please what are the major branches of biology
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Answer:
Botany, zoology, and microbiology.
Explanation:
Related Questions
right now humans are making more co2 faster than _______ can absorb it.
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have you ever heard of something called a p l a n t?
why does protease digest protein but not fat?
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Stomach acid helps protease enzymes to destroy harmful microorganisms that may be present in the food. Fats and oils, or lipids, provide insulation and an energy store for our bodies. Helped by bile from the liver, lipase enzymes break down the lipids into fatty acids and glycerol, so they can be stored.
Its science! Give at least three sentences please and thank ya ill give brainliest Explain how precipitation happens. Use complete sentences and give at least two supporting details.
Answers
Answer:
Precipitation happens as a result of water evaporating and condensing. When water evaporates the water molecules transfer to a gas state into the atmosphere as water vapor. This water vapor then condenses due to cooler air temperatures because of this condensation larger water droplets form. Once these droplets become so large they can no longer be considered water vapor they will fall back down to earth. The act of these droplets falling is what is known as precipitation.
In both plants and animals, RNA contains
deoxyribose sugar, phosphates, adenine, uracil, guanine, and cytosine
ribose sugar, phosphates, adenine, thymine, guanine, and cytosine
ribose sugar, phosphates, adenine, uracil, guanine, and cytosine
deoxyribose sugar, phosphates, adenine, thymine, guanine, and
cytosine
Answers
Answer:
option (C)
Explanation:
In both plants and animals, RNA contains:
Ribose sugar, phosphates, adenine, uracil, guanine, and cytosine.
Should blue crab fishing in the Chesapeake Bay be banned?
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Blue crabs get their name from their blue-tinted claws and are very popular type of crab. Many people harvest these crabs for meat. The number of blue crabs has decreased in the Chesapeake Bay because of over- harvesting and changes to their habitat. (Then explain if you think it should be banned after knowing this information) if you don’t think it should be banned then you could talk about regulations and licensing for crab fishing, or if you think it should be banned you could explain the effects of habitat loss on the crabs.
why is cell called the fundamental unit of life
Answers
Answer:
Cell is called the Fundamental Unit of Life Because all basic metabolism activity starts from the cell. Inside the cell, energy is produced , food is stored and many more activities take place
it is structural and functional unit of living beings
it includes all the activities of cells
it is there in each and every life process
in which habitat should one find snapping shrimp most closely related to shrimp that live in habitat a4?
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The habitat should one find snapping shrimp most closely related to shrimp that live in habitat A4.
The snapping shrimp should be most closely related to shrimp that live in habitat A4, which is described as having lots of algae and plant life but no coral or seaweed. The reason why is that snapping shrimp are found in a variety of marine environments, but they typically prefer shallow-water habitats that have lots of structure and plenty of hiding places.
Algae and plant life provide the ideal conditions for snapping shrimp because they can easily burrow into the sand or mud and create a safe haven where they can rest and hide from predators. Coral and seaweed may provide some structure, but they do not offer the same level of protection as algae and plant life. Therefore, the snapping shrimp should be most closely related to shrimp that live in habitat A4.
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PLEASE HELP! WILL AWARD BRAINLIEST!
Discuss how the structures of the different chambers and vessels of the heart relate to their functions.
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Answer:
Found this off of google, "The heart works as two pumps, one on the right and one on the left, working simultaneously. Blood flows from the right atrium to the right ventricle, and then is pumped to the lungs to receive oxygen. From the lungs, the blood flows to the left atrium, then to the left ventricle.:
Hope this helps!
Have a great day and stay safe! :) :D
What do breaking waves transfer to the shore/land
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Answer:
WaveLength
Explanation:
move sand from the beaches on shore to bars of sand offshore
Breaking waves occur when the water depth becomes shallower than the wave base, causing the wave to slow down and the wave height to increase. This increase in wave height results in the transfer of energy from the wave to the shore/land. As the wave breaks, it can also cause erosion and transport sediment along the shoreline.
Therefore, the correct answer is D) energy.
The rate of transpiration decreases with?
Answers
Answer:
yo
Explanation:
555555555589888888
Who is susceptible to infectious diseases for which vaccinations are available?
a. anyone who is not vaccinated
b. very young or very old people
c. people in developing countries
d. people in developed countries
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Answer:
Those most susceptible to infectious diseases and for whom vaccination is available are very young or very old people.
Explanation:
Infectious diseases tend to occur more frequently and relatively severely in the extreme age groups, i.e., in childhood and old age.
Although everyone is susceptible to acquiring an infectious disease, vaccines will always be available for very young and very old people, as they are considered to be at higher risk of infection.
Vaccines are preparations that contain fractions of microbes, without the capacity to produce disease, to stimulate the immune system, and to be able to fight the infections they produce.
With regard to the other options, which are not correct:
a. Anyone who is not vaccinated : anyone can be vaccinated, especially if they have not been vaccinated, but the most susceptible are given priority.
c and d. People in developing or developed countries must receive the vaccines established by their health system, always guaranteeing the immunization of the most susceptible.
Answer:
very young or very old people
4.__________ ____________
is a property of the plasma
membrane that allows it to control what enters and leaves the cell.
Answers
Answer: Selective Permeability
it’s number 2
according to the cladogram of mammals, which two groups of animals have a more recent common ancestor?
A. carnivorans and chiropterans
B. cetaceans and hyracacoideans
C. dermopterans and carnivorans
D. rodentians and lagomorphans
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Answer: The correct answer is choice D.
Explanation: We can see on the cladogram that these two are in the same branch and lead to the same common ancestor. These two happen to share the most recent common ancestor, however.
Which statement best describes how enzymes affect chemical reactions?
O A. Enzymes provide the signal necessary to stop chemical reactions.
O B. Enzymes increase the rate at which chemical reactions occur.
O C
Enzymes change the lyne of product formed during chemical reactions.
O D. Enzymes provide the energy needed to start chemical reactions.
Answers
Answer:
The correct option is A) Enzymes lower the activation energy of a reaction.
Explanation:
In the absence of lactose, the genes of the lac operon are:
a. transcribed.
b. not transcribed.
Operons:
Operons are units of transcriptional regulation in prokaryotic organisms. They generally contain several related genes, all controlled by a single operator and promoter. These genes are all expressed at the same time, turning on an entire metabolic pathway at once.
Answers
In the absence of lactose, the genes of the lac operon are not transcribed, which is option b.
What is the lac operon?A lac operon is a group of genes in E. coli that is responsible for lactose metabolism. When lactose is present in the cell, it acts as an inducer and activates the transcription of the genes in the lac operon. This allows E. coli to utilize lactose as a source of energy.
How does the lac operon work?The lac operon is composed of three structural genes (lacZ, lacY, and lacA), a promoter, an operator, and a regulatory gene (lacI). The structural genes encode proteins that are responsible for lactose metabolism. The promoter is a region of DNA that initiates transcription.
The operator is a region of DNA that controls the expression of the structural genes. The regulatory gene produces a protein that binds to the operator and controls the expression of the structural genes.
When lactose is absent, the regulatory protein (lacI) binds to the operator, preventing the transcription of the structural genes. This is because the lacI protein is a repressor, which means that it inhibits transcription. In the absence of lactose, the lacI protein binds to the operator and prevents RNA polymerase from binding to the promoter. As a result, the structural genes are not transcribed.
When lactose is present, it binds to the regulatory protein (lacI) and changes its conformation. This prevents the lacI protein from binding to the operator, allowing RNA polymerase to bind to the promoter and transcribe the structural genes. The end result is the production of proteins that are responsible for lactose metabolism.
Therefore, the correct option is option a.
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(30 points) Mosquitoes can carry and transmit many diseases to humans. In the past, the insecticide DDT was heavily used to reduce mosquito populations in order to reduce instances of disease transmission. However, after some time, mosquito populations developed a resistance to DDT, which made the DDT less effective in reducing mosquito populations.
Based on what you’ve learned about natural selection, in 3–5 sentences, describe how mosquitoes may have come to develop this resistance.
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Mosquitoes resistant to DDT are also immune to mosquito net insecticide. A single genetic mutation causes resistance to DDT and pyrethroids according to new research in the diary Genome Biology.
What is DDT and why was it banned?Dichlorodiphenyltrichloroethane (DDT) is an insecticide used in agri company . The United States prohibited the use of DDT in 1972. Some nations outside the United States still use DDT to manage of mosquitoes that laid malaria.
Thus, Mosquitoes resistant to DDT are also resistant to mosquito net insecticide.
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Mosquitoes may have developed resistance to DDT through the process of natural selection. Initially, within a mosquito population, there may have been genetic variation in their response to DDT exposure.
Some mosquitoes may have possessed genetic traits that made them more tolerant to the effects of DDT, while others may have been more susceptible. When DDT was heavily used, the susceptible mosquitoes were killed, while the tolerant ones survived and reproduced. Over time, this led to an increase in the proportion of mosquitoes with the genetic traits for DDT resistance, as they were the ones passing on their genetic information to the next generation. This process of natural selection favored the survival and reproduction of mosquitoes with DDT resistance, resulting in the development of a resistant population.
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Complete the following table on the different types of microscopes.
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Answer:
A compound light microscope is a microscope with more than one lens and its own light source. In this type of microscope, there are ocular lenses in the binocular eyepieces and objective lenses in a rotating nosepiece closer to the specimen.
The scanning electron microscope (SEM) produces images by scanning the sample with a high-energy beam of electrons. As the electrons interact with the sample, they produce secondary electrons, backscattered electrons, and characteristic X-rays.
Explanation:
summarize what hypothesis means?
Answers
Answer: an assumption, an idea that is proposed for the sake of argument so that it can be tested to see if it might be true.
Explanation:
During what part of the m phase are chromatids separated and sorted so that each daughter cell eventually receives the same complement of chromosomes?.
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Answer: During anaphase, sister chromatids are separated and pulled to opposite ends of the cell.
placental mammals give birth to more fully developed offspring than marsupial mammals and therefore have a greater chance of offspring survival. this helps to explain why placental mammals from north america displaced many native south american marsupial mammals when a land bridge formed between the two continents.
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It is true that placental mammals give birth to more fully developed offspring than marsupial mammals and therefore have a greater chance of offspring survival. This helps to explain why placental mammals from North America displaced many native South American marsupial mammals when a land bridge formed between the two continents.
Therian mammals called placental mammals have developing placentas during pregnancy. The foetus is fed by the placenta as it develops inside the mother's uterus. Mammals with placenta give birth to children that are generally mature and large. Mammals that carry babies are the majority.
Hence, placental mammals give birth to more fully developed offspring than marsupial mammals and therefore have a greater chance of offspring survival.
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4. Assertion A: Prokaryotes are identified by the membrane bound cell organelles. Reason R: Prokaryotes are considered as the primitive forms of life. *
a) Both A and R are true and R is the correct explanation of A.
b) Both A and R are true but R is not the correct explanation of A.
c) A is true but R is false.
d) A is false but R is true.
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Answer:
d) A is false but R is true.
Explanation:
Prokaryotes are group of organisms that do not possess a membrane bound nucleus or any other membrane bound organelle in their cell e.g. mitochondria, endoplasmic reticulum etc. They lack such organelles.
However, they are truly considered as a primitive life form; much more primitive than eukaryotic organisms. Examples of prokaryotes are bacteria, archeae etc. Based on the above explanation, it is clear that the assertion (A) in this question is FALSE but the reason (R) is TRUE.
When does a population experience logistic growth?
Answers
Answer:
When resources are limited
Explanation:
Where are sertoli cells located or housed?
a. epididymis
b. seminiferous tubules
c. müllerian ducts
d. leydig cells
e. ductus deferens
Answers
Sertoli cells are located or housed in the seminiferous tubules.
Sertoli cells have various important functions, including:
Nourishment: They create a specialized microenvironment within the seminiferous tubules, supplying nutrients, growth factors, and other essential substances to developing sperm cells.
Sperm Maturation: Sertoli cells help facilitate the maturation of sperm cells, aiding in the process of sperm development and the acquisition of motility and fertility.
Sperm Protection: They form tight junctions with neighboring Sertoli cells, creating a blood-testis barrier that protects developing sperm cells from the immune system and harmful substances.
Hormone Secretion: Sertoli cells secrete various hormones and signaling molecules that regulate spermatogenesis, such as inhibin, which helps regulate the production of follicle-stimulating hormone (FSH) from the pituitary gland.
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Scientists who study biogeochemical cycles often use the term fixation to describe converting an element from gaseous form in the atmosphere to solid form in the biosphere. For example, in the nitrogen cycle, bacteria are said to fix nitrogen by converting N2 gas into nitrates and nitrites in the soil that are later used to make organic macromolecules such as proteins and nucleic acids. There are many processes involved in cycling carbon, but only one is able to fix carbon from its gaseous form in the atmosphere to solid form in the biosphere. Which process performs carbon fixation
Answers
Answer:
Photosynthesis
Explanation:
Carbon fixation refers to the process by which elemental carbon in gaseous form in the atmosphere is converted to a solid form in living organisms. It is part of the larger process known as the carbon cycle. The carbon cycle is a very important cycle which involves the different steps by which carbon is exchanged between living organisms and their environment. The carbon cyclemis divided into the biological carbon cycle and the biogeochenpmical carbon cycle. The biological carbon cycle is the rapid exchange of carbon among living things while the biogeochemical cycle refers to the much slower cycle by which carbon is stored and released from carbon reservoirs in the environment.
In nature, carbon fixation occurs in the process of photosynthesis. During photosynthesis, green plant ( autotrophs) in the presence of sunlight as an energy source uses carbon present in air as carbon dioxide together with water vapour to produce organic biomolecules known as simple sugars which are also stored as starch. The products of photosynthesis are then used by heterotrophs, to return carbon in the form of carbon dioxide back to atmosphere.
After depolarization of a nerve cell, what event restores the resting potential?.
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After depolarization of a nerve cell, the restoration of the resting potential occurs through the process of repolarization.
During the depolarization stage, a nerve cell's electrical potential becomes less negative, moving towards a positive charge, but during repolarization, the cell's electrical potential returns to its original, negative resting state.
A nerve cell is made up of ions, and the concentration of these ions is critical for the cell to be able to communicate messages effectively. When a nerve cell is stimulated, sodium ions rush into the cell, causing depolarization.
The depolarization stage is brief and is rapidly followed by repolarization, where potassium ions leave the cell, allowing the negative resting potential to be reestablished.
After depolarization of a nerve cell, the process of repolarization restores the resting potential. Repolarization is an important process because it ensures that the nerve cell is ready for the next signal to arrive. The answer to this question is the process of repolarization.
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8. Calculate Cell A normally divides once every two days. If its control mechanisms aren't working correctly, cell A divides six times faster than normal. How many hours does it take cell A to divide when its control mechanisms aren't working correctly?
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Answer:
becuase cell A is not aFFECTED by a normal cell
Explanation:
After Thanksgiving, Kevin and Gamal use the turkey’s wishbone to make a wish. If Kevin pulls on it with a force 0.17 N larger than the force Gamal pulls with in the opposite direction and the wishbone has a mass of 13 g, what is the wishbone’s initial acceleration
Who were the representatives
sent to work on the deal?
Answers
Answer:
Peace Negotiations
After Yorktown, the Continental Congress appointed a small group of statesmen to travel to Europe and negotiate a peace treaty with the British: John Adams, Benjamin Franklin, John Jay, Thomas Jefferson and Henry Laurens.
2. Describe the permeability of cell membranes. How to substances cross cellmembranes? Utilize the terms bi-polar, semi-permeable, diffusion, active transport, membrane
proteins, endocytosis, exocytosis, vesicles, phagocytosis, pinocytosis, etc. (This should be 3-4paragraphs long)
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The permeability of a cell membrane simply means the ability of the cell membrane to allow solutes and solvents diffuse or pass through it
In biology, substances moves in and out of cells through semi-permeable membranes of the cell in a function of different metabolic processes such as:
Osmosis: This is the movement of substances from a region of low concentration to a region of high concentrationDiffusion: This is the movement of substances from a region of high concentration to a region of low concentrationPhagocytosis: This involves the movement of substances through phagocytic bacteriaEndocytosis: This involves the movement of substances into the cellExocytosis: This involves the movement of substances outside the cell environmentPinocytosis and othersSo therefore, thee permeability of a cell membrane simply means the ability of the cell membrane to allow solutes and solvents diffuse or pass through it
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What specific type of symmetry does a sea star have?
Answers
Answer:
radial symmetry
Starfish have radial symmetry with each arm portion of the starfish identical to each of the other regions
Explanation:
mark brainliest please
Answer:
A typical Star fish has five side of symmetry with no clear head the star fish can move in any directions and it is led by anyone of its five arms . Starfish has a radial symmetry .
I guess this might help u out
Which of the following statements most directly describes the shared biological mechanisms between quorum sensing in bacteria and epinephrine stimulation in humans?
Answers
Answer: A.
Explanation:
The concept of biofilm conveys the fact that bacterial cell to cell connection results in the formation of a film via cell signaling pathway this helps in cell to cell coordination which can further help in survival of the bacterial species during adverse condition a layer can shield the overall impact of the external environment in the form of saline condition, extreme heat or cold or any other condition. Epinephrine stimulation is similar to biofilm in this also genetic material is passed across the cell membrane to induce cell signaling between members of the similar kinds of cells to attain a shielding effect.
Answer:
The answer is B, in both humans and bacteria....
Explanation:
I just took the test and got it right