The table below compares three galaxies the information about galaxies is correct in

Answer:

It protects the new plant.

Answer: A y B son correctas

Explanation:

Answer:

Igneous rocks have a wide variety of uses. One important use is as stone for buildings and statues. Diorite was used extensively by ancient civilizations for vases and other decorative artwork and is still used for art today. Granite is used both in building construction and for statues.

Answer:

Different protists use cilia, flagella , or pseudopodia to move.

Answer:

The age difference between the oldest and the youngest is 48.

Explanation:

Given the following data;

The ratio of the ages of Kisii (K) and Esinam (E) is 3:5.

The ratio of the ages of Esinam (E) and Larry (L) is 3:5.

The sum of the ages of all three is 147.

Since the age of Esinam is common in both ratios, we find the lowest common multiple (LCM);

LCM of 3,5 = 15.

Hence, the ratio of the three ages is now;

K:E:L = 9:15:25

Let their ages be denoted by x;

[tex]K:E:L = 9x:15x:25x[/tex]

The sum of all three ages is;

9x + 15x + 25x = 147

49x = 147

x = 147/49

x = 3.

To find the age difference between the oldest and the youngest;

The oldest is Esinam = 25x

The youngest is Kisii = 9x

Therefore, 25x - 9x = 16x

Substituting the value of x, we have;

x = 3; 16x = 16(3) = 48.

The age difference between the oldest and the youngest is 48.

Answer:

All of the above.

Explanation:

Regulation of the expression of genes refers to different processes tge cells use to increase or decrease the production of some gene content. It involve Turing gene on and off so as to ensure that appropriate genes are expressed at the right times. This allow organism to respond to changes in their environment.

Answer:

This statement is partially true.

Explanation:

There are many phenotypic features that display a quantitative mode of inheritance and exhibit a continuous range of variation.  Hair color is controlled by different genes that work together to express this trait. In consequence, this trait has a polygenic mode of inheritance, where a particular phenotype depends on both additive and dominance genetic effects. The most important gene associated with the hair color is Melanocortin 1 Receptor (MC1R), which is involved in the biosynthesis pathway that controls the synthesis of melanin.

Answer:

In strict mode, the narrow-sense heritability is the proportion of the additive genetic variance that contributes to the total of the phenotypic variance. This value can be associated with the inheritance of the a-thalassemia .

Explanation:

A-thalassemia is a genetic disorder caused by mutations affecting four different genes that encode alpha-globin, thus affecting the hemoglobin production process and, consequently, oxygen transport. The mode of inheritance of the a-thalassemia may be associated with narrow sense heritability since the phenotype is manifested by gradation, i.e., each allele might contribute in similar mode to this genetic condition.

Answer:

D

Explanation:

Denaturation occurs when the protein deforms and loses its structure.

According to the question, A protein is exposed to extremely high heat, causing it to lose its secondary structure and be left with only its primary structure.

A protein becomes denatured when its normal shape gets deformed because some of the hydrogen bonds are broken.

Weak hydrogen bonds break when too much heat is applied or when they are exposed to an acid.

Thus, option "D" is correct.

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Answer:

The correct answer is ecological succession.

Explanation:

For the growth and development of an ecosystem, the phenomenon of ecological succession plays an essential role. A slow procedure by which the ecosystems modify and develop with time is termed as the ecological succession. There are prime two kinds of succession, that is, primary succession and secondary succession.  

The phenomenon of ecological succession helps in the colonization of the novel areas, and in the recolonization of the destructed ecosystems, this helps the species to get amend with the modifications taking place in the surroundings and helps them to thrive. The given case is an illustration of ecological succession as the flowing of lava creates barren land, which further helps in the establishment of the pioneer plants. These pioneer species of plants helps in the development of a new ecosystem.  

Answer:

Starch and water will be the best negative control

Explanation:

Negative control sample is a sample that will not give change in an experiment.

Starch and water will be the best negative control. This is because, starch is broken down by HCl to monosaccharides in the Benedict test which is the test for reducing sugar

Distilled water remain a negative control because it remain blue which means it does not reduce sugar with starch solution.

Water plus us a negative control for Buiret test (protein) and Benedict(reducing sugar) because it does not indicate the presence of protein and reducing sugar.

Answer:

true

Explanation:

the cell becomes two

Yes, this statement is TRUE cells will generally divide when they're too large

The larger a cell becomes, the more demands the cell places on its DNA. If the cell grows too large, it will have trouble moving enough nutrients and wastes across the cell membrane.

The mitotic phase follows interphase. Mitosis is nuclear division during which duplicated chromosomes are segregated and distributed into daughter nuclei. Usually the cell will divide after mitosis in a process called cytokinesis in which the cytoplasm is divided and two daughter cells are formed.

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Answer:

Processes. Plants take up essential elements from the soil through their roots and from the air through their leaves. Nutrient uptake in the soil is achieved by cation exchange, where in root hairs pump hydrogen ions (H+) into the soil through proton pumps

hope i helped !!

Answer:

water, sun, soil

Explanation:

Plants absorb nutrients and water through their roots, but photosynthesis occurs in the leaves. So, plants need to get fluids and nutrients from the ground up through their stems to their parts that are above ground level.

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Answer:

B. Arm length

C. Shape

D. Centromere placement

Explanation:

Cytogenetics is a discipline that study the structure and number of chromosomes including their morphology, position of the centromere, arm length, staining bands, etc. These features can be observed by microscope and enable us to identify different genome rearrangements (i.e., translocations, deletions, centric fusion, chromosome duplications, etc.) by ilustrating chromosomes in defined pictures referred to as karyotypes. In consequence, they are chromosome features that can be used in order to categorize different samples.

Answer:

-1 I believe

Explanation:

Answer:

Enzymes and substrates fit together like a lock and key since, in one enzymatic reaction, only the correct substrate (i.e., the key) binds to its corresponding enzyme (i.e. the lock).  

Explanation:

An enzyme (or catalyst) is one protein that has catalytic functions, being therefore capable of accelerating chemical reactions. The enzymes are known to control the rate of these chemical reactions (i.e., catalysis) without suffering alterations during these processes. Thus, the enzymes are proteins that catalyze chemical reactions that are not favored under normal conditions. Moreover, one enzyme may catalyze more than one chemical transformation, as well as the same reaction may be catalyzed by two or more enzymes.

Answer:

transcription

Explanation:

transcription of DNA by tRNA is the first step of protein synthesis

Answer:

Transcription.

Explanation:

Answer:

C.  15%  15%  35%

Explanation:

This follows the rules of base pairing.  The amount of thymine (T) equals the amount of adenine (A), and the amount of guanine (G) equals the amount of cytosine (C).

Since thymine is equal to adenine and 35% of the bases is thymine, 35% of the bases is also adenine.  This gives you a total of 70%.

35% + 35% = 70%

Now you need to figure out how much cytosine and guanine are in the bases.  Since 70% of the bases are adenine and thymine, 30% will be cytosine and guanine.

100% - 70% = 30%

Since the amount of cytosine and guanine are equal, divide 30% by 2 to figure out how much each base takes of the total.

30/2 = 15%

Cytosine and guanine each take up 15% of the molecular bases.

The given question is incomplete, the complete question is:

Consider a simplified metabolic model to describe nitrogen metabolism in the body. Nitrogen is ingested in the food (F), a fraction of which is actually absorbed (A), the remainder being lost in the feces (W). The absorbed nitrogen is taken up by the muscle to make protein. At small fraction of the stored muscle protein undergoes degradation and the liberated nitrogen (L) is released from the muscle. Of the liberated nitrogen, a fraction is recycled back to the muscle (R), while the rest is lost to excretion (E) in the urine. If the nitrogen ingested in food is 100 g/day, but only 80% of the food is actually absorbed, while the rest goes to waste, what is the amount of nitrogen lost by excretion? Assume steady-state. Of the nitrogen liberated from muscle, 90% is excreted, while the rest is recycled, what fraction of the nitrogen entering the muscle is from the absorbed food? (In other words, what is the ratio A/(A+R)). Again, assume steady-state

Answer:

The amount of nitrogen lost in the process is 20 grams in a day and the fraction of nitrogen entering the muscle is 0.909.

Explanation:

Based on the given question, the amount of nitrogen absorbed is 80 percent of 100 grams, that is,  

100*(80/100) = 80 grams in a day.  

The concentration of nitrogen lost in the process is,  

Nitrogen ingested-nitrogen absorbed = 100-80 = 20 grams in a day.  

Let us assume that all the ingested nitrogen is liberated from the muscle. Therefore, 80 grams of nitrogen is liberated. If 90 percent of the nitrogen liberated from the muscle get excreted, then the value of excreted nitrogen will be,  

90% of 80 grams = 90/100*80 = 72 grams

Now the nitrogen recycled will be,  

Liberated nitrogen - excreted nitrogen = 80-72 = 8 grams

From the absorbed food, the fraction of the nitrogen entering the muscle will be,  

80/(80+8) = 80/88 = 0.909.  

Answer: D trust me on this

Explanation:

the rocks contain iron that points in different directions depending on earths polarity

The polarity of Earth affects the iron in the rocks, which points in various ways, so rocks on the ocean floor form a pattern of magnetized stripes.

The idea of paleomagnetism, according to which the arrangement of the earth's tectonic plates depends on the iron present in magma, is one of the theories explaining seafloor spreading. The positive and negatively charged ions are represented by the stripes.

The magnetic strips, also known as magnetic anomalies, are identified by white and black strip patterns. They have ions that are positively and negatively charged. As a result, the magma magnetizes with the Earth's magnetic field when it emerges from the ridges.

Therefore, the polarity of Earth affects the iron in the rocks, which points in various ways.

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Answer:

Formed elements of the blood are too large to fit through the filtration slits of the filtration membrane. ... Nephron tubules cannot reabsorb large proteins and cells that enter the filtrate.

Answer:

Osmosis

Explanation:

In this case, osmosis has occurred, and that is why the movement of the flagellum stops.

It should be understood that osmosis is the movement of substances from the region of lower concentration to the region of lower concentration through a semi- permeable membrane.

Answer:

A lethal mutation, thereby the resulting phenotype is not observed .

Explanation:

Lethal mutations are the result of genomic changes that may be lethal in certain conditions. In genetic research, this type of mutation has shown to be very useful in analyzing gene function (i.e., genes whose protein products are key for the survival of the organism in question), and they are perfect gene markers. In bacteriophages, for example, temperature-sensitive mutants of phage T4 that can not grow at temperatures higher 42°C have been identified (Edgar & Lielausis 1964).

Citation:

R. S. Edgar, & I. Lielausis (1964). Temperature-sensitive mutants of bacteriophage T4D: their isolation and genetic characterization. Genetics, 49(4), 649.

Answer:

The correct answer is "secondary succession, an ecological succession step where an area previously occupied by living beings is disrupted".

Explanation:

In ecological succession, an ecosystem changes and develops through a series of steps. The first step, is the primary successional stage where rocks or other sedimentary structures are colonized by microorganisms. The second step, where the ecosystems changes towards a relatively-stable mature stage, occurs when an area previously occupied by living beings is disrupted. This step is named secondary succession, and the most clear example of this phenomena occurs when wildfire clears oak and hickory forests.

Answer:

A) True

John Marshall Clark a pesticide toxicologist recently discovered in one his studies at the University of Massachusetts that about 67% to 75% of lice are no longer affected adversly by insecticides.

B) True

An alternative to the theory of evolution is the Theistic Evolution.

C) True

Creationism or Special Creation is one of the ideas of evolutions which tries to offer a better explanation to the origin of the universe.

D) False

An example would be the winds of Bees, Bats and Birds. They all use wings (with similar structure) to fly however, their origins as explained by evolution are quite different taking into conginsance how they are formed at the embryo stage.

E) True

To understand evolution, we have to study and obtain as much as possible, all the information that a fossil can provide. Many times, these information provide substantial elements which support the theory.

F) False

Evolution is a theory which scientists have accepted as ONE of the several explanations of the origins of the human species. There are other competing theories.  

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Answer:

The needle loop is use to transfer fungi to a soft agar and this will cause or create more fungal growth to occur in the slide.

Explanation:

Needle loop is a tool or device use in microbiology to inoculate microorganisms like bacteria and fungi in media to boost their growth. It is use for sampling and transferring specimens or microorganisms into a media for further analysis, examination and serial dilution.

Answer:

A gene is a short section of DNA. your genes contain instructions that tell your cells to make molecules called protein

Answer:

Basically gene produces a functional product such as a protein which regulates the functioning of our cells via carrying out different processess.

Explanation:

Genes are short segments of our DNA that code for functional products such as proteins. Proteins basically do everything in your cells and your phenotype (what you look like and how you cells behave) everything is controlled by these functional products that a gene makes.

Answer:

9 + 10 = 19

the answer is = 19

Answer:

The definition of the problem is listed in the explanation segment below.

Explanation:

        ⇒  [tex]Mother \ aa\times Father \ aa[/tex]

        ⇒  [tex]a\times a[/tex]

So that the above is the right answer.

Answer:

Electron transport inhibitors: Cyanide, Rotenone

Uncoupling agents: trifluorocarbonylcyanide phenylhydrazone (FCCP)(FCCP)

ATP synthase inhibitors: Oligomycin

Transport inhibitors: Bongkrekic acid

Explanation:

Electron transport inhibitors: Cyanide, Rotenone

Cytochrome oxidase also known as complex IV in the electron transport chain, carries electrons from cytochrome c to oxygen. It is a large enzyme having 13 subunits. Subunit  1 contains  two heme groups , a and a3. Electrons are tranferred from heme a to oxygen bound to heme a3. The reaction of cyanide with heme a3 blocks this process of eleron transport

.Rotenone blocks electron transfer at NADH dehydrogenase (NAD−Q(NAD−Q oxidoreductase) by preventing electron transfer from Fe-S center to ubiquinone.

Uncoupling agents: trifluorocarbonylcyanide phenylhydrazone (FCCP)(FCCP)

The transfer of electrons  from NADH through the respiratory chain to molecularoxygen is coupled to proton pumping from the inner mitochondrial matrix to the intermembrane space. This generates a proton motive force which is utilized in ATP synthesis. Trifluorocarbonylcyanide phenylhydrazone (FCCP)(FCCP) increases membrane proton permeability, causing protons to leak back into the mitochondrial matrix, thereby uncoupling the processs of ATP synthesis and proton flux.

ATP synthase inhibitors: Oligomycin

ATP synthase is the enzyme rensponsible for ATP synthesis. It has two functional domains,: F₁ and F₀. Oligomycin binds to F₀ and blocks the proton channel preventing rotation of the F₁ subuni, thus, preventing ATP synthesis from ADP.

Transport inhibitors: Bongkrekic acid

Adenine  nucleotide translocase is a transport protein that  transports free ADP from the cytoplasm into the mitochondrial matrix, while ATP produced from oxidative phosphorylation is transported from the mitochondrial matrix to the cytoplasm o the cell.

Bongkrekic acid inhibits Adenine nucleotide translocase, thus preventing ATP from leaving the mitochondria and starving cells of needed energy.