach the plants that Kudzu covers.
Answer:
Kudzu competes with native plants for sunlight and nutrients.
Explanation:
Kudzu has become an invasive plant in the United States. At first, we can imagine that invasive plants do not cause major impacts to the environment, however, any species that is introduced in a new location affects the entire ecosystem considerably. Invasive plants multiply in large numbers and end up competing with the plant species that live there, by sunlight and nutrients.
Briefly, we can say that the invading plant completely removes the space of native plants. They come to dominate the natural landscape, to modify the natural cycles that existed in that ecosystem and, consequently, threaten the local biodiversity.
Which statement best describes the process of sexual reproduction?
A.
Pollen is released with the aid of wind and water.
B.
A sperm cell fertilizes a vertebrate's egg cell, creating a zygote.
.
C.
A mushroom ejects spores into the air even in the harshest conditions.
D.
A regular house fly begins as a maggot after budding.
Answer:
b
Explanation:
the answer is b. hope this helped!
Which of the five senses contains two types of photoreceptors called rods and cones?
a.
vision
c.
smell
b.
hearing
d.
taste
---------------------------------------------------------------------------------------------------------
a. Vision
----------------------------------------------------------------------------------------------------------
The vision sense contains photoreceptors called rods and cones. Rods detect light and dark and are crucial for peripheral and night vision, while cones function under bright light allowing us to see color and detail.
Explanation:The sense that contains two types of photoreceptors known as rods and cones is vision. These photoreceptors are located in the retina, a layer at the back of the eye. Rods are responsible for detecting light and dark, making them crucial for peripheral and night vision. Cones, on the other hand, allow us to see color and detail as they function best under bright light conditions.
Vision is the sense that contains two types of photoreceptors called rods and cones. Rods are responsible for vision in dim light, while cones allow for color vision and work best in bright light.
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Invasive species often unbalanced the ecosystem into which they are introduced because
Answer:
Invasive species are those species that are non native to a given ecosystem of concern and also whose introduction causes or is likely to cause economic or environment harm or harm to the organisms in the ecosystem. They are considered as the second most threat to biodiversity, after habitat loss.
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A species has homologous chromosomes. What does this say about the
species?
O
A. It has alleles that control certain traits,
O
B. It has pairs of matching chromosomes,
O
C. It is a eukaryote and a haploid species.
O
D. It has DNA that is made up of genes.
B. it has pairs of matching chromosomes.
Have a great day!
If a species has homologous chromosomes it means that It has pairs of matching chromosomes.
What are homologous chromosomes?One of a pair of chromosomes with the same gene sequence, locations, chromosomal length, and centromere placement is referred to as a homologous chromosome. One paternal and one maternal chromosome make up a homologous pair. In the nucleus of a somatic cell in humans, there are 46 chromosomes in total. The father inherits half of them (22 autosomes + X or Y chromosome) and the mother inherits the other half (22 autosomes + X chromosome). During meiosis, each maternal chromosome pairs up with a matched paternal chromosome.learn more about homologous chromosomes here:
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We eat food for nutrients and energy. Our digestive system does the work to physically and chemically digest or decompose the food we eat. But how do the nutrients and energy-rich molecules get to our cells? What systems and organs are involved? A) The digestive and cardiovascular systems are involved. Digestion takes place in the intestines and nutrients and carbohydrates are absorbed into the blood there for distribution to all cells. Eliminate B) The digestive and excretory systems are involved. Digestion takes place in the intestines and nutrients and carbohydrates are absorbed into the blood stream; wastes leave the body via the excretory system. C) The digestive, cardiovascular and skeletal systems are involved. Digestion is completed in the small intestines. Sugars, fats and amino acids are absorbed into the bloodstream and nutrients into the bone marrow of the skeletal system. D) The digestive, cardiovascular and lymphatic systems are involved. Digestion is completed in the small intestines. Nutrients, sugars and amino acids are absorbed into the bloodstream and glycerol and fatty acids into the lymphatic system.
Answer:
the correct answer is D.
Explanation:
Nutrients and energy-rich molecules from digested food are transported to cells via the digestive and cardiovascular systems, with the lymphatic system also playing a role in lipid absorption. Digestion begins with mechanical and chemical processes, and absorption occurs mainly in the small intestine where nutrients enter the bloodstream or lymphatic system.
D is correct
Explanation:The nutrients and energy-rich molecules are transported to our cells through a collaborative effort of several systems, chiefly the digestive system, the cardiovascular system, and the lymphatic system. After food is consumed, it undergoes two types of digestion - mechanical and chemical. The former breaks food into smaller pieces, beginning in the mouth and continuing in the stomach, whereas the latter breaks down food molecules into small nutrient molecules and begins with saliva in the mouth and continues with stomach enzymes.
The absorption of these nutrients mostly occurs in the small intestine, where they pass into the blood vessels lining the intestine to enter the bloodstream. In the case of lipids, the glycerol and fatty acids are absorbed into the lymphatic system before being released into the bloodstream. After absorption, the nutrients are circulated to all the cells for energy production and cellular functions. Meanwhile, waste products and non-absorbed materials pass through the large intestine for excretion, facilitated by the excretory system.