Explain how homologous structures are used as a source of evidence to infer evolutionary relationships between modern and fossil organisms
Answer:
Homologous structures provide evidence for common ancestry, while analogous structures show that similar selective pressures can produce similar adaptations.
Explanation:
Analogous structures demonstrate that identical selective pressures might result in similar adaptations, whereas homologous structures indicate evidence for shared ancestry.
What are analogous structures?In contrast to homologous structures, analogous structures are characteristics of different species that have evolved in response to a similar environmental challenge and are similar in function but not necessarily in structure.
While comparable structures demonstrate that similar selective pressures can result in similar adaptations, homologous structures suggest that they have a common ancestor (beneficial features).
Therefore, homologous structures provide evidence for common ancestry, while analogous structures show that similar selective pressures can produce similar adaptations.
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How would this impact the organism?
Answer:
how would what impact the organism?
Which of the following describes the changes that occur during the 3rd week of the menstruation cycle? A. The egg matures within the ovary. B. The egg travels through the fallopian tube to the uterus. C. The unfertilized egg is removed from the uterus. D. Egg travels from the ovary into the fallopian tube. Please select the best answer from the choices provided. A B C D.
The changes that occur during the 3rd week of the menstruation cycle is
the egg travels through the fallopian tube to the uterus.
Ovulation is the process that takes place during the 3rd week of
menstruation. The Luteinizing hormone (LH) stimulates the release of the
egg from the ovary and travels through the fallopian tube to the uterus.
At this stage, the individual has a higher chance of getting pregnant when
unprotected sex occurs.
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5. What enzyme makes it less likely that DNA will be lost from telomeres during replication?
Answer:
Telomearse
Explanation:
a particular peach tree produces peaches that are more resistant to disease than other peaches. what method would reproduce these exact peaches?
The best way to get the exact preach tree is through Asexual reproduction.
Asexual reproduction is the only method of reproduction in which the exact copies of genes in the parents are transferred to the offspring. If cross pollinations( Sexual reproduction') with the a peaches plants from a different parents plants takes place, genetic variation at meiosis will not permit the inheritance of the exact copies of genes for diseases resistance.
Therefore, it is ideal in this scenario to by pass crossing over and recombination at meiosis, in order get the exact copes of genes for disease resistance through mitosis in the offspring, asexual preproduction is used.
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The method that would produce peaches of exactly the same characteristics would be cloning or vegetative propagation.
Cloning the peaches that are more resistant to disease will result in the production of peaches with exactly the same morphological and genetic attributes.
The same result would be obtained by propagating the desired peaches asexually using relevant means.
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what are 3 structures(organelles) that plant cells that animal cells do not?
what bonds in an atp molecule store the chemical energy used by cells?
Answer:
quais ligações em uma molécula atp armazenam a energia química usada pelas células?
Explanation:
espero ter ajudado boa noite
Why are zebra mussels able to spread so quickly in the United States?
a. They are weaker competitors than the local mussels.
b. They grow logistically.
C. They are more zebra mussels than there are resources.
d. There are no natural predators of the zebra mussel in the U.S.
The abundance of sodium leak channels in skeletal muscle is ______ the abundance of sodium leak channels in a typical neuron.
The abundance of sodium channels in muscles is as important as the abundance of sodium leak channels in a typical neuron.
Sodium plays an essential role in the body, this includes important functions such as:
Intervening in the process of muscular contraction.Intervening in the process of interneural communication.This is possible through sodium channels in cells that allow sodium to enter or leave the cell at very specific times and this causes specific reactions in cells.
In neurons: Sodium channels are abundant and essential because due to the action of sodium signals are passed from one neuron to others.In muscles: Sodium channels are abundant and essential, especially in skeletal muscles. The role is sodium is to contract or relax muscles, which makes movement possible.Based on this, the presence of these channels in both neurons and skeletal muscles is equally important.
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In what layer of the atmosphere is weather occuring and the layer where we live?
Answer:
Atmosphere takes place in the stratosphere and we live in troposphere
Why is air temperature above land warmer than the air temperature above water in the same location during the summer?
Answer:
Sea breezes happen during the hot, summer days due t the unequal heating rate of land and water
Explanation:
Solar heating of the Earth’s surface is uneven because land heats faster than water, and this causes air to warm, expand and rise over land while it cools and sinks over the cooler water surfaces.
hope it is useful
exchange of gases in the human breathing system takes place in the?
alveoli
ExplanationDuring gas exchange oxygen moves from the lungs to the bloodstream. ... This happens in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.
The exchange of gases takes place in the alveoli.
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Additional information :- Alveoli are microscopic air sacs. They are the primary sites of exchange of gases. Gas exchange also occurs in lungs and tissues by diffusion.Atmospheric air contains little CO2, but blood flowing in pulmonary capillaries has a higher concentration of CO2.CO2 diffuses from higher concentration in blood across walls of alveolar capillaries to lower concentration in air in alveoli.Blood coming into pulmonary capillaries is oxygen poor and alveolar air is oxygen rich.Oxygen diffuses from higher concentration in alveoli across walls of alveolar capillaries to lower concentration in blood.▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
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Which spheres include the water cycle? (Select all that apply.)
hydrosphere
geosphere
biosphere
atmosphere
All of them include the water cycle
The electron transport process makes water and ATP and is sometimes called
because it requires oxygen.
Answer:
respiratory chain... hope that's right
Can somebody help me with my phycology
what is the main function of the mitochondria in a plant cell?
Answer:
Produce energy for the cell.
Explanation:
why,we have more mitochondrial in our tissue muscles? -sorry for bad eng
Answer:
This is because mitochondria produce ATP during aerobic respiration and ATP is needed for muscle to contract. ... Muscles cells contain more mitochondria because they have to release large amount of energy quickly for movement.
Explanation:
Hope it's help
Under which conditions would air hold less water vapor than it holds at 30°C
(86°F) with sunny skies?
A. 34°C (94°F) with cloudy skies
B. 30°C (86°F) with cloudy skies
C. 22°C (86°F) with sunny skies
D. 32°C (90°F) with sunny skies
Answer:
B
Explanation:
jus CS its right
The relative humidity of the air affects how much water vapor it can hold. 30°C (86°F) with cloudy skies would air hold less water vapor than it holds at 30°C (86°F) with sunny skies. So, the correct option is B.
What is Relative humidity?Relative humidity (RH) measures the amount of moisture in the air compared to the maximum amount of moisture in the air at a given temperature and pressure. It is a standard figure for describing the moisture content of the air and is expressed as a percentage.
At a given temperature and pressure, air is considered to have 100% relative humidity when it contains all the moisture it can hold. The temperature at which the moisture in the air begins to condense into droplets is known as the dew point.
Therefore, the correct option is B.
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A peacock spreading its tail to attract a mate is sending a(n) _____ stimulus. learned innate external internal
Answer:
External
Explanation:
The Tail is spreading outside of the peacock (Externally)
what process can lead to an individual having too many or two few chromosomes?
The process which can lead to an individual having too many or two few
chromosome is as a result of mutation which occurs during meiosis.
Meiosis is the type of cell division which occurs in reproduction and the
production of sex cells such as sperm and egg. This process results in the
production of four unique daughter cells.
The homologous chromosomes not being properly distributed in the
process could lead to such types of error.
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What's a recycling plant and how are electromagnets used there?
Answer:
A recycling plant is a factory for processing used or abandoned materials. The different types of recycling plants include those that process glass, metals, and paper back into raw materials. Other plants focus on items that require complicated recycling processes, such as concrete, electronic equipment and various plastics.
Electromagnets are used to lift and manoeuvre the crushed up ferrous materials or again to extract them from a pile of scrap. Ferrous materials are heavy and sharp but with the strength of the electromagnets they can be lifted and moved around with ease.
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The species that plays the biggest role in the habitat is?
Answer:
A keystone species is a species that plays an essential role in the structure, functioning or productivity of a habitat or ecosystem at a defined level (habitat, soil, seed dispersal, etc)
Answer:
the one that does the most damage, both to its habitat and the population of species around them.
Explanation:
Which three terms could be used to identify the carbon (c) in this chemical equation
Answer:
element product atom
Explanation:
Answer the following for 20 points ……….
Ten year old Matt Zigbowski struggles at school. His teacher seats students alphabetically, so he is at the back of the classroom. He cannot see the words on the chalkboard from his desk. When he goes to the teacher's desk near the chalkboard, he can see the words. What is probably wrong with his eyes?
a. hyperopia
b. myopia
c. astigmatism
d. astigmatism and myopia
e. astigmatism and hyperopia
Answer:
Ten year old Matt Zigbowski struggles at school. His teacher seats students alphabetically, so he is at the back of the classroom. He cannot see the words on the chalkboard from his desk. When he goes to the teacher's desk near the chalkboard, he can see the words. What is probably wrong with his eyes? D. ASTIGMATISM AND MYOPIA
Which nitrogenous base is NOT found in RNA?
1 Adenine
2 Cytosine
3 Guanine
4 Thymine
5 Uracil
Uracil is a nitrogenous base found in all RNA but not present in DNA. There are multiple unusual modified bases found in tRNAs not found in DNA as well: Dihydrouridine, Pseudouridine, 1-methyl adenosine, N2,N2-dimethylguanosine, inosine, and 1-methyl-inosine. There are other nitrogenous bases that are metabolic intermediates that are not found in nucleic acids such as inosine (also in tarna), hypoxanthine, xanthine, dihydroorotate, orotate, and the purine break down product uric acid.
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if a man with type ab blood marries a woman with type o blood, what blood types would you expect in their children
Answer: the child could be A or B blood type
Explain how the number of electrons in a energy level affects bond formation
Which type of bond, denoted by the arrows, allows DNA to be readily replicated?
Need for a final will mark brainliest!
Answer:
the answer would be hydrogen bonds as another chemical will come down the center of the double helix and break the hydrogen bonds allowing DNA synthase II to come along a replicate it.
A student is investigating the process of osmosis. She fills a medicine dropper with red
blood cells. Next, she creates a saline solution that is isotonic to the red blood cells.What will most likely happen to the red blood cells after they are placed in the
solution?
A. Water will exit the cells and cause them to shrink in size.
B. Water will enter the cells and cause them to grow in size.
C. Water will neither enter or exit the cells and their sizes will remain the same.
D. Water will enter and exit the cells at a steady rate and their sizes will remain
the same.
Answer: D. Water will enter and exit the cells at a steady rate and their sizes will remain the same.
Explanation:
Osmosis occurs when the salt content is NOT the same as our red blood cells: the salt or lack of it causes our RBCs to swell or shrink. Isotonic fluid has the same salt content as our RBCs. This is why it's important to watch salt intake in congestive heart failure.