I really need help with this one

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.

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.

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 .

Answer: mutualism

Explanation:

According to the information given in the question, the relationship between a crocodile and a leech is an example of Commensalism.

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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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.

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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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!

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.

Answer:

Is biomass in the rainforest an energy source or energy sink

Explanation:

Answer:

The answer is option A

Kreb's cycle take place in mitochondria

Whereas electron transport chain in the inner membrane

And glycolysis occurs in cytoplasm

Explanation:

The steps of cellular respiration that occur in the mitochondria are:

A. Krebs Cycle

C. Electron Transport Chain

Cellular respiration can be defined as series of metabolic reactions typically occurring in all living cells, so as to produce energy in the form of adenosine triphosphate (ATP).

Basically, there are three (3) main steps involved in cellular respiration and these include:

Krebs cycle is an aerobic reaction that occur in the mitochondria of both prokaryotic and eukaryotic cells and in the presence of oxygen, to produce carbon dioxide (), two (2) adenosine triphosphate (ATP), six (6) NADH, and two (2) FADH.

Similarly, electron transport chain is also an aerobic reaction that occur in the mitochondria.

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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

Answer:

3rd

Explanation:

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.

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.

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.

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.

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 .

these are studies of BIOLOGY

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:

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

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.

CHILE DO U GO TO BLAIR HIGH SCHOOL

they both impact people and animal life

Explanation:

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.

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]

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.

Answer:

(D) .    the conversion of ADP to ATP using light energy

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.

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.

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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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.

Answer:

The molecules are attracted to their less negative side.

Explanation:

The Oxygen in the water molecule will share or the hydrogens lone atom leaving the hydrogen with a more positive charge like in the picture I've added. This happens with all water molecules leaving the oxygen with more electrons and ultimately the more negative side. And positive and negative forces attract, so the now "positive" hydrogens will bond with the now "negative" oxygens. They form bonds using polarity, and use a very strong dipole dipole effect.

Answer:

A

Explanation:

the best choose is A..........

Answer:

A double helix

Explanation:

if some apeks users have the same answer choice as me