The microscopes we use today are far more complex than those first microscopes like the one used in the 1600s by Anton van Leeuwenhoek. Robert Brown discovered the nucleus of plant cells, and Karl Rudolphi conducted experiments that proved cells had their own cell walls.
What is microscope?
The instrument that is used to observe tiny particles as well as objects or cell of the body has been known as microscope. One lens in the microscope has been used to magnify the image at least once. The main function of the lens has to bend the light in the direction of the eye and forms the larger image of the object.
There are several types of microscope and these are electron microscope,scanning probe microscope, stereomicroscope, simple microscope, and light microscope.The main function of the lens has to bend the light in the direction of eye and forms the larger image of the object.
Each microscope have different function and ability to observe the object. As we know that the size of the cell has very small and it has impossible to observe it without microscope. So, microscope helps to observe the interior part of the cell and it will help in the study of different part of cell.
Therefore, The microscopes we use today are far more complex than those first microscopes like the one used in the 1600s by Anton van Leeuwenhoek.
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A structural protein collagen sometimes has a mutation that can causes a condition in which bones are weak and break easily. Which of the following are components (monomers) of collagen?
a. Amino acids
b.Nucleotides
c.Fatty acids
d.Carbohydrates
A Russian citizen has illegally obtained a Siberian tiger and is trying to sell the tiger’s fur in the United States. What treaty does this violate?
A.Tiger Treaty
B.Lacey Treaty
C.CITES
D.EPA
Answer:
Cites,
Explanation:
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The treaty that the Russian citizen violated is CITES or Convention on International Trade in Endangered Species. The treaty was drafted from 1973 in order to protect the over - exploitation of wildlives.
A Russian citizen has illegally obtained a Siberian tiger and is trying to sell the tiger’s fur in the United States, CITES treaty does this violate. Therefore, the correct statement is option C.
What is CITES?CITES, or the Convention on International Trade in Endangered Species of Wild Fauna and Flora, is the treaty that this action would break. Since Siberian tigers are considered an endangered species, the Convention on International Trade in Endangered Species (CITES) regulates international trade in their parts or products.
A violation of CITES regulations is the illegal possession, sale, or transportation of an endangered species or its parts or products, like fur, without the necessary permits or documentation.
The Lacey Act is a US regulation that denies the exchange unlawfully got natural life, plants, and their items, yet refers to a worldwide settlement that oversees the exchange of jeopardized species across borders. The United States Environmental Protection Agency (EPA) is in charge of enforcing environmental laws.
Therefore, the treaty that this action would violate is CITES (Convention on International Trade in Endangered Species of Wild Fauna and Flora).
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Why didn’t Darwin understand that genetics has passed on.
Answer:
Darwin did not know that DNA would become an important part of his Theory of Evolution. In fact, the subcategory of evolution called microevolution is completely based on DNA and the mechanism of how genetic information is passed down from parents to offspring.
Explanation:
DARWIN'S DIFFICULTIES WITH BLENDING INHERITANCE AND HIS THEORY OF PANGENESIS. Darwin failed to understand the significance of these results because he had no model of particulate inheritance that could be applied to genetic data.
What is the energy source in photosynthesis?
Answer:
the sun
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What is an example of an event that can compromise an ecosystem?
1.seasonal climate change
2.seasonal dry period
3.d eveloping land around cities
4.high temperatures
Answer: Seasonal climate change
Explanation:
Answer:
1. Seasonal climate change
Explanation:
oh, and can you please talk to Miracle, she needs a lot of help right now since her grandma passed away
this type of cell is found in females and is needed for reproduction
Answer:
egg cell
Explanation:
Gametes are an organism's reproductive cells. They are also referred to as sex cells. Female gametes are called ova or egg cells, and male gametes are called sperm. Gametes are haploid cells, and each cell carries only one copy of each chromosome.
What is the name of a network of interconnected food chains showing the energy flow through an ecosystem?
Answer:
Food web
Explanation:
what is an embargo? can someone give me an answer to this question? :))
Answer:
An embargo is a government order that restricts commerce with a specified country or the exchange of specific goods.
An embargo is usually created as a result of unfavorable political or economic circumstances between nations.
Answer: 1 : an order of a government prohibiting the departure of commercial ships from its ports. 2. : a legal prohibition on commerce. a trade embargo.
What is the sequence of the mRNA that would be written during transcription of this piece of DNA?
Answer:
AUCUAG is the correct combination
Explanation:
replace every letter with its xorresponding base pair of mRNA where A=U, T=A , C=G
I Need help with this question because I don't understand what to put
Answer:
https://www.nationalgeographic.org/article/hydrologic-cycle/#:~:text=The%20water%20cycle%20consists%20of,evaporation%2C%20condensation%2C%20and%20precipitation.&text=Evaporation%20is%20the%20process%20of,evaporates%20and%20becomes%20water%20vapor.&text=Water%20vapor%20is%20also%20an%20important%20greenhouse%20gas.
Explanation:
What is the pancreas? What are the main secretions of the pancreas,which aids in digestion?
Answer:
The pancreas is a large gland located behind the stomach, close to the first part of the small intestine.
Lipase that breaks down fats, Amylase that breaks down carbohydrates, Protease that breaks down proteins
Explanation:
Darwin hypothesized that new species could appear gradually through small changes in an ancestral species. What experiment did he conduct to test this hypothesis?
Answer:
Darwin conducted an experiment with breeding pigeons.
Explanation:
The pigeons provided the perfect animal to test his theory of selection for quite a number of reasons including its trait diversity from wing structures to color patterns to size to flight patterns. From these experiments he concluded that by natural selection of randomly occurring traits that make species better suited for survival and reproduction, evolve in the astounding diversity of organisms on Earth today.
(not my words)
Answer:
its b
Explanation:
overexploitation means
Answer:
the action or fact of making excessive use of a resource.
Why do you think genetic orders do not completely disappear from the human population, even though there are great researchers and excellent health care? PLS HELP
Answer:
Because we have not yet figured out to successfully remove/change genes on a large scale. Once we do, genetic disorders will no longer be as prevalent.
Explanation:
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a nucleotide consists of?
A.a phosphates sugar and a nitrogen base
B.a sugar and a nitrogen base
C.a phosphate, an amino acid and a nitrogen base
D.a sugar, a protein and uracil
Answer:
a
Explanation:
a nucleotide consists of a phosphates sugar and nitrogen base.
In which ocean's zone would you expect to see the
ecosystem shown?
the open ocean
the intertidal zone
the benthic zone
the neritic zone
zone?
Answer:
La zona intermareal
Explanation:
Por que en la información del texto
Answer:
Intertidal zone
Explanation:
I took the assigment :)
For every action or force
in nature, there is an equal
and opposite reaction.
Answer:
Newton's Third Law of Motion
Explanation:
Newton's third law of motion states that any object that has a force applied to will react in the opposite direction
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What is the name of the organelle labeled with the letter A?
A
B
o
ה ס ד ה I
N
M
к
Animal cell
Answer:
the label letter A is lysosome
What are the phenotypes of an organism?
A. the organism's genes
B. the organism's physical traits
Answer:
A.
Explanation:
The term "phenotype" refers to the observable physical properties of an organism; these include the organism's appearance, development, and behavior. An organism's phenotype is determined by its genotype, which is the set of genes the organism carries, as well as by environmental influences upon these genes.
Answer:
A. the organism's genes
Explanation:
The phenotypes of an organism are the genes carried by the organism.
What causes the reaction rate to decrease as the reaction progresses?
The concentration of the reactants decreasing causes the reaction rate to decrease as the reaction progresses?
How would the sweat glands react when the temperature gets really cold? What about the hair follicles in your skin?
Which of the following processes takes place in the ribosomes of a cell?
O A. Transcription only
O B. Translation only
O C. Transcription and translation
O D. Replication only
Answer:
B.Translatiin only
Answer:
Option B Translation only
Explanation:
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22. What is the importance of cilia and flagella for
microorganisms?
Which of the following best represents the purpose of fertilizers?
Answer:
Fertilizer, natural or artificial substance containing the chemical elements that improve growth and productiveness of plants. Fertilizers enhance the natural fertility of the soil or replace the chemical elements taken from the soil by previous crops.
Describe movement of molecules to maintain a healthy cell environment. Explain in details
Answer:
Very necessary for its survival.
Explanation:
Movement of molecules is very important to maintain a healthy cell environment because some molecules are required by the cell for its growth and development. Some molecules moves inside the cell environment through a semi-permeable membrane such as glucose, oxygen, potassium etc while on the other hand, some molecules are removed from the cell which are waste materials such as carbondioxide etc. If these waste materials are not removed from the cell, it greatly damaged the cell.
are all insects harmful?
Why do animals that are active at night tend to have trouble seeing in color?
Which of the following does NOT include a function of the cell membrane? *
It allows the cell to interact with and sense the external environment.
It controls what enters and exits the cell.
It helps the cell maintain homeostasis.
It provides energy for the cell in the form of ATP.
It provides energy for the cell in the form of ATP.
Mitochondria does that.
1 a
Starting with the mouth, list the structures that air passes through in order for oxygen
to be absorbed by a red blood cell.
red
blood
cell
mouth
tracheal
Answer:
The nostrils, nasal cavity, pharynx, larynx, trachea, bronchi and bronchioles.
Explanation:
The air enters to the mouth and passes through nostrils, nasal cavity, pharynx, larynx, trachea, bronchi and bronchioles and finally reaches alveoli where the exchange of gases such as carbondioxide and oxygen. The hemoglobin takes carbondioxide gas from the cells that are present all over body to the lungs. Their this carbondioxide gas is removed from the hemoglobin and absorb oxygen. This carbondioxide gas is releases from the body on the same pathway but reverse in direction.
What stage of photosynthesis uses
carbon dioxide to make glucose?
A. Light reactions
B. Calvin Cycle
C. ATP synthesis
D Cellular respiration
Answer:
light reaction because glucose is a factor of sugar.