Aristarchus’s model not accepted because at that time it was believed that the earth was at the center of the universe.
What is Aristarchus’s model?Aristarchus make a model by placing the place of the Sun in the middle of the solar system and placed the planets around the Sun.
So we can conclude that Aristarchus’s model not accepted because of the believed that the earth was at the center of the universe.
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The Answer is
B - Aristarchus was not as famous as Aristotle.
D - Aristarchus could not answer some important questions about the model.
List the ways eukaryotic cells can modify the original mrna transcript.
Answer:
The pre-mRNA has to go through some modifications to become a mature mRNA molecule that can leave the nucleus and be translated.
Explanation:
Eukaryotic pre-mRNAs are modified with a 5' methylguanosine cap and a poly-A tail. These structures protect the mature mRNA from degradation and help export it from the nucleus. These include splicing, capping, and addition of a poly-A tail, all of which can potentially be regulated – sped up, slowed down, or altered to result in a different product.
I hope this helps. :).
Please help me!
What is the definition of Principle of Common Descent?
A, B, Or C?
A. Similar patterns of embryological development provide further evidence that organisms have descended from a common ancestor
B. All species - living and extinct - are descended from ancient common ancestors
C. At the molecular level, the universal genetic code and homologous molecules provide evidence of common descent
Answer:
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is salmon and shark have the same gas exchange?
Answer:
yes
Explanation:
because oxygen and carbon dioxide is formed into water by the gills
10.
Which of these body systems is involved in coordinating and controlling body movements and responses?
endocrine
nervous
the question is in the picture
i'll brainliest immediately who can answer it properly
you may take your time. thank you.
Answer:
The importance of plant genetic diversity (PGD) is now being recognized as a specific area since exploding population with urbanization and decreasing cultivable lands are the critical factors contributing to food insecurity in developing world. Agricultural scientists realized that PGD can be captured and stored in the form of plant genetic resources (PGR) such as gene bank, DNA library, and so forth, in the biorepository which preserve genetic material for long period. However, conserved PGR must be utilized for crop improvement in order to meet future global challenges in relation to food and nutritional security. This paper comprehensively reviews four important areas; (i) the significance of plant genetic diversity (PGD) and PGR especially on agriculturally important crops (mostly field crops); (ii) risk associated with narrowing the genetic base of current commercial cultivars and climate change; (iii) analysis of existing PGD analytical methods in pregenomic and genomic era; and (iv) modern tools available for PGD analysis in postgenomic era. This discussion benefits the plant scientist community in order to use the new methods and technology for better and rapid assessment, for utilization of germplasm from gene banks to their applied breeding programs. With the advent of new biotechnological techniques, this process of genetic manipulation is now being accelerated and carried out with more precision (neglecting environmental effects) and fast-track manner than the classical breeding techniques. It is also to note that gene banks look into several issues in order to improve levels of germplasm distribution and its utilization, duplication of plant identity, and access to database, for prebreeding activities. Since plant breeding research and cultivar development are integral components of improving food production, therefore, availability of and access to diverse genetic sources will ensure that the global food production network becomes more sustainable. The pros and cons of the basic and advanced statistical tools available for measuring genetic diversity are briefly discussed and their source links (mostly) were provided to get easy access; thus, it improves the understanding of tools and its practical applicability to the researchers.
All adaptations are physical. A. True B. False
Answer:
False
Explanation:
Adaptations are any behavioral or physical characteristics of an animal that help it to survive in its environment.
Answer:
False
Explanation:
An adaption can be both physical and behavioral. For example, villi have microvilli as an adaption which is physical but your behave is adapted to act in some common way in a situation which is also common
The fluidity of the plasma membrane is primarily provided by the ______.
Answer:
The fluidity of the plasma membrane is primarily provided by the Phospholipids
b. Layers of rock are moved by forces beneath Earth's surface.
c. Most geological processes operate extremely slowly.
d. The processes that changed Earth in the past are different from the processes that
operate in the present.
3. Circle the letter of each sentence that is true about Lyell's work.
a. His book, Principles of Geology, was published after Darwin returped from his voyage.
b. His work explained how awesome geological features could be built up or torn down
over long periods of time.
Answer:hey reasoned that all rocks that were laid down in layers in large part were laid down under or by water or action by a fluid. They later discovered that both water and wind laid down the materials that later became lithified to become rocks.When these rocks were deposited as sediments, this area was most likely (1) under the ocean (2) a desert between high mountains (3) repeatedly covered by lava flows (4) glaciated several times Both organisms that formed the fossils found in rock layers 3 and 4 (1) lived during the same period of geologic time (2) lived in polar regions
Is it mitosis or meiosis when it makes cells with 23 chromosomes in humans?
what depolarizes producing the P wave, which generates a wave of contraction
Answer: The P wave indicates atrial depolarization. The P wave occurs when the sinus node, also known as the sinoatrial node, creates an action potential that depolarizes the atria. The P wave should be upright in lead II if the action potential is originating from the SA node.
Explanation:
plss help!!
In your own words, explain the goals of taxonomy. What scientific evidence is used to group organisms?
Answer:
explain the goals of taxonomy?
The main aim of taxonomy is to identify, characterise, classify and give specific names to all the living organisms according to their characteristics. Plants and animals are classified into different taxa, e.g. kingdom, phylum, class, order, family, genus and species.
What scientific evidence is used to group organisms?
Scientists use pieces of evidence such as the organism's morphological structure and evolutionary descent. The gathered evidence is illustrated using either a cladogram or a dichotomous key in order to classify and to identify the organisms.
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why are scientists unsatisfied with using one type of element to determine the age of a rock?
Answer:
Different elements have different half lives, which means that certain elements are only useful for determining the age of a rock up to a certain age. Carbon-14, for example, is great for dating archeological finds as old as 50,000 years. But that's the limit of its usefulness. I would not be useful for dating dinosaur bones. For that you would need an element with a much longer half life, such as Uranium-238, which has a half life of more than a million years.
What molecule do red blood cells more readily bind with if they are given a choice between it and O2?
Answer:
Hemoglobin is a protein found in red blood cells that is comprised of two alpha and two beta subunits that surround an iron-containing heme group. Oxygen readily binds this heme group.
An inheritable physical feature is a
Answer:
Physical trait.
Explanation:
Characteristics that are obserevable that a child inherits from there parents.
Ex: Freckles
FFA activity is mostly centered around:
religious centers.
libraries.
elementary schools.
high schools.
FFA helps the next generation of leaders. FFA helps to make a positive difference in the lives of students through potential development for premier leadership, personal growth, and success in career through agricultural education. It is mostly centered around elementary schools.
What is FFA?FFA refers to the Future Farmers of America. It is actually a student organization for the people who are interested in agriculture and leadership.
It is one of the three components of education in agriculture.
It primarily focuses on the elementary schools to develop leaders among them.
Thus, the correct option is C.
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For 10 points, what’s the formula of riding a bike? lmk‼️‼️
Answer:
Inertia forces + gyroscopic forces + the effects of gravity and centrifugal forces = the leaning of the body
Plants produce hormones to help them regulate important processes, such as growth and response to the environment. Hormones produced in one part of the plant may affect cells in a different part of the plant. What type of tissue carries hormones through the body of a plant?
Vascular tissue
Reproductive tissue
Dermal tissue
Ground tissue
Answer:
vascular tissues
hope it helps :)
Answer:
vascular tissue
Explanation:
In plants, hormones travel large throughout the body via the vascular tissue (xylem and phloem) and cell-to-cell via plasmodesmata.
Hey can someone please help me with these questions. Im having a hard time with them.
Answer:
See below.
Explanation:
1. C. an increase in clean water sources.
If we think about this in terms of humans, our growing population, this should be the correct answer. Through the creation and usage of carbon emissions (ie. using gas to power cars and the smoke that comes out as exhaust in those cars) decreases are quality quickly. Additionally, this directly relates to an increase of global warming, as the contribution of greenhouse gases ups the temperature on earth. As wood and the materials with it are a large source of material for us, deforestation is common and happens all the time, so that in itself (along with all the other points stated) are direct contributions/ causes of our growing population.
Thus, the answer will be C.
2. B. Burning fossil fuels in power plants.
Dumping waste matter into ocean waters doesn't essentially rise the temperature of the earth, as is defined as global warming. It's bad, yes, but not a direct/ big contributor to it. Using pesticides on agricultural crops, too, doesn't necessarily affect global warming as much as the other options provided. Now, in clearing native forests with industrialization, that's where it gets tricky. We use machines and whatnot to do this, so you could say that this is a huge factor. However, this isn't the case, as global warming is most affected by the burning of fossil fuels (you know- "warming" and "burning" do kinda correlate for a reason here).
Thus, the answer is B.
3. C. the increased supply of resources.
Graph 2 starts to go up slightly before it skyrockets upward, slowly starting to level out afterward, yes? So, what'll be the cause of this. Obviously if there's something increasing this and the population, a decrease won't be the answer. Additionally, if we're assuming both graph start out with the same amount of resources, then the demand would still be high, right? So our answer cannot be D. Now we're left with options A and C. While A may seem like a correct answer, this scenario depends more on quantity as opposed to quality (it won't matter how good the resources are if you don't have enough of it), so this will leave our answer to then be C.
4. D. for about 3 months.
If we take a look at the graph and where the carrying capacity is finally reached, we'll see this moment in time is on August 1st. Now, if we've initially started documenting this rabbit population on May 1st, we'll understand that there is a three month gap between them, thus providing us with the answer of 3 months.
If this is still a bit confusing as to why it's not 4 months (which may not be a problem for you but it always was when I was younger), you can think of it as this:
May to June is 1 month. June to July is 2 months. July to August is 3 months.
5. F. more access to contraception
Now, a few of these you can cross out quickly. It won't be option B because that would indicate a high jump in growth rate, it won't be option C because that has no direct impact on anything in this scenario, it won't be option D because high education is available in many places (meaning that it wouldn't affect anything in a specifically more developed country), and it won't be option E because that would lead to an increase. Now we're left with options A and F- which one is it?
A higher cost of living would definitely deter people from having kids, but would it lead to a slower growth rate? Not necessarily. People still have kids in harsh times, so that's not necessarily what would be the leading cause. More access to contraception, however, would lead to a slower growth rate. If people have more access to the means of not stopping them from having kids, and then they choose to take this option, then this would be the correct answer.
A student noticed that he looks more like his mother's side of the family than his father's. he
explains, "it is because my cells have more dna from my mom than from my dad.
do you agree or disagree with this student?
Answer:
Yes
Explanation:
The mom has greater features than the dad's side so the child is going to have more of what the mom has. Like black hair is a dominant feature maybe the mom had black hair that dad had red black is the dominant trait.
I totally disagree with this student. This is because, during the successful fertilization, 23 chromosomes of each parent get fused in order to form a total of 46 chromosomes. The amount of DNA from both the parents is equally inherited by the students.
What is DNA?DNA may be defined as a type of molecule that is significantly found inside each cell that contains the genetic information responsible for the development and function of an organism. It stands for deoxyribonucleic acid.
The amount of DNA from both parents is equally inherited by the students. But the main thing behind this concept is that the child shares more similarities with his mother's side of the family due to DNA fingerprinting.
While this mechanism creates variation when it comes to the father's side. And hence it provokes more differentiation with respect to father.
Therefore, it is well described above.
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Protein X activates gene expression only in cells exposed to a specific signaling molecule. In a study,
researchers determined the intracellular location of Protein X in cultured cells both before and after exposing
the cells to the signaling molecule. The results of the study are shown in the diagram.
Based on the results, which of the following best describes what Protein X is?
A. Protein X is an RNA splicing enzyme.
B. Protein X is a cell membrane receptor protein.
C. Protein X is a transcription factor.
D Protein X is a hormone.
Before
Treatment
After
Treatment
Protein X
-z
Based on the results, which of the following best describes what Protein X is a transcription factor.
What are transcription factors?Transcription factors are proteins that contain at least two functional domains: one binding with DNA and the other binding with RNA polymerase. These proteins control when, where and how the genes will be transcribed, being the basis for the control of gene expression.
In this case the protein X is a transcription factor which means proteins that help turn specific genes "on" or "off" by connecting to nearby DNA. Transcription factors that are activators drive the transcription of a gene.
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What are Micro-Organisms
Answer:
A microorganism, or microbe,[a] is an organism of microscopic size, which may exist in its single-celled form or as a colony of cells.
Answer:
Those organism which cannot be seen under eyes and require microscope to be seen are called micro organism .
what is an animal cell??
List 3 body systems that both humans and fish have in common.
Answer:
The systems areRespiratory systemDigestive systemExcretory system.The 3 body systems that both humans and fish have in common are circulatory, respiratory and digestive system.
What is body system?When we breathe in air, our lungs pull oxygen from it and transmit it into our bloodstream while also producing carbon dioxide. The gills function similarly in the majority of fish, although not all.
Fish consume food through their mouths, then they digest it in their esophagus.
The pyloric caeca, which are finger-shaped pouches that process food in the stomach and secrete digestive enzymes and absorb nutrients, are found in many fish.
Cold-blooded aquatic vertebrates called fish can be found in both freshwater and saltwater.
Similar to humans, they have a closed circulatory system in which a network of blood arteries keeps the blood constantly contained.
Thus, these are the three body systems.
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PLEASE HELP
Which of these is a major cause affecting vertical movement of global deep ocean currants
A flow into the ocean
B Tidal ebb and flow
C The rise and fall of the ocean floor topography
D Movements of major animal populations
Answer: B.
Explanation:
Winds, water density, and tides all drive ocean currents. Coastal and sea floor features influence their location, direction, and speed. Earth's rotation results in the Coriolis effect which also influences ocean currents.
______occurs so plants can make _________to use for energy
Answer:
PhotosynthesisGlucoseHow does cytolysis occur via the complement pathway?.
Answer:
The complement proteins C3a and C5a lead to the release of histamines, resulting in inflammation and chemotaxis. How does cytolysis occur via the complement pathway? Disrupting cell wall of pathogens Stimulation of the inflammatory response Triggering the release of histamine Formation of the MAC in invading cells, killing them
Explanation:
The fact that all organisms have DNA as their genetic material is evidence that
-Natural Selection Occurred
-All organisms descended from a common ancestor
-Selective breeding takes place everyday
-Genetic resistance rarely occurs
The digestive system relies on the
system to deliver the nutrients to the entire
body of the organism.
Answer:
The digestive system relies on the circulatory system to deliver the nutrients to the entire body of the organism.
Explanation:
» Concepts
The function of the digestive system is to break down food into nutrients for your body to use as energy. However, once the food is broken down, the nutrients pass onto the bloodstream. Then, the circulatory system takes action and transports them throughout your body.
Water cyclewater cyclewater cyclewater cyclewater cyclewater cycle
which statement best describes a relationship between mitochondria and chloroplasts
