this element was poisonous to the first forms of life on earth until they evolved to tale advantage of it by using cellular respiration. What is it?
Answer:
Oxygen
Explanation
Cellular respiration means taking Oxygen and using it to "breathe" and also be used in many other processes.
Which of the following statements are TRUE about plasmids?
I. Plasmids are extra-chromosomal DNA molecules.
II. Plasmids are self-replicating extrachromosomal DNA molecules.
III. Plasmids are associated with antibiotic resistance genes.
Answer:
ll. (2nd Option)
Explanation:
Plasmids are self-replicating extrachromosomal DNA molecules found in Gram-negative and Gram-positive bacteria as well as in some yeast and other fungi. Although most of them are covalently closed circular double-stranded DNA molecules, recently linear plasmids have been isolated from different bacteria.
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Which kind of mutation is most likely to lead to a new trait in an organism?
A. A frameshift mutation
B. A nonsense mutation
C. A missense mutation
D. A silent mutation
A frameshift mutation is a kind of mutation which is most likely to lead to a new trait in an organism. Thus, the correct option is A.
What is Mutation?A Mutation may be defined as the sudden, stable, and inheritable alterations in the genomic sequence of an organism.
A frameshift mutation occurs when the reading frame modifies the grouping of the bases and thereafter transforms the amino acids that are encoded. Here, the encoded protein is non-functional.
A missense mutation arises when there is a blunder in the DNA code and one of the DNA base pairs is altered.
A nonsense mutation occurs when a single change in the base sequence outcomes in the exhibition of a stop codon, thereby concluding protein synthesis prematurely.
Therefore, it is well described above.
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help meee,A study was carried out on the emission of N2O in a sewage treatment plant (ETE) in the metropolitan region of Rio de Janeiro.
of January. During the study period, this ETE received sewage from 470,000 inhabitants. One particularity observed is that in addition to receiving domestic sewage, this station received, during a certain period of the day,the material leached from a sanitary landfill, responsible for causing an increase in the load of organic matter in the ETE in study. Continuous measurements of dissolved oxygen concentration and N2O emission were carried out at this station for 3
hours, in the period prior to the entry of the material leached from the landfill and in the period immediately after the entry of this material.
1-Why, soon after the material from the landfill, the concentration of dissolved oxygen decreased;
2-Why is there a significant increase in the emission of N2O soon after the entry of the leached material from the landfill? What bacterial processes can contribute to the increase in the emission of this observed gas
in this experiment?
The emission of N2O from the landfill site is called denitrification and it is caused by the action of denitrifying bacteria.
What is dissolved oxygen?The term dissolved oxygen refers to the amount of oxygen that is present in a water body. Now, we know that the addition of organic matter into water requires oxygen to break it own thus the dissolved oxygen content will go down in response to the added organic load.
The process that leads to the emission of N2O from the landfill site is called denitrification and it is caused by the action of denitrifying bacteria.
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Water bends light. This type of bending is called refraction. The drawing tool shows a penny submerged in water, but only part of the path of the light ray is shown. How could the light ray bend as it enters and leaves the water so that you can see the penny at position B? Draw the missing parts of the light ray so the penny is visible at position B.
Water makes the penny visible by bending the light rays towards the normal.
What is refraction of light?Refraction is the bending of light rays as it crosses the boundary of media of different densities.
The ability of water to to bend light is employed in making a penny visible when water is added to container container a penny which was not visible initially.
Therefore, water makes the penny visible by bending the light rays towards the normal.
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Using the ICD-10-CM code book, assign code(s) for the following
diagnosis: Chronic mastitis of right breast.
N61. 21 is a specific ICD-10-CM code that can be used to show a diagnosis for refund goals.
What is in ICD-10-CM?The medical field has different types of manuals. This is called a tabular list in the ICD-10-CM. It is used for accurate ICD-10-CM code assignment as it can be used to identify poisonings and external causes of high/bad effects.
The second part of the ICD-10-CM is known as the Tabular List of Diseases and Injuries. There are 21 chapters are there in the tabular list.
Note that all ICD-10-CM codes start with a letter, all code stages are in alphabetical order based on the first characters.
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is this an underlined clause?
Nasa created the first smoke detectors when they built the space station.
Why are mosses called pioneer plants?
Answer:
The first organisms to appear in areas of primary succession are often mosses or lichens. These organisms are known as pioneer species because they are the first species present; pioneer species must be hardy and strong, just like human pioneers.
Explanation:
what is the functions of leaf midrib
Answer:
The Midrib in plants protect and provide support to the leaf, a flat organ whose chief role is photosynthesis, and secondary functions are attraction of pollinators, plant protection, and in some carnivorous species, a meal.
Midrib helps to keep the leaf in an upright position and to keep the leaf strong with protection from the wind.
a carbohydrate 7 monomers long has how many glycosidic bonds?
The bond between monomers of carbohydrates, e.g. glucose and fructose is a glycosidic bond-forming in this case a sucrose molecule (disaccharide). A glycosidic linkage is a C-O-C bond (ether). The underlying reaction is a condensation reaction where 1 OH- and 1 H+ are split off resulting in the formation of H2O.
Plants counteract the greenhouse effect by removing___________ during
photosynthesis.
A. oxygen
B. carbon dioxide
C. glucose
Answer:
B
Explanation:
The green house effect is a phenomenon resulting from the release of air pollutant gases including carbon dioxide.
photosynthesis works by absorbing carbon dioxide gas and water as raw materials for energy & glucose production.
therefore one can conclude that by removing one of the green house gases (pollutants) we can counteract (go against) it.
what are the effects of anaemia
Answer:
dizziness, weakness , shortness of breath
A student, who is studying two different cells A and B in cell cycle, notices that cell A has 5 picograms of DNA while cell B has 10 picograms of DNA. Both cells are from the same organism. Which of the following is the best description of the cell cycle stage of each cell?
A. Cell A is in prophase of mitosis; Cell B is in metaphase of mitosis.
B. Cell A is in G1 phase; Cell B is in G2 phase.
C. Cell A is in G1 phase; Cell B is in between G1 and S phase.
D. Cell A is in G2 phase; Cell B is in G1 phase.
Answer:
As the cell enters meiosis 1, it's DNA replicates in S phase and then reduces to half when the cell splits into two. Hence, the amount of DNA remains 10 pg.
During meiosis 2, there is no DNA replication but only division between cells, leading to 5 pg of DNA in all four daughter cells.
So, the correct option is '10 pg and 5 pg respectively'
L 1.2.6 Quiz: Evaluating Scientific Claims
Question 4 of 10
Which of the following is the best definition of empirical evidence?
OA. Evidence that supports a scientific hypothesis
B. Evidence based on personal beliefs or preferences
OC. Evidence gathered through direct observation
D. A set of untested data used to support product claims
The statement' evidence gathered through direct observation' is the best definition of empirical evidence.
What is empirical data?Empirical data can be defined as verifiable information that can be tested by using the scientific method.
Empirical data can be obtained by means of observational and/or experimental procedures.
Empirical evidence needs to be testable, which means it can be confirmed or rejected by using the scientific method.
All scientific theories are based on well-sustained empirical evidence by experimental and/or observational procedures.
In conclusion, the statement' evidence gathered through direct observation' is the best definition of empirical evidence.
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Red bone marrow only differs from yellow bone marrow because of a difference in the amount of which substance?
Red bone marrow only differs from yellow bone marrow because of a difference in the amount of fat.
What is Bone marrow?Bone marrow may be defined as an absorptive substance discovered in the middle of the bones. It synthesizes bone marrow stem cells and other substances which are responsible for producing blood cells.
The complete question is as follows:
the amount of antibodythe amount of cytokinethe amount of antigenthe amount of fatRed marrow includes blood stem cells that can evolve into the different components of blood such as red blood cells, white blood cells, or platelets. While yellow marrow is constructed predominantly of fat.
Thus, it is well described above.
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The molecular bonds between atoms are considered to be _____ in a food item, before you eat it.
Group of answer choices
chemical energy
kinetic energy
an example of reverse thermodynamics
cytoplasmic energy
Answer:
Chemical energy
Which form of energy does our food contain?
Yes, food serves as a basic source of the nutrients and energy needed to maintain and grow the body. Food contains what is referred to as "chemical energy" in terms of energy. This is nothing more than the bonds between the atoms that make up the specific food item, which the body may break down to release energy that it can use to create, repair, and ensure appropriate bodily function. This chemical energy is ultimately sunshine energy, which plants have the extraordinary capacity to use and store in the chemical compounds they produce, mostly in their leaves, using sunlight, water, and atmospheric carbon dioxide. Food does indeed contain energy, but that energy ultimately originates from the sun. Since people have known this for thousands of years, many civilizations revere the sun, along with water, air, and of course fire, as the source of life. For the body to function, energy is required by the muscles, brain, heart, and liver. The food we eat provides us with this energy. Our bodies break down the food we consume by combining it in the stomach with fluids (acids and enzymes). The carbohydrate (sugars and starches) in food is broken down into another form of sugar, termed glucose, during digestion in the stomach. The glucose is absorbed by the stomach and small intestines before being released into the circulation. Upon entering the bloodstream, glucose can either be utilized right away for energy or stored for later use. But in order to utilize or store glucose for energy, our systems need insulin. When insulin is absent, glucose remains in the circulation, which raises blood sugar levels. The glucose is burnt inside of your cells to create heat and adenosine triphosphate (ATP), a chemical that stores and releases energy as the cell requires. Either oxygen is present throughout the process of converting glucose into energy, or it is not. In the mitochondria, which are microscopic structures located in the gel-like fluid that fills every cell, glucose is transformed into energy using oxygen. This conversion results in waste products including water and carbon dioxide as well as energy (ATP, heat). Without oxygen, red blood cells convert glucose into energy because they lack mitochondria. ATP, heat, and lactic acid are produced as a result. Muscle cells also use glucose as a source of energy. Muscle cells are, well, double-jointed when it comes to converting glucose into energy. They can metabolize glucose with oxygen because they contain mitochondria. However, if the muscle cell's oxygen level plummets, the cells can simply convert glucose into energy on their own without it. When you have been working out so hard that you are physically out of breath, this is most likely to occur.
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Answer:
chemical energy
Explanation:
chemical energy is most likely found in foods
Develop a mind map representing the narrative of the historical development of technology and the impact of IKS throughout the history of humanity.
Indigenous Information System (IKS) is the body of knowledge that communities have accumulated over many generations as a result of their interactions with the environment.
Indigenous Knowledge System (IKS): What is it?The technological, economic, philosophical, educational, and governing systems are all included in the indigenous knowledge system.
Prior to the development of the contemporary scientific knowledge system, indigenous societies established their own knowledge, which is included in indigenous knowledge systems (IKS).
Acupuncture from China is an illustration of IKS. Through the preservation and wise use of biodiversity, it may significantly advance sustainable development.
There is a definite need to preserve these systems, acknowledge their worth, and stop their destruction in order to strengthen indigenous knowledge practices and cultures.
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For which of these questions could a testable hypothesis be developed? Check all that apply.
Does the width of a rubber band affect how far it will stretch?
How does the thickness of a material affect insulation?
Which of Nikola Tesla's inventions was the coolest?
Do all objects fall to the ground at the same speed?
Which laboratory experiment is the most fun?
The following are the questions in which a testable hypothesis be developed:
Does the width of a rubber band affect how far it will stretch?How does the thickness of a material affect insulation?Do all objects fall to the ground at the same speed?Thus, the correct options are 1, 2, and 4.
What is Hypothesis?A hypothesis may be defined as a proclamation or group of information which is mandated to be experimented with using an investigation procedure.
The width of the rubber is a variable quantity that can be measured, observed, and recorded in the conclusion. Similarly, the thickness of the material is also varied with respect to certain terms and conditions, and hence can be measured observed, and recorded in the experimental data.
Therefore, it is well described above.
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Answer:
person on top is right its 1 2 and 4
Explanation:
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see the attached image
The genotype that might be present in the egg is AgB. Thus, the correct option is C.
What is Meiosis?Meiosis may be defined as a type of cell division where a parental cell produces four daughter cells. It is also known as Reductional division.
During the egg formation in meiosis, the diploid cell undergoes cell division and a haploid cell will be formed.
During the process of meiosis, both pairs of homologous chromosomes are paired with each other to form the genotypes. It excluded the phenomenon of crossing over.
Therefore, it is well described above.
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What is located in your upper arm
Answer:
the humerus
Explanation:
Help! Need to get this done fast
Answer:
C. 2 short , 2 long
Explanation:
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Based on the reactivity of catalase in the enzyme concentration lab, do your results in testing enzyme concentration support your hypothesis?
There were more substrate molecules to bond with the active site of the catalase enzyme as the substrate concentration increased.
What is an enzyme?The enzymes are the chemical molecules that alter the chemical reaction when added in a specific amount, it either increases the reaction, or decrease it.
There were more substrate molecules to bond with the active site of the catalase enzyme as the substrate concentration increased.
Because the substrate concentration increased each time, there was a greater chance that the substrate would bind to the active site and carry out the reaction.
Thus, this way the enzyme concentration affects the reactivity.
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Calculate the genotypic and phenotypic ratios for the following crosses in peas for height, determined by the T gene. (T is Tall; t is short.)
homozygous dominant crossed with homozygous recessive
homozygous dominant crossed with heterozygous
homozygous recessive crossed with heterozygous
heterozygous crossed with heterozygous
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which rabbit fur survived the best in a snowy environment
Dichotomy means
O to cut into two parts
O two classifications
O to separate equally
Answer:it means to cut in two parts
Explanation:
Select all that apply.
Hemoglobin _____.
picks up oxygen
has an attraction for carbon monoxide
is found in erythrocytes
has an iron ion
Answer:
computers are widely used for official use even though smart phones can also work as computer
Hemoglobin _____.
picks up oxygen ( ✔ )
has an attraction for carbon monoxide
is found in erythrocytes
has an iron ion
you can see a new plant with beautiful flower when you visit a Botanical Garden what do you do to find out it characters.
What is the purose of using multiple control groups in an experiment?
Answer:
well the answer is yellow
Explanation:
The area around a pond is cooler than the rest of the forest. Which term describes the area around the pond?
The term microclimate best describes the area around the pond.
What is Pond?A pond may be defined as an aquatic habitat which is a tiny body of still water originated naturally or by artificial norms. It is usually smaller than a lake.
A microclimate may be defined as a climate of a small area or a distinct place within a location as distinguished from the surroundings of the complete area.
A microclimate usually involves a very smaller area in contrast to determining the climate of a particular location.
The complete question is as follows:
The area around the pond is cooler than the rest of the forest. Which term describes the area around the pond?
BiomeMicroclimateMacroclimateTherefore, the correct option for this question is B, i.e. microclimate.
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Choose all the definitions below that apply to geopolitics
Group of answer choices
a combination of political and geographic factors relating to a state
a combination of political and geographic factors relating air, water, or oil
a study of the influence of such factors as geography, economics, and demography on the politics and especially the foreign policy of a state
Geopolitics can be given as the study of the influence factors such as geography, economics, and demography on politics and especially the foreign policy of a state. Thus, the correct option is D.
Who coined the term geopolitics?Around the turn of the 20th century, the Swedish political scientist Rudolf Kjellén first used the term "geopolitics," which expanded throughout Europe in the years between World Wars I and II (1918–39) before becoming widely used during the latter. Geopolitics is frequently used as a colloquial term for international politics in modern speech.
After World War II, geopolitical theory lost favor due to its links to imperialistic Japanese and Nazi German aggression as well as because the development of nuclear weapons and ballistic missiles diminished the importance of geographical variables in the global strategic balance of power.
The definition of geopolitics stands for the analysis of the factors including geography, economics, and demography on politics and foreign policy. Thus, option D is correct.
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