Answer:
Explanation:
How the resting membrane potential is established in a neuron. ... Ions move down their gradients via channels, leading to a separation of charge that ... through brief, controlled changes in the permeability of their cell membrane to particular ... If you did this, you would measure an electrical potential difference, or voltage, ...
Membrane permeability is affected by temperature, the type of solute present, and the degree of cell hydration. Increasing the temperature makes the membrane more unstable and very fluid. Lowering the temperature slows the speed of the membrane.
Does the permeability change during the action potential?Action potentials, the main electrical signal produced by nerve cells, reflect changes in membrane permeability to specific ions.
The important point is that increasing Na + permeability causes more depolarization, resulting in the opening of more Na + channels and further depolarization of the membrane potential.
Membrane permeability to water and solute has been shown to depend on temperature, the osmotic pressure of the medium, the type of solute present, the degree of cell hydration, and the presence or absence of ice.
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Fill in the blank. Giraffe necks and mice necks have the same number of vertebrae, despite their different sizes and functions. This is an example of a(n) _______. The wings of insects, bats, and birds are structurally different but achieve similar functions. This is an example of a/an _______. The peppered moth provides an example of _______, as the predominant color of moths changed over time as pollution dictated which color was best camouflaged for protection from predators. Respond to the following based on your reading. Two species, a cactus and a Venus fly-trap, have a water intake system that's similar in function but not in structure. What type of structure is this? A scientist is trying to determine if two species are closely related or if they just have the same external features. What would you look for to make this determination? You go to school and discover that your friend got admitted to the hospital for a burst appendix. You want to learn if the appendix serves a function in our bodies. What would you need to research? A species of beetle in Africa looks really similar to a different species in South America. How would the environment influence species development? Why does Australia have so many genetically distinct organisms?
Answer:
homologous structure
analogous structure
natural selection
This is known as an analogous structure.
To make this determination, you need to think about if the features are the same in function or also in structure. Features that have a closely related structure and function are likely to be related.
To learn more about why your friend is in the hospital, you should research vestigial structures.
These two beetles aren't closely related, but they look and behave similarly. This is because they live in the same environmental conditions and likely share a common ancestor that lived in Gondwana (the supercontinent that included the southern continents before they split apart through plate tectonics).
Australia has so many genetically distinct organisms because it has been separated from other bodies of land by water for a very long time. This has created an opportunity for long-term independence of other geographic areas.
Explanation:
Penn Foster
Answer:
1. homologous structure
2. analogous structure
3. natural selection
4. This is known as an analogous structure.
5. To make this determination, you need to think about if the features are the same in function or also in structure. Features that have a closely related structure and function are likely to be related.
6. To learn more about why your friend is in the hospital, you should research vestigial structures.
7. These two beetles aren't closely related, but they look and behave similarly. This is because they live in the same environmental conditions and likely share a common ancestor that lived in Gondwana (the supercontinent that included the southern continents before they split apart through plate tectonics).
8. Australia has so many genetically distinct organisms because it has been separated from other bodies of land by water for a very long time. This has created an opportunity for long-term independence of other geographic areas.
Example of how organisms that were previously thought of as related are actually more genetically related to organisms outside their species?
Answer:
Explanation:
Examples includes the relationships between chimpanzees, gorillas and humans. It is actually believed that the chimpanzees are more closely related to humans. About 99% of ther genome is thought similar to humans while for the gorillas about 98%.
But then, it is thought that chimpanzees and gorillas should be closely related to each other than to humans, but comparison of their genomes has shown that across 15% of the gorillas genome, they share a closer relationship with humans than with chimpanzees.
Which claim is supported by significant scientific research?
A. In the last 10 years, sea level has risen twice as fast as in previous
centuries.
B. There is no reason to believe humans are causing recent global
warming
c. In the last 10 years, Earth has been cooling off.
D. Weather anomalies can be used as evidence for and against
climate change.
Answer:
A
Explanation:
Would all of the reptiles in an area be considered a population? Explain.
All the reptiles which are living in an area can be considered as a population technically. Thus, the reptiles can be a population.
What is a Population?A population is any kind of complete group with at least one characteristic in common between different species. Populations are not just people or organisms. But, the populations may consist of, however are not limited to, people, animals, businesses, buildings, motor vehicles, farms, objects, or events.
Population data contains various types of influential details such as birth, death, demographic information such as the age, sex, annual income, occupation, language of the species in an ecosystem. The overall socio-economic, economic, political, cultural progress of a country is dependent upon the population data to a large extent.
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The force of the Earth's gravity on an object gives the object its __________.
volume
mass
weight
density
Answer:
weight
Explanation:
The gravitational force between a mass and the Earth is the object's weight.
Answer:
Weight
Explanation:
Whe weight of an object is the force of gravity on the object and may be defined as a mass times the acceleration of gravity,w=mg.Since the weight is a force,its SI unit is the newton.
Which substance cannot be separated by physical means or chemical means?
A: Mixture
B: Compound
C: Solution
D: Element
Answer:
I think its D
Explanation:
..........
Answer:
D: Element
Is the answer...
Physical characteristics include 3 pairs of legs and 3 body sections *
arachnids
insects
annelids
echinoderms
Answer:
The three main features of an arthropod's body are the _ or cuticle made of chitin; a series of paired, jointed _ , and segmented _ parts. A long organic molecule made of sugars, arranged in layers. Chitin.
Explanation:
Answer:
Which of the following equations are balanced correctly?
2Ag2O → 4Ag + O2
Zn + HCl → ZnCl2 + H2
Cu + H2O → CuO + H2
2C4H10 + 13O2 → 8CO2 + 10H2O
Explanation:
Which of the following is an autotroph in the food web below?
How do animals respond to stimuli?
Please help this is my last assignment for the year
List the order in which Consumers arrive to your new ecosystem
Deserts are only found near the equator.
Please select the best answer from the choices provided
T
F
Answer:
False
Explanation:
Answer:
False
Explanation:
Many deserts are not located around the equator with the most common example of this being the Gobi desert. Some books even contain the information that the Arctic and the Antarctic are deserts as well and they are located on the poles.
help me please
help help help
Answer:
I am pretty sure they use a fuel source, since they are connected to a electric grid that uses coal and other fuel.
How do the activities of squirrels affect oak trees?
A.
They cause the trees to produce acorns during the winter.
B.
They make it more difficult for the tree to reproduce.
C.
By removing acorns, their behavior causes harm to the trees
D.
They help the trees reproduce more successfully
Answer:
I want to say it is
They help the trees reproduce more successfully
Explanation:
this is because the others do not make sence
during a lunar eclipse, what occurs?
Answer:
the sun gets behind the moon
Explanation:
Answer:
the moon moves into the earth's shadow, so no sunlight reaches the moon. This only happens when the sun, earth and the moon are in line with each other.
quick i have 6 MINUTES!!!!!!!!!!!!!
Answer:
6.D and 7.A
Explanation:
Joey eats strawberries for lunch. Explain how homeostasis is maintained in the endocrine systems once the fruit has entered Joey’s body.
Answer:
Explanations:
Homeostasis can be defined as the phenomenon whereby there is balance or stability within the internal and external environment of a cell or the body. The internal environment of the organism is kept constant during homeostasis. During this process there is adjustments in the
internal environment Because there is always change in the conditions inside and outside the cell. When the system of the body is able to adjust itself it's reffered to as homeostatic regulation.
The endocrine system which contains glands that is responsible for the secretion of hormones into the bloodstream play also vital part during Homeostasis, This is because hormones which are the chemical messaged effect some change cells in another part of the body. The endocrine system is responsible for the regulations of
metabolism as well as the development of some body cells and systems via feedback mechanisms, hormones such as
Thyrotropin-Releasing Hormone during Homeostasis. Therefore as Joey eats strawberries for lunch the hormones makes adjustment of muscle metabolism and also regulate fluid and ion concentration in the system or body
Select the correct answer.
What term describes a species whose removal would affect many other species, both directly and indirectly
A. predator species
B. Keystone species
OC. cascading species
OD. phoresy species
Next
Answer:
Keystone species
Explanation:
Keystone species is that species whose presence and number in the ecosystem plays an important role in balancing the ecosystem and without them, the other species would be affected directly and indirectly.
A dominant predator is considered to be a keystone species because the removal of that predator allow their prey to explode in numbers which will decrease the overall biodiversity of the area. Prairie dogs, otters, bison are the examples of keystone species. So the correct answer is B. Key stone species.
How does the experiment contribute to our understanding of altruism in different creatures?
Answer:
TWO YEARS AGO, a group of Ugandan chimps provided a blow to the idea that humans are the only animals that truly behave selflessly to one another. These chimps showed clear signs of true selflessness, helping both human handlers and other unrelated chimps with no desire for reward.
The question of why we help each other, instead of looking out for ourselves, is one of the most compelling in modern biology. Evolutionary and game theory alike predict that selfish behaviour should be the rule with altruism the exception, and animal experiments have largely supported this idea. Nature, ‘red in tooth and claw’, is painted as a fierce competition between selfish individuals and their even more selfish genes. In this stark landscape, true altruism is apparently a rare quality and some scientists believe that it’s one
Explanation:
Answer:
TWO YEARS AGO, a group of Ugandan chimps provided a blow to the idea that humans are the only animals that truly behave selflessly to one another. These chimps showed clear signs of true selflessness, helping both human handlers and other unrelated chimps with no desire for reward.
The question of why we help each other, instead of looking out for ourselves, is one of the most compelling in modern biology. Evolutionary and game theory alike predict that selfish behaviour should be the rule with altruism the exception, and animal experiments have largely supported this idea. Nature, ‘red in tooth and claw’, is painted as a fierce competition between selfish individuals and their even more selfish genes. In this stark landscape, true altruism is apparently a rare quality and some scientists believe that it’s one
Explanation:
18. The Environmental Defense Fund, The Friends of the Earth, and The Natural Defense Council, (1 point)
are all divisions of The Environmental Protection Agency.
True
False
*PLEASE HELP*
An ecosystem that has almost the same number and type of organisms for many years is exhibiting ___
Answer:
equilibrium
Explanation:
How does the amount of rainfall affect the amount and types of seeds present on the Galapagos Islands?
The difference between a habitat and a niche is that a niche is
A. The specific functional role of an organism
B. The organism's preferred habitat
C. The kind of place an organism occupies.
Answer:
A. The specific functional role of an organism
Explanation:
A habitat is the general place where an organism lives and a niche is the range of physical and biological conditions in which a species lives and the way the species obtain what it needs to survive and reproduce.
You create a punnett square to determine the probability of hair color being passed to
offspring. Brown hair is dominant. Blond hair is recessive. Both parents have brown hair.
Both parents are heterozygous. What is the probability that the offspring will also have
brown hair?
ofteprings Brown hair to de
Answer:
75%, or 3/4's
Explanation:
Parent's genotypes are Bb because they are homozygous & brown hair is dominant. Cross this, and you get the genotypes of the offspring: BB, Bb, Bb, and bb. The proability that offspring will also have brown hair is 3 out of these 4 genotypes, so 75%.
appendix: doesn't really do.............for us but it does for other organisms
Answer:
Hey!
The blank space you've left open is meant to be filled with the word ANYTHING...
Explanation:
It has a history of acknowledging its little purpose and significance...but only really comes into focus when it is infected...called APPENDICITIS...
HOPE THIS HELPS!!
ItsMATT15Which level of organization is shown in the image?
a
cell
b
organ system
С
tissue
D
organ
Answer:
where is the picture? I can try and help
58:22
Which best explains why earthquakes sometimes occur in the same locations as mid-ocean ridges and rift valleys?
Plates bump as they slip past each other at convergent boundaries.
Plates get stuck as they move past each other at convergent boundaries.
Crust gets cracked and forms faults as plates collide along divergent plate boundaries.
Faults form because crust gets cracked when plates move apart along divergent plate boundaries.
sy
Answer:
The correct option is D: Faults form because crust gets cracked when plates move apart along divergent plate boundaries.
Explanation:
Options A and B are incorrect because even though tectonic plates are constantly moving and crashing against each other at convergent plate boundaries, it is not responsible for causing an earthquake. Option C is also incorrect in the context of the question statement merely colliding does not result in an earthquake.
Hope that answers the question, have a great day!
(also, please remember to give 'brainliest' if you found this answer helpful :)
Answer:
Faults form because crust gets cracked when plates move apart along divergent plate boundaries.
Explanation:
Due to the movement of the plates in two different directions, the crust gets cracked and this leads to the formation of divergent boundaries that pulls the two sides apart, and as a result, the earthquakes are created and some of them may occur in the same location. Rift valleys are also formed by this process.
A substance valued or required by any organism(s) for survival is defined as a ____
Answer: resource
Explanation:
A substance valued or required by any living organism(s) for survival is defined as a resource.
What is living organism ?The environment consist of both living and nonliving organisms with two interacting components such as Physical or abiotic and biological or biotic components.
The physical component are temperature, light, soil, air, and water where as the biological component are animals, plants, and microorganisms.
The biotic components are plants, animals, and micro-organisms while green leaves of the autotrophic plant have chlorophyll and this pigment help in making food using light, water, and carbon dioxide by the process of photosynthesis.
Animals on the other hand are heterotrophs need nutrients and absorb nutrients such as nitrogen, phosphorus, and calcium from the soil.
Decomposer and Scavengers feed on the dead bodies and decaying substances, animal release the nutrients trapped inside them.
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What is the function of flowers?
Transport nutrients
Gas exchange
Reproduction
Support stem
Answer:
The function is reproduction.
During mitosis, the original cell produces two daughter cells. How many daughter cells will be produced if 250 mouse cells undergo mitosis?
Answer:
There would be 500 daughter cells if 200 mouse cells went through the process of mitosis. (If that's what your asking)
Explanation:
During mitosis, the organism (which would be an asexual producer) doubles the amount of chromosomes and they divides the doubled number by two. So the organism will always end up with two daughter cells with the same number of chromosomes as itself. (That is the way with asexual producer's-their offspring is always an exact replica of the first). Now, if you take one mouse, it would end up with 2 daughter cells. If 250 mice reproduce, each with two daughter cells, then there would be 500 daughter cells in total, because you would multiply 2 by 250.
The number of daughter cells that will be produced is; 500 daughter cells
Mitosis is a process of cell replacement or cell growth whereby a cell divides into two exact daughter cells containing the same number of chromosomes each as the number of chromosomes contained in the parent cell.
Given that the original cell produces two daughter cells, when 250 mouse cell undergoes this process we will have
250 * 2 = 500 daughter cells.
Hence we can conclude that the number of daughter cells that will be produced is 500 daughter cells
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Sleet is precipitation made of small particles of ice. How does sleet form?
Answer:
Sleet is pellets of ice that form when snow falls into a warm layer and melts into rain. The rain then falls into a freezing layer of air that is deep enough to refreeze the raindrops into pellets. Sometimes the snow does not completely melt and the partially melted snowflakes refreeze into snow pellets.:
hope this helps!
Answer:
There must be a layer of air near the ground whose temperature is below freezing, where water turns to ice. Above this layer of freezing air must be a layer of warmer air. As snow falls through the warm air, it melts or partially melts into raindrops. It forms sleet before it reaches the ground.
Explanation:
:3
