What happens when an atom loses an electron
Answer:
An atom that gains or loses an electron becomes an ion. If it gains a negative electron, it becomes a negative ion. If it loses an electron it becomes a positive ion (see page 10 for more on ions).
Explanation:
Las plantas transforman la luz del sol a través de unas células llamadas: a) Estomas. b) Cloroplastos. c) Raíces. d)Clorofila.
Respuesta:
La respuesta correcta es: b) Cloroplastos.
Explicación:
Los cloroplastos son organelas que se encuentran en las células vegetales y son responsables de realizar el proceso clave para la supervivencia de estos seres vivos: la fotosíntesis.
La fotosíntesis consiste en la transformación de sustancias inorgánicas a materia orgánica gracias a la energía proveniente de la luz solar. Esta materia orgánica será utilizada para la producción de los nutrientes requeridos por las células de la planta.
Los cloroplastos constan de una envoltura conformada por dos membranas y por unas vesículas llamadas tilacoides donde se encuentran las moléculas que participan en la transformación de energía lumínica a energía química que ocurre durante la fotosíntesis, por ejemplo la clorofila (que es un pigmento verde que le da a la planta su característico color).
Sinkholes and caves are an example of:
A. Climate Change
B. Mechanical Weathering
C. Sediment Deposition
D. Karst Topography
Answer:
I think it's D. Karst Topography
Explanation:
Karst is a topography formed from the dissolution of soluble rocks such as limestone, dolomite, and gypsum. It is characterized by underground drainage systems with sinkholes and caves. It has also been documented for more weathering-resistant rocks, such as quartzite, given the right conditions.
In no more than 150 words explain how we use our senses daily, (I did this one time and she marked as bad and she told me to do it again :/ please help )
What is the measured output force of a pulley system if the Mechanical Advantage is 0.48 and measured input force is 10N?
Answer:
Output force is 4.8 N
Explanation:
A pulley is a simple machine made of a grooved wheel with a rope or cable wrapped around it. Pulleys are used in the transmission of energy or motion.
The input force is also known as the applied force while the output force is the force exerted on an object by a simple machine.
The mechanical advantage of a pulley is the ratio of the output force to the input force.
Mechanical advantage = output force / input force
Substituting:
0.48 = output force / 10
Output force = 4.8 N
how is cholera more of a result of politics, socio-economic conditions and infrastructure than biology?
Answer: Vibrio cholerae is a natural inhabitant of the aquatic environment, which with ... infrastructures aiding in mixing of overflowing sewers with flood waters, result in an ... temperature and likelihood of an outbreak of cholera were then determined. ... Figure 4 shows that about 50% or more cholera outbreaks
Explanation:
Los organismos sencillos como las bacterias, los protozoos, las algas y los hongos no tienen sistema especializado para la excreción, la excreción se efectúa por difusión y transporte activo a través de
Answer:
Por difusión.
Explicación:
Los organismos simples como las bacterias, los protozoos, las algas y los hongos no tienen un sistema de excreción especializado. Hicieron la excreción a través del proceso de difusión en el que los materiales se mueven de la región de alta concentración a la región de menor concentración. Debido a esta difusión, hay una gran cantidad de material de agua presente, por lo que el material de desecho se mueve desde el interior del cuerpo al entorno exterior a través de la membrana presente alrededor de su cuerpo y este proceso de difusión también se utiliza para la absorción de nutrientes.
what’s unpopular information or least know information about immune system??
Answer: Stress can affect the way your immune system works.
Explanation: Stress can lead to increased levels of cortisol
Ribosomes are only found in prokaryotes.
True
False
Answer:
False
Explanation:
They're also found in eukaryotes.
Is lettuce a leaf plant?
Answer:
yes.
Explanation:
NO LINKS PLEASE
Which two scientists used x-ray diffraction to try to determine the 3-dimensional structure of DNA?
Answer:
The discovery of the Double Dna Helix was done by Watson and Crick.
Answer:
Chargaff's realization that A = T and C = G, combined with the vital work of X-ray crystallography by English researchers Rosalind Franklin and Maurice Wilkins, contributed to the discovery of Watson and Crick a three-dimensional, two-helical DNA model.
Explanation:
When warm air exists above cold air, thereby trapping the cold air, this is referred to as a __________
Question 2 options:
Altitude inversion
Temperature inversion
Convection cell
Heat gradient
Answer:
I think it's temperature inversion
But not sure....
Answer:
temperature inversion
Ferns have vascular tissue, an adaptation to life on land, but they have an ancestral reproductive trait that tends to limit them to moist habitats. What is it?
Answer:
The correct answer is - flagellated sperm.
Explanation:
In ancestral trait that is flagellated sperm in ferns that were limited to moist habitat has sperms that must swim to the eggs. This is why ferns often require splashing water for the movement of sperm to points near female gametangia during reproduction.
Fern now adapted the vascular system to get life on the life and they are not limited to the water bodies, however, flagellated sperm is the ancestral reproductive trait.
What are the 2 jobs of DNA polymerase?
Answer:
Forms new strands of DNA and forms bonds between nucleotides it also has proofreading abilities
What type of bonds are found between the nitrogen bases?
A. Hydrogen bonds
B. covalent bonds
C. peptide bonds
Answer:
A. Hydrogen bonds
Explanation:
The nitrogen bases are held together by hydrogen bonds.
The majority of nitrogen fixation happens when _____ converts atmospheric nitrogen(N2) into ammonia(NH3).
1. Fungi
2. Plants
3. Bacteria
Answer:
3.bacteria
Explanation:
The majority of nitrogen fixation happens when bacteria converts atmospheric nitrogen(N2) into ammonia(NH3).
hope it is helpful to you
The majority of nitrogen fixation happens when bacteria convert atmospheric nitrogen (N2) into ammonia (NH3). Bacteria live in symbiotic associations such as Rhizobium, but some live freely and fix nitrogen.
How is atmospheric nitrogen fixed?The atmospheric nitrogen is fixed by bacteria, which convert the atmospheric nitrogen into ammonia. There are many bacteria involved in this process.
Some bacteria live in symbiotic relationships with the roots of legume plants and capture nitrogen. Example: Rhizobium converts the nitrogen into ammonia, and the nitrogen enters living creatures when they eat the legumes. The leguminous plant makes the soil more fertile due to this process.
This process is aided by bacteria such as Azotobacter and Clostridium. Azotobacter is an aerobic bacteria, while Clostridium is an anaerobic one. The nitrogen is important for living organisms, as nitrogen is important for DNA, RNA, and protein synthesis.
Hence, Bacteria is the correct answer, as bacteria convert the atmospheric nitrogen (N2) into ammonia (NH3). option 3 is correct.
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The chart lists coordinates that describe the locations of
four cities.
City
Location
Kinshasa, Democratic Republic of the Congo 4° S/15° E
Addis Ababa, Ethiopia
9°N/39°E
Lagos, Nigeria
6°N/3° E
Oran, Algeria
35° N/0°W
Which city listed in the chart is farthest south?
Answer:
c.
Explanation:
i took the test
North Carolina has more wind off its shore than any other Atlantic Coast state. How could this resource be best utilized to reduce carbon emissions and provide cleaner energy for the state?
Answer:
C. Offshore wind farms could be constructed to generate wind energy, which reduces fossil fuel use throughout the state.
Explanation:
Option C is the correct answer.
Actually, wind energy is another alternative to fossil fuel. If North Carolina has more wind off its shore, then it is best to utilize it to reduce carbon emissions. It will help produce cleaner energy for the state.
So, the best way it can be utilized to reduce carbon emission is by constructing offshore wind farms in order to generate wind energy. This wind energy will help to reduce fossil fuel emissions.
Answer:
C. Offshore wind farms could be constructed to generate wind energy, which reduces fossil fuel use throughout the state.
Explanation:
Wind power is an excellent option for North Carolina homes, farms, businesses, schools, and utilities interested in producing clean, independent electricity.
Which type of selection occurs when a population experiences a shift in diversity toward the larger organisms?
stabilizing selection
directional selection
disruptive selection
adaptive selection
Answer:
Directional selection
Explanation:
When a population experiences a shift in diversity toward the larger organisms, it is directional selection.
What is directional selection?The term directional selection has to do with a type of selection in which the specie tend towards one side of the population mean.
Therefore, when a population experiences a shift in diversity toward the larger organisms, it is directional selection.
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Is an adaptation on one organism necessarily useful on another? Explain with examples.
Answer:
Do you mean one organisms offspring or same species?
which of the following is the best definition of Technology?
A. the most recent electronic devices.
B. The scientific process
C. The pursuit of scientific knowledge.
D. Practice applications of scientific knoledge.
Answer:
I believe its D, technology is to make life easier with new resources, so using that definition, I think that D falls under it
Explanation:
The best definition of technology is the practice applications of the scientific knowledge. The correct option is D.
What is Technology?Technology involves the practical use of scientific knowledge to create tools, machines, and systems that improve our lives and solve problems. It is not limited to just electronic devices, but encompasses a wide range of fields including engineering, medicine, and agriculture.
Technology is the means through which we put scientific knowledge to use. It encompasses both tools (like computers) and methods (like how we make computer chips), as well as both. Although the majority of contemporary technology is electronic, this does not mean that all technology is.
While the pursuit of scientific knowledge is important, it is the application of that knowledge that defines technology.
Therefore, the correct option is D.
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Two students are making models of
cells in plants and animals. They
choose an expanding and shrinking
rubber band to show how one type of
cell acts. Which type of cell does the
A
rubber band best model?
O A. Muscle cells
O B. Epithelial cells
O C. Dermal cells
O D. Guard cells
O E. Nerve cells
HINT
SUBMIT
Answer:
A. Muscle cell because muscle are actualy the most attractive cells in the body most especially men/boyz
Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar.
The following chemical equation shows the combustion of ethane. Balance the equation by filling in the coefficients.
C2H6 +
O2 →
CO2 +
H2O
Answer:
2,7. 4,6
Explanation:
2 C2H6. +. 7O2. ==. 4. CO2. +. 6 H2O
Note. In such questions balance C first then H and finally O
It will be easier
Người ta có thể tạo ra những cơ thể mới có kg khác với dạng bố mẹ sẵn có. Em hãy đề xuất 4 cách để tạo ra cá thể như vậy
Answer:
plz ask questions in English
What do you think selectively permeable means?
A. The membrane lets nothing in or out.
B. The membrane lets certain substances move across it freely, while others must move through a “gate”.
C. The membrane lets everything in and out.
Answer:
B. The membrane lets certain substances move across it freely, while others must move through a “gate”.
Explanation:
Selective permeability is a property of cellular membranes that only allows certain molecules to enter or exit the cell. This is important for the cell to maintain its internal order irrespective of the changes to the environment. For example, water, ions, glucose and carbon dioxide may need to be imported or exported from the cell depending on its metabolic activity. Similarly, signaling molecules may need to enter the cell and proteins may need to be released into the extracellular matrix. The presence of a selectively permeable membrane allows the cell to exercise control over the quantum, timing and rate of movement of these molecules.
B. The membrane lets certain substances move across it freely, while others must move through a “gate”.
Which of the following statements is not an example of evolution that has resulted from human activity? Group of answer choices Some insect species are now resistant to pesticides. Many strains of bacteria are now resistant to some commonly used antibiotics. Like certain other crops, domesticated strawberries are larger than wild strawberries. Because of hunting, organisms such as bears and wolves are fewer in number.
Answer:
The correct answer is - Because of hunting, organisms such as bears and wolves are fewer in number.
Explanation:
Evolution is the change in the characteristics or traits of the species that are developed over several generations by the process called natural selection. Natural selection is the process of transferring the genes or traits that help in the survival of organisms.
Among the given statements all the are the example of the evolution that is resulted from human activity except the extinction or fewer the bears and wolves due to hunting. Other examples are showing evolution as they developed characteristics over generations.
Where is the DNA found in Eukaryotic cells?
A. nucleus
B. rough ER
C. mitochondria
Answer:
A NUCLEUS
Explanation:
Answer:
A. nucleus
Explanation:
The DNA is found in the nucleus of the Eukaryotic cells.
Leukemia is a type of cancer that prevents a person from being able to make new blood cells. What part of the body develops this kind of cancer? O A. Kidney O B. Brain O C. Liver O D. Bone marrow SUBMIT PREVIOUS.
Answer:
D. Bone
Explanation:
Leukemia, a type of cancer found in your blood and bone marrow, is caused by the rapid production of abnormal white blood cells. The high number of abnormal white blood cells are not able to fight infection, and they impair the ability of the bone marrow to produce red blood cells and platelets.
I’ll mark as brainliest pls help!
Answer:
the answer should be rrxrr
Explanation:
a wrinkled pod is a recessive trait which is represented by "r"
When he discovered that blood is pumped from the heart to the body, and back to the heart, ________ had a difficult time getting people to accept his discovery because it went against the ancient teachings of _______.
Answer:
1 - William Harvey
2 - Galen
Explanation:
Galen, who postulated that blood was produced continuously in the liver and absorbed by the body (not recirculated), served as the Roman emperor's personal physician. For 1500 years, his theories about human anatomy went unquestioned until Harvey's proposal in 1628.
When he discovered that blood is pumped from the heart to the body, and back to the heart, William Harvey had a difficult time getting people to accept his discovery because it went against the ancient teachings of Galen.
What is the composition of blood ?blood is a fluid connective tissue contain blood cells and an plasma.
The major functions include transportation and providing immunity and protection.
The major components include plasma primary constituent of blood contain 55 percent of blood volume. It is made up of water, salts, proteins, and blood cells.
Red Blood Cells which determine blood type, biconcave in shape, enucleated contain millions of hemoglobin molecules.
White Blood Cells act as defensive cell in the immune system and lymphatic system against infection.
Platelets are formed from pieces of cells present in the bone marrow called megakaryocytes.
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