BIOLOGY COLLEGE

Which of the following is true about the speed of light?O it is a constant when the light is traveling in a vacuum.
O It speeds up or slows down depending on the observer.
O It is slowest in a vacuum.
O lt varies depending on the color of the light.

Answers

Answer 1
Answer:

Answer:

It is a constant when the light is traveling in a vacuum.

Explanation:

Related Questions

Pls i’m getting timed :(
Keiko’s teacher was discussing the theory of endosymbiosis. She asked Keiko to mark the organelles in the diagram that most closely resembled prokaryotes. Which organelles should Keiko mark?
Bamboo is a type of grass. In the wild, pandas eat bamboo almost excdusively. For this reason, the availability of bamboo is a significant limiting factor on the panda population. Which statement describes how pandas could become extinct in the wild?O A The bamboo population decreases so low that other limiting factors begin to affect the panda population. OB. The bamboo population decreases so low that the carrying capacity for pandas becomes zero. O C. The populations of bamboo and pandas follow a cyclical pattern of increasing and decreasing, until one of them becomes extinct O D. The populations of bamboo and pandas both follw a pattern of exponential growth, and then both become extinct​
Which of the following statements about tRNA is FALSE? A. tRNAs of both eukaryotes and prokaryotes share common features. B. The two-dimensional structure of tRNAs exhibits a cloverleaf pattern. C. tRNAs are produced in the nucleus. D. functional tRNAs have been spliced by splicesomes. E. tRNAs possess an anticodon complementary to the codon.
In an experiment investigating the mechanism of protein secretion, researcherstracked the movement of radioactively labeled polypeptides in pancreatic cells. Atvarious times after the labeling, samples of the cells were observed using an electronmicroscope to determine the location of the radioactively labeled polypeptides.Figure 1 summarizes the results at 5 minutes, 15 minutes, and 30 minutes. The darkdots in the figure represent the radioactively labeled polypeptides.NucleusGolgiSecretoryVesiclesTime5 minER15 min30 minFigure 1. Radioactively labeled polypeptidesUsing the experimental results, describe the pathway that secretory proteins takefrom their synthesis to their release from the cell. (3 Points)

Which characteristics of DNA polymerase I raised doubts that its in vivo function is the synthesis of DNA leading to complete replication?

Answers

The question is incomplete. The complete question is as follows:

Which characteristics of DNA polymerase I raised doubts that its in vivo function is the synthesis of DNA leading to complete replication?

its composition of a single polypeptide chain.

deficiency of enzyme in some organisms that are still capable of DNA synthesis.

requirement of Mg2+ presence in order for the enzyme to work.

low stability under normal physiological conditions.

Answer:

Deficiency of enzyme in some organisms that are still capable of DNA synthesis

Explanation:

The DNA polymerase I may be defined as the important enzyme that play an important role in the DNA replication of prokaryotes. DNA pol I is the replicating enzyme, DNA repair enzyme and can also acts as the exonuclease.

DNA pol I has been studied invitro and Arthur Korenberg explain the discovery of the DNA pol I. This DNA pol I plays an important role in DNA repair rather than the replication process. This explained invivo by the fact that some in some organisms the deficiency of this enzyme do not halt the process of replication. If the DNA pol I acts as the main replaicating enzyme, the DNA synthesis must be stopped in the organisms that lack DNA synthesis.

Thus, the correct answer is option (2).

Keeping in mind the life cycle of bacteriophages, consider the following problem: During the reproductive cycle of a temperate bacteriophage, the viral DNA inserts into the bacterial chromosome where the resultant prophage behaves much like a Trojan horse. It can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. Several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. Insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. As stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?

Answers

Romans and the Trojan war

Which valve allows for the blood to be pumped into the aorta?

Answers

Answer:

Aortic Valve

Explanation:

I just know it

You transform an E. coli bacterium with the pGLO plasmid. After growing the +pGLO bacteria on an LB+Ampicillin+Arabinose plate, you see distinct colonies form after 16 hours. You check these colonies under the UV light and see that they are glowing a bright fluorescent green color. If you use a sterile loop and inoculate a new plate with LB+Ampicillin+Arabinose (coated on them, as usual) with these transformed E. coli will you see any growth? If there is growth, will it glow?

Answers

Options for the question have not been provided. The complete question has been attached.

Answer:

A. Yes, we will see growth. Yes, they will glow.

Explanation:

pGLO plasmid was engineered to be used as a vector in the field of biotechnology. It has an ampicillin resistance gene which acts as a reporter gene. It also has another reporter gene, GFP which shares its promoter (araC) with the gene responsible for metabolizing arabinose. GFP gene is thus translated only in the presence of arabinose in the medium since the promoter is active only in the presence of arabinose. Once the GFP gene is translated, the colonies glow with green fluorescence under UV light.

Here, the E.Coli colonies were grown successfully on LB + Ampicillin + Arabinose plate so they were ampicillin resistant. They also glowed in UV light. If these transformed colonies are inoculated in another LB + Ampicillin + Arabinose plate they will be able to grow successfully since they are ampicillin resistant. They will also glow because the new plate also has arabinose so the araC promoter will be active and expression of both GFP gene and arabinose metabolizing gene will occur.

DNA and RNA are both composed of nucleotides. However, RNA has three key differences. Please select thethree items that are unique to RNA.

1.Double stranded
2.Single stranded
3.Contains the nitrogen base Uracil in place of Thymine
4.Backbone contains the sugar ribose
5.Backbone contains the sugar deoxyribose
6.Contains the nitrogen base Thymine in place of Uracil

Answers

Answer:

Three items that are unique to RNA are as follows:

2. Single-stranded.

3. Contains the nitrogen base Uracil in place of Thymine.

4. Backbone contains the sugar ribose.

Explanation:

What is the relationship between an individual named pinus palustris and an individual named pinus elliottii?

Answers

In scientific names, the genus is named first, then the species. For example, humans are Homo sapiens, where we belong in genus "homo" and our species is called "sapiens." Hope that hint is helpful. :)
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