The correct answer is option B that is, transmitting electron microscope.
The core organelles comprise the mitochondria, nucleus, endoplasmic reticulum, and various others. The microscopes play an essential function in understanding organelles.
Although the majority of the organelles are not clearly observed with the help of light microscopy, and those that can be seen like nucleus are not studied in detail, as their size comes nears to the resolution limit of the light microscope. The complete composition of organelles had only become clear after the discovery of a transmission electron microscope.
To obtain a detailed view of the nuclear pores, a Scanning Electron Microscope would be the best choice as it provides high-resolution, three-dimensional images of specimen's surface.
Explanation:
The cell biologist should choose the Scanning Electron Microscope (SEM) to observe the surface of a nucleus in detail. This type of microscope allows for high-resolution, three-dimensional images of a specimen's surface topology, which will efficiently allow for a detailed view of nuclear pores. In comparison, a Light Compound Microscope or a Dissecting Microscope cannot provide the resolution at the molecular level needed to observe nuclear pores. A Transmitting Electron Microscope (TEM), on the other hand, would not be optimum for viewing the surface of a specimen but instead provides detailed images of the interior of a specimen.
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Which measurement do geologists use to find the absolute age of once-living things?
amount of decayed daughter elements
total number of half-lives for the element potassium
age of ancient rocks located near the remains
amount of carbon-14 and nitrogen-14 in the remains
Answer:
By calculating the amount of decayed daughter elements.
Explanation:
The age of the rock in years is considered as its absolute age. The absolute age is found by determining the concentration of some radioactive elements in the rock. At the time of the formation of rock, small concentrations of radioactive elements get comprised usually. With the passing of time, the parent radioactive elements go through decay process at a regular rate into non-radioactive daughter elements. By calculating the rate at which decaying of a parent element takes place and then by finding the proportion of parent element to the daughter element in the rock, the age of rocks in years can be calculated.
describe what has happen for two species with different numbers of chromosomes to interbreed and produce a fertile hybrid. will this hybrid be able to interbreed with either of its parents? why? how common is this in nature?
Answer: Two species with different number of chromosomes can interbreed but chances of getting fertile offspring is low. Example horses have 32 pair of sex chromosomes and in donkey there are 31 pair of sex chromosomes. The resultant hybrid is mule which remains sterile because of the presence of one extra chromosome poses a problem when comes in distribution of sex chromosomes. This hybrid will not be able to interbreed with either of it's parents. This is not common in nature as two different species only interbred when they find common sexual similarity.
Which of the following describes the function of proteins in our body?
Provide structure and support allowing our body to move
Provide immediate energy storage
Proteins like enzymes help break down and put together large molecules
Both A and C
Proteins provide structure and support to our bodies and function as enzymes that assist in crucial biochemical reactions.
Explanation:Proteins play a crucial role in bodily functions, performing diverse tasks. A primary function of proteins is in the structure and support of our bodies. This is illustrated by proteins like collagen and keratin, which contribute to the structure of skin, hair, nails, and tissues, enabling our body to move. Additionally, some proteins function as enzymes, assisting in crucial biochemical reactions. They can help in breaking down and combining large molecules, which are essential to many processes in the body such as digestion and DNA replication.
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What process does "Z" in the diagram represent? *
1 point
Fermentation
Photosynthesis
Aerobic Respriation
Anaerobic Respiration
The process does "Z" in the diagram represent Anaerobic Respiration. Therefore, Anaerobic Respiration is correct.
Anaerobic respiration is a metabolic process that occurs in the absence of oxygen, typically in microorganisms, certain cells, and under oxygen-deprived conditions.
While aerobic respiration is the more efficient way to generate energy in the presence of oxygen, anaerobic respiration provides a quick, but less efficient alternative.
In anaerobic respiration, glucose or other organic compounds are partially oxidized to produce energy.
The process begins with glycolysis, which takes place in the cytoplasm of cells.
During glycolysis, one molecule of glucose is broken down into two molecules of pyruvate, generating a small amount of ATP (adenosine triphosphate) and NADH (nicotinamide adenine dinucleotide).
In the absence of oxygen, pyruvate is further metabolized through various pathways, depending on the organism.
For example, in lactic acid fermentation, pyruvate is converted into lactic acid.
In alcoholic fermentation, found in yeast and some bacteria, pyruvate is converted into ethanol and carbon dioxide.
Anaerobic respiration has its limitations. It generates significantly less ATP compared to aerobic respiration, leading to a buildup of metabolic byproducts, such as lactic acid or ethanol.
This can lead to fatigue, muscle soreness, and other adverse effects in organisms relying on anaerobic pathways for prolonged periods.
While anaerobic respiration is less efficient, it can be crucial in situations where oxygen availability is limited, such as during intense exercise or in certain microbial environments.
This process is essential in fields ranging from microbiology to sports science, as it impacts both human health and various industrial processes.
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what is microbes and list three types of microbes
What are Microbes?
They are Microorganisms that are too small too see with the naked eye. (without a microscope) They are found on every surface and in every habitat around the world that includes out own body. They are categorized into five major groups: Bacteria, Viruses, Algae, Fungi, and last but not least Protozoa.
How do you think cells reproduce to make more cells?
Which macromolecule is involved in nearly every function in the human body?
A. lipid
B. nucleotide
C. protien
D. carbohydrate
The correct answer is protein.
Protein being the macro molecule is involved in almost every function of the body. Some of the important functions of the protein in the body are given below.
Like our nails and hair are made of keratin protein.All the enzymes that is involved in the metabolic reactions of the body are protein.As like carbohydrate and fat, protein has no reservoir in the body so it is taken by the body and is utilized by the body without being stored.Which components of the atom are found outside of the nucleus?
Question 2 options:
protons
electrons
neutrons
All are found in the nucleus.
Answer:
Electrons
Explanation:
deposits of economic minerals might be associated with which of the following.
A.an oceanic plate and a continental plate moving together
B.two tectonic plates moving apart
C.two sections of Continental crust moving together
D.two tectonic plates moving past each other
Deposits of economic minerals which are associated with two tectonic plates which are moving apart.
Economic geology is much concerned with some earth materials whereby they can be industrial and economic purposes.
Examples of mineral metallic deposits include mineralogy, geophysics, and petrology.
You find a piece of rock. It crumbles easily and has little bits and pieces of shells in it. Is this an igneous, metamorphic, or sedimentary rock?
What allows carbon to bond with up to four other atoms at a time and form the macromolecules that are essential to life ?
Eight valence electrons need to be present in carbon's outer shell, when considering covalent bonding. The three major types of covalent bonds are single, double, and triple bonds. A carbon atom can form the following bonds: Four single bonds.
Carbon's ability to form four covalent bonds allows it to create complex macromolecules that are vital for life. It shares electrons in its outer energy level, forming stable bonds with many different elements, including other carbon atoms.
Explanation:Carbon atom is unique because it can form four covalent bonds with other atoms, including other carbon atoms. These bonds are formed by sharing electrons in its outer energy level, which allows carbon to form strong, stable links with many elements. Carbon's ability to form four bonds makes it incredibly versatile, and it allows it to be the central atom in the vast majority of biological macromolecules. These macromolecules include carbohydrates, lipids, proteins, and nucleic acids, all of which are essential to life processes.
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Samir volunteered in a psychology study of emotion. If Samir were injected with ________, he would experience feelings of arousal.
Answer:
epinephrine
Explanation:
Epinephrine is also called as adrenaline. It is both a neurotransmitter and a hormone. The adrenal glands produce the hormone epinephrine that can also be used as a drug for various important functions.
If Samir were injected with epinephrine, he would experience rapid rush of adrenaline in his body and quick blood and oxygen flow throughout his body which will cause a feeling of arousal.
Samir was injected with epinephrine then he would experience feelings of arousal.
Further Explanation:
The adrenal gland is an endocrine gland which secretes aldosterone and cortisol hormone. This gland lies above the kidney.
Epinephrine is a hormone also known by the name adrenaline. Epinephrine is released in the bloodstream in case of anger and fear. It causes an rise in heart rate, blood pressure, and muscle activity.
The function of epinephrine are :
• To treat anaphylaxis disease.
• To treat cardiac arrest.
• To treat asthma.
Epinephrine is synthesized from tyrosine in our body through the following steps:
• Tyrosine is converted into dopamine.
• Dopamine is converted into nor-epinephrine.
• Then nor–epinephrine converted into epinephrine.
Effects of epinephrine are;
• Activates the reticular formation of the brain.
• To increase the heart rates.
• To relaxe the blood vessels and decrease the blood flow resistance.
Epinephrine is a hormone also act as a neurotransmitter. Thus, the nervous system is altered when a person is injected with epinephrine and a feeling of arousal is provoked.
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1. Learn more about collagen disease https://brainly.com/question/2947334
2. Learn more about heart functions https://brainly.com/question/7301375
3. Learn more about types of risky behavior https://brainly.com/question/4636541
Answer Details:
Grade: High School
Subject: Biology
Chapter: Control and coordination
Keywords:
Epinephrine,nor-epinephrine, heart disease, neurotransmitter, hormone, tyrosine, blood vessels, heart-rate, cortisol, cardiac arrest, anaphylaxis.
An organism which must obtain its food from other organisms is called
Carnivores, they eat other animals to obtain their food.
When people get their hair chemically straightened, one chemical is put on the hair to break the disulfide bond that give the hair strands their shape and a second chemical is used to reform the disulfide bonds to hold the hair in a new position. what level of protein is affected by these processes. why doesnt the hair stay straight forever after treatment
Chemically straightening hair changes the shape of disulfide bonds, which alpha keratin protein; this is the second protein structure. However, as the hair continues to grow out, this keratin protein grows with it, thus outlasting the effects of the chemicals which change the shape of the protein.
What was sir isaac doing when an apple fell on his head which would eventually lead to the theory of gravity?
Answer:
What go's up must come down
Which technology are environmental scientists using to track gray wolves by their individual howls
A. Gel electrophoresis
B. Photography
C. Biostimulation
D. Acoustics
Answer:
D. Acoustics
Explanation:
Environmental scientists have some difficulty identifying gray wolves, because wolves tend to move away from humans. For this reason, scientists have developed a technique for identifying wolves by their individual howls. This technique is acoustics.
When they occupy a territory, they have a natural tendency to signal to other wolves. Using acoustics, scientists can record a wolf's howl and release this recording in the forest, when it does, other wolves can respond to the recording's howl and this will allow scientists to approach the territory where the gray wolves are .
Option D. Environmental scientists use acoustics to track individual gray wolves by their unique howl patterns. This method is part of a suite of advanced biologging devices that have transformed wildlife conservation fieldwork. These technologies enable the detailed monitoring of animal movements and behavioral patterns.
Environmental scientists tracking gray wolves by their individual howls are using acoustics. They take advantage of the unique acoustic patterns in each wolf's howl to identify and monitor individual wolves. This method is part of a broader range of wildlife tracking technologies that have benefited from advancements like miniaturization and cost reduction.
These biologging devices, which can include radio telemetry and GPS tags, allow scientists to overcome previous logistical constraints associated with conservation fieldwork. By combining such tracking data with remotely sensed images of vegetation quality, scientists can study not only the movements of the animals but also understand the reasons behind those movements, such as changes in food availability.
Therefore, the correct answer is D. Acoustics.
A scientist uses materials in her lab to turn one piece of dna into 100 copies of the same piece what process is the scientist using
Use of restriction enzymes
Polymerase chain reaction
Gel electrophoresis
Karyotyping
Answer: The correct answer is- Polymerase chain reaction.
Polymerase chain reaction is a technique in molecular biology that is used to produce multiple copies of a piece of DNA molecule through multiple cycles of three stages that are-
1) Denaturation- The two DNA strands are separated ( so that template DNA are exposed) at higher temperature.
2) Annealing- Primers ( forward and reverse) are attached to the template DNA.
3) Extension- New DNA strand is synthesized using enzyme Taq polymerase that adds dNTPs ( deoxyribonucleoside triphosphate) according to the complementary sequences in the template.
Ans.
The process, which is used for the in vitro (outside an organism or in lab conditions) amplification of sample DNA molecule is known as PCR or polymerase chain reaction. With the help of PCR, a single piece of DNA can be amplified into thousands of copy within few minutes.
The PCR is divided into three steps, denaturation, primer annealing, and extension. During denaturation, the double stranded DNA gets separated to provide two template strands.
During primer annealing, small primers or oligonucleotides bind to the template DNA to start the process of polymerization. Extension involves elongation of new DNA strands by addition of nucleotides to the annealed primers.
Thus, the correct answer is option). 'polymerase chain reaction.'
what does an atomic number represent in an atom?
A. number of protons.
B. number of electrons.
C. number of neutrons.
D. number of protons and neutrons.
Pls answer!!
D. the total number of protons and neutrons.
Answer:
number of protons in the atoms nucleus
Explanation:
This black dog has the genotype of BB for fur color. The black dog mates and has puppies with a solid white dog. The white dog has the genotype bb. What is the probability that this match will produce puppies that are also white? A) 0% B) 25% C) 40% D) 50%
answer would be option - A .0%
because the BB is dominant character
Answer: 0%
Explanation:
When the black dog with genotype BB mates with a white dog of genotype bb, the cross is shown as follows:
BB X bb ----> Bb Bb Bb Bb
From the cross, it can be seen that all the progenies will have the genotype Bb.
Since B is dominant over the allele b, all the progenies with genotype Bb will have the phenotype black.
Therefore, the probability of white puppies is 0%.
I originally chose A but the answer is D, why? Please help me, I need to do corrections to get back up to an B in science, I'm at a D- rn T^T
Name the region of dna where transcription begins.
To begin transcribing a gene, RNA polymerase binds to the DNA of the gene at a region called the promoter. Basically, the promoter tells the polymerase where to "sit down" on the DNA and begin transcribing.
Transcription initiates at the promoter, a specific DNA sequence that serves as the binding site for the transcription machinery. The promoter includes the transcriptional start site where RNA polymerase binds and elements such as the TATA box, which are crucial for unwinding the DNA for transcription.
Explanation:The region of DNA where transcription begins is called the promoter. This is a specific DNA sequence that serves as a binding site for the transcription machinery, including enzymes and other proteins necessary for the process. It marks the start of a gene and thus, the initiation of transcription.
A typical promoter includes a transcriptional start site, which is the part of DNA to which RNA polymerase attaches to initiate transcription. This site is typically located upstream, or before the actual coding region of the gene. Promoters also include elements like the TATA box, a consensus sequence typically found at the -10 position within the DNA prior to the initiation site, which aids in the process of separating the DNA strands for transcription initiation.
Different genes have different promoters, which vary in sequence, but some elements are conserved, including the aforementioned TATA box and the -35 sequence. These conserved elements are crucial in determining how often a gene is transcribed and thus, its level of expression.
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A class of chemical called a neurotransmitter is important in the transmission of nerve impulses. Neurotransmitters are packaged by the cell into small, membrane-bound sacs called vesicles. Upon receiving a chemical signal, the vesicles move toward the plasma membrane and fuse with it, releasing the enclosed neurotransmitters from the terminal end of the nerve cell. Which organelle is most likely responsible for packing neurotransmitters into a vesicle?
Anton Von Leeuwenhoek
The Golgi apparatus is the organelle responsible for packing neurotransmitters into synaptic vesicles in a neuron. Small molecule neurotransmitters are packed at the presynaptic terminal, whereas neuropeptides are packed in the cell body and transported to the terminal. This packing and release mechanism is essential for nerve impulse transmission.
Neurotransmitters are crucial for the transmission of nerve impulses between neurons. These chemical messengers are synthesized within neurons and then packed into specialized structures known as synaptic vesicles. The process of packaging neurotransmitters into vesicles is typically carried out by the Golgi apparatus, which is an organelle responsible for modifying, sorting, and packaging proteins and lipids into vesicles.
Small molecule neurotransmitters are synthesized and packaged into vesicles directly within the presynaptic terminal. Meanwhile, neuropeptide transmitters are first synthesized and packaged into vesicles in the neuron's cell body and then transported to the presynaptic terminal through a mechanism called fast axonal transport. The rate of synthesis for small molecule neurotransmitters is often controlled by a rate-limiting step, while neuropeptides depend on axonal transport to reach the presynaptic terminal.
When an action potential arrives at the axon terminal, the influx of calcium ions triggers the fusion of synaptic vesicles with the plasma membrane. Consequently, neurotransmitters are released into the synaptic cleft, allowing them to bind to receptors on the postsynaptic cell and carry on the nerve impulse. The entire process is critical for communication within the nervous system and is the basis of synaptic transmission.
Study the photosynthesis model above. What is a correct assumption about the inputs and outputs of photosynthesis.
Although I see no photosynthesis model, I can assume that the correct answer is that the inputs for photosynthesis are the outputs for respiration, and the outputs for photosynthesis are the inputs for cellular respiration. Therefore, they both depend on each other to keep themselves going.
Answer:
D). sunlight is the source of energy; plant sugars are the chemical energy produced
Explanation:
took the test like 2 minutes ago and got a decent 90 on it.
Which of the following would most likely contain carbon?
trees Uranium is an element in its own right, and it only contains uranium. Water is a combination of the elements hydrogen and oxygen. Salt is a compound formed from sodium and chlorine. Carbon is found in organic substances, and trees are organic, so trees contain carbon.
Hemoglobin is a protein that binds to oxygen. It is only produced by red blood cells and it allows blood to transport oxygen throughout the body. What statement does this information best demonstrate?
A. Specialized cells that are grouped together and perform similar functions are called tissues.
B. The proteins produced by cells have structures that are related to their function.
C. Proteins with similar functions to those produced in humans can be found in other species.
D. Proteins in specialized cells are the result of the expression of particular genes.
B.Proteins produced by cells have structures that are related to their function.
Explanation
Haemoglobin contains 4 polypeptide chains.In adults,they have 2alpha (a) globin chains and 2 beta (b) globin chains.Each polypeptide has a haem prosthetic group attached.A single haem bids one oxygen molecule.The 4 haemoglobin groups in every molecule of haemoglobin binds 4 oxygen molecules.
The information provided best demonstrates that the proteins produced by cells have structures that are related to their function. So the correct option is B.
What statement does this information best demonstrate?In this case, the protein hemoglobin has a specific structure that allows it to bind to oxygen and transport it throughout the body, which is directly related to its function.
This illustrates the concept of structure-function relationships in proteins. While the other statements may also be relevant in a broader context, they are not directly demonstrated by the information about hemoglobin and its function.
Then we can see that the correct option is B.
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What does the term pettifogged mean ?
A) to break down barriers
B) to have made a Victorian faux pas
c) to have fought over something trivial
D) to provide scientific evidence
For Odyssey ware its (To have fought over something trivial.) hope it helps and have a nice day.
when during the cell cycle are chomosomes visible
They become visible in the phase called "Prophase". I hope this helps!
A biome is a group of ecosystems that share which of the following ? Check all that apply.
- similar climate
- geographical location
- similar vegetation
- similar wildlife
A biome is a group of ecosystems that share which of the following? Check all that apply.
A.) similar climate
B.) similar geographical location
C.) similar vegetation
D.) similar wildlife
A biome is a group of ecosystems that share the following factors:
similar climatesimilar vegetationsimilar wildlifeA biome is an area of land which is characterized by its vegetation, soil,
climate, and wildlife.
Biomes usually have very similar types of climate, vegetation and wildlife but doesn't have to share a geographical location.
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Which sulfuric exhibits the highest albedo measurement
Sand
Forest cover
Bare soil
Fresh snow
The answer is fresh snow
Answer:
The correct answer is fresh snow.
Explanation:
The albedo refers to the measurement of reflectivity. It is the amount of the reflection getting diffused of the solar radiation out of the entire solar radiation getting by an astronomical body, like a planet Earth. It is determined on a scale from 0 to 1 and is dimensionless.
Of the mentioned options, the formation of fresh snow on the top ground covering demonstrates the greatest reflectivity, thus, the albedo measurement would be the greatest here.
Identify the level of organization. a. Group of bats living in a cave ________________ b. Red-eyed tree frog _______________ c. Insects, fish and algae in a lake _________________ d. An ocean ______________
The group of bats is a population, the red-eyed tree frog is an individual organism, the insects, fish, and algae in the lake make up an ecosystem, and the ocean is a biome.
Explanation:
a. The level of organization here is a population, as a group of bats living in a cave represents a group of the same species living together in one area.
b. The level of organization here is an individual organism, as a red-eyed tree frog is a single living organism.
c. The level of organization here is an ecosystem, as insects, fish, and algae in a lake interact with each other and with their environment.
d. The level of organization here is a biome, as an ocean is a large geographic area with specific climate, flora, and fauna.
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