Water and land has formed on earth, but why is life still impossible?

The majority of these methods, such as reverse transcription polymerase chain reaction (RT-PCR) and microarray analysis, gauge mRNA levels. Yet using a method called a Western blot, researchers can also quantify protein levels directly to study gene expression.

To learn more about microarrays, refer to:

https://brainly.com/question/14545749

#SPJ1

Answer:

Two different alleles come together and produce both trait forms. Two different alleles come together and produce a trait form that is neither dominant nor recessive. a chromosome that determines the X or Y of an organism.

Answer:Please use the example at the bottom of this page to cite the Purdue OWL in MLA. ... you can use it to document any type of source, for any type of paper, in any field. ... When deciding how to cite your source, start by consulting the list of core ... pieces of information that MLA suggests including in each Works Cited entry.

Explanation:

Answer:

answer is b

Explanation:

i just took the test :3

There is no statement that is NOT part of the Darwin-Wallace theory of natural selection.

The Darwin-Wallace theory of natural selection includes the following four statements:

Therefore, the answer to your question is that there is no statement that is NOT part of the Darwin-Wallace theory of natural selection.

Learn more about natural selection here: https://brainly.com/question/14874301

#SPJ1

Answer:

bar graph can be easily converted to pie chart

Answer:

1d

2d

3c

4c

5a

6 human leech spider jellyfish

7d

8a

9. dum king philip came over from great spain

use the first letter domain kingdom etc

it is d

10 d

11b

12. most of it is molecular (ie DNA and protein structure) but morphological traits (appearance as well as behavior)

Explanation:

Answer:

3

Explanation:

The organism that is not likely to be preserved as part of the fossil record is soft-bodied ones. These organisms are like worms and jellyfish.

Most organisms that live on the sea floor either have shells, bones, or teeth. These organisms might be preserved since bones don't rot, Although some of these organisms get washed away to different places and their remains get buried.

Fossilization for some organisms gets hard for example for worms or jellyfish since they have soft bodies, their bodies often decompose quickly making it impossible to fossilize. Unless their bodies are carefully preserved. Most organisms that are well buried are the ones that have a higher chance of being fossilized. Animals with hard shells, bones, and skeletons are kept well in the fossil record.

To read more about Fossilization visit:

brainly.com/question/6867325

#SPJ4

Answer:

The right answer is D

Explanation:

Here is my answer.

Answer:

C

Explanation:

Matter is what things are so lets say that a solid steel box has a mass of 40 kg. That would mean that it is made of matter simply because it exists.

When recording a customer payment in the receive payment window one should choose a checking account. the correct option is D, checking account.

What is a checking account?

A checking account is a type of bank account that allows individuals or businesses to deposit, withdraw, and manage their funds easily.

Key features of a checking account:

The checking account represents the bank account where the payments will be deposited once they are grouped together. Selecting the Checking account in the Deposit To field, ensure that the received payments are properly tracked and recorded. This allows you to later group multiple payments for deposit to the bank.

Therefore, the correct option is D.

To know more about Checking accounts, click here:

https://brainly.com/question/3212795

#SPJ4

Bicarbonate is an important buffer in blood and its concentration is regulated by the kidneys.

The bicarbonate buffer system is indeed an acid-base homeostatic mechanism that involves the balance of carbonic acid, bicarbonate ion, and carbon dioxide to support proper metabolic function in the blood as well as duodenum, among other tissues.

The most important buffer for maintaining blood pH homeostasis is indeed the Carbonic Acid-Bicarbonate buffer system. Carbonic acid is formed in this system when gaseous metabolic end carbon dioxide reacts to water to produce carbonic acid, that also rapidly dissociates into the a hydrogen ion as well as bicarbonate.

This same bicarbonate buffer system inside the human duodenum and the stomach serves to neutralize gastric acid while also stabilizing the intracellular ionic strength of epithelial cells through the secretion of carbonic acid into the gastric mucosa.

To know more about the Bicarbonate, here

https://brainly.com/question/13929437

#SPJ4

Answer:

This question is incomplete

Explanation:

This question is incomplete because of the absence of the video. However, the addition of sulphuric acid (H₂SO₄) to sugar produces what is known as sugar charcoal through the process of dehydration of the sugar. The process described below should be similar to what is in the video as the process is the same and provides the same result.

When the acid is added, there is a change in the colour of the sugar from white to brown (evidence of initial reaction) and then subsequently black (further change). As the reaction continues, there is an observable increase in size of the sugar (further change and how we know reaction is occurring).

Answer:

Species evolve over time as a result of

- the potential for a species' population to increase.

- genetic differences in offspring due to mutation and the recombination of genes.

- a limited supply of necessary resources.

- selection by the environment of offspring that are best able to survive and reproduce.

Explanation:

NOT random mating within a species

Answer:

Species evolve over time as a result of

the potential for a species' population to increase.

genetic differences in offspring due to mutation and the recombination of genes.

a limited supply of necessary resources.

selection by the environment of offspring that are best able to survive and reproduce.

Explanation:

just had it on study island

True statements

b. a replication fork occurs at each growth point of the replicating chromosome;

During DNA replication, a double-stranded DNA helix unwinds and splits into two single strands, creating a replication fork. A replication fork is the point at which two DNA strands are separated and a new strand is synthesized.

c. Eukaryotes have many different chromosomes, and each replicates simultaneously.

Eukaryotes have multiple chromosomes and replication occurs in all of them simultaneously.

d. replication occurs at a rate of approximately 500-5000 base pairs per minute.

The rate of DNA replication in eukaryotes is typically 500-5000 base pairs per minute.

e. each chromosome has multiple sites of replication.

DNA replication occurs at multiple sites on each chromosome called origins of replication. These origins are where the replication process begins and are distributed along the chromosome to allow efficient whole-genome replication.

False statements

a. Whole genome replication takes about 10 minutes.

Replication of an entire eukaryotic genome can take hours to days, depending on the size of the genome and the particular organism.

Read more about DNA replication at:

brainly.com/question/29409625

#SPJ4

Answer: OK!

Explanation: Osmoregulation is the active regulation of the osmotic pressure of an organism's body fluids, detected by osmoreceptors, to maintain the homeostasis of the organism's water content; that is, it maintains the fluid balance and the concentration of electrolytes (salts in solution which in this case is represented by body fluid) to keep the body fluids from becoming too diluted or concentrated.

Hope i helped! :D

In the given scenario, where pigweed has developed resistance to herbicides and poses challenges to cotton production in the deep south, the horizontal axis of the Production Possibilities Curve (PPC) could be labeled as "Labor-Intensive Techniques vs. Mechanization."

This labeling reflects the trade-off between employing labor-intensive techniques, such as manual weeding to control pigweed, and relying on mechanization, represented by the use of tractors and herbicides. The PPC illustrates the different combinations of labor-intensive techniques and mechanization that can be utilized in cotton production.

On one end of the spectrum, allocating more resources towards labor-intensive techniques involves manual labor for removing pigweed, which requires additional human effort and potentially higher costs. This option is depicted at one extreme of the horizontal axis.

On the other end, increasing mechanization implies a greater reliance on machinery, such as tractors and herbicides, to control pigweed efficiently. However, the resistant weed's ability to damage tractors introduces limitations and risks associated with this approach. This alternative is represented at the opposite extreme of the horizontal axis.

The PPC showcases the various trade-offs between labor-intensive techniques and mechanization, aiming to find an optimal balance that maximizes cotton production while effectively managing the challenges posed by pigweed resistance. It helps decision-makers visualize the available choices and make informed decisions regarding resource allocation and management strategies in response to the pigweed issue.

learn more about herbicides here

https://brainly.com/question/9019940

#SPJ11

ATP is a compound that is synthesized when energy stored in chemical bonds is released during cellular respiration. The correct answer is option(b).

ATP is an abbreviation for adenosine triphosphate. It's a high-energy molecule that stores the energy we require to work. ATP is a compound that is synthesized when energy stored in chemical bonds is released during cellular respiration. ATP is the primary energy source of the cell. When ATP releases energy, it becomes ADP (adenosine diphosphate) after the terminal phosphate bond breaks.

This ADP can be re-phosphorylated to ATP with the help of cellular respiration. Cellular respiration is the process by which organisms transform the energy in glucose and other food molecules into ATP energy that cells can utilize to execute their activities. Hence, option (b) Energy stored in chemical bonds is released during cellular respiration is correct.

To know more about ATP refer to:

https://brainly.com/question/893601

#SPJ11

Answer:

it i simlr because they are both i the cell

Explanation:

in the cell

Answer:

they are similar in size. duplicate their DNA and other structures and then divide into two identical organelles

Answer:

B. Ocean salinity changes with depth at a steady rate throughout the entire water column.

Explanation:

The data in the graph shows that Ocean salinity changes with the depth at a steady rate throughout the entire water column because when the water table rises it brings salts with them at the top  so there is high concentration of salts in the upper layers as compared to other layers and going deep in the soil the concentration of salts becomes very low due to upper movement of salts.

Answer:

B. Ocean salinity changes with depth at a steady rate throughout the entire water column.

Explanation:

flvs?? :)

Answer:

The correct answer is - The extra energy is converted to fat and stored until needed.

Explanation:

When someone intakes more carbohydrates than they need at a particular time body converts the excess amount of the carbohydrate into glycogen and stored in the liver cells.

One glycogen level is full the insulin starts converting the carbohydrate into fatty acids that move to different parts of the body and stoored like adipose tissue in the belly and thigh.

Thus, the correct answer is - The extra energy is converted to fat and stored until needed.

The oligosaccharide chains with the blood group ABO antigen attached stick out above the RBC surface. These chains are joined to the lipids and proteins found in the Cellular membranes. The Type ab group antigens are indirectly encoded by the ABO gene. The three primary allelic forms of the ABO locus are A, B, and O.

Red blood cells containing blood group A antigens have anti-B plasma antibodies. Plasma from people with blood group B contains anti-A antibodies and B antigens. Blood group O has both anti-A & anti-B antibody in the blood but no antigens. A person's blood type is determined by the kinds of oligosaccharides found on the surface on the red blood cells: The blood group is 0 if only 0-type allergen is present, A or B if only antigen A's and B is present, and AB if both the A and Type b seem to be present [1].

Learn more about blood

https://brainly.com/question/17890844

#SPJ4

The given statement is true as hydrogen is the most abundant element that is present in living organisms.

It is more abundant than any other element in terms of the number of atoms, but when it comes to mass, oxygen is the most abundant element.What is the reason for the statement being true-Hydrogen atoms have a lower mass than oxygen atoms, and they make up more of water's mass than oxygen atoms. Additionally, hydrogen is present as single atoms and oxygen is bonded in compounds. Thus, the statement is accurate.Hydrogen is a gas, while oxygen is a solid. It is also found in compounds like water, where it is combined with oxygen to form H2O.

Since water is the most abundant compound in living organisms, it implies that hydrogen is also the most abundant element.Hydrogen's atomic mass is lower than that of oxygen. For example, hydrogen has an atomic mass of 1, while oxygen has an atomic mass of 16. Oxygen's larger atomic mass and tendency to bond with other elements, such as hydrogen, are the reasons why it is more abundant in terms of mass.Oxygen is present in water molecules, as well as in carbon dioxide (CO2) and other organic molecules like carbohydrates and proteins. These organic molecules contain a significant amount of carbon, hydrogen, and oxygen in their structure. Therefore, although hydrogen is the most abundant element in terms of the number of atoms, oxygen is more abundant in terms of mass.

for such more questions on  organisms

https://brainly.com/question/17259533

#SPJ8

The Galapagos Island Finches that Darwin studied are an example of allopatric speciation, which occurs when populations of the same species become geographically isolated from each other, resulting in genetic divergence and ultimately the formation of new species.

The finches' isolation on different islands led to natural selection favoring certain traits that were better suited to the specific island's environment, leading to the development of distinct beak shapes and other physical differences between the populations.

Over time, these differences accumulated to the point where the finches on different islands could no longer interbreed, and thus became separate species.

To know more about allopatric speciation, refer here:

https://brainly.com/question/4493180#

#SPJ11

The microorganisms developed FIRST due to the early environmental conditions on Earth were prokaryotic and anaerobic (Option b). Moreover, eukaryotic cells evolved from simpler forms of life.  

The first microorganisms were prokaryotes that evolved in absence of oxygen.

These prokaryotic microorganisms originated approximately 4 billion years ago. During this period, the earth's early atmosphere did not contain oxygen gas.

In consequence, the first microorganisms were anaerobic bacteria (i.e., prokaryotes), which evolved in absence of oxygen.

Moreover, the first eukaryotic organisms appeared approximately 1.5 billion years ago and evolved from simpler forms of life (i.e., prokaryotic microorganisms).

Learn more in:

https://brainly.com/question/8946908?referrer=searchResults

There is exponential bacterial growth. It was calculated that there were 5. 5 X 10^4 cells present at 7:00 AM.  As a result, the bacteria's generation period is roughly 29.3 minutes.

Here: N = \(N_{0}\) x 2^(t/g)

Here:

\(N_{0}\) = initial number of cells

N = final no's of cells

t = time elapsed

g = generation time

We can use the information given to solve for g.

At 7:00 AM, \(N_{0}\) = 5.5 x 10^4 cells

At 11:00 AM, N = 8.7 x 10^7 cells

The time elapsed is 4 hours, or 240 minutes.

Substituting these values into the formula, we get:

8.7 x 10^7 = 5.5 x 10^4 x 2^(240/g)

Dividing both sides by 5.5 x 10^4, we get:

1582.7 = 2^(240/g)

Taking the logarithm of both sides (base 2), we get:

log (base 2) (1582.7) = 240/g

Solving for g, we get:

g = 240 / log2(1582.7)

Calculating g, we discover that it is roughly 29.3 minutes. As a result, the bacteria's generation period is roughly 29.3 minutes.

Learn more about bacterial culture Visit: brainly.com/question/29567229

#SPJ4

Initially, m&ms were sold at many different types of retail outlets. Traditionally, retailers included all of the following except distribution center.

A warehouse or other specialized structure that is filled with items to be redistributed to retailers, wholesalers, or directly to consumers is referred to as a distribution center for a set of products. Distribution centers are more akin to integrated logistics operations that store, pick, pack, and ship goods to satisfy client requests – either to retail establishments or directly to individual customers.

Learn more about distribution center here:

https://brainly.com/question/29222731

#SPJ4

The complete question is:

Initially, m&ms were sold at many different types of retail outlets. Traditionally, retailers included all of the following except:

a. grocery stores

b. gas stations

c. vending machines

d. distribution center

e. convenience stores

Answer:

shorter and higher

Explanation:

UV  is further along in the EM spectrum so has a higher frequency and shorter wavelengths than visible light.