Answer:
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In 1970, Frye and Edidin published research describing the mobility of plasma membrane proteins. They fused mouse and human cells together, creating a hybrid cell, and then examined the localization of mouse and human proteins over time. Initially mouse and human proteins were each restricted to one-half of the heterokaryon, but over time the mouse and human proteins mixed, with each being present over the entire cell surface. What technique did Frye and Edidin likely use to examine the mouse and human proteins
Answer:
The answer is "fluorescent microscopy".
Explanation:
A microscope featuring fluorescence is just the same as a conventional light microscope with additional features. Conventional microscopy employs visible light (400-700 nanometers) to illuminate and generate an enlarged image data. Scientists use this highly sensitive, precise, dependable, extensively to see the location of chemicals in tissues and macrophages in organs.
Find some applications of
nanotechnology in medical care and disease prevention.
Answer:
Preventing illnesses, more quickly diagnose, control diseases, treat diseases with fewer side effects, and create better medical aids such as more compatible prosthetics.
A mutation occurred in the following DNA sequence AGCCTAGCC and the mutated form is now AGCCTTAGCC. Which of the following correctly describes the result of this mutation?
1.A deletion occurred so all of the amino acids added after the mutation may be wrong.
2.An insertion occurred so all of the amino acids added after the mutation may be wrong.
3.A substitution occurred so all of the amino acids added after the mutation will definitely be wrong.
4.An insertion occurred so all of the amino acids added after the mutation definitely will be different.
Answer:
Explanation:
1.A deletion mutation occurs when a wrinkle forms on the DNA template strand and subsequently causes a nucleotide to be omitted from the replicated strand.
2.This type of variant results in a shortened protein that may function improperly, be nonfunctional, or get broken down. An insertion changes the DNA sequence by adding one or more nucleotides to the gene.
3. A substitution mutation can cause the following: Change in the coding of amino acids codon to a particular stop codon resulting in an incomplete protein, which is usually non-functional. Can cause Silent mutations where a codon change can encode the same amino acid resulting in no changes in the protein synthesized.
4. when a premature nonsense or stop codon is introduced in the DNA sequence. When the mutated sequence is translated into a protein, the resulting protein is incomplete and shorter than normal. Consequently, most nonsense mutations result in nonfunctional proteins.
A researcher is studying three wolf packs that hunt in the same area. The first pack preferentially kills mature, healthy moose; the second pack preferentially kills sick, old moose; and the third pack tends to kill an equal number of healthy and sick moose. Which pack likely plays the greatest role in determining the birth rate of the moose population
Answer:
The correct answer is - the pack that preferentially kills mature, healthy moose.
Explanation:
The birth rate is the number of individuals born in a population in a particular amount of time period. The birth rate can be determined by the individual born in a particular time period and that depends on how many healthy and viable individuals in a population can reproduce and produce new individuals.
Old and sicks are not the ones who can actively participate in reproduction and, however, if the number of healthy and mature individuals are killed there would be fewer newborns in the population.
Thus, the correct answer is the pack that preferentially kills mature, healthy moose.
Name the following.
(a) Tissue that forms the inner lining of our mouth.
(b) Tissue that connects muscle to bone in humans.
(c) Tissue that transports food in plants.
(d) Tissue that stores fat in our body.
(e) Connective tissue with a fluid matrix.
(f) Tissue present in the brain
Which of the following is most efficient for mapping large areas of the ocean or the whole ocean floor? A. satellite imaging B. infrared imaging C. radio waves D. sonar
Answer
the answer is d. sonar
scientists who believe global warming is happening would agree with which of the following statements?
(A) There are few, if any, misconceptions about global warming
(B) Most scientists agree that global warming is occuring
(C) Human activity is a minor cause of global warming.
(D) There is little humans can do to stop global warming
Answer:
B. Most scientists agree that global warming is occurring.
Explanation:
There is a large deal of misconception in the public surrounding global warming. Human activity is the primary cause of global warming, and therefore, there are many actions that humans could take to stop global warming.
What are the pigments in cyanobacteria used for?
Answer:
Pigments are useful to plants and other autotrophs
Explanation:
Not sure, but hope this helped a bit
differentiate between kidneys and lungs
Kidneys are used to excrete urine and toxic wastes. They are very essential for keeping the body clean. Usually it excretes urea, sodium and some salts which are considered as waste in the body.
Lungs are used to breathe in and out air. It helps us to stay alive. We breathe in oxygen rich air and breathe out foul carbon dioxide air.
Why are amphibians considered as unsuccessful land vertebrates
different between dominant character and recessive character
Dominant character:are always expressed when the connected allele is dominant,even if only one copy of the dominant trait exits.
Recessive character:are expressed only if both the connected allele are recessive.
Answer:
Dominant and recessive traits exist when a trait has two different forms at the gene level. The trait that first appears or is visibly expressed in the organism is called the dominant trait. The trait that is present at the gene level but is masked and does not show itself in the organism is called the recessive trait.
Explanation:
If some traits are absent or not expressed, but found in the parent, then the allele is said to be recessive.
Difference Between Recessive and Dominant Traits
DOMINANT
Dominant Trait Recessive Trait
Dominant allele is denoted by a capital letter
RECESSIVE
Recessive allele is denoted by a small letter
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The purpose of Mendel's experiments with dihybrid crosses was to determine
whether:
A. an F2 generation could be produced from the Fi offspring.
B. one of two traits could be transformed by DNA.
O c. one trait would affect how another is inherited.
D. traits are controlled by more than one gene.
Answer:
C. one trait would affect how another is inherited
Explanation:
A farmer decides to try to increase his profits by mating his two goats that produce the most milk together. The farmer’s descendants continue the process and over 400 years the family produces goats that make more milk than any in the country. Eventually the goats change enough that they are designated a new species. This is an example of:
A. Artificial selection
B. Acquired characteristics
C. Disruptive selection
D. Natural selection
Answer:
A.is the correct answer
Explanation:
People have been doing asimple form genetic enineeringfor thousands of years. This is called selective breeding. Selective breeding, or artifical selection, is a process where people try and improve plants and animals by selecting and breeding those that have desireable charactistics.
For example, a farmer might choose from his two largest cattle in his herd and breed them together so that the offspring will be even bigger and produce more meat.
All cells are contained within a membrane called the:
A. Cell wall
B. Cytoplasm bilayer
C. Cytosol
D. Phospholipid bilayer
Answer:
Phospholipid bilayer
Explanation:
That is essentially the primary componenent of the cell membrane where phospholipids form two layers.
a) What is the earth's path around the sun called? b) How long does it take for Earth to complete a complete circuit around the Sun? c) Name one planet that is closer to the Sun than Earth and another one that is further away. .
what is photosynthesis?
Answer:
Photosynthesis is the process by which plants prepare food using water, sunlight, chlorophyll and carbon dioxide
Answer:
It is the process in which green plants use sunlight to make there own food .
Explanation:
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HELPPPPPPPPPPPP!!!!!!!!!!!!!!!!!!!!!!!! All of the following cause mechanical weathering EXCEPT ____. a. ice c. burrowing animals b. tree roots d. carbonic acid
Explanation:
c. burrowing animals is the answer
Which part of the brain is indicated by the arrow below?
Pons
Cerebellum
Cerebrum
Medulla oblongata
Answer:
the correct answer is option ( A ) pons
Explanation:
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Answer:
A. Pons
Explanation:
I got it right on my quiz :)
Which of the following is not one of the steps of the water cycle?
A. Condensation of water vapor into clouds.
B. Throughflow of underground water back to the ocean.
C. Respiration of water into the atmosphere.
D. Transpiration of water into the atmosphere.
The option that is not one of the steps of the water cycle includes options C(Respiration of water into the atmosphere)
and D(Transpiration of water into the atmosphere).
Water cycle can be defined as the constant flow or movement of water through earth, atmosphere and the oceans either in liquid states or vapour.
The four main steps of water cycle includes:
EvaporationCondensationprecipitation and Collection (this leads to formation of underground water which gradually flows back into the oceans).In nature, water circulates mainly within the abiotic (non-living) environment; only a small proportion recycled through living organisms.
Therefore respiration and transpiration which occurs through living organisms doesn't form the major steps of water cycle, hence the correct option is C (Respiration of water into the atmosphere) and D (Transpiration of water into the atmosphere).
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Suppose you are a genetics counselor who is working with a 21-year-old pregnant woman who has just discovered that her father has Huntington's disease, a rare dominant autosomal trait. This disease usually develops in middle age, so people carrying this trait do not find out they have this genetic disorder until midlife. What are the chances that the child she is carrying will develop the disease
Answer:
s
Explanation:
what is not a function of plasma membrane
Answer:
the control center of the cell.
Tania looks at several different multivitamins in the store and notes that there are many different formulations with
varying amounts of several types of vitamins. She would like to choose a brand that only has the essential vitamins
that humans need to consume.
What are the vitamins that Tania should verify are in the product that she purchases?
O vitamins A, B, C, D, E, and K
O vitamins A, B, C, E, and K
O vitamins A, B, C, D, and E
O vitamins A, B, C, D, E, F, and K
Some of the cell membrane functions are similar to the ________ of the body.
the skin has cells like that
Indica el período, el grupo y el número atómico de los elementos que se representan con las siguientes configuraciones electrónicas: 1. 1s2 Grupo: ______ Periodo: _______ 2. 1s22s22p63s1 Grupo: ______ Periodo: _______ 3. 1s22s22p63s23p64s2 Grupo: ______ Periodo: _______ 4. 1s22s22p63s23p64s23d1 Grupo: ______ Periodo: _______ 5. 1s22s22p63s23p64s23d104p3 Grupo: ______ Periodo: _______
Answer:
1. 1s² Grupo: 18 Periodo: 1
2. 1s²2s²2p⁶3s¹ Grupo: 1 Periodo: 3
3. 1s²2s²2p⁶3s²3p⁶4s² Grupo: 2 Periodo: 4
4. 1s²2s²2p⁶3s²3p⁶4s²3d¹ (electrones de valencia) Grupo: 3 Periodo: 4
5. 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p³ (electrones de valencia) Grupo: 15 Periodo: 4
Explanation:
La configuración electrónica de los elementos es la disposición de todos los electrones de un elemento en niveles y subniveles de energía (orbitales).
Hay 7 niveles de energía, numerados del 1 al 7, y en los que los electrones se distribuyen, lógicamente, en orden según su nivel de energía. Los electrones con menos energía girarán en el nivel 1. Cada nivel se divide en subniveles. Estos subniveles en los que se divide cada nivel pueden ser hasta 4. Estos 4 subniveles se denominan: s, p, d, f. En el subnivel s solo puede haber un máximo de 2 electrones, en p puede haber un máximo de 6 electrones, en el subnivel d 10 electrones y finalmente en el subnivel f puede haber un máximo de 14 electrones.
Por otro lado, los electrones de valencia son los electrones que se encuentran en la última capa electrónica (denominada orbitales de valencia) y tienen muchas posibilidades de participar en una reacción química.
En la tabla periódica, en cada período aparecen los elementos cuyo último nivel de su configuración electrónica coincide con el número del período, mientras que en cada grupo aparecen los elementos que presentan el mismo número de electrones en el último nivel ocupado o capa de valencia. Entonces:
1. 1s² Grupo: 18 Periodo: 1
2. 1s²2s²2p⁶3s¹ Grupo: 1 Periodo: 3
3. 1s²2s²2p⁶3s²3p⁶4s² Grupo: 2 Periodo: 4
4. 1s²2s²2p⁶3s²3p⁶4s²3d¹ (electrones de valencia) Grupo: 3 Periodo: 4
5. 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p³ (electrones de valencia) Grupo: 15 Periodo: 4
Name TWO disorders that may occur within this body system and discuss cause/diagnosis/treatment
Help plz
Answer:
Cancer and Arthritis
Explanation:
Some causes of cancer include smoking, obesity, and lack of nutrition. Cancer is diagnosed using a biopsy. A biopsy is a procedure in which the doctor removes a sample of tissue. A pathologist looks at the tissue under a microscope and runs other tests to see if the tissue is cancer. Some treatments for cancer include Chemotherapy, surgery, Radiation therapy, and bone marrow transplant.
The most common cause of arthritis is usually if your family has a history of arhritis. It is usually diagnosed with an x-ray or a blood test. Treatment includes Painkillers, physical therapy, and exercise.
What is the best description of connective tissue? Question 3 options: All of its cells rest on a basal lamina. All of its cells associate via cadherins in their plasma membrane. All of its cells are electrically connected via gap junctions. All of its cells are sparsely distributed in the extracellular matrix.
Answer:
Connective tissue is a group of tissues in the body that keep the body and its organs in shape while also providing cohesion and internal support.
All of its cells exist sparsely distributed in the extracellular matrix is the best description of connective tissue.
What is connective tissue?
Tissue that sustains, protects and provides structure to other tissues and organs in the body. Connective tissue also stores fat, permits the movement of nutrients and other substances between tissues and organs, and allows the repair of damaged tissue. Connective tissue exists created up of cells, fibers, and a gel-like substance.
Connective tissue is discovered in between other tissues everywhere in the body, including the nervous system. The three outer membranes (the meninges) that surround the brain and spinal cord exist composed of dense inert connective tissue.
Connective tissues bind systems together, form a framework and support for organs and the body as a whole, store fat, transport substances, defend against disease, and assist restoration of tissue damage.
Hence, All of its cells exist sparsely distributed in the extracellular matrix is the best description of connective tissue.
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Though plants, fungi, and prokaryotes all have cell walls, we place them in different taxa. Which of these observations comes closest to explaining the basis for placing these organisms in different taxa, well before relevant data from molecular systematics became available?
Answer:
Due to other differences.
Explanation:
The plants, fungi, and prokaryotes all have cell walls, we place them in different taxa because of the other differences such as mobility, mode of nutrition etc. Plants and fungi are not mobile means can not move from one place to another whereas prokaryotes are mobile. Fungi and prokaryotes are heterotrophs means that feed on other organism whereas plants are autotrophs means make their own food. There is also difference in their cell wall i.e. the cell of plants is composed of cellulose, the cell wall of prokaryotes especially bacteria is composed of peptidoglycans and the cell wall of fungi is composed of chitin.
Laying the groundwork for the 'germ theory' of disease _________ discovered that organisms cannot spontaneously arise, but must be introduced into an environment.
A. Anthony Van Leeuwenhoek
B. Louis Pasteur
C. Robert Hooke
D. Ernst Ruska
Laying the groundwork for the 'germ theory of disease, Louis Pasteur discovered that organisms cannot spontaneously arise, but must be introduced into an environment.
Who was Louis Pasteur?Louis Pasteur was a chemist and microbiologist. He is known for the discovery of vaccines, fermentation, and pasteurization.
The germ theory is given by Pasteur. He first of all states that process fermentation is done by living organisms, bacteria, and yeast.
Thus, option B. Louis Pasteur is correct.
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the scientific name of the great egret has recently been changed from Casmerodius albus to Ardea alba. What is a possible reason for the reclassification of egrets?
A) Allopatric speciation
B) Discovery of a different ancestor
C) A change in the mating behaviors
D) A change in their habitat and geological range
Answer:
B) Discovery of different ancestry
Explanation:
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5. How could looking at the canopy help determine the difference between a forest and a
woodland?
Answer:
Forests naturally have a closed canopy permitting very little light to penetrate to the ground below. While woodlands have a more open canopy for light to go through it.
Explanation:
