Which of the following statements is correct?
DNA reads and translates the RNA code.
DNA synthesizes protein.
RNA reads and translates the DNA code.
RNA contains the genetic code.
Answer:
3rd
Explanation:
Complete the sentence choosing from the following words:
catalyse, denatured, digest, soluble, insoluble, energise, excreted, ingested
Digestion is the process of breaking down large food molecules into smaller molecules that are ________ .
Enzymes help to break down food because they ________
chemical reactions.
If the temperature of an enzyme gets too high, the enzyme is ________ .
Answer:
1. Soluble
2. Catalyze
3. Denatured
Explanation:
1. We eat in order to obtain energy. However, this food is often in a complex state and needs to be broken down into its simplest form. The process of digestion ensures this occurs in living organisms. Digestion is the process of breaking down large food molecules into a much more simpler molecule that can be passed on to the blood stream for absorption by cells. These simpler molecules must be SOLUBLE in water for them to be transported into each cell via the bloodstream.
2. The breaking down of food molecules described above is facilitated by certain proteinous chemical agents called ENZYMES. Enzymes are biological catalysts i.e. they help speeden up the rate of biochemical reactions in living systems. In the case of digestion, specific enzymes chemically acts on specific food molecules. For example, amylase acts on carbohydrates, protease acts on proteins etc.
3. As stated above that enzymes are proteinous, it means they possess the characteristics of proteins. One of those characteristics is the ability to get denatured by increase in temperature. High temperature causes an enzyme to lose its specific 3D shape, affecting its functionality. Hence, the enzyme is said to be DENATURED.
When vinegar and baking soda react, the mixture becomes cold to the touch and a gas and a new liquid substance are formed. Which best describes what is occurring in the reaction?
Answer:
answer B The reaction is chemical and exothermic.
Explanation:
because on my quiz its b.
The described chemical interaction between vinegar and baking soda is an endothermic reaction since it involves the absorption of energy, which causes the mixture to become chilly. The correct option is A.
What is endothermic reaction?A chemical reaction that is endothermic is one that increases the system's enthalpy through a thermodynamic process. A system engages in this process by absorbing energy from the environment, primarily thermal energy.
As a result, an endothermic reaction causes the system's temperature to rise while the environment's temperature drops.
Bonds are typically formed during endothermic processes, which demand energy input. Entropy of the environment is reduced during endothermic reactions.
Endothermic reactions frequently entail physical rather than chemical changes. The potential energy of the products exceeds that of the reactants in an endothermic process.
Thus, the correct option is A.
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Your question seems incomplete, the missing options are:
The reaction is chemical and endothermic.
The reaction is chemical and exothermic.
The reaction is non-chemical and endothermic.
The reaction is non-chemical and exothermic.
Albinism is inherited as autosomal recessive trait. The frequency of the disease in the population equals to 1:20 000. Calculate frequency of heterozygotes in population.
Answer:
0.0139- frequency of heterozygotes in the population
Explanation:
Let q to the power of 2 represents the frequency of the homozygous recessive (aa) = 1/20000 = 0.00005
This, q = √q^2 = √0.00005 = 0.007
Since p + q = 1
p = 1 - 0.007 = 0.993
Using the formula: p^2 + 2pq + q^2
Where 2pq represents the frequency of the heterozygotes, thing we have
2 x 0.007 x 0.993
= 0.0139
Which is the best description of photophosphorylation?
the absorption of light energy by chlorophyll
the conversion of light energy to chemical energy
the removal of a phosphate group from a molecule
the conversion of ADP to ATP using light energ
Answer:
(D) . the conversion of ADP to ATP using light energy
how does the size of a hydrocarbon molecule affect the volatility of crude oil?
Answer:
Longer hydrocarbon molecules have a stronger intermolecular force. More energy is needed to move them apart so they have higher boiling points . This makes them less volatile and therefore less flammable .
A neutral atom has the same number of protons as it does electrons.
True or false
Answer:
true
Explanation:
if it is neutral it has no charge
One of the first explanations of evolution was put forth by a French biologist, Jean-Baptiste
Lamarck. He theorized that animals, in responding to different environments, adopted new
habits. Their new habits caused them to use some organs more and some organs less, which
resulted in the strengthening of the former and the weakening of the latter. New characters
thus acquired by organisms over the course of their lives were passed on to the next
generation. His theory proposed this process of use and disuse, repeated over many
generations, was how species evolved.
He was wrong. Why?
Answer:
Traits acquired during an organism's lifetime cannot be passed
Explanation:
The law of use and disuse of organs as postulated by Jean Lamarck was wrong due to the fact that environmentally acquired characters cannot be passed to offspring.
Changes to organisms that are not the level of the gene cannot be passed to the offspring. For example, a wrestler that got big muscles due to constant work out cannot pass big muscles to his offspring. The offspring will need to work out in order to have big muscles. This is because big muscles in the wrestler is environmentally acquired.
Only changes that happen to the genome of an organism (mutation) can be passed to offspring.
The part of a nucleus with neither a positive nor a negative charge.
Answer:
Unlike protons that have a positive charge, and electrons that have a negative charge, neutrons are neither positive nor negative; they are neutral. Neutrons and protons are what make up the nucleus of the atom
Answer:neutron
Explanation:
From the word neutron means its doesn't carry any charges .
The nitrogenous bases in DNA are held together by... A. Covalent Bonding
B. Iconic bonding
C. Hydrogen bonding
D. Van der Waals forces
Answer:
Hydrogen bonding
Explanation:
The nitrogenous bases form hydrogen bonds between opposing DNA strands to form the rungs of the twisted ladder or double helix of DNA.
where is most glucose absorbed into the blood
3. Nowadays many people are using sunscreen lotions as per doctor's advice to protect
themselves from cancer of skin. When asked, the teacher told the class about a protective
cover of earth which is fast depleting due to a human activity. Name this cover and which
activity is the teacher referring to? Discuss in detail.
Answer:
Ozone layer... pollution
Explanation:
The ozone layer is a layer in the atmosphere which provides a barrier between harmful UV rays and the Earth. However, pollution is quickly depleting the layer which in turn creates a higher risk of skin cancers and other conditions caused by harmful UV rays.
what is the..............
.....part of the living material
Answer:
hey! hope this helps love!
The cell is the smallest unit of living material capable of carrying on all activities necessary for life. ... Only animal cells are without a cell wall. Protoplast is the living part of the cell inside the cell wall and includes the cell membrane and the protoplasm.
Which inheritance pattern is more likely to affect males than females?
Answer:
karyotype. A display of the homologous chromosome pairs of a cell arranged by size and shape. hemophilia. -bleeding disorder where the blood fails to clot properly.
Explanation:
If the father has the pattern than more likely the son will get the gene. Same goes for the mother and daughter.
What is the role of the MCR1 gene in determining a populations fitness for survival???please help it’s do today
CHILE DO U GO TO BLAIR HIGH SCHOOL
Was it beneficial or harmful for the Balanus barnacle to add the Chthamalus barnacle? Explain
Answer:
harmful. (more info below)
Explanation:
Balanus may compete with Chthamalus through crowding or smothering, but Chthamalus can inhabit higher tide levels than Balanus since it is more immune to desiccation. Lower on the sea, the barnacles of acorn combine with the Endoclades (Turfweed) assemblage, and are also abundant on the shells of acorn. To conclude, it was a bad idea is add the balanus barnacle to the Chthamalus barnacle becuase balanus barnacles can crowd Chthamalus barnacle.
hope this helped!
Is biomass in the rainforest an energy source or energy sink
Answer:
Is biomass in the rainforest an energy source or energy sink
Explanation:
Cures and medicines for diseases, such as diabetes, can be credited to the study of _____.
these are studies of BIOLOGY
Some salmon have been genetically modified to grow bigger and mature faster than wild salmon. They are kept in fish facilities. Which statement regarding genetically modified salmon is correct
Salmon that have been genetically engineered have generated debate because of worries about the potential environmental and health effects if they were to escape and interact with native populations.
How is the genetic makeup of salmon altered?Canadian researchers patented genetically altered (GM) salmon after introducing a promoter—the genetic equivalent of a "on-off" switch—from an ocean pout and a gene that controls growth hormones in Pacific Chinook salmon into the genetic makeup of an Atlantic salmon.
Do wild salmon contain genetically engineered fish?All Atlantic salmon, including genetically modified (GM) salmon, is farmed salmon. Because Atlantic salmon is an endangered species, there is no natural fishery.
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Leeches often attached to the tongue of a crocodile and consume the crocodiles blood as food the Egyptian Plover is a bird that flies into the mouth of the crocodile and eats the leeches the crocodile do not harm the plovers the relationship between a crocodile and the leech is an example of _________?
Answer: mutualism
Explanation:
According to the information given in the question, the relationship between a crocodile and a leech is an example of Commensalism.
What do you mean by Species interaction?Species interaction may be defined as a type of biological phenomenon through which the population of one species interacts with populations of other species that live in the same locality. There are various types of species interaction that can commonly be found in the nature and ecosystem.
According to the context of this question, the individuals of leeches attached to the tongue of a crocodile consume the crocodile's blood as food. In this way, the population of leeches gets benefits from the crocodile by taking their blood as a source of food and energy.
The Egyptian Plover is a bird that flies into the mouth of the crocodile and eats the leeches the crocodile does not harm the plovers. In this way, crocodiles do not get any harm or benefit from the population of leeches. So, this type of + and 0 interaction is known as Commensalism.
Therefore, the relationship between a crocodile and a leech is an example of Commensalism.
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one similarity between natural and biological disasters
they both impact people and animal life
Explanation:
How does the amount of carbon the us emits compare to the other countries
The U.S emitted 5.1 billion metric tons of energy-related carbon dioxide, while the global emissions of energy-related carbon dioxide totaled 32.5 billion metric tons.
The best method to reduce the threat of overfishing would be to . The risk of oil spills could be reduced by increasing the use of , which should help oil consumption. If an oil spill does occur, could be used to help remove the oil so the ecosystem may more quickly recover.
Answer:
The best method to reduce the threat of overfishing would be to limit the harvest of particular fish species. The risk of oil spills could be reduced by increasing the use of renewable energy sources , which should help decrease oil consumption . . If an oil spill does occur, bioremediation could be used to help remove the oil so the ecosystem may more quickly recover.
Explanation:
African penguins, which inhabit the coasts of southern Africa, were classified as an endangered species in 2010. Two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. Overfishing depletes the food supply of African penguins.
The best method to reduce the threat of overfishing would be to____
1. Construct a corridor to connect penguins and fish
2. Limit the harvest of particular fish species
3. perform a population survey on several fish species
The risk of oil spills could be reduced by increasing the use of
1. Natural resources
2. Renewable energy sources
3. Nonrenewable energy sources
, which should help______ oil consumption
1. Increase
2. Decrease
. If an oil spill does occur, __________ could be used to help remove the oil so the ecosystem may more quickly recover.
1. Bioremediation
2.reforesation
3. recycling
Overfishing can be prevented by formulating policies to limit the harvest of fishes on the basis of species they belong to.
Opting for renewable energy, such as solar or wind energy, would greatly reduce the dependence on non-renewable energy sources such as fossil fuels. Reduction in oil dependence will in turn reduce the risk of oil spillage into the environment. as well as reduce oil consumption.
Spilled oil can be removed from the ecosystem by relevant bioremediation processes. Bioremediation involves the use of biological species to clean up pollutants (such as spilled oil) from the environment.
Answer:
blank 1- limit the harvest of particular fish species
blank 2- renewable energy sources
blank 3- decrease
blank 4- bioremediation
The best method to reduce the threat of overfishing would be to limit the harvest of particular fish species. The risk of oil spills could be reduced by increasing the use of renewable energy sources , which should help decrease oil consumption . . If an oil spill does occur, bioremediation could be used to help remove the oil so the ecosystem may more quickly recover.
Explanation:
8 What does the sample space represent?
Answer:
In probability theory, the sample space (also called sample description space[1] or possibility space[2]) of an experiment or random trial is the set of all possible outcomes or results of that experiment.[3] A sample space is usually denoted using set notation, and the possible ordered outcomes are listed as elements in the set. It is common to refer to a sample space by the labels S, Ω, or U (for "universal set"). The elements of a sample space may be numbers, words, letters, or symbols. They can also be finite, countably infinite, or uncountably infinite.[4]
For example, if the experiment is tossing a coin, the sample space is typically the set {head, tail}, commonly written {H, T}.[5] For tossing two coins, the corresponding sample space would be {(head,head), (head,tail), (tail,head), (tail,tail)}, commonly written {HH, HT, TH, TT}.[6] If the sample space is unordered, it becomes {{head,head}, {head,tail}, {tail,tail}}.
For tossing a single six-sided die, the typical sample space is {1, 2, 3, 4, 5, 6} (in which the result of interest is the number of pips facing up).[7]
A subset of the sample space is an event, denoted by E. Referring to the experiment of tossing the coin, the possible events include E={H} and E={T}.[6]
A well-defined sample space is one of three basic elements in a probabilistic model (a probability space); the other two are a well-defined set of possible events (a sigma-algebra) and a probability assigned to each event (a probability measure function).
Another way to look as a sample space is visually. The sample space is typically represented by a rectangle, and the outcomes of the sample space denoted by points within the rectangle. The events are represented by ovals, and the points enclosed within the oval make up the event.[8]
LAST QUESTION WILL GIVE BRAINLIEST!!!!!PLS SHARE YO SMARTNESS!!!!!!!
1. Which two substances have parts of their cycles in which the substance must be "fixed"?
A) nitrogen and water
B) sulfur and oxygen
C) water and phosphorous
Answer:
its carbon and nitrogen
Explanation:
took the quiz
Carbon and nitrogen are two substances that have parts of their cycles in which the substance must be "fixed". Thus, the correct option for this question is D.
What is Cycle?A cycle may be defined as the series of steps that regularly run in a repeated manner to deliver the needs of organisms. Examples include the carbon cycle, the water cycle, etc.
Carbon is found as a solid in all of their isotopes but nitrogen is typically a gas that is present in 78% of the earth's atmosphere.
Option D is missing in the question which is carbon and nitrogen.
Therefore, the correct option for this question is D.
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what are the raw mineral needed for photosynthesis
Answer:
Water and carbon dioxide
Explanation:
Water and carbon dioxide in the presence of light, enter the cells of the leaf, where, in the presence of chlorophyll, photosynthesis takes place and sugar and oxygen are produced.
Which best describes the structure of a DNA molecule?
Answer:
A
Explanation:
the best choose is A..........
Answer:
A double helix
Explanation:
if some apeks users have the same answer choice as me
If you have the two traits for a plant include T-tall, t-short, G-green seed and g-yellow seed. If you cross a homozygous tall, yellow seeds (Parent 1), with a herezogous for both traits (parent 2), match the following.
Hint: do the cross
Column A
1.
TTgg:
TTgg
2.
TtGg:
TtGg
3.
1:1:1:1:
1:1:1:1
4.
2:2:
2:2
5.
What percent will be Tall with yellow seed:
What percent will be Tall with yellow seed
6.
TTGg, TtGg:
TTGg, TtGg
Column B
a.Parent 1
b.50%
c.Genotype Ratio
d.TTgg, Ttgg
e.Phenotype Ration
f.Parent 2
g.75%
h.25%
i.Genotypes for tall, green seed
Answer:
1. Parent 1 is TTgg
2. Parent 2 is TtGg
3. The genotype ratio is 1:1:1:1
4. The phenotype ratio is 2:2
5. 50% has tall and yellow seeds
6. Genotype for tall and green seed is TTGg, TtGg
Explanation:
The parent 1 is homozygous tall, yellow seeds, therefore the genotype is TTgg, While parent 2 is herezogous for both traits, therefore the genotype is TtGg.
Crossing the two parents gives children with the following traits:
Parent 1 gamete: Tg Parent 2 gamete: TG Tg tG tg
TTGg, TTgg, TtGg, Ttgg
The cross gives: TTGg, TTgg, TtGg, Ttgg
Therefore, 2 is tall and green, 2 is tall and yellow
The phenotype ratio is 2:2
The genotype ratio is 1:1:1:1
1. Parent 1 is TTgg
2. Parent 2 is TtGg
3. The genotype ratio is 1:1:1:1
4. The phenotype ratio is 2:2
5. 50% has tall and yellow seeds
6. Genotype for tall and green seed is TTGg, TtGg
What is the relationship between the nucleotides, nucleic acids, and DNA?
Answer:
Explanation:
Nucleotides are building blocks of nucleic acids (DNA and RNA). A nucleic acid contains a chain of nucleotides linked together with covalent bonds to form a sugar-phosphate backbone with protruding nitrogenous bases. For example, DNA contains two such chains spiraling round each other in the famous double helix shape.
What the walls of small intestine produces?
Answer:Mucous
Explanation: