Answer:
D.
Explanation:
The endosymbiotic theory.
State a hypothesis based on the following questions:
What type of rocks do you think are present in your area?
Is one rock more common than another?
Why do you think this is so?
What do you think the streak will look like in your rock samples?
Do you think the rocks will be hard or soft?
Do you think calcium carbonate is present?
The area in which I live in is the Tikvesh valley, Macedonia. The rock types that dominate in my area are of two types, shale and andesite. The dispersal of these two totally different types of rocks is pretty much the same, so there isn't one that would dominate over the other. The reason why these two types of rocks are dominant in the area is because the area was underwater until 20 million years ago, so once the big lakes dried out, there were large layers of sedimentary rocks behind it, thus the shale. On the other hand, until 2.5 million years ago there was a volcano in the southern part of the area. The volcano had andesitic magma, so around the area where it was located there's predominantly layers of andesite. The streak in the rock samples is very simple, as they have very monotonous structure, their layers are not distinguishable when cut through. The shale is a soft rock, and it can be broken very easily, even by hand. The easiest way to break it though is to hit it with sharp object horizontally. The andesite is very hard rock, as it is an igneous rock. It has a much more solid structure, so breaking it is very hard. The presence of calcium carbonate in the area is lacking.
Final answer:
Provide a hypothesis about the types of rocks in the area, based on factors like visible grains, fossils, local geology, streak color, hardness, and the presence of calcium carbonate.
Explanation:
Hypothesis:
The rocks in the area are likely sedimentary in nature due to the presence of visible grains and possible fossils. One type of rock may be more common than others depending on the local geology, such as limestone in a region with abundant marine deposits. This prevalence could be due to specific geological formations in the area.
The streak in the rock samples may vary depending on their mineral composition, with some exhibiting distinct streak colors. The hardness of the rocks could also differ, with factors like compaction and cementation affecting their hardness levels. The presence of calcium carbonate may be indicated by effervescence when exposed to dilute hydrochloric acid.
unsaturated and saturated lipids exhibit different characteristic based on their structures wich characteristic is unique to saturated fats
A:forms covalent, carbon-to-carbon bonds
B:is a liquid at room temperature
C:contains the maximum number of hydrogen atoms
Answer:
I believe the answer is C.
Explanation:
Hope my answer has helped you!
Which systems are affected when someone does not take their seasonal allergy medication?
Choose all answers that are correct.
A.
immune system
B.
circulatory system
C.
respiratory system
D.
muscular system
Answer:
It will effect your Respiratory system
Explanation:Because if you don't take it accordingly then the allergies will make it hard to breathe.
The rearrangement of genetic information so that offspring can inherit new genetic combinations is called
Answer: recombination
Explanation:
in treating skin cancer, the body responds to this treatment like what type of reaction ?
Answer:
headache,
common cold,
allergy,
upper respiratory infection,
muscle soreness,
sinus infection,
sun sensitivity
Explanation:
A new species is discovered and scientists are trying to classify it. One of the key features found is that the species is entirely dependent on other organisms for its food necessary to sustain life. What type of species is this?
Answer:
Parasitic
Explanation:
The species that is described is a parasitic species. The reason why it will fall into this category is that its key feature is that it is entirely dependent on other organisms for its food. This type of species are not able to produce food for themselves, nor are able to get it from the environment, which is way they have evolved in a manner to use the other organisms. They find a host organisms, attach to it, and then they are extracting the nutrients out of that organism, thus classical parasitism. The extraction of the nutrients can be so severe that the parasitic species can actually kill systemically its host.
Answer:
A. HeterotrophicExplanation:
Took thei test!
Both Darwin and Lamarck proposed mechanisms by which species might evolve. Although Darwin first published his ideas in the mid-1800s, most scientists continued to favor Lamarck's explanation until near the end of that century. What was the most likely cause of the eventual shift from Lamarck's hypothesis to that proposed by Darwin?
A new generation of scientists was more open to considering new ideas.
Lamarck's hypothesis did not take into consideration all that had been learned about genetics.
More evidence accumulated supporting Darwin's ideas than could be found to support Lamarck's.
It took several decades for Darwin's ideas to appear in textbooks and for scientists to learn about them.
Answer:
More evidence accumulated supporting Darwin's ideas than could be found to support Lamarck's.
Explanation:
The study of gradual change in species is called evolution. Evolution is a population phenomenon.
The correct answer is option C which is More evidence accumulated supporting Darwin's ideas than could be found to support Lamarck's.
What is genetics?The study of genes and inheritance is called genetics. There are different types of genes and one of them is recessive and the other is dominant.
According to the question, The darwin postulates are more suitable for Lamarck's statements.
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What atom is a noble gas in group 18, row 4?
Explanation:
Group 18 is also known as noble gases. Elements of this group are helium, neon, argon, krypton, xenon, and radon.
Period 1 means value of n = 1. Period 2 means value of n = 2. Period 3 means value of n = 3. Period 4 means value of n = 4 and so on, where n is valence shell.
Electronic configuration of helium is [tex]1s^{2}[/tex].
Electronic configuration of neon is [tex]1s^{2}2s^{2}2p^{6}[/tex].
Electronic configuration of argon is [tex]1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}[/tex].
Electronic configuration of krypton is [tex]1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{10}4s^{2}4p^{6}[/tex].
Electronic configuration of xenon is [tex]1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{10}4s^{2}4p^{6}4d^{10}5s^{2}5p^{6}[/tex].
Electronic configuration of radon is [tex]1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{10}4s^{2}4p^{6}4d^{10}5s^{2}5p^{6}4f^{14}5d^{10}6s^{2}6p^{6}[/tex].
Therefore, we can conclude that krypton is the atom which is a noble gas in group 18, row 4.
What are the functions of nerve cells
Answer: Simple background information is:
Neurons (also known as neurones, nerve cells and nerve fibers) are electrically excitable cells in the nervous system that function to process and transmit information.
Explanation:
Which means Neurons play a major role in functioning the cells. Which also is related to never cells:)
* Hopefully this helps:) Mark me the brainliest:)!!!
According to the ocean conveyor belt virtual lab what will happen if earth led average temperature increases by 2C
Answer:
The correct answer option is D. Much of the east coast will experience flooding.
Explanation:
According to the ocean conveyor belt virtual lab, much of the east coast will experience flooding if earth’s average temperature increases by 2*C.
The increase in the temperature of the sea can cause the polar ice caps to melt. This results in more and more water being added to the to the east coast, thus rising the ocean levels and eventually causing flood.
Answer:It’s D
Explanation:got it right
Identify the brain stem in the diagram below! Answer For Extra Points!!
1)C
2)A
3)D
4)B
Answer:
A
Explanation:
The brain stem is connects to the cerebrum with the spinal cord.
Answer:
The correct answer will be option-2 (A).
Explanation:
The brain is the main control centre of the body which is divided into three portions: the upper forebrain, middle midbrain and the lower hindbrain.
The hind-brain present in the lowest portion connects the brain with the spinal cord which consists of the pons, medulla oblongata and brainstem. The brainstem consists of the thalamus and hypothalamus which helps in coordination of the transmission of the signal from the brain to the body. It controls important functions of the body like breathing, digestion, walking and several other important functions.
Thus, option-2 (A) is the correct answer.
what is the biggest challenge middle adolescents face during middle adolescent development? explain.
A big challenge here is probably identity crisis. Adolescents are about to be exposed to adulthood, and they may not have everything figured out yet. For example, they may not know what they would like to do as a career. This causes an “identity crisis.” Which is where the person questions who there are and their purpose in life. It’s totally normal in adolescent development. As long as you continuously keep trying to figure things out, you should be find emerging into the adult lifestyle.
Answer:
having to deal with hormones and voices cracking.
Explanation:
I had to deal with this kind of problem after 6th grade. My hormones kept flustering and there were times where my voice would crack.
What is the definition of the periodic table
Answer:
A table of the chemical elements arranged in order of atomic number, usually in rows, so that elements with similar atomic structure (and hence similar chemical properties) appear in vertical columns.
The periodic table is essential for organizing chemical information and facilitating the study of element properties and interactions.
The periodic table is a tabular display of the chemical elements organized based on three major factors: their atomic numbers, electron configurations, and recurring chemical properties. In this table, the elements are arranged in an increasing order of their atomic numbers (which is the number of protons in an atom's nucleus). This layout ensures that elements with similar properties appear in vertical columns, known as 'groups.'
Additionally, the table is structured so that elements with the same number of electron shells fall into horizontal rows, known as 'periods.' The periodic table was first devised by Dmitri Mendeleev in 1869, who noticed that the properties of elements exhibited a repeating pattern, or periodicity, when arranged by atomic weight.
Today, the modern periodic table is a crucial tool in chemistry, helping scientists understand and predict the behavior of elements and compounds in chemical reactions. Its standard form includes a main body with an eighteen by seven grid and a smaller section with two rows at the bottom comprising the lanthanides and actinides.
In the diagram below, images 1 and 2 represent the chemical and molecular levels of organization. Based on the levels of organization, what does image 4 represent?
tissue
cell
organ system
organ
Answer:
The answer is tissue.
Explanation:
e2020, the other answer is false.
Following the standard biological levels of organization, and assuming that each image represents the next level, the fourth image likely represents the tissue level of organization. This comes after the molecular and cellular levels.
Explanation:In the conventional understanding of the biological levels of organization, the molecular level is followed by the cellular level (individual cells), which is then followed by the tissue level (groups of similar cells that carry out a specific function). This is then followed by the organ level (several tissues working together to perform a specific function), which is then succeeded by the organ system level (groups of organs working together to perform complex functions in an organism).
Given that images 1 and 2 represent the chemical and molecular levels, and if we follow the typical sequence of organizational levels, image 4 would most likely represent the tissue level of organization after the cell level (presumably represented by image 3).
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Some people use genetic testing before becoming pregnant to find out whether A. Their child is likely to be tall. B. Their child is likely to have dawn syndrome. C. They’re carriers of a genetic disorder. D. They’re able to become pregnant
C. They're carriers of a genetic disorder.
Genetic testing can help screen for variants/mutations in potential parents' DNA. If one or both parents test negative, they will know their child will not inherit the disorder. Likewise, if they both are carriers, there is a chance their child could be affected, which is helpful information in determining whether to have their own children, or how to address their child's possible disorder.
Answer:
c.
Explanation:
Michael notices that when he’s sick his body heat increases he wonders what other body systems interact together which of the following provides an example of two human body systems working together?
Michael's increased body heat during illness showcases the interaction between the nervous and immune systems. Shivering, controlled by the nervous system, is one way the muscular system helps regulate temperature. The integumentary system also plays a crucial role by dissipating or retaining heat.
Explanation:When Michael observes an increase in body heat during illness, this is due to the integrated responses of multiple body systems. For example, the nervous system and the immune system work together to regulate body temperature. The brain's temperature regulation center detects an increased body temperature through sensors and activates the heat-loss center. As a result, the body may induce shivering, increase blood flow to the skin, and enhance sweating to promote heat loss. Shivering is a muscular activity that generates heat, and this process is controlled by the nervous system in response to signals it receives about the body's core temperature.
Moreover, in conditions like type 1 diabetes, the endocrine system's failure to produce insulin also exemplifies how interconnected body systems are, impacting the cellular respiration process across all cells. The muscular system can also regulate body temperature, as during fever, muscles generate warmth by shivering.
When a child breaks a bone, which of the following is responsible for rebuilding new bone tissue in the fracture while it heals?
A. Osteoblasts
B. Osteoclasts
C. Osteoporosis
D. Osteocytes
Answer: Option 'A' is correct.
Explanation:
When a child breaks a bone, Osteoblasts is responsible for rebuilding new bone tissue in the fracture while it heals.
Because Osteoblasts build new bone if bones get broken somehow.
The new bone that built by Osteoblasts is known as "Osteoid", which is composed of bone collagen and other protein.
They control mineral and calcium decomposition.
Osteoblasts are found on the surface of new bone.
Hence, Option 'A' is correct.
Were there more producers than consumers and more consumers than predators on your pyramid? Why or why not? Were there any that could have fit in more than one category?
Answer:
If there is no grain available for the mouse the mouse population would die because it would have lost its main food source then the predator of the mouse would have less food resulting in a decrease in population
Explanation:
Answer:
Pyramid -"It is series of levels on which the different organisms are characterized on basis of there ecological levels or properties relating energy consumption or creation."
As some are producers which carry out while using various metabolic pathways to create energy for the whole biosphere or as whole for all the livings begins. As there are other organisms who consumes the energy created in the system or bio-sphere.
Explanation:
Pyramid (Ecological level)
So, the producers must be in large in number in the ecological level, so, that can be able to create more energy for the entire population of different specie to survive and sustain there body mechanism. And the consumers are there in low in number, due to the reason that there can be little to no scarce of energy. As energy created will be finished in no time,if the consumers are more in number as compared to the producers present on the lower level of the pyramid.Example:
If due to some reason, the producers at lower level become less in number, then there will be no grass available for the whole livestock population, which will obviously leads to decrease in its total population. As it will be also alarming for the consumers population at upper ecological level,which are also present at a high number or increasing population.Certainly life will be at risk on Earth if the number of producers creating the energy for survival of beings decreases at lower level of the pyramid.
The complement system is a barrier of the immune system.
The complement system is a group of in the blood that detect pathogens that have entered the body.
The complement system can cause , the swelling of a part of the body accompanied by redness, swelling, and pain as a response to infection.
Answer:
"The complement system is a biological barrier of the immune system. The complement system is a group of proteins in the blood that detect pathogens that have entered the body. The complement system can cause inflammation , the swelling of a part of the body accompanied by redness, swelling, and the pain as a response to infection. 5.0."
Answer:
First Blank- Biological
Second Blank- Proteins
Third Blank- Inflammation
Explanation:
What is speciation?
O A. Interbreeding between species
O B. The joining of two species
O C. The mating of two organisms
O D. The formation of species
Speciation is the process by which new species are formed due to genetic changes, typically resulting from geographic or reproductive isolation.
Explanation:Speciation, represented by option D, is the process by which new species are formed. It is a fundamental concept of evolution. Speciation occurs when genetic changes lead to the creation of new species, typically caused by geographic or reproductive isolation which hinders gene flow between populations. For example, if a group of animals of the same species becomes geographically isolated from the rest of its species, it may evolve to become a different species due to the unique formation of genetic traits in its isolated environment.
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What marked the end of the Precambrian period?
A. The appearance of complex, multicellular animals
B. The division between archaea and eukarya
C. The emergence of simple, protist-like animals
D. The development of DNA-based viruses
The emergence of sophisticated, multicellular animals in the Precambrian epoch is the earliest time in earth's history. It was distinguished by many evolutionary traits and peculiarities, hence option A is correct.
What is Precambrian period?Although the Precambrian accounts for almost seven-eighths of Earth's history, relatively little is known about it, and what is known has mostly been discovered after the 1960s.
The Precambrian fossil record is less extensive than that of the Phanerozoic that followed it, and Precambrian fossils (such as stromatolites) have limited biostratigraphic utility.
It is due to the fact that many Precambrian rocks have undergone extensive metamorphism, hiding their origins, while others have been eroded away or are buried deeply beneath Phanerozoic strata.
Therefore, the advent of complex, multicellular organisms that could carry out complicated tasks signaled the end of this era.
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The correct option is A. The appearance of complex, multicellular animals
The end of the Precambrian period was marked by the appearance of complex, multicellular animals.
This period, which lasted from about 4.6 billion years ago to around 541 million years ago, witnessed the development of various life forms, but the emergence of complex, multicellular organisms was a significant milestone.
This event is often associated with the beginning of the Paleozoic Era and the Cambrian Explosion, during which a rapid diversification of multicellular animal life occurred.
Option A, "The appearance of complex, multicellular animals," correctly represents the event that marked the end of the Precambrian period.
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Genes are responsible for
Answer:
All aspects of life, making proteins and chromosomes.
Answer:
Genes are responsible for storing genetic information, which is saved to be transmitted to the offspring. Genes are found on chromosomes and contain all the necessary information on how each cell in the body should work; They also serve for the formation of proteins.
Robert decides to go for a run when he gets home from school. As he begins running, his breathing rate starts to increase. What are the mechanisms that cause his breathing rate to increase?
Answer:
When oxygen levels in the blood decrease, the respiratory center sends signals to the diaphragm to increase the rate at which it contracts and relaxes.
Explanation:
what is the main difference between an internal combustion engine and an external combustion engine?
PLEASE ANSWER ASAP
A) The burning of fuel occurs inside the cylinder with the piston in an external combustion engine.
B) The burning of fuel occurs inside the cylinder with the piston in an internal combustion engine.
C) An internal combustion engine doesn’t have a cylinder and a piston.
D) An external combustion engine doesn’t have a cylinder and a piston
Option B is the best answer for your question...
Answer:
The burning of fuel occurs inside the cylinder with the piston in an internal combustion engine. - B)
Which organisms are prokar
O archaea
O fungi
protists
plants
.
Answer:
The first option.. Archaea
Archaea organism are defined as the Prokaryotes. So, the correct option is A.
What are Prokaryotes?A prokaryote is a type of organism that lacks internal membranes, which prevents it from having a recognisable nucleus and other organelles. One of the most well-known prokaryotic species is bacteria. Prokaryotes differ from eukaryotes by not having internal membranes.
The principal osmotic barrier of prokaryotic cells is the membrane, which is composed of phospholipids. Ribosomes, which are responsible for protein production, and a double-stranded circular DNA chromosome are both found in the cytoplasm.
The circular DNA units known as plasmids, which are found in many prokaryotes, have extra disposable cell activities such encoding proteins that render antibiotics inactive. Prokaryotes with flagella exist. Archaea organism are defined as the Prokaryotes.
Therefore, the correct option is A.
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The recycling truck comes every Friday to gather what has been put into the trash cans. This is similar to _______ in eukaryotic cells.
The recycling truck's function of gathering waste is analogous to lysosomes in eukaryotic cells, which act as recycling centers with enzymes that break down biomolecules and old cellular components for reuse.
The recycling truck's role in gathering and carrying away waste for recycling is similar to the function of the lysosome in eukaryotic cells. Lysosomes are like the recycling centers of cells because they contain digestive enzymes that break down various biomolecules and old cellular components into their basic parts. These parts can then be reused by the cell to build new molecules or to produce energy. This process is critical in maintaining cellular health by removing damaged or non-functional components and recirculating their building blocks. The enzymes within the lysosome operate at a lower pH, which is more acidic than the rest of the cell, allowing these enzymes to efficiently break down materials without impacting other cellular processes.
Once glucose enters the body's cells, it is used to provide energy. What are the two main life processes for which that energy is used?
Answer:ATP, or adenosine triphosphate, is chemical energy the cell can use. It is the molecule that provides energy for your cells to perform work, such as moving your muscles as you walk down the street. But cellular respiration is slightly more complicated than just converting the energy from glucose into ATP.
Explanation:
The two main life processes for which energy is used include:
RespirationTransportationGlucose is readily absorbed into the cells of the body to provide the required
energy needed to perform various forms of activities in an optimal manner.
The energy derived are used in the process of our movement from one
place to another in search of food or to carry out other activities such as
running from danger etc.
It also helps in the process of respiration to ensure oxygen is adequately
inhaled and distributed to other parts of the body.
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What is an outcome of gene regulation
Answer:
Gene regulation results in homeostasis that equilibrium between interdependent elements to different gene expressions by physiological processes.
Explanation:
Gene regulation is any mechanism utilize by a cell to change in the production of specific protein or RNA. Cells can alter their gene expression to stimuli developmental pathways, respond to environmental stimuli, or adapt to the new change.
Gene regulation is a cellular process that regulates the manner and rate of gene expression. A complex set of interactions between genes, protein, RNA molecules and other components of the gene expression system.
What is the role of MRNA in the process?
Answer:
carries the genetic information copied from DNA in the form of a series of three-base code “words,” each of which specifies a particular amino acid.
Cancer is a disease caused by
cells reversing the process of mitosis.
cells undergoing mitosis uncontrollably.
cells that have stopped undergoing mitosis.
cells that end up with extra DNA after mitosis.
Answer:
cells undergoing mitosis uncontrollably.
Cancer is a disease caused by cells undergoing mitosis uncontrollably which is in option b as when the normal regulatory mechanisms that control cell division become disrupted or damaged, cells can start dividing and multiplying without proper control.
Cancer is a complex and diverse group of diseases characterized by the uncontrolled growth and division of abnormal cells in the body. These abnormal cells, known as cancer cells, have the ability to invade nearby tissues and spread to other parts of the body through a process called metastasis. Cancer can develop in any part of the body and can affect various organs and tissues.
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