up, are then matched with their partner ar
chromosomes). Once all the chromosom
chromosome can be found and the exac
Pre-Lab Questions:
1. What is nondisjunction?
2. What is karyotyping?
3. How many chromosomes does an indi
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Question 1 of 17 Pag
Question 1
Different substances have different properties that can be used to identify them. There are three test tubes X, Y, and Z filled with gas.
Can the properties of the gas in each test tube be used to tell whether the gases are the same or different?
What do you think might happen when a gas is exposed to a small flame? List as many possible results as you can think of
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The properties of the gas in each test tube can be used to tell whether the gases are the same or different, because depending on the substance, chemical reactions will occur.
What do you think might happen when a gas is exposed to a small flame?This happens in the flame test, which is based on the fact that when a certain amount of energy is supplied to a certain chemical element (in the case of a flame, energy in the form of heat), some electrons in the last valence shell absorb this energy.
Moving to a higher energy level, producing what we call an excited state. When one of these excited electrons returns to the ground state, it releases the energy previously received in the form of radiation.
With this information, we can conclude that the properties of the gas in each test tube can be used to know if the gases are the same or different, because depending on the substance, chemical reactions will occur.
Learn more about gases in brainly.com/question/1369730
If a person were having trouble balancing while walking, which cranial nerve should be tested for damage
Answer:
vestibulocochlear nerve
Explanation:
The Vestibulocochlear nerve( V||| cranial nerve) should be tested in a person who is having trouble balancing while walking.
What is Vestibulocochlear nerve?The Vestibulocochlear nerve has two components within a single trunk: the vestibular nerve, which innervates the semicircular canals of the inner ear and is involved with equilibrium, coordination, and orientation in space, and the cochlear nerve, which innervates the cochlea and subserves hearing.
Dysfunction of the vestibular system results invertigo, the sensation of environmental motion. On examination, patients with vestibular nerve dysfunction typically have nystagmus, in which the fast component is directed away from the affected nerve. With their arms outstretched and eyes closed, their limbs tend to drift toward the injured side.
Functions of vestibulocochlear nerve:
The primary function of the vestibulocochlear nerves (VIII) is a special sensory, but of two types.The vestibular nerve handles balance and equilibrium, while the cochlear nerve is responsible for hearing.To learn more about Vestibulocochlear nerve,refer:
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what is one benefit to giant octopuses laying many eggs?
Answer:
The majority of baby octopuses born don't reach adult hood, laying more eggs increases the number of babies that have a chance to make it to adulthood.
Answer:
During courtship, both octopuses use their sense of sight to determine attraction. Males are looking for a large female. Larger diploid females produce more haploid eggs, by meiosis If more eggs are fertilized, it gives the male a greater probability to pass on his genes.
Explanation:
just allows males to pass on more of their traits
Which of the following is true?
O Rivers account for most of the earth's surface water
O Earth's water = 60% Ocean and 40% Freshwater
O Glaciers and Icecaps account for most of the freshwater on earth
O Most of the earth's freshwater is groundwater like rivers and lake
Answer:
C. Glaciers and Icecaps account for most of the freshwater on earth
Explanation:
Glaciers and icecaps make about 68.7% of the freshwater we have here on earth.
I hope it helps! Have a great day!
Sandra~
Answer:
C.
Explanation:
Glaciers and icecaps make about 68.7% of the freshwater we have here on earth, so that would make the answer C.
I hope it helps! Have a great day!
bren~
how do pinnate leaves adapt themselves for photosynthesis in their habitat
Telomere shortening puts a limit on the number of times a cell can divide. Research has shown that telomerase can extend the life span of cultured human cells. How might adding telomerase affect cellular aging?.
Telomerase is an enzyme that longs telomeres, which are fundamental repeats at the ends of chromosomes whose length is associated with cellular aging.
What are telomeres?Telomeres are specific long tandem repeats located at the ends of all chromosomes in the cells.
These repeats (telomeres) are fundamental during cell growth and cellular aging.
It has been shown that telomerase can avoid the shortness of telomeres and thus can be used to slow cellular aging.
Learn more about telomeres here:
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whats produced by the prosses of meiosis
Answer: gametes
Explanation: During meiosis one cell divides twice to form four daughter cells. These four daughter cells only have half the number of chromosomes of the parent cell – they are haploid. Meiosis produces our cells or gametes (eggs in females and sperm in males)
16. Why should the recessive phenotype be used first to determine the q squared value instead of the dominant phenotype to determine the p squared value?
The recessive phenotype is used first to determine the q squared value because it is only expressed when h0m0zygous.
What is a recessive phenotype?A recessive phenotype is a phenotype which expresses the recessive trait of a gene.
The recessive phenotype is always h0m0zygous for that triat to be expressed.
In the Hardy-Weinberg equilibrium equation, the allele and phenotype frequencies are given as follows:
p^2 + 2pq + q^2 = 1where;
p^2 is the h0m0zygous dominant phenotype frequency2pq is the heterozygous phenotype frequencyq^2 is the h0m0zygous recessive phenotype frequencyTherefore, the recessive phenotype is used first to determine the q squared value because it is only expressed when h0m0zygous.
Learn more about recessive phenotype at: https://brainly.com/question/22117
Air pressure is lowest in the lungs during which of the following points during inspiration or expiration? (2 points)
A) End of inspiration, when lung volume is lowest
B) End of inspiration, when lung volume is highest
C) End of expiration, when lung volume is lowest
D) End of expiration, when lung volume is highest
Answer:
a) end of inspiration when lung volume is lowest
Explanation:
How did green algae come about
Answer:
Green algae grow at the edges of a glacial lake in Wales. Hundreds of millions of years ago, similar algae adapted to survive temporarily outside of the water may have kicked off the evolution of green land plants.
Algae didn't always hang out in the seas, but one fateful day, about a billion years ago, a simple bacterial cell swallowed a cyanobacteria cell, writes Ed Yong at The Atlantic. This chance occurrence allowed the bacteria to produce energy from the sun, a process known as photosynthesis.
Explanation:
The breakdown of pollutants. water purification, and soil formation are valuable services provided by:
A. earthquakes
B. the tides
C. ecosystems
D. global warming
I belive the answer is c
Explanation:
D, A ,and B have nithing to do with it
what statement about the cell membrane is true?
The complement cascade and its by-products contribute to:.
The complement cascade and its by-products contribute to
Both triggering inflammation and attracting phagocytes to sites of infection
Explain what biodiversity is and give three reasons why it is important write one additional sentence about what is happening to our planets biodiversity and why this is a concern
Answer:
I am only able to help with part of the question, but here it is:
Biodiversity: the variety of life in the world or in a particular habitat or ecosystem
I hope that this can help to get you started!
2. Summarize the trends you see in each population from each generation. a. Dark bears— b. Light bears—
The black bear has a tendency to proliferate, whereas the polar bear has a tendency to undergo faster extinction because they live in the arctic.
Dark bearsThe black bear (Ursus americanus), also known as the baribal, is a North American bear, found from Alaska to northern Mexico. It reaches 2.20 m in length, 1.10 m in height at the withers and 360 kg in weight.
Light bearsThe polar bear (Ursus maritimus) is a solitary mammal that lives in the icy waters of the Arctic Circle region. It is the largest species of bear that lives in places with low temperatures, being much feared by other animals that inhabit the place.
Considered the largest terrestrial carnivore and main symbol of arctic resistance, the polar bear has been suffering from climate change.
Whit this information, we can conclude that the black bear has a tendency to proliferate, whereas the polar bear has a tendency to undergo faster extinction because they live in the arctic.
Learn more about polar bear in brainly.com/question/22867881
After a culture of cells is allowed to multiply and is viewed through a microscope, the cells are x-rayed with high-energy radiation for less than 1/100th of a second. After the radiation, many newly reproduced cells appear different. What has probably occurred?.
After an exposure of the cells to high-energy radiation many newly reproduced cells appear different due to mutation.
What is mutation?Mutation occurs in cells when the change or damage of deoxyribonucleic acid in the cell brings about alterations in the genetic makeup of the organism.
Mutation of genetic material is caused by environmental factors called mutagens.
Examples of mutagens include:
radiation, chemicals, andinfectious agents.X-ray is an example of electromagnetic wave that possess high-energy radiation.
Therefore, after an exposure of the cells to high-energy radiation many newly reproduced cells appear different due to mutation.
Learn more about radiation here:
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The small intestine coudn't work without the _________ because fats coudn't be broken down.
Answer:
bile from the gallbladder
Image attached
20 POINTS
Which one is false???
Polymers are made up of which of the following?
Atoms
Electricity
Threads
Pigments
Answer:
Your answer is A.) Atoms.
Explanation:
Hope this helps you!
Answer:
Threads
Any fabric you take from earth's surface they are made up threads.Polymers are also one kind of fabric .So they also contain threadsOption C
Explain the difference between rotating and revolving. Then, describe the rotation and revolution/orbit of Earth.
Answer in at least four complete sentences. (o-o¬)
Be sure to check your grammar and spelling.
You can use the sentence starters and hints below to help you answer the questions:
When the Earth rotates, it is ________________________________.
When the Earth completes one revolution, it is __________________________.
*Hints for your last two sentences: Think about the shape of Earth's orbit, how long one rotation and one revolution take, etc.
Answer:
Rotation is the spinning of an object in one place. Revolution is the circling of an object in a given orbit (path).
Explanation:
When the earth rotates, it spins on its own axis which is tilted at 23.5 degrees. Thus, we can conclude that the earth rotates on its axis every 24 hours relative to the Sun.
When the Earth completes one revolution around the sun in a fixed orbit in 365.25 days. This means the earth takes approximately 365 days to completely encircle around the sun and return back to its original position.
(The extra .25 day is added every year to make up one full day. Hence, we see a leap year every 4 years).
darwin observed that organisms that were best able to survive and reproduce had adaptations that were...
A. suited to their environment.
B. ill suited to their environment.
C. incompatible with their surroundings.
D.nonexistent throughout the species.
Answer:
A: Suited for their environment
Explanation:
You can automatically eliminate B and C, since they both say that animals with adaptations that won't work with their environment would have a higher survival rate. This doesn't make sense; adaptations that wouldn't suit an environment would actually lower the population's chances of reproduction and survival.
That leads us to A and D. However, A would be the correct answer. Organisms with adaptations that suited their environment would help them (since it would make the organism more compatible with their environment), rather than having no change at all.
Hope this helped!
Answer: A. suited to their environment.
Explanation:
Why do anole lizards represent an excellent proxy for studying evolution?.
Anole Lizards represent an excellent proxy for studyimg evolution because : Anole lizards are examples of convergent evolution
What is a Convergent evolution ?A convergent evolution is a type of evolution where different living things acquire the same type of adaptations independently for the same kind of challenges in that occur in similar ecological niches. Anole lizards are examples of convergent evolution.
Hence we can conclude that Anole Lizards represent an excellent proxy for studyimg evolution because Anole lizards are examples of convergent evolution.
Learn more about Anole Lizards : https://brainly.com/question/11351054
Marc and his brother take turns mopping the flies in their fathers pizzeria each night. Which force becomes weakened when the floor is wet?
A. Air resistance
B. Friction
C. Magnetism
D. Gravity
Answer:
friction
Explanation:
think about a carpet flooring
What does being in hardy-weinberg equilibrium mean for a population?.
The Hardy-Weinberg equilibrium is a principle stating that the genetic variation in a population will remain constant from one generation to the next in the absence of disturbing factors.
Energy pyramids show the most available energy at the base and the least amount of energy at the top. What accounts for the difference in the energy levels in these two parts of the energy pyramid?
choices:
A. Some of the energy is destroyed
B. The energy is used by decomposers
C. The energy is continually recycled in the biosphere
D. With each succeeding level, most of the energy is used by the organisms for life processes and some of the energy is "lost" as heat
Answer:
D
Explanation:
the energy from the sun is gradually lost after each level increase because the organism before being eaten uses the energy to stay alive such as staying warm or running from predators
What is the main reason that it takes 2 to 3 minutes for the reaction to occur between sucrose and sulfuric acid in the dehydration of sucrose? the activation energy needs to be overcome in the reaction. the activation energy must be removed from the intermediates. the sulfuric acid has to be consumed before the reaction takes place. the sucrose molecules must rearrange to become the catalyst.
The main reason for this activity is the activation energy needs to be overcome in the reaction.
What do you mean by Dehydration?Dehydration may be defined as a process where there is a removal or loss of water takes place from something.
When the reaction between sucrose and and sulfuric acid is carried, it may leads to dehydration of sucrose. As a result of this, activation energy requires to come up in the reaction.
Therefore, the main reason for this activity is the activation energy needs to be overcome in the reaction.
To learn more about the activation energy, refer to the link:
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Answer:
A. the activation energy needs to be overcome in the reaction
Explanation:
Which sphere is the atmosphere interacting with when winds are produced over oceans?.
Answer:
The hydrosphere
Explanation:
The atmosphere interacts with the hydrosphere to redistribute water over the surface of Earth.
Select the correct answer from each drop-down menu. the dna of humans and mice is almost 92% similar. this similarity indicates that . mice have a tail, while humans have a tailbone. the tailbone is a structure in humans.
The DNA of humans and mice is almost 92% similar. This similarity indicates that mice share a common ancestor with humans. Mice have a tail, while humans have a tailbone.
Why do humans share DNA with mice?Humans and mice don't look alike, but both species are mammals and are biologically very similar. Almost all of the genes in mice share functions with the genes in humans.
That means we develop in the same way from egg and sperm, and have the same kinds of organs.
Thus, Mice have a tail, while humans have a tailbone is correct.
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What are one advantages and disadvantages of RENEWABLE resources?Use these sentence starters to help you:
One advantage of renewable resources is ____________.
One disadvantage of renewable resources is _____________.
Answer:
One advantage of renewable resources is that it won't run out.
One disadvantage of renewable resources is that it has limited storage capabilities
