Answer:
False. There are 20 amino acids, but 64 possible codons.
Explanation:
Genetic information for the aminoacids assembly during the protein synthesis is stored in short sequences of three nucleotides named codons in the mRNA. Each of the codons represents one of the 20 amino acids used to build the protein. The total number of possible codons is 64, from which 61 codify amino acids -more than one codon codify for the same amino acid-. One of these amino acids is also the start point of protein synthesis. And the left three codons are stopping translation points.
The codons indicating the initiation or stop points during the translation process are:
• The start codon AUG is the most common sequence used by eukaryotic cells and places near the 5´extreme of the molecule. However, other codons might be used as well. Prokaryote cells might use the codons GUG or UUG.
• The end codons are UAA, UAG, UGA.
Help with these questionsss pleasee
Answer:
21. Troposphere
22. Exosphere
23. Troposphere
24. Mesosphere
25. Crust
26. D
27. B
28. A
29. Sun
30. D
Explanation:
Troposphere is the layer of atmosphere that is present near to the earth surface whereas exosphere is the layer of atmosphere that is present farthest from the earth surface. Troposphere is the layer where weather of the earth is present. The mesosphere is the layer of the atmosphere that protects the Earth from meteoroids. Crust is the part of the earth on which we walk. oceanic crust and continental crust are the two types of crust. Mantle is the layer in which convection currents occurs. Convection currents refers to the rising of hot magma and sinking of cool magma. Sun is the source of energy and all energy comes to the earth from sun. Transitional boundary is not a types of plate boundaries.
Vocabulary:
LLLL
1.
2.
3.
4.
Adaptation
Speciation
Darwin
Homologous structures
A. Developed the theory of natural selection
using evidence
B. Similar anatomical structures showing
common ancestry
C. Inherited trait that allows individuals to
survive better
D. New species form due to isolation
Answer:
A. Charles Darwin.
B. Homologous structure
C. Adaptation.
D. Speciation.
Explanation:
Genetics can be defined as the scientific study of hereditary in living organisms such as humans, animals and plants.
Heredity refers to the transfer of traits (specific characteristics) from the parent of a living organism to her offspring through sexual reproduction or asexual production. Some examples of hereditary traits are dimples, tongue rolling, baldness, handedness, freckles, curly hair, color blindness, height, etc.
A. Charles Darwin: he developed the theory of natural selection based on certain evidences. Natural selection can be defined as a biological process in which species of living organisms having certain traits that enable them to adapt to environmental factors such as predators, competition for food, climate change, sex mates, etc., tend to survive and reproduce, as well as passing on their genes to subsequent generations.
B. Homologous structure: it involves similar anatomical structures that are having common ancestry or from the same lineage.
C. Adaptation: it is an inherited trait that allows individuals to survive better.
D. Speciation: it is an ecological and biological process through which new species are formed due to isolation.
Inherited traits are:
A Dependent on diet
B Acquired during an organism's life
C Free of mutations
D Passed on from parent to offspring
Answer:
d
Explanation:
One side of section of DNA is shown below. A-G-C-T-T-G-A Which of the following would be the matching side of the section of DNA?
F A-C-G-T-T-C-T
G T-C-G-A-A-C-T
H A-G-C-T-T-G-A
J C-T-A-G-G-A-G
Answer:
G) TCGAACT
Explanation:
The dominant trait for fur color in a species of fox is orange(O), the recessive trait is gray(o). If a fox has a phenotype of orange fur, what possible genotypes could they have?
Answer:
OO, Oo
Explanation:
Which of the following represents MEiosis? *
10 points
It produces 4 haploid, 1️⃣N cells.
It produces 4 diploid, 2️⃣N cells.
Answer:
my answer will be it produces 4 diploid, 2 n cells
How is DNA condensed in order to fit inside cells?
Explanation:
DNA is tightly packed up to fit in the nucleus of every cell. As shown in the animation, a DNA molecule wraps around histone proteins to form tight loops called nucleosomes. These nucleosomes coil and stack together to form fibers called chromatin.
Of the five things that you listed in question 1, which one do you think holds the most promise for making a real difference in environmental quality over the long term.
The Five Things are Transport, Agriculture, Culture, Economics, and Energy
Answer:
agriculture
Explanation:
Answer:EconomicsExplanation:
How is a person exposed to toxins? Explain each. (There are three ways to be exposed to toxic substances.
Answer:
Three ways to be exposed to toxic substances:
1. Inhalation - Inhalation is when we are breathing something into our lungs. For example, a firefighter may ingest toxic gasses and chemicals when entering a burning house.
2. Ingestion - Ingestion is when we are taking something by mouth. If someone eats a piece of cheese that is expired, they will most likely get food poisoning.
3. Skin contact - Skin contact is when a substance is in direct contact with our skin. For example, if someone spills an acidic substance on their arm during science class, this is considered a toxin and they may get a painful chemical burn.
Which two systems are used in order for your muscles to churn the stomach and aid in digestion
Answer:
There's longitudinal,circular and obligue (diagonal)
Explanation:
These muscles allow the stomach to churn the food during digestion.
59:53
The United Nations Environment Program regulates the environmental policy for all countries.
Please select the best answer from the choices provided
ОТ
OF
Answer:
The United Nations Environment Program regulates the environmental policy for all countries. ... Other countries have no environmental issues.
Explanation:
thank me later
Over time, a series of random occurrences can cause an allele to become more or less common in a population. This is called . When a population is severely reduced by an environmental disaster such as a fire, the result is a due to the reduced genetic diversity of the survivors. 3. The can occur if a small group of organisms migrates to a new location and becomes isolated from the rest of the population.
Answer:
Over time, a series of random occurrences can cause an allele to become more or less common in a population. This is called Genetic drift.
When a population is severely reduced by an environmental disaster such as a fire, the result is a Bottleneck effect due to the reduced genetic diversity of the survivors.
The Founder effect can occur if a small group of organisms migrates to a new location and becomes isolated from the rest of the population.
Explanation:
Genetic drift is an evolutive force. It is the random change that occurs in the allelic frequency of a population through generations. Its effects are harder in a small-sized population, meaning that the magnitude of this change is inversely related to the size of the original population.
Genetic drift results in some alleles loss -including the beneficial ones-, while some other alleles get fixated. Low-frequency alleles are the most likely to be lost. The changes produced by genetic drift accumulate in time and results in a loss of genetic variability within a population.
Genetic drift affects a population and reduces its size dramatically due to a disaster or pressure -bottleneck effect- or because of a population split -founder effect-. The bottleneck effect most likely affects smaller populations.
The bottleneck effect -a case of genetic drift-, mostly affects smaller populations after the occurrence of a natural disaster or some human action -such as extensive hunting, for instance-. These events might act as a pressure that reduces significantly the number of individuals in a population. In these situations, some alleles are lost, and the survivors have a different genetic charge than the one of the original population. There might be a reduced genetic variability, with a possibility of developing a peculiar allelic component. If the survivors in the population carried or developed a mutation, probably this mutation passed from generation to generation. Founder effect refers to the origin of a new population from only a few individuals that are coming from a bigger-sized population. These founder individuals, which are carrying some of the genes of the original population, settle down in a new area and reproduce. The new and small population might or might not be genetically representative of the original one. Some rare alleles might be exceeded or might be lost by complete. Consequently, when the small population increases in size, it will have a genetically different composition from the original one. In these situations, genetic variability is reduced, and there exists the possibility of developing a peculiar allelic composition. When the number of individuals that originated the new population is low, the founder effect will be very extreme because the genetic drift effects are inversely proportional to the original number of individuals.Fill in the blanks for the three statements of Cell Theory.
All______are made up of cells.
Cells come from other cells.
Cells are the basic unit of_______.
a. Life; cells
b. Abiotic factors; biotic factors
C. Living things; life
d. Plants; organelles
Answer:
c and a
Explanation:
Answer:
C. Living things; life
Explanation:
Image is attached
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Have a good day :)
Which of the following receives energy directly from the sun?
Group of answer choices
decomposers
nutrient pool
consumers
producers
Answer:
producers
Explanation:
producers are plants, grass, etc.
compare the mechanism of gaseous exchange between an insect and a mammal
Explanation:
Insects have water at the ends of their tracheoles for oxgen to dissolve in to diffuse. ... The circulatory system makes the gas exchange system in fish and mammals more efficient than the gas exchange system in insects. Mammals and insects both get their oxygen from air, while fish get oxygen from water.
How did the polar bears get their white fur?A.Bears have various alleles for fur color ranging from dark to light. Those bears with the lighter fur had a better chance of survival in the biome, so they lived and reproduced passing on their light colored gene to their offspring. As generations passed, white fur became more common.B.As a polar bear grows up, its fur gradually gets lighter, so by the time they are a teenager, they have fully white fur and are then best suited to survive in their environment.C.Polar Bears migrated from the Pacific Northwest up to the Tundra and Arctic because they knew that they would have a better chance of surviving in this cold region.
Answer:
I believe it’s c report me if I’m wrong on this
Explanation:
No links please im already failing
Answer:
Think its the last one
What will happen to the passengers sitting on a train if the train comes to a sudden stop?
Answer:
Their organs will smash into their ribcage
Explanation:
Answer:
they would be sent forward/ whatever direction the tarin was going.
Explanation:
let's say the train is moving 20 mph
Therefore everyone/ everything in the train is also moving 20 mph. If the train just went to 0 mph. everyone would still be going 20 mph.
What is digestion?
the process of breaking down food into small enough pieces to be absorbed by the cells
1. the process of eating and chewing
2. the process of releasing energy to the cells
3. the process of breaking down food enough to be swallowed
based on questions 6 , 7 or 8 what happens to the voltage required in a circuit as the resistance decreases ? increases ?
Answer:
As the resistance decreases the Voltage Increases
Explanation:
What are three new things that you learned about the creation of the universe?
Answer:
The universe is 14 billion years old.
Quasars reside in the cores of galaxies.
We thought the expansion of the universe was slowing down.
We've seen the same moment of time on more than one occasion.
The three new things related to the development of the universe should be that it have the 14 billion years old, cores of galaxies, and the expansion should be fall down.
What is the universe?The universe refer to the space and the time that involved the planets, stars, galaxies, etc with respect to the matter and energy.
The big bang theory represent the cosmological description at the time of development of the universe.
In this way, the three new things should be learned.
Learn more about universe here: https://brainly.com/question/10117154
PLEASE HELP ASAP PLEASE PLEASE PLEASE 10. Julie has red hair while Billy has brown hair. Explain how the differences in their chromosomes can account for this difference in appearance
Answer:
Hair colour is casue by of DNA strand contained in the chromosome
Explanation:
A simplified answer to this is:
A chromosome contains a double stranded DNA, and DNA carries genetic information and accounts for gene expression. plus dna is unique to each individual.
A minor object orbiting in a solar system is a(n)
asteroid
regolith
meteorite
meteor
Which of the following groups makes up a system?
a. cell membrane, nucleus, cytoplasm
b. stomach, eyes, ears
c. heart, blood vessels, capillaries
d. food molecules, mouth, stomach
what kind of fault forms between two plates that are converging?
Answer:
Reverse faults occur at convergent plate boundaries, while normal faults occur at divergent plate boundaries. Earthquakes along strike-slip faults at transform plate boundaries generally do not cause tsunami because there is little or no vertical movement.
Explanation:
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1. Compact, complex animals have internal exchange surfaces that are extensively branched or folded, providing a large _____________.
2. In the _____________, nutrients are absorbed across the many fingerlike projections of the lining of the intestine.
3. In the _____________, oxygen and carbon dioxide are exchanged across the epithelial linings of sacs at the tips of tiny air tubes.
4. In the _____________, wastes are removed from the blood across the epithelial linings of excretory tubes.
5. The _____________ transports materials between the exchange surfaces of other organ systems and body cells.
6. Body cells are bathed in _______________, and exchange between body cells and the blood takes place through this fluid.
Answer:
1.) Surface area
2.) Digestive system
3.) Respiratory system
4.) Urinary system
5.) Circulatory system
6.) Interstitial fluid
Explanation:
In higher complex animals, such as the vertebrates, the internal exchange surfaces are modified in such a way to facilitate the transfer of materials from cell to cell in the body. As animal size increases, diffusion distances increase and the ratio of surface area to volume drops. Larger organisms have had to evolve specialized systems that are made up of structures that provides a large surface area for internal exchange of materials. Examples of these systems include:
--> DIGESTIVE SYSTEM: The fingerlike projections of the lining of the intestine provide a large surface area for the absorption of nutrients.
--> RESPIRATORY SYSTEM: This ends with a sac called the alveolar sac. The anatomical arrangement of capillaries and alveoli produces a very large surface area that is available for gas exchange.
--> URINARY SYSTEM: wastes are easily removed from the blood across the epithelial linings of excretory tubes.
--> CIRCULATORY SYSTEM: transports materials between the exchange surfaces of other organ systems and body cells. An example is seen in the relationship between the alveoli and the capillaries surrounding it.
For any exchange of materials to occur between cells the fluid known as the INTERSTITIAL FLUID which fills the intercellular spaces allows dissolved materials to be exchanged between body cells and the blood
Bacteria which convert nitrogen gas into bio-available forms of nitrogen, such as ammonia and nitrate, are known as
O A. nitrogen emitting bacteria
O B. carbon emitting bacteria
C. nitrogen fixing bacteria
D. carbon fixing bacteria
Answer:
A. nitrogen emitting bacteria
Yeast causes faster rising than baking powder or baking
soda.
O True
O False
Answer:
true
Explanation:
if I'm wrong ok it's not my problem
The _of an ecosystem is based on whether the population in the system destroys the natural resources of that system.
Answer:
Health sustainability
Explanation:
please mark brainliest
The Health sustainability of an ecosystem is based on whether the population in the system destroys the natural resources of that system.
What is an ecosystem?An ecosystem can be defined as a biological community that comprises all living organisms (biotic factors) and the physical environment (abiotic factors) with which they interact.
Thus, Health sustainability is the answer.
To learn more about ecosystem click here:
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1. All of the following are examples of density- independent factors EXCEPT:
A) Weather
B) Predation
C) Natural disasters
D) Human activity