A researcher has devised a technique that allows her to label all the integral membrane proteins with a fluorescent tag. She uses a laser to bleach the fluorescence in a specific area of the cell membrane. After 24 hours, she notices that fluorescence has returned to the bleached area. She can deduce from this experiment that integral membrane proteins are able to move laterally within the cell membrane.
In the field of biology, integral proteins of the cell membrane can be described as the proteins which are embedded in the plasma membrane of a cell. These integral membrane proteins allow the movement of specific molecules into or outside the cell through the method of facilitated diffusion.
Scientific research has shown that the integral proteins of a cell membrane can either move in a rotation or show lateral movements. It is due to the lateral movements that the fluorescence was seen again at bleached places by the researcher above. The fluorescent tag attached to only the integral proteins confirmed that it was the integral proteins showing moving laterally.
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Do both cells in model 3 have nucleus?
Animal and plant cells have many differences. However, they also have many structures in common. One of them is the nucleus that protects their genetic material. Yes, both cells in model 3 have nucleus.
What are the differences between animal and plant cells?Among the differences between animal and plant cells, we can mention the followings,
Plant Cells
Have a cell wallHave chloroplastsHave a unique big-sized vacuoleHave plasmodium, chromoplasts, and glyoxysomes.Animal Cells,
Have centriolesHave many small vacuolesHowever, they also share many characteristics. Among them we can mention that both of them
are Eukaryotic cellshave a cell membrane carry their genetic material in the nucleus and mitochondria.have organelleshave microtubules in their cytosol have pigmentsThe attached image (model 3) shows two cells. One of them is a plant cell and the other one is an animal cell.
Both of them have a nucleus, among other structures in common. So the answer is YES, both cells in model 3 have nucleus.
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Plant cells and some animal cells have
vacuoles, however, plant cell vacuoles
are...
A. much higher in quantity.
B. much larger in size.
C. very rare.
Answer:
B. much larger in size.
:0 x
Which structure is perforated with pores to allow material to move in and out of the nucleus?.
The nuclear envelope is perforated with pores to allow it to move in and out of the nucleus.
Every cell in the body has a nucleus, except for mature erythrocytes (red blood cells). While some cells contain more than one nucleus such as skeletal muscle and some other cells contain several nuclei.
The nuclear envelope surrounds the nucleus. i. e. largest organelle of the cell. It has a similar structure to that of
the plasma membrane. But the nuclear envelope contains tiny pores that allow a few substances to pass between it and outside the cytoplasm, i.e. the cell contents excluding the nucleus.
Therefore, the nuclear envelope is perforated with pores to allow it to move in and out of the nucleus.
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Which organisms are heterotrophs 
It is difficult to study the specialized abilities of the left and right cerebral hemispheres in the brains of normal individuals because.
It is difficult to study the specialized abilities of the left and right cerebral hemispheres in the brains of normal individuals because the information is exchanged between the two hemispheres swiftly and thoroughly.
The longitudinal fissure divides the two cerebral hemispheres that make up the vertebrate cerebrum (brain). Therefore, the left and right cerebral hemispheres of the brain can be considered to be separate. The cerebral cortex, which is the outermost layer of grey matter in each of these hemispheres, is supported by an inner layer of white matter. In eutherian (placental) mammals, the corpus callosum, a massive bundle of nerve fibers, connects the hemispheres. Other vertebrates also have smaller commissures that connect the hemispheres, including as the fornix, anterior commissure, and posterior commissure. To coordinate regional operations, these commissures transmit information between the two hemispheres.The cerebral hemispheres have three known poles.The information is exchanged between the two hemispheres swiftly and thoroughly.
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Fish without jaws are called _____ and includes the _____ and the_____
Answer: There are two categories of jawless fish: hagfish and lampreys. Hagfish usually feed on dead or dying fish. These fish can be found around the tunnels they dig in muddy bottoms, in moderate depths and cold waters. Scientists only know of about 20 species of hagfish worldwide.May 8, 2017
Sorry if it doesn't answer your sentence or question , i just thought about writing this..
- Hello! I am currently in the systematical process, of completing a FRQ, for my AP Psychology, course, and was wondering, if you could potentially, provide assistance; help, on this scenario, as follows:
Prompt: Eighteen-year-old Jennifer is afraid of heights. She has sought professional help to overcome this paralyzing fear but to little avail. When she is higher than two stories, she is reminded of a frightening trip to a high observation deck as a child. Each time Jennifer knows she will be in a high place, she plans out her approach days ahead but is anxious and agitated until the moment arrives. She realizes her fears are irrational but cannot seem to help her behavior.
A) Explain how the following approaches to psychology would help Jennifer understand the causes of her fears.
• Humanistic
• Psychoanalytic
• Cognitive
• Behavioral
• Sociocultural
B) Explain how the following types of psychologists would attempt to examine Jennifer’s behavior.
• Counseling
• Developmental
Answer:
A) Behavioral
B) Developmental
What type of cryptosystem commonly makes use of a passage from a well-known book for the encryption key?
The correct answer for this question is
Running key ciphers often use a passage from a commonly available book as the encryption key.
Symmetric cryptography is one type of cryptography (also known as secret key cryptography or private key cryptography). Because it is much faster than asymmetric cryptography, symmetric cryptography is best suited for bulk encryption. Both parties use the same key in symmetric cryptography.
A book cipher, also known as an Ottendorf cipher, is a type of cipher in which the key is a feature of a book or other text. In the present day, books are more practical for this application than items created particularly for cryptography reasons because they are generally available and common.
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What type of signal directs the synaptic vesicles to release their neurotransmitters into the synapse?.
Electrical signals direct the synaptic vesicles to release their neurotransmitters into the synapse.
Synaptic vesicles are the key organelles at the neuron terminals involved in synaptic transmission. They store neurotransmitters that are released in the synapses through an electrical impulse. A synapse is a gap between two neurons through which the electrical impulse is transferred from one neuron to another.
Directing synaptic vesicles through electrical impulses occurs by exocytosis. Exocytosis is observed to be a result of protein-protein interactions. Proteins of synaptic vesicles interact with the proteins of the plasma membrane of the pre-synaptic axon terminal and direct the synaptic vesicle to release neurotransmitters into the synapse.
We can thus say that neurons communicate through electrical impulses, often called action potentials, and chemical neurotransmitters released into the synapse.
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Are changes to an organism's physical environment likely to result in an evolutionary change?
Yes. This statement is true. Changes to an organism's physical environment are likely to result in an evolutionary change.
When there's a change in an organism's environment, it forces the organisms to adapt to new changes. Eventually, it leads to evolutionary changes.
For example, if an organism eats a particular type of plant and then disease occurs and destroys all those plants, the organism either has to fight the disease or adapt to a new type of plant to fulfill its energy needs.
Moreover, when a particular type of organism is isolated and can't find similar mates to reproduce, mutations and chromosomal variations occur forcing them into a new environment and they eventually evolve into new species.
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Most fats and fat-soluble nutrients are absorbed and carried through the ______ system.
Most fats and fat-soluble nutrients are absorbed and carried through the lymphatic system.
In the digestive system, absorption of digested food takes place in the intestine. To increase the surface area for absorption, the small intestine contains tiny projections called microvilli. Each of these microvilli contains blood vessels that absorb digested food and nutrients like carbohydrates and proteins into the blood stream and takes them to the liver through the hepatic portal vein. As for fats and fat-soluble nutrients though, they do not take this route - their molecules are just too big
Instead, fats and fat-soluble nutrients are absorbed through a different route, the lymphatic system. The microvillus in the small intestine also contains a vessel called the lacteal. This vessel is used for absorption of fats and leads to the lymphatic system. The molecules of fat are then further broken down and deposited in the heart, where they are absorbed into the blood vessels.
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what is a density of an object whose mass is 180 gramsand whose volume is 45cm3
Answer:
4.04
Explanation:
density=mass/volume
we know the mass and volume so we can plug it into the formula to get the equation density=180/45. then just divide that and you get 4.04
which process produces rna from dna
a.translaion
b.replication
c.trascription
d.conjugation
Answer: C transcription
Explanation:
Water molecules are formed using polar covalent bonds.
A. Identify the type of bond that holds different water molecules together
B. Explain how this bond gives water the all of the characteristics that make life possible on Earth.
Answer:
hydrogen bonding
Explanation:
water molecules are polar hence forming hydrogen bonding and this gives water unique properties such as relativly high melting and boiling points,high specific heat capacity, cohesion and adhesion
The tissue found covering body surfaces, lining body cavities, forming the internal and external linings of many organs, and constituting most gland tissue is tissue.
The tissue found covering body surfaces, lining body cavities, forming the internal and external linings of many organs and constituting most gland tissue is epithelium tissue.
Epithelial tissues are one of the four basic types of animal tissues, the rest being muscular tissues, connective tissues and nervous tissues. They are thin, continuous, packed, protective layers of cells that line the outer surfaces of blood vessels and organs. Epithelial tissues can be classified based on the shape of individual cells and based on the number of layers.
Based on shape, epithelial tissues can be divided into squamous, cuboidal and columnar epithelial cells. Squamous cells are usually flat and are found on surfaces that are susceptible to rubbing and abrasion as they are easily replaced, for example, the skin. Cuboidal epithelial cells are cube shaped, and columnar cells are long. Some columnar epithelia have hair-like projections called cilia, and some act as glands and secrete mucus.
Based on the number of layers of cells, epithelial tissues can be divided into simple (single layer) and stratified (multiple layer) epithelial cells.
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Nitrogen-15 amount of protons, neutrons,and electrons
Answer:
seven protons, eight neutrons and seven electrons make up an atom of nitrogen-15.
Explanation:
What is the function of a stop codon?
A) tells ribosomes and tRNA to stop reading codons and detach
B) tells ribosomes and tRNA molecules to attach to a strand of mRNA and begin reading and translating the codons that follow
C) tells ribosomes and tRNA to return to the nucleus of the cell
D) tells ribosomes and tRNA to package the proteins for transport out of the cell
The function of the stop codon is that it tells ribosomes and tRNA to stop reading codons and detach. That is option A.
What is stop codon?Stop codon which is also known as the terminal codon is defined as the sequence of nucleotides that signals the cell to terminate the production of proteins.
Examples of the stop codons seen in the cells include the following sequences:
UAG, UAA, and UGA.The functions of stop codons include the following:
They signal the end of protein coding sequences,They mark the site at which protein synthesis ends, andThey disassociate the ribosomal subunits.Therefore, the function of the stop codon is that it is tells ribosomes and tRNA to stop reading codons and detach.
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Which igneous rock has an amorphus texture?
Our brains are able to focus on and process ____________ of the information we perceive. a. all b. most c. very little d. approximately half please select the best answer from the choices provided a b c d
Answer:
IT'S LETTER "C" (VERRY LITTLE)Explanation:
Correct Me If I'm Wrong
16 The diagram below shows an experiment to investigate a certain physiological process String - Beaker Half filled visking tubing With Concentrated Salt Solution Distilled water a) Account for the observation made at the end of the experiment (4mks)
Answer:
In tube 3, water molecules are moving towards higher concentration i.e., from beaker to tube content, thus the mass increases but in case of tube 4, water is moving out from tube contents to beaker, as the beaker contains more concentrated solution. Thus, the correct answer is 'Water is moving into Tube 3, and water is moving out of Tube 4.'
Solve any question of Excretory Products
Which is a characteristic of the littoral zone of lake Erie?
A. floating aquatic plants
B.free-floating autotrophs
C. low level of biodiversity
D. wide variety of fish species
PLEASE ANSWER THIS I NEED IT FOR HW
The characteristic of the littoral zone of lake Erie among the above given choices is: floating aquatic plants.
The correct answer choice option a
What is meant by aquatic plants?These are plants which are generally adapted to survive in water to perform life processes.
Plants generally has chlorophyll in their chloroplast which enables them to manufacture their food by themselves through the process of photosynthesis.
These floating aquatic plants are plants belong to the littoral zone because they are organisms which are found in aquatic or water environment. And as such littoral zone includes to those areas of water bodies close to land.
So therefore, thecharacteristic of the littoral zone of lake Erie among the above given choices is: floating aquatic plants.
The correct answer choice option a
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Can someone answer these questions?
1. If antibiotics typically target peptidoglycan in the cell wall, then which type of bacteria
would be more difficult to kill and why?
2. Why is all the color lost when thin-walled bacteria are washed with alcohol during the
staining process?
3. Are bacteria living or non-living?
4. What is the purpose of Gram staining?
5. What pigment gives each stain its color?
Answer:1.Gram-positive bacteria, 2.some of the bacteria are able to retain the primary stain and some are decolorized by alcohol.
Explanation:
1. those species with peptidoglycan outer layers, are easier to kill - their thick peptidoglycan layer absorbs antibiotics and cleaning products easily. In contrast, their many-membraned cousins resist this intrusion with their multi-layered structure. Therefore, infection prevention techniques must ensure that they can breach the thick peptidoglycan layer of the Gram-positive bacteria but also get through the many layers of the Gram-negative bacteria. 2. The cell walls of gram positive bacteria have a thick layer of protein-sugar complexes called peptidoglycan and lipid content is low
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What is the independent variable?type of sugar
age of the rats
amount of sugar
weight of the rats
Which step in respiration utilizes a terminal electron acceptor such as diatomic oxygen (o2)?
Oxygen serves as the final electron acceptor in cellular respiration, eletron transport chain. The electrons travel via the electron transport chain and ATPase, the enzyme that produces high-energy ATP molecules, before being taken up by oxygen.
What is electron transport chain?An electron transport chain (ETC) is a collection of protein complexes and other molecules that connect protons (H+ ions) across a membrane with the transfer of electrons from electron donors to electron acceptors via redox processes (both reduction and oxidation occur simultaneously) a group of proteins in the mitochondria's inner membrane. The inner mitochondrial membrane of eukaryotic organisms houses the electron transport chain and the location of oxidative phosphorylation.The ETC receives electrons from NADH and FADH2 through the cooperation of four big multisubunit enzyme complexes and two mobile electron carriers. The electron transport chain contains a large number of membrane-bound enzymes.Learn more about the electron transport chain with the help of the given link:
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It has mostly (20)___________ connective tissue it is composed of a network of (21)__________ and elastic fibers it contains (22)_________ vessels and a rich (23)________ supply
It has mostly (20)_____dense irregular connective tissue______ connective tissue it is composed of a network of (21)____Protein fibres including collagen I and III______ and elastic fibers it contains (22) ___blood vessel and lymphpatic______ vessels and a rich (23)____fibrillin-rich microfibrils____ supply
What is dermal layer ?The middle layer of skin on your body is called the dermis. It has a variety of functions, such as defending your body from injury, sustaining your epidermis, allowing you to experience varied feelings, and creating perspiration and hair.
The skin is made up of three tissue layers: epidermis, the outermost layer. The middle layer is the dermis. The bottom, or fatty layer, is the hypodermis.Collagen fibres are thinly arranged in the papillary layer of the dermis, which is its top layer. Thicker collagen fibres are placed parallel to the skin's surface in the lowest layer, which is called the reticular layer.Learn more about Dermal layer here:
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What should be considered before speaking, so there is not a context error in the
communication.
Choose three answers.
Location
Gender
Environment
Time
Location ,Gender ,Time should be considered before speaking, so there is not a context error in the communication.
Gender inequality creates barriers to effective sustainable development and livelihoods by limiting or restricting women's access to resources and decision-making opportunities. Thus, addressing gender gaps in ecosystems management is essential to achieve conservation goals, community wellbeing and human rights.
Nonverbal communication involves passive communication through the use of gestures, tone of voice, body language and facial expressions to share your thoughts and feelings. You can even communicate non-verbally by the way you dress. Nonverbal communication often supports or adds to verbal communication.
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Location ,Gender ,Time should be considered before speaking, so there is not a context error in the communication.
Because gender disparity restricts or limits women's access to resources and decision-making opportunities, it presents challenges to successful sustainable development and livelihoods. In order to fulfill conservation objectives, community well-being, and human rights, it is crucial to eliminate gender imbalances in ecosystem management.
Using gestures, tone of voice, body language, and facial expressions to transmit your ideas and feelings is known as nonverbal communication. Even your clothing choices might convey nonverbal messages. Frequently, nonverbal communication augments or complements verbal communication.
This includes anything that can be seen with the eye. Its manifestations include facial emotions, hand gestures, posture, touch, and stance, among others. According to study, we communicate daily via nonverbal or physical means to the tune of 55%.
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Which process occurs during a light-independent reaction?
A light source stimulates electrons to move through a chain of proteins called the electron transport chain.
The reaction uses the energy from ATP and NADPH molecules to form glucose from carbon dioxide.
Green chlorophyll molecules absorb solar energy.
ATP and NATPH molecules become energy carriers for the next stage of reactions.
The Calvin-Benson cycle and the light independent process both take place in the stroma of the chloroplast. Carbohydrates are created from carbon dioxide through a sequence of chemical processes.
These processes are powered by the ATP and NADPH produced during the light-dependent process.
What is referred to as photolysis?Photolysis is the interaction of one or more photons with one target molecule and is a chemical reaction in which an inorganic chemical (or an organic chemical) is broken down by photons. It is also referred to as photodissociation and photodecomposition.
ADP and a phosphate group are joined by the rotating ATP synthase to create ATP. This procedure, known as chemiosmosis, enables light-dependent electron transport to generate ATP in addition to NADPH (which is produced at the ETC's conclusion).
The Calvin cycle is also known as the C3 cycle, the nighttime reaction of photosynthesis, or the light-independent reaction. However, it is most active during the daytime when there is a surplus of ATP and NADPH.
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How many turns of the double helix must be unwound during replication of the e. coli chromosome?
It is given in the question that the E. coli chromosome contains 4,639,221 base pairs.
As we know that the one turn of double-stranded chromosome contains ten base pairs.
Therefore, if we need to find the number of turns for 4,639,221 base pairs, then we need to divide it by ten.
Hence, the number of turns of the double helix that is required for unwinding during replication of E. coli is 463922.
What is E. coli ?E. coli or Escherichia coli is a type of bacteria that is known to reside in our intestines. E. coli belongs to the family of Enterobacteriaceae. When this bacteria is found in urine, then it can cause some dangerous urine infections, ultimately infecting urinary tract infections.
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Causal experiments may be used to test predictions. these predictions may be used to refine physical models. these physical models may be used to develop explanations of natural events. true false
The given statement is true that Causal experiments may be used to test predictions, these predictions may be used to refine physical models and these physical models may be used to develop explanations of natural events.
Scientific studies are used to test hypothesis . These hypothesis tests are used to refine models and These models are then used to develop explanations.
A hypothesis is idea about how something works that can be tested using experiments. A prediction is what will happen in an experiment if the hypothesis is correct.
Hypothesis is a statement that is capable of being falsified (capable of being shown to be wrong or incorrect). It is not a question.Scientific method-There is no such thing as a "scientific method"; there are only multiple and different ways of generating evidence-based understanding.Model- It is a tool (physical, conceptual, or mathematical) used to advance the scientific understanding of a phenomenon by the use of the tool.learn more about prediction and hypothesis here-
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A mutation that causes resistance in a population of beetles is an example of _______. a. macroevolution b. microevolution c. migration d. reproduction please select the best answer from the choices provided a b c d
A mutation that causes resistance in a population of beetles is an example of microevolution and the reason is mutation.
Evolution means when something evolves or changes and gets adopted because of those changes eliminating the previous population and getting fit in the environment and then leading life and growing and increasing their population. Evolution can be both macros which means evolution which is bigger and got sustained for a longer time and microevolution which means evolved but was not able to be sustained for a longer duration and is the change in allele frequencies that occurs over time within a population. This change is due to four different processes: mutation, selection, gene flow, and genetic drift. This change happens over a relatively short amount of time and in the case of the beetle's population, it is an example of microevolution because mutations are changes in genetic level so beetles were able to survive but not for a longer time and the changes didn't leave it effect for longer periods of time and few pieces of evidence of it are pesticide resistance, herbicide resistance, and antibiotic resistance are all examples of microevolution by natural selection.To know more about microevolution this click at https://brainly.com/question/8318826
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Answer:
Microevolution
Explanation:
