Answer:
The correct answer for this is: Microevolution.
Explanation:
The change of England's Biston betularia moth populations from light colored to dark colored is an example of 'Microevolution'.
Basically, the change that occurs over time in the allele frequencies within a group of species or population is known as microevolution.
The four processes due to which this change occurs include gene flow, selection (natural and artificial), mutation and genetic drift.
Answer:
Microevolution.
Explanation:
Which best describes the outcome of DNA replication? The new DNA molecule consists of one strand of DNA. The new DNA molecule accumulates a new strand of DNA with each replication. The new DNA molecule consists of one new strand and one old strand of DNA. The new DNA molecule contains new DNA, and the old molecule keeps the old DNA.
Answer:
The new DNA molecule consists of one new strand and one old strand of DNA
Answer:
The correct answer is the third statement.
Explanation:
The replication of DNA refers to a biological phenomenon, which produces two similar molecules of DNA that are the replicas of the original molecule of DNA. The double-stranded DNA gets distinguished into two template strands. Each of the template strand functions as a guiding strand for generating a counterpart known as a complementary strand.
The complementary and the template strands attach with each other to produce a new double-stranded DNA. Thus, the new molecule of DNA comprises one new strand (complementary strand) and one old strand (template strand) of DNA.
Which atmospheric layer prevents meteoroids from reaching Earth's surface?
mesosphere
stratosphere
thermosphere
troposphere
Answer:
mesosphere layer - first choice
Answer: Option B. "Mesosphere"
Explanation:
Atmospheric layer that prevents meteoroids from reaching Earth's surface is mesosphere.
The mesosphere is the highest layer of the atmosphere and above the stratosphere. In the mesosphere layer, the air relatively mixed together in this layer and the temperature decreases along with the altitude and most of the meteors burn up in the mesosphere.
Thus the correct option is mesosphere.
Why do scientists conduct experiments?
A. To test their results.
B. To explain an observation.
C. To test a hypothesis.
D. To test a conclusion.
Briefly explain how nerve impulses travel in a body?
Answer:
When a nerve impulse reaches the end of an axon, the axon releases chemicals called neurotransmitters. Neurotransmitters travel across the synapse between the axon and the dendrite of the next neuron. Neurotransmitters bind to the membrane of the dendrite.
Nerve impulses travel through the body because of neurons.
In a neuron, stimuli always propagate in the same direction: they are received by the dendrites, go through the cell body, travel through the axon and, from the end of it, are passed to the next cell (dendrite - cell body - axon).
The nerve impulse that propagates through the neuron is of electrical origin and results from changes in the electrical charges on the outer and inner surfaces of the cell membrane.
The membrane of a resting neuron has a positive electrical charge on the outside (facing outside the cell) and a negative charge on the inside (in contact with the cell's cytoplasm). When that membrane is in such a situation, it is said to be polarized. This difference in electrical charges is maintained by the sodium and potassium pump. Thus separated, the electrical charges establish a potential electrical energy across the membrane: the membrane potential or resting potential (difference between the electrical charges across the membrane).
When a chemical, mechanical or electrical stimulus arrives at the neuron, there may be a change in the permeability of the membrane, allowing large sodium to enter the cell and small potassium to leave it. With this, there is an inversion of the charges around this membrane, which is depolarized generating an action potential. This depolarization spreads through the neuron, characterizing the nervous impulse.
Immediately after the impulse passes, the membrane undergoes repolarization, recovering its resting state, and the transmission of the impulse ceases.
The stimulus that generates the nervous impulse must be strong enough, above a certain critical value, which varies between different types of neurons, to induce depolarization that transforms the resting potential into an action potential. This is the threshold stimulus. Below this value, the stimulus only causes local changes in the membrane, which soon cease and do not trigger the nervous impulse.
Any stimulus above the threshold generates the same action potential that is transmitted along the neuron. Thus, there is no variation in the intensity of a nervous impulse due to the increase in the stimulus; the neuron obeys the "all or nothing" rule.
Thus, the intensity of the sensations will depend on the number of depolarized neurons and the frequency of impulses. Imagine a burn on your finger. The larger the burned area, the greater the pain, as more receptors will be stimulated and more neurons will be depolarized.
Use the cladogram about fish to answer the
following questions.
Bones
Jaws
Which of the following best describes the
organism located at point B?
does not have jaws
has bones, but not jaws
has bones
has jaws, but not bones
DONE
Answer: Has jaws but no bones
Explanation:
which species biological calssification translates to the goddess of hairy shellfish and was first discovered in the pacific ocean in 2005
Answer:
Kiwa hirsuta (aka the yeti crab).
Explanation:
Kiwa hirsuta is biological calssification translates to the goddess of hairy shellfish and was first discovered in the pacific ocean in 2005.
Question 3 of 10
2 Points
A paleontologist finds a plant fossil that shows evidence of a vascular
structure. What can the paleontologist conclude?
O
A. It was a sporophyte.
B. It was a gametophyte.
C. It was an ocean plant.
D. It was a land plant.
If a paleontologist finds a plant fossil that shows evidence of a vascular structure, he can conclude that it was a land plant. Thus, the correct option is D.
Who is Paleontologist?A Paleontologist may be defined as a scientist who is a specialist in the study of past life forms that existed in previous geologic periods, as represented by their fossils. The science that deals with the life of past geologic periods as known from fossil remains are known as paleontology.
Sporophyte plants are non-vascular plants such as Mosses. The gametophytes have no vascular tissues at all. Ocean plants are rooted in the soil deep in the soil. They do not have vascular tissues.
Land plants such as banyan trees, mango trees, etc. have well-defined vascular structures for the transport of food and nutrients from the soil to the entire plants.
Therefore, if a paleontologist finds a plant fossil that shows evidence of a vascular structure, he can conclude that it was a land plant. Thus, the correct option is D.
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The government of a flood-prone region wants to implement some measures to reduce the risk of floods, Which method is likely to reduce the risk of
floods in that region?
A.
deforestation
B.construction of bridges in rivers
C.building concrete roads
D. preservation of wetlands
Answer:
The correct answer is option D. "preservation of wetlands".
Explanation:
Wetland are areas of lands that are saturated with water, usually comprised by marshes or swamps. Preservation of wetlands help to reduce the risk of floods because wetlands temporarily store and slow the release of stormwater. It has been reported that areas where wetland have been lost, the chances of flood increases by as much as 80 percent. The government of a flood-prone region would likely reduce the risk of floods by preserving its wetlands.
Answer:
D. preservation of wetlands
Explanation:
Which statement accurately describes a P wave? A. A P wave travels more slowly than an S wave. B. A P wave can travel through liquids. C. A P wave moves particles up and down or side to side. D. A P wave can move through solid rock only.
Answer:
P wave can travel through liquids
Explanation:
Two main types of seismic waves are P wave and S wave. P waves stand for pressure waves or primary waves.
P waves are the first waves signal during the earthquake.P wave can travel through any media , the media can be liquid, gas and solid. P waves can not move the particles side to side and up and down.
Thus, the correct answer is option (B).
Answer:
P wave can travel through liquids
Explanation:
Which unit is used for measuring atomic mass?
A.
atomic mole
B.
grams/mole
C.
grams
D.
atomic mass unit
E.
atomic mass weight
Answer:
D. atomic mass unit
Explanation:
The atomic mass unit is used for measuring atomic mass.
ANSWER:
The correct option is D: Atomic Mass Unit. Atomic mass is the "mass of an atom" of elements which is measured in amu or atomic mass unit.
EXPLANATION:
The atomic mass is found to be equivalent to the "number of protons and neutrons" in an atom which is also the "mass number" of an atom. The atomic mass is known as atomic weight which is equal to the "weighted average" of "isotopes" of an element.Figure 17-3 shows smaller and larger beaks in a population of finches. One group of birds has a short, parrot-like beak and another group has a long, narrow beak. What process has probably occurred?
Answer:
Natural selection has occured, and through evolution, the finches have evolved to adapt to their surroundings.
Answer:
disruptive selection
Explanation:
The question above shows a situation resulting from the disruptive selection process.
Disruptive selection is a type of natural selection that allows individuals with more extreme characteristics to be favored by the environment and end up having a better chance of surviving and generating descendants. Individuals with intermediate characteristics end up being disadvantaged and have less chance of survival.
In relation to the question above, we can say that the short-beaked birds will have greater facilities in breaking seeds and therefore will be favored. Long-billed birds will find it easier to reach worms for food. On the other hand, medium-billed birds (intermediate characteristics) will be less favored both in hunting worms and in breaking hard seeds.
which correctly shows the transfer of energy within an ecosystem?
A. producer, decomposer, herbivore omnivore
B.carnivore, herbivore, decomposer, omnivore
C. omnivore, carnivore, herbivore, primary consumer
D. producer, herbivore, carnivore, decomposer
producer, herbivore, carnivore, decomposer (option D).
The correct sequence showcasing the transfer of energy within an ecosystem is producer, herbivore, carnivore, decomposer. The cycle begins with producers who are eaten by herbivores. These herbivores in turn are eaten by carnivores. Lastly, decomposers break down all the dead or waste materials, returning nutrients back to the ecosystem.
Explanation:The correct order that shows the transfer of energy within an ecosystem is producer, herbivore, carnivore, decomposer (option D). The cycle initiates with producers like plants or phytoplankton, which convert light energy into useful forms via photosynthesis or chemosynthesis. These producers, forming the base of the ecosystem, are consumed by herbivores, termed as primary consumers. Secondary consumers, often carnivores, feed on these primary consumers. Lastly, decomposers, such as fungi and bacteria, break down all the dead organisms or waste materials from each trophic level, recycling nutrients back into the ecosystem.
Learn more about Energy Transfer within an Ecosystem here:https://brainly.com/question/33726417
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Use the periodic table to identify the name of atomic number for each element below. (Give the name not the chemical symbol for each element)
Answer: Hafnium-72
15-Phosphorus
45- Rhodium
Osmium-76
Magnesium-12
Explanation:
Explanation:
Hafnium is a transition element and belongs to period six. It's atomic number is 72.
Element with atomic number 15 belongs to group 5 and period third. Name of this element is phosphorous. Symbol that represents phosphorous is P.
Element with atomic number 45 is a transition element and it belongs to period 5. Name of this element is rhodium and it is represented by the symbol Rh.
Osmium is also a transition element and belongs to period six. It's atomic number is 76.
Magnesium is a group 2 element and belongs to third period. Atomic number of magnesium is 12.
Hence, we can conclude that complete information in the given table will be as follows.
hafnium : atomic number 72
phosphorous : atomic number 15
rhodium : atomic number 45
osmium : atomic number 76
magnesium : atomic number 12
The movement of tectonic plates in two locations is described below: 1) Location A Tectonic plates push together. 2) Tectonic plates pull apart. Which statement is most likely true? A) ocean basins May form in both locations. B) volcanic eruptions May occur in both locations. C) ocean basins May form in location A but not in location B. D) volcanic eruptions May occur in location B but not in location A.
Answer:
The answer is D.
Explanation:
Plates which pull apart are known as divergent plate boundaries, while plates which push together are known as convergent plate boundaries. At divergent plate boundaries, magma flows up from the inner parts of the earth and flows out. When it cools and turns to stone, types of volcanoes are left. Magma is stored inside the volcanoes.
Describe what happens in budding
VERY URGENT --- GIVING AWAY 50 POINTS
Sort these problems into three groups; problems with bones, problems with muscles, and other problems.
-torn muscle
-osteoporosis
-tendonitis
-scoliosis
-arthritis
-fracture
-muscular dystophy
-torn ligament
Answer:
Explanation:
Problems with bones
osteoporosis
arthritis
fracture
-scoliosis
-tendonitis
Problems with muscles
torn muscle
muscular dystophy
torn ligament
tendonitis
Problems with bones:
-osteoporosis
-fracture
-scoliosis
-tendonitis
Problems with muscles:
-torn muscle
-muscular dystophy
-tendonitis
Others:
-arthritis
-torn ligament
Select the correct answer from each drop-down menu.
The_____(lysosome, ribosome ,nucleus)
gets rid of cell waste by breaking down large molecules into smaller ones for the cell to excrete. The____(Golgi apparatus,cell membrane, endoplasmic reticulum)
helps these waste molecules exit the cell.
Answer: Lysosome, Cell Membrane
Explanation: Lysosomes are little sacs in the cell that latch onto waste materials and break them down (I've found an easy way to remember this is to remember that the root "lys" means "to split" or "to break down"). As for the second part, the Cell Membrane is the outermost layer of the cell, and is responsible for allowing things in and out of the cell.
Answer:
Answer: Lysosome, Cell Membrane
Explanation: Lysosomes are little sacs in the cell that latch onto waste materials and break them down (I've found an easy way to remember this is to remember that the root "lys" means "to split" or "to break down"). As for the second part, the Cell Membrane is the outermost layer of the cell, and is responsible for allowing things in and out of the cell.
Explanation:
no
which of these is true for bacteria because they are prokaryotic cells
a- they can destroy neutrophils
b- they are much smaller than lymphocytes
c- they can invade macrophages
d- they are much larger than killer T cells
Which of the forest management practices keeps the florist in a state of mid to late succession
D. seed-tree cutting
Blank) reproduction allows for species to evolve or adapt to a greater range of conditions.
1. Asexual. 2. Sexual
Sexual reproduction allows for species to evolve or adapt to a greater range or conditions.
Sexual reproduction brings two sets of genes to the table to be passed to the offspring, since there are two parents. Asexual reproduction only has one parent so the offspring will only get one option of genes. This means that asexual reproduction does NOT allow adaptation.
Hope this helped!
~Just a girl in love with Shawn Mendes
sexual reproduction
Explanation:
gp this helps!!
Amino acids bond to each other using hydrogen bonds. true or false
Answer:
The correct answer is false
Explanation:
What types of animals are Dolphins And Elephants
A: Amphibians
B: Arthropods
C: Predators
D: Mammals
Please need help fast
Answer:
Mammals are the warm-blooded vertebrates that can be found in water and land. The dolphins and elephants are the examples of:
Option D. Mammals
Explanation:
Mammals are organisms characterized by the presence of mammary glands, warm-blood, four-chambered heart, and are viviparous. Dolphins and elephants also belong to the category of mammals because they exhibit the characteristics of the phylum Mammalia. Elephants and dolphins are placental mammals, which give birth to young ones.
Reasons for incorrect answers:
A. Amphibians are organisms that can live on land and water. The animals are characterized by cold-blooded, reproduce externally, and skin is limy and smooth. Examples include frogs and salamanders.
B. Arthropods are generally known as insects, which consisted of jointed appendages, segmented bodies, and lack vertebral column. Examples include spiders and cockroaches.
C. Predators are the organisms that attack and kill prey. For example, a tiger is a predator, who kills and feeds on deer and antelope.
Therefore, mammals are the highest classification in kingdom Animalia, which are characterized by mammary glands and the ability to deliver young ones. Elephants and Dolphins are the examples of mammals.
For Further Reference:
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What is so important about phospholipids being insoluble in water?
A. it allows our cells to absorb water
B. it allows them to function similar to fats
C. it prevents our cells from absorbing water
D. it allows our cells to dissolve without having to exert energy
Answer:
D. it allows our cells to dissolve without having to exert energy
Explanation:
Phospholipids being insoluble in water is so important because it allows our cells to dissolve without having to exert energy.
Drag each tile to the correct box.
Lucia is walking barefoot in her yard. She accidentally steps on a nail. How will her nervous system work to generate a reaction? Arrange the events chronologically.
Interneurons relay the impulse to motor neurons in the spinal cord.
She immediately moves her foot.
The sensory neuron generates an impulse.
Receptors in her toe receive stimuli.
Motor neurons signal the leg muscles.
Answer:
Correct order is
a) Receptors in her toe receive stimuli.
b) The sensory neuron generates an impulse.
c) Inter neurons relay the impulse to motor neurons in the spinal cord.
d) Motor neurons signal the leg muscles.
e) She immediately moves her foot.
Explanation:
Foot of Lucia contains stimuli receptors. As Lucia steps on the nail, the receptors in the toe receives the stimuli and hence her sensory neurons becomes active and they generate an impulse. These impulses are transmitted from sensory neurons via inter neurons to the brain. Brain processes the information and sends the message via inter neurons to the motor neurons. Motor neurons then signals the leg muscles and then she immediately removes her leg away from the pin.
Hence correct order is
a) Receptors in her toe receive stimuli.
b) The sensory neuron generates an impulse.
c) Inter neurons relay the impulse to motor neurons in the spinal cord.
d) Motor neurons signal the leg muscles.
e) She immediately moves her foot.
Final answer:
The events in the nervous system when Lucia steps on a nail form a reflex arc, starting with pain receptors and following through sensory neurons, interneurons in the spinal cord, motor neurons, and finally resulting in muscle contraction and movement.
Explanation:
The student's question pertains to the sequence of events that occur in the nervous system when Lucia steps on a nail. To answer this question, we will arrange the events in chronological order as they would happen within a reflex arc.
Receptors in her toe receive stimuli.
The sensory neuron generates an impulse.
Interneurons relay the impulse to motor neurons in the spinal cord.
Motor neurons signal the leg muscles.
She immediately moves her foot.
The sequence starts with the activation of pain receptors (nociceptors) when the nail is stepped on. This stimulus is then conveyed through sensory neurons to the spinal cord, where it is processed by interneurons.
The interneurons quickly transmit the impulse to motor neurons, which signal the leg muscles to contract, resulting in the immediate withdrawal of the foot. This entire process forms a reflex arc, allowing for a rapid response without the need for brain involvement.
In a paragraph, explain what effect very large small pores and their diffusion rates would have on the workings and mechanisms of a cell
Answer:
Despite differences in structure and function, all living cells in multicellular organisms have a surrounding cell membrane. As the outer layer of your skin separates your body from its environment, the cell membrane (also known as the plasma membrane) separates the inner contents of a cell from its exterior environment. This cell membrane provides a protective barrier around the cell and regulates which materials can pass in or out.
Explanation:
MARK BRAIN LIST
Answer:
Small pores are effective in cellular transportation as compared to large pores.
Explanation:
If the pores of the cell membrane become large in size then the rate of diffusion into and out of the cell would be very fast. This is not a good situation as in an organism with uncontrolled/high rate of cellular transfers could lead to death of cells. Hence small pores are effective in maintaining the required permeability , material transfers across the membrane, turbidity and water pressure for osmosis.
What are Mendel’s three laws of inheritance
Answer:
Mendel's studies yielded three "laws" of inheritance: the law of dominance, the law of segregation, and the law of independent assortment. Each of these can be understood through examining the process of meiosis.
When a human or animal consumes food, the carbon in that food is most likely to be converted into which of the following elements?
oxygen
nitrogen
carbon remains carbon
hydrogen
I HAVE TO FINISH THIS IN 3 MINS
Answer:
Carbon remains carbon
Explanation:
An atom of one element does not change into an atom of another element.
That's why A, B, and D are wrong.
At higher elevations, the boiling point of water decreases, due to the decrease in atmospheric pressure. As a result, what could be
said about hard boiling an egg?
a. At higher elevations, it would take less time to hard boil an egg, because there is less atmospheric
pressure.
b. At higher elevations, it would take longer to hard boil an egg, because there is a lower boiling point,
the egg is boiling in water at a lower temperature.
c. At higher elevations, it would take less time to hard boil an egg, because there is a lower boiling point
Therefore it would take less time to achieve the boiling point.
d. At higher elevations, it would take longer to hard boil an egg, because it would take longer to achieve
the boiling point
b. At higher elevations, it would take longer to hard boil an egg, because there is a lower boiling point, the egg is boiling in water at a lower temperature. The correct answer is that at higher elevations, it takes longer to hard boil an egg because the water boils at a lower temperature due to reduced atmospheric pressure.
At higher elevations, the boiling point of water decreases due to the decrease in atmospheric pressure. When hard boiling an egg, this means that the water will boil at a lower temperature, so the correct answer is: b. At higher elevations, it would take longer to hard boil an egg, because there is a lower boiling point, the egg is boiling in water at a lower temperature.
The interaction between atmospheric pressure and boiling point is such that as pressure decreases, the boiling point also decreases. This means that at higher elevations where the pressure is lower, water does not reach as high a temperature when it boils compared to sea level, which implies that cooking an egg thoroughly will require more time as the temperature at which energy is transferred to the egg is lower.
All animals are A. autotrophs. B. biotrophs. C. heterotrophs. D. polytrophs.
Answer:
C. Heterotrophs
Explanation:
Heterotrophs cant make their own food. They cant make there own food so they eat animals and plats and all sorts of different things. Because of this heterotrophs are known as consumers. Anything that consumes/eats things are consumers.
Which statement describes an advantage of asexual reproduction?
Answer:
no mate is required
Explanation:
It requires less energy.