Answer:
Through "Compound microscope" cells were first observed.
Explanation:
Robert Hooke used compound microscope to detect the cork cell which laid to the basis for detection of the cell in 1665. The microscope was planned by him to detect a part of cork where he visualized tiny elements fixed combinedly and he called those elements as “cell”. He didn’t realize a little organelles within the cell as he detected the lifeless plant cell with cell walls which look like minor chamber. The compound microscope is used to assess the magnified pictures of the model existing in the glass slide and the magnification power used by Robert Hooke is 50X. The tests and explanations ended using numerous lenses were logged in his book called "Micrographia" or some Physiological Descriptions of Minute Bodies completed by Magnifying Glasses with Explanations and Inquiries Thereupon. "The cell is the structural and functional unit of an organism where plants and animal cells contain different cellular organelles with specific function."
Compound microscope was first used to observe cells.
Explanation:
In 1965, Robert Hooke observed a slice of cork under a compound microscope and saw the compartments in it. He named these compartments as cell.
The compound microscope has a high magnification power. It uses two convex lenses of short focal length. These lenses are objective lenses and eyepiece. It has resolution of 10X, 40X to obtain a magnified image of tiny entities like cell.
Imagine that you are the advocate for a specific health topic and that you want to create a public service announcement to raise awareness in your community. What health topic would you choose and what medium would you use to convey your message?
Answer:
"The health topic I would chose would probably be tobacco use. I would most likely have one of those pointers and a big poster with everything needed written down on it."
Explanation:
Most of the death occurs due to the smoking rather than alcohol, car crash, AIDS, murder and drugs. Because smoking leads to the heart disease which ultimately causes stroke, chronic lung problems and various other disorders. This may also include the emphysema and bronchitis. The people who use to do smoking cannot taste the food like they previously used to. It also curbs the appetite. Acting as appetite suppressant.
Answer:
If I would the advocate for a specific health topic and that I want to create a public service announcement to raise awareness in my community I will raise awareness about social anxiety problems because I know that many teens suffer these and cause them not able to connect with his/her friends and feel lonely and as for the medium I will probably used social media.
hope i helped
Scientific literacy means that you
Answer:
Scientific literacy means that you have a knowledge about the scientific concepts.
Explanation:
Scientific literacy can simply be described as having an understanding of the different concepts of science and having knowledge about the current trends and procedures of the scientific world. Scientific literacy makes it possible for a person to address different societal problems because a scientifically literate person has better understanding about the world. A scientifically literate person will be better able to judge other scientific researches being made and generate a peer- review.
If metamorphism occurs due to heat generated by magma, it is called
metamorphism.
Answer:
Contact metamorphism occurs when magma intrudes or forces its way into existing rock. The heat of the magma bakes the surrounding rocks causing them to change. This is a local event. The changes due to contact metamorphism are relatively small and are said to be low-grade metamorphism.
In which layer is the pressure the highest?
O
A. The lower mantle
O
B. The inner core
O
c. The outer core
O
D. The crust
how many chromosomes are in a human gamete
Answer:
23 chromosomes
Answer:
. In humans, gametes are haploid cells that contain 23 chromosomes, each of which a one of a chromosome pair that exists in diplod cells.
Explanation:
CHECKPOINTS (continued)
8. A student thinks that populations higher in a food chain are larger because they
deplete the populations of organisms lower in the food chain. Using evidence
from this lesson, explain why this student's thinking is incorrect.
In the food chain every time it attains the higher trophic level only ten per-cent of total energy is transferred. The higher trophic level populations in a food chain are larger because the biomass needs to be maintained as there are fewer organisms the biomass is distributed to maintain the equilibrium in the ecosystem.
Explanation:
The less energy passed on to the higher level would cause less population in the higher trophic level and biomass gets distributed so the organisms keep increasing in the size at the higher trophic level.
(Apex) Which best describes how fossil fuels form?
A. Farms are used to produce natural gas.
B. Natural gas is burned to form coal and oil.
C. Sunlight converts grass to coal and oil.
D. Decayed organisms are compressed underground.
D
fossil fuels form when decayed organisms are compressed underground.
Explanation:
Usually, when biotic matter especially algae and plankton die they sink to the bottom of the oceans. They get overlaid by layers of sediments over time. As the layers of sediment increase, the pressure from the overlying weight causes the organic matter (which is largely carbon-based) to be compressed, and high temperatures associated with the high pressure, causing them to metamorphose into crude oil.
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The statement best describes the fossil fuels are Decayed organisms are compressed underground. option D is correct.
Fossil fuels are formed from the remains of ancient plants and animals that lived millions of years ago. These organisms, such as plants and algae, captured energy from the sun through the process of photosynthesis.
When these organisms died, their remains accumulated in layers on the Earth's surface, such as in swamps, oceans, or lakes. Over time, these layers of organic matter were buried under sediment, such as mud, sand, and rocks.
As more and more sediment piled up, the organic matter was subjected to immense pressure from the weight of the overlying layers. This pressure, combined with heat from the Earth's crust, caused the organic matter to undergo physical and chemical changes.
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Most of the grasshoppers of a particular population are brightly colored.
These bright colors war potential predators that the grasshoppers are
poisonous. One year, several green grasshoppers are produced that blend in
with the surrounding grass and brush.
How might this coloring present an advantage to these grasshoppers?
Explanation:
By NATURAL SELECTION, the green grasshopper in the population will increase with succeeding generations – also meaning the allelic frequency for green color with increase. This is because the grasshoppers blend / camouflage well with their green environment hence are less exposed to their predators that the brightly colored grasshoppers. These grasshoppers are therefore more likely to reach maturity and pass down their genes by reproduction.
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HELP!
Item 7
Which type of stress can cause an anticline?
force
shear
tension
compression
Final answer:
Compression stress causes rocks to squeeze together and form anticlines, and is common at convergent plate boundaries.
Explanation:
The type of stress that can cause an anticline is compression. When compressional stress occurs, rocks are squeezed together and it typically results in the rock layers bending into arch-like shapes known as anticlines. Such stress is most common at convergent plate boundaries, where tectonic plates move towards each other, causing the crust to thicken and buckle.
e Skeleldl Systenll de Lwo umeinl vigail systems,
Why do you think the word musculoskeletal exists?
and skeletal system have?
Muscles and human skeleton are very much connected with each other.
Explanation:Muscles form one of the 5 systems of our body. They consists of both the skeletal muscles as well as the smooth muscles of our body. While the smooth muscles are the part of the organs, the skeletal muscles are attached with bones either directly attached, or they are attached with the bones by means of tendons. These muscles are formed of cells called sarcomeres and they are the structures which make the bones move. Bones ars like the rods and muscles are like hydraulics. So they are collectively called as musculoskeletal system.
Skeletal system is referred to as the collection of each and every bones of our body which is roughly 206 bones, and their organization in body helping us to stand and move.
Which is a way that society controls science?
O
A. People pass laws to restrict some research.
SC00
.
.
-
O
B. Scientific articles are peer-reviewed by the public.
O
C. Scientists find new information that helps society.
O
WS
D. The public decides which science is correct.
Answer:
The correct option is A) People pass laws to restrict some research.
Explanation:
When it comes to the field of science, the society tends to be more concerned about the ethics which need to be properly followed so that science does not turn out to be a devastating field. For example, the ethics brought about by society has restricted scientists to try human cloning on the whole. Although, cloning or parts such as tissues and organs can be done but cloning of the entire human individual is considered unethical and is restricted. This is because science always remains beneficial and not devastating for humans.
The diagram shows a cell that has completed mitosis and cytokinesis. Which stage of the cell cycle will both daughter cells now enter? Hurry need help on this Question
A) Meiosis
B) Interphase
C) Cytokinesis
D) The cell does not enter into a new cell cycle
Biology questions. some are select all that apply but some might not have multiple choices
Answer:
The answers are:
4. The streamlined body shape of a dolphin and a shark. (assume no recent common ancestor with trait).
6. Organisms of different domains
7. Made up of tissues
Explanation:
4.
Analogous Structures:
Analogous structures are organs or structural (morphological or anatomical) features that perform similar functions but do not possess the same evolutionary and ancestral origin.
6.
The three principal domains of life are:
ArchaeaBacteriaEukaryotesThese domains possess fundamental differences in the form of genetic material and cellular characterization (unicellular/multicellular). This is the broadest system of classification. The others, kingdom, phylum, order, genus, species are further classification of the 3 major domains.
7.
The first and fundamental postulate of the cell theory, the basic theory of biology is:
All livings things are made up of cells.
Cells further combine to form tissues. Therefore, any organism that is composed of cells and tissues is living.
Which substance moves through all the spheres of the Earth system?
Wood
Nitrogen
Owater
Rock
Answer:
water
Explanation:
simple ans easy ubderstandble question
Answer:
water
Explanation:
because wood is not a licuid it can only brake not move and so can rock nitrogen is not as good to go though so water is the best option
Determine whether each statement below describes traditional or modern classification.
A based on similar appearance
based on evolutionary relationships
Aknown as Chadistics
known as Linnaean classification
DONE
1
Intro
Answer:
Based on similar appearance - traditional
Based on evolutionary relationships- modern
Known as cladistics- modern
Known as Linnaean classification- traditional
Explanation:
Linnaeus was a Swedish Botanist who was the first to classify organisms based on the structural similarities which organisms had. This method of classification came to be known as the Linnaean classification. Organisms which had more closer resemblances in structures and features had more groups or taxa in common.
The modern system of classification depends on the evolutionary history of organisms. It determines which organisms are more closely and have common ancestors in the past.
Answers for the entire assignment for e2020! This will help future people in order to get a excellent grade! :)
Determine whether each statement below describes traditional or modern classification.
(Answers)
Traditional Classification is based on similar appearance
Modern Classification is based on evolutionary relationships
Modern Classification is known as Cladistics
Traditional Classification is known as Linnaean classification
Which piece of information provided the stimulus for the shift from traditional classification to modern classification?
Answer: An understanding that species share a common ancestor
Fill in the blank below with the vocabulary word that best completes the sentence.
Using a ______ clock, scientists are able to estimate the amount of time that two species have been evolving independently.
Answer: molecular
How does the molecular clock work?
Answer: It compares the number of mutations that exist in the DNA of two different species.
Select the correct word from the drop-down menu to complete the sentences.
______ are branching diagrams that depict the evolutionary relationship among species.
Answer: Cladograms
_____ is a point in a cladogram where a single ancestral lineage breaks into two or more descendant lineages.
_____ is a group of organisms that includes an ancestor and all of its descendants.
_____ is any named group of organisms, whether they form a clade or not.
Answer(s):
Node
Clade
Taxa
According to the cladogram, which of the following is the derived characteristic shared by amphibians and reptiles?
Answer: Lungs
After much research and DNA analysis it has been determined that species in the same clade are actually more distantly related than originally thought. What is one way that the cladogram may change because of this information?
Answer: A node would be introduced
According to the cladogram, which species are MOST closely related?
Answer: D and E
Use the cladogram about fish to answer the following questions.
Which of the following best describes the organism located at point B?
Answer: Has jaw, but no bones
The organism at location D is the ______ to organisms at location A, B, and C.
Answer: Ancestor
According to the cladogram, arthropods are MOST closely related to which group of organisms?
Answer: annelids
You're welcome! :)
Cells transport molecules into the cell in many different ways. One method is through endocytosis, shown in the model. In endocytosis, the cell brings specific molecules it needs, finding fluid, into the cell. Why does the structure of the plasma membrane make this type of transport necessary for fluids?
Yes structure of membrane is necessary to transport these fluids.
Explanation:The method of transport of fluids into the cells by using the plasma membrane is called pinocytosis or endocytosis. In this method, first the cell finds a fluid that is suitable to be taken inside the cell for further necessities like nutrition, immunity etc. Then the cell produce some pseudopodia which covers up the fluid. Then a depression in cell membrane is seen engulfing the fluid and the margins of that depressed part approximates, resulting in punching off the portion of cell membrane into the cell, forming a secondary lysozome. This is seen in figure.
Without the help of the plasma membrane, the engulfing of the fluid by the cell is impossible, so plasma membrane structure is important for endocytosis.
Answer:
While the heads of the phospholipid structure attract water, the tails are hydrophobic. The model shows how the hydrophilic section folds around the fluid molecules to bring them into the cell so they don’t need to pass through the hydrophobic tails.
This is the right answer for Edmentum and Plato
Like and Rate
2. The ability of an organism to survive and reproduce in its environment is called "fitness." But, it
one version (called the allele) of a trait (like fur color) enables an organism to survive and reproduce
better than other organisms in that same environment, we say that it has a "selective advantage".
Explain how fur color can provide a selective advantage.
Answer:
Traits, like fur colour, can be selectively advantageous for organisms belonging to a certain species.
Fur colours often allow organisms to better hide from their predators
For example, consider a brown fur coloured squirrel and a white fur coloured squirrel. The brown coloured squirrel will be better adapted to hide from its predators as its colour can camouflage with the colour of the woods. The white colour squirrel will not have such a selective advantage and will have more chances to be eaten up by its predator.
What ethical obligations do you personally feel toward wolves and whales ? What ethical obligations do you feel toward future genera tions of people ? What ethical obligations do you feel toward future generations of wolves and whales?
Answer:
We, as humans, have the ethical responsibility to treat every creature on the Earth in a respectful manner. The respect shall be maintained whether is be wild- life organisms such as wolves or other humans.
We shall not destroy the wildlife populations just for fun or for meeting our food resources. A wild number of wolves are hunted each day just for fun. This is unethical and should not be done. Whales are also hunted to an endangered level for meeting he needs of the humans. This action is also unethical according to me and should be stopped.
We should be ethically obligated to leave a peaceful and respectful environment for our future generations.
A certain population of bluebirds eats spiders as a major food source. Which of the following ecosystem changes would impact this population of bluebirds the most?
Answer:
The correct option is an increase in the spider and insect population.
Explanation:
As bluebirds feed on spiders and their major source of food, hence an increase in the population or decrease in the population of the spiders will heavily affect the population of the bluebirds.
If the population of insects and spiders increases, there will be enough food source available for the bluebirds due to which their population will grow in size. On the other hand, if the population of spiders decreases, then there will be competition for food and the bluebirds population will also start to decrease.
The bluebird population would be most impacted by an increase in the spider and insect population, as it directly increases their food supply. Therefore the correct answer is C) an increase in the spider and insect population.
The correct answer is C) an increase in the spider and insect population. A rise in the spider and insect population provides more food resources for the bluebirds, directly benefiting their population. A decrease in daylight hours might affect them but not as drastically, while changes in rabbit and fish populations are irrelevant. These changes highlight how food availability can directly affect species populations.
A) a decrease in the number of daylight hours could affect the bluebirds' hunting behavior and reproduction patterns but not as significantly as their immediate food supply.B) a decrease in the rabbit population is largely irrelevant to bluebirds since rabbits are not a food source for them.D) an increase in the fish population is also irrelevant as bluebirds do not typically prey on fish.Environmental changes like these can impact species populations directly or indirectly through factors such as food resource availability and predator densities, as noted in ecological studies.
complete question:
A certain population of bluebirds eats spiders as a major food source.
Which of the following ecosystem changes would impact this population of bluebirds the most?
A) a decrease in the number of daylight hours
B) a decrease in the rabbit population
C) an increase in the spider and insect population
D) an increase in the fish population
what is the most general group into which organisms can be classified
Answer:
Domain is the most general category.
Explanation:
Biogeography is the study of the
a. distribution of organisms around the world,
b). environments around the world.
C.different types of rocks around the world.
d. age of fossils around the world.
different
Answer:
your correct answer A. that is.
Explanation:
Biogeography includes studying the distribution of organisms around the world. The correct option is a.
What is biogeography?Biogeography is a field of biology that aims to investigate the current and historical distribution patterns of biodiversity, as well as the underlying environmental and historical causes.
Biogeography encompasses the study of distribution of organisms around the world.
Thus, the correct option is a.
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How does a genotype differ from a genotype?
what organelle would you expect to find in large numbers in cells that pump stomach acid out against a concentration gradient? Give a reason for your answer.
Explanation:
They contain more mitochondria.
Energy in the form of ATP is required to pump hydrogen ions against the concentration gradient. Active transport is a mediated process that requires the use of specialized membrane proteins these proteins require energy in the form of avenues and triphosphate or ATP in order to facilitate necessary conformational changes to the large protein molecules
In all eukaryotic cells, mitochondria are small cellular organs bound by membranes, making up most of the chemical energy needed to power the cell's biochemical reactions. This chemical energy is stored inside the generated molecule ATP. Respiration in the mitochondria uses oxygen for the production of ATP in the cycle of the Krebs or Citric acid via pyruvate oxidation (through the cytoplasm glycolysis process).
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7. Atoms gain and lose electrons to get a ____________ outer NRG level.
What goes in the blank?
Answer: to get a electron
Explanation:
Explanation: Atoms gain or lose electrons to get a full outermost energy level.
Atoms want to be happy and they can achieve that by the octet rule. It states that 2 atoms can go in the first shell and after that 8 can go in the second shell and so on. Atoms want to have a full outer shell of 8 electrons unless their the elements with fewer protons like hydrogen and helium since they will need 2 electrons to satisfy the octet rule.
What is the final product of translation?
O
A. Single strands of DNA
O
B. Two copies of a DNA molecule
C. Complementary strands of mRNA
OD. Proteins
Answer:
the right answer is option D. proteins.
Explanation:
The molecule that results from translation is protein -- or more precisely, translation produces short sequences of amino acids called peptides that get stitched together and become proteins. During translation, little protein factories called ribosomes read the messenger RNA sequences.
I hope this is the answer. I'm not sure. but I think, it is.
The final product of translation is proteins. During translation, the information encoded in messenger RNA (mRNA) is used to synthesize a specific protein.
Ribosomes, along with transfer RNA (tRNA) molecules carrying amino acids, read the mRNA sequence in groups of three nucleotides called codons.
Each codon corresponds to a specific amino acid, and as the ribosome moves along the mRNA, it links the amino acids together to form a polypeptide chain.
Once the polypeptide chain is complete, it undergoes further processing and folding to become a functional protein. Therefore, the correct option is D. Proteins.
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does PTC have a scent
PTC (Phenylthiocarbamide) does not have a detectable scent. It is used to demonstrate genetic differences in taste perception, where the ability to taste it is determined by specific gene variants.
Phenylthiocarbamide (PTC), often used in genetic tasting experiments, does not have a scent that can be detected by humans. The chemical substance itself is used primarily in a taste test to demonstrate genetic variance in taste perception. PTC tasting is a classic example of a trait that exhibits Mendelian inheritance patterns, where the ability to taste PTC is a dominant genetic trait. Individuals who can taste PTC describe the compound as having a bitter taste, while those who cannot taste it are referred to as "taste-blind." The presence of specific versions (alleles) of this gene determines an individual's sensitivity to tasting PTC and similar bitter compounds, such as those found in Brussels sprouts and cabbage.
discuss the meaning of the following statement:"The job -seeking process is just like a job itself ".Include suggestions for conducting a successful job search
Answer:
The above statement means that the process of job-seeking requires so much effort that it is like a job itself. You have to be as committed to job- seeking as you will have to be when you actually get a job. The process of job- seeking is tiresome in today's world, especially for people who have a little or no experience at all. You have to be attentive for every new job- opening and work hard to submit your resumes, forms etc. The, you have to work hard for the interviews being conducted. The waiting process also takes a lot of time and patience. Hence, the process of job-seeking is just like a job itself.
t elevatUsing species C as a reference, you find that there are more genetic differences between species A and species C than between species A and species B. Which of the statements would best reflect the mode of speciation in these mice?
Answer:
Speciation was allopatric or peripatric, but would depend on the number of individuals that dispersed from the original populations.
Explanation:
There are two types of speciation: allopatric and peripatric.Allopatric speciation occurs when the species of same population gets isolated that results in lack of gene flow.From the isolated population, new species are formed then it is known as the peripatric speciation.All these isolation of populations and formation of new species depends upon the initial or original group of species that was dispersed.What is the genotype and genotype ratio for this Punnett Square?
Answer: Genotype:
Pp ( heterozygous dominant )
pp ( homozygous recessive)
Genotype ratio: 2:4 Pp heterozygous dominant
2:4 homozygous recessive
Explanation: In the following cross the genotypes or alleles are given. Pp heterozygous dominant and a pp homozygous recessive. When crossed it produced 50% Pp and 50% pp genotypes or alleles.
Final answer:
The genotype ratio of a cross between a "GG" parent and a "gg" parent will be 100% heterozygous with a genotype of "Gg".
Explanation:
In a cross between a "GG" parent and a "gg" parent, the resulting offspring will all be heterozygous with a genotype of "Gg". The genotype ratio of this cross will be 100% heterozygous. This means that all of the offspring will have the dominant gold fin color.
the geosphere is the most directly influenced by an external source of energy TRUE OR FALSE
It is FALSE that the geosphere is the most directly influenced by an external source of energy. Rather the geosphere is the most directly influenced by an INTERNAL source of energy.
Explanation:
Due to the enormous pressure of the overlying rock layers, in the core of the earth, their enormous heat energy generated and trapped. This energy is also added up by the radioactivity of radioactive elements deep in the earth. This internal energy source powers the geosphere. This is evident because of the tectonic plate movement that is driven by the convection current of the mantle layer below. This same energy is responsible for other phenomena like volcanic mountains, earthquakes, and even the earth’s magnetic shield.
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