Answer:
mediante mutaciones en el ADN
Explanation:
El desastre ecológico de Chernóbil estuvo asociado a la liberación de importantes cantidades de radiación en forma de radioisótopos hacia la atmósfera, como producto de la explosión de un reactor que contenía toneladas de uranio radiactivo. La exposición a este tipo de radiación aumenta las probabilidades de sufrir mutaciones en la molécula de ADN. Dicho de otro modo, la radiación incrementa las chances de sufrir cambios en el material genético hereditario. Las mutaciones generalmente son corregidas por los mecanismos de reparación del ADN; sin embargo, existen ocasiones donde las mutaciones no son reparadas. Por otro lado, las mutaciones a menudo tienen efectos deletéreos y por lo tanto están asociadas a enfermedades, ya que los cambios en la secuencia genética provocan consecuentemente también cambios en las proteínas codificadas por estos genes. Por ejemplo, las mutaciones sufridas por genes supresores de tumores se encuentran asociadas a la aparición de células cancerosas por el mal funcionamiento de dichos genes. El efecto de la mutación depende del tipo celular que sufre la mutación: aunque las mutaciones sufridas por células somáticas pueden afectar la salud, estos tipos de mutaciones no son heredadas (simplemente porque las células somáticas no se heredan), mientras que las mutaciones sufridas por células germinales, es decir, en las células encargadas de la formación de gametos, pueden ser transmitidas a la descendencia.
What is a protein that is the main component of the thick filaments in muscle fibers and is responsible for muscle contraction?
Answer:
Myosin
Explanation:
Two of the important proteins are myosin, which forms the thick filament, and actin, which forms the thin filament. Myosin has a long, fibrous tail and a globular head, which binds to actin. The myosin head also binds to ATP, which is the source of energy for muscle movement
Answer: actin
Explanation:
Explain how scientific knowledge develops through making observations about the natural world.
Answer:
Scientific knowledge develops through making observations about the natural world. An observation may generate a scientific question, which may lead to a hypothesis. The hypothesis can be tested through experimentation. The results of experimentation lead to changes in scientific knowledge.
Explanation:
Explain how scientific knowledge develops through making observations about the natural world. my answers are never wrong trust me
The gallbladder is most accurately described as:________ A. The source of urea B. The storage site for fat and minerals C. The duct that drains the tail of the pancreas D. A distensible sack that concentrates and stores bile
Answer:
D. a distensible sack that concentrates and stores bile
Explanation:
The gallbladder is a small pouch that sits just under the liver and stores bile that is secreted from the liver until it is released into the intestines.
Hope that helps.
Part D What strengths and weaknesses do you see in your improved model?
Answer:
The new model correctly shows the process of oxygen and carbon dioxide exchange that takes place in the capillaries. However, it does not show that this oxygenated blood travels back to the heart for distribution to the body. It also does not show the structure of the alveoli.
Explanation:
PLATO answer
The lac operon in Escherichia coli Group of answer choices promotes the expression of lactose-utilizing enzymes when lactose is absent from the environment. prevents lactose-utilizing enzymes from being expressed when lactose is absent from the environment. prevents lactose intolerance. prevents lactose-utilizing enzymes from being expressed when lactose is present in the environment.
Answer:
The correct answer is - prevents lactose-utilizing enzymes from being expressed when lactose is absent from the environment.
Explanation:
The lac operon or the lactose operon is a operon that is essential for the many bacteria like Escherichia coli for metabolism and transport of the lactose.
In the presence of the lactose in the environment of the cell the lac genes are expressed due to the isomer of of lactose called allolactose binds to the Lac repressor protein and do not allow to bind it to lac operator. But in the absence of the lactose, the lactose utilizing enzymes are not expressed due to repressor bind to the lac operator and prevents the binding of RNA polymerase to the promoter.
What is an example of medicines whose molecular structure has been designed to interact with specific target molecules in living things?
Answer: G protein- coupled receptor
Explanation:
Drug target is when a native protein activity in the body is modified by a drug resulting in a desired therapeutic effect.
G protein is an example of target drug that has been deisgned to modified the affect of certain protein in the body to aid treatment.
The first thing is to Identify the biological origin of the disease and then the target that can be used to combat the Ailment.
Consider this animal cell. The organelles in an animal cell are labeled. Part E represents small dots on the nucleolus. What is the function of the small, dark organelles labeled E? They contain enzymes for the digestion of old cell parts. They regulate what enters and leaves the cell. They produce proteins for the cell. They store water and other materials.
The dark organelles labelled E is called the Ribosomes.
As human travel increases, the number of introduced species likely
decreases.
increases
stays the same
is eliminated
Answer: The correct answer to the question is option B
INCREASES.
As human travel increases(As humans move from one place to another),the number of introduced species likely increases because as humans move from one place to another,they introduce new species of organisms to their new environment.
These non-native species grow in this new environment,becomes economically important and doesn't pose any harm to their new ecosystem unlike invasive species that poses a substantial harm.
The number of introduced species are likely to : ( B ) Increases
As Humans migrate from one place to another they introduce new species into their new environment naturally or artificially.
MigrationThe movement of humans or any type of organism comes with the introduction of new species because as they move they take along with them certain species that naturally do not belong to their new environment.
Hence we can conclude that As human travels The number of introduced species are likely to Increase.
Learn more about Human migration : https://brainly.com/question/1213023
What results if a broken chromosomal fragment becomes reattached as an extra segment to a sister or non-sister chromatid? A Duplication B Inversion C Polyploidy D Nondisjunction
Answer:
The correct answer is option A "Duplication".
Explanation:
Chromosomal duplication is defined as a type of rearrangement of genetic material at which extra copies of a DNA fragment are created. In this case if a broken chromosomal fragment becomes reattached, this fragment will represent an extra copy, and therefore the resultant genetic material is considered a chromosomal duplication.
Which is most likely a source of air pollution?
Answer:
CFC's
Explanation:
CH2OH О, a CH3 H OH OH Н он Identify the macromolecule pictured above. O a Ob Protein Carbohydrate Lipid , ос Od Nucleic Acid
Answer:
Although the pictorial representation is not clear but the question can be answered based on the known structure of each biomolecule. The answer is:
Carbohydrate
Explanation:
Carbohydrate is one of the four biological molecules in living systems. Carbohydrates are composed of long chains of carbon, hydrogen and oxygen in a 1:2:1 ratio i.e (CH2O)n empirical formula.
The structure of carbohydrate is composed of a ketone (C=O) or aldehyde (CHO) functional group and hydroxyll groups (OH). The simplest unit of any carbohydrate is called a monosaccharide. Hence, from the above structure in the question, which consists of long chain of carbon, hydrogen and oxygen atoms, it can be identified as a CARBOHYDRATE.
Describe five of these properties and provide an example of each: Hydrogen bonding, cohesion and adhesion, surface tension, heat of vaporization, specific heat, density, and universal solvent
Answer:
Explanation:
Hydrogen bond is an intermolecular force of attraction, it occur between a proton in a molecule and an electronegative atom in the another. It is weak bond and can be found in water molecule.
Cohesion is force of attraction thst occur when molecules are attracted to other molecules of the same type
this can be found in hydrogen bonding.
Adhesion occur when molecules are attracted to different substances. It can be founf in water when reaction with other substance
A universe solvent is a substance that is used to dissolves many substance. Example is water it can be used in dissolving many substance.
Surface tension is the ability of a liquid surfaces to reduce into the minimum surface area. It allows some insect that are less dense to float in water
Head of vapourization is the amount of heat required to change a liquid into a vapor. Heat to convert water into vapour
Answer:
pH
Explanation:
"The pH of a solution is a measure of the molar concentration of hydrogen ions in the solution and as such is a measure of the acidity or basicity of the solution. The letters pH stand for 'power of hydrogen' and numerical value for pH is just the negative of the power of 10 of the molar concentration of H+ ions."
hope this helps :)
Match the causes with their effects.
Answer:
"destroys->deforestation"
"Oil spills->harms aquatic"
"injecting->pollutes"
1. deforestation
2. injecting fracking fluids into the ground
3. oil spills during transport on a ship
12. What group of organisms are most in danger of extinction?
those with small populations
both a and b
those with large populations that breed quickly
those that migrate or need special habitats
Answer:
Both A and B
Explanation:
How do the leaves help trees survive in their respective biomes? A. The temperate leaves are broad and flat to maximize sunlight absorption, while the taiga leaves are long and thin to minimize sunlight absorption. B. The temperate leaves are thin to minimize absorption of sunlight, while the taiga leaves are specialized to store water during the dry season. C. The temperate leaves shed water during the wet season, while the taiga leaves can enter long periods of dormancy during colder weather. D. The temperate leaves grow in the spring and shed in the cold, while the taiga leaves are dark and wax-coated to prevent the tree from freezing.
Answer:
The correct answer is option D.
Explanation:
The temperate leaves grow in temperate forests found in America, Europe, and Asia. This biome comprise of trees have evergreen conifers with needle like leaves. Such leaves can endure wide change of temperature and light. Some vegetation of temperate biome are conifers such as Pine, Hemlock and other. The trees shed their leaves with the beginning of fall and new leaves are delivered in late-winter to protect from the cold.
On other hand, Taiga forest is the biggest biome on the planet. This biome contain conifers with long, slender waxy needles like leaves. These waxy leaves provide security against freezing temperature and from dying drying out. In contrast to temperate they don't sheds their leaves in winter and keep their needles throughout the entire year.
Thus, the correct answer is option D.
Answer:
D. The temperate leaves grow in the spring and shed in the cold, while the taiga leaves are dark and wax-coated to prevent the tree from freezing
Explanation:
Got it right on Edmentum
Algae in the genus Caulerpa typically grow to a length of over half a meter and have structures similar to stems,leaves,and roots.Reproduction occurs when adults produce sperm and eggs that fuse to form offspring.Each adult Caulerpa consists of just a single cell,however.Which of the following statements is true?
A) Caulerpa violate the pattern component of the cell theory that all organisms consist of cells.
B) Caulerpa violate the process component of the cell theory that all cells come from preexisting cells.
C) Caulerpa violate both the pattern and process components of the cell theory.
D) The existence of Caulerpa is consistent with the cell theory.
Answer:
D) The existence of Caulerpa is consistent with the cell theory.
Explanation:
This question describes species of algae in the genus, Caulerpa, which is a unicellular organism that possesses structures similar to leaves, stems and roots in plants. It also grows to a length of about 0.5metres. it reproduces sexually by fertilization of gametes (sperm and egg).
According to all these described characteristics of Caulerpa, it's existence is in conformity or accordance with the unified cell theory, which was proposed by three scientists namely: Matthias Scleiden, Theodor Schwann, and Rudolf Virchow in the 1830's. The three components of the cell theory states that:
1. Cell is the fundamental and basic unit of life existence.
2. All living organisms are composed of one (unicellular) or more cells (multicellular).
3. All cells come from already preexisting cells.
Hence, based on the components of the cell theory and the life pattern of Caulerpa i.e. Caulerpa is made up of one cell, it is made from the fusion of preexisting parental cells etc. It is consistent with the cell theory.
a) dry apricots are left transferred to sugar solution?
What are the similarities and differences of homeothermic organisms and poikilothermic organisms.
Answer:
Poikilothermic organisms are ectothermic (obtain heat from their environments), while homeothermic organisms are endothermic (regulate body temperature physiologically)
Which statements accurately describe the roles of water on earth
Answer:
C.
Explanation:
It carries cold water from the equator to the poles
Describe and explain how temperature and light intensity affect the rate of photosynthesis?
Answer:
The rate of photosynthesis varies with light intensity and temperature.
Explanation:
The rate of photosynthesis varies with light intensity.it decreases as light intensity decreases and increase s as light intensity increases. However at much higher light intensity rate of photosynthesis becomes constant.
The rate of photosynthesis decreases with decrease in temperature.It increases as temperature is increased over a limit. But if light intensity is low increase of temperature has little influence on rate of photosynthesis.
Please if you can, please help..
What is an allele that isn't expressed called?
Dominant allele
Recessive allele
Genotype
Phenotype
The final phase of translation, called termination, is signaled by three nucleotides, called a __________, that mark the end of a polypeptide chain.
Plasmid
Exon
Intron
Stop codon
A doctor suspects that one of her patients has a deficiency in one of the six key elements found in living organisms. He has low energy and extremely weak, soft bones. Based on this information alone, which nutrient supplement will she most likely prescribe? phosphorus zinc sodium sulfur
Answer:
The answer is: phosphorus
through what are larger molecules are formed?
Answer:
Through combination of each monomer using covalent bonds.
Explanation:
Most macrmolecules are made from single subunits or building blocks called monomers combine with each other using covalent bonds to form larger molecules known as polymers. In doing so, monomers release water molecules as byproducts.
steps of Biological method of study taking malaria as an examples
Explanation:
The different steps which are involved in biological method are the the invasion, the rapid division followed by the spread of infection. ... Malaria results in infection after the bite of the female anopheles mosquito. The parasites enter the bloodstream. as a result of this there is predominant infection.
Choose all the answers that apply.
Rapid burial _____.
increases exposure to oxygen
decreases exposure to oxygen
slows down the rate of decay
prevents scavengers from eating organism remains
Answer:Organisms decompose more quickly when they are in contact with oxygen. Most environments exposed to the open air are in contact with plenty of oxygen, so the soft tissues of dead organisms, whether plants or animals, decay quickly. ... For an organism to become a fossil, it must not decompose or be eaten.
Explanation:
A Mesopotâmia e o Egito antigo foram as primeiras culturas que desenvolveram métodos de irrigação. Um dos métodos eram os canais, mas quando não funcionavam, os egípcios precisavam inventar ferramentas para bombear água do Nilo e de outras fontes. E dessa forma, desenvolveram o sistema de canais. Os governantes egípcios colocaram uma enorme importância no sistema de canais do país e os governantes regionais foram responsáveis pela escavação e reparação das estruturas. Os canais usavam a água do Nilo quando o rio estava na época da cheia e inundava algumas terras... Podemos dizer que antes mesmo dos egípcios, os equinodermos tinham o mais complexo sistema de distribuição de água por pressão do mundo. Você concorda com essa afirmação? Justifique usando informações que você aprendeu durante a aula do equinodermos.
Answer:
ffffffffggggggggggbhgggggghhhhhhgffghgfffddñbgggggggggggggggggddrryyyygfreeeeeerrrrrrrdfbbbbhhhgggggghhyyyggggyyyyyygggttggggggyyygggygbbbggggghhhhyyhhhyyyyuyuuuuuuyybggggggggggggtttfggf
Explanation:
vvfdd
what is the role of pancreas in digestion
Answer:
Explanation:
The pancreas is a glandular organ in the digestive system and endocrine system located in the abdominal cavity behind the stomach. It is an endocrine gland producing several important hormones, including insulin, glucagon, somatostatin, and pancreatic polypeptide, all of which circulate in the blood.
The location where sea floor spreading occurs is called the
Answer:
The location where sea floor spreading occurs is called the mid ocean rigid.Explanation:
Hope it helps you....Thank you..☺..CER
Can someone help me with these questions? Thank you.
Answer:
1.C
2.E
3.C
4.R
5.E
6.R
7.E
8.C
9.E
(do not take my word for it maybe wait for someone else to answer to compare to mine)
Object is not moving Answer 1 Choose... Object is moving towards observer Answer 2 Choose... Object is moving away from observer Answer 3 Choose...
Answer:
Object is moving away from observer.
Explanation:
If a force is applied to an object it starts moving. The object will move towards the observer, this is known as Doppler effect. It is when an observer or the thing under observation moves. There is change in its position due to a force exerted on it. The motion of the object also depends on the direction of force.
