1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ki77a [65]
3 years ago
12

A scientist wants to perform a test that will indicate whether a nucleic acid sample is composed of RNA or DNA. Testing for the

presence of which of the following is most appropriate in this situation?
Biology
1 answer:
ehidna [41]3 years ago
5 0

The options are :

A) phosphate

B) nitrogen

C) guanine

D) uracil

E) thymine

Answer:

The correct answer is E) thymine

Explanation:

DNA and RNA are both made up of nucleotide. There are two major difference between DNA and RNA. In DNA deoxyribose sugar is present and in RNA ribose sugar is present.

The other difference is in DNA thymine nucleotide is present which makes complementary base pairing with adenine but in RNA thymine is replaced by uracil.

Therefore testing for the presence of thymine is most appropriate in this situation to find out whether a nucleic acid sample is composed of RNA or DNA.

You might be interested in
If a homozygous black bull is mated with a homozygous white cow and the calf is gray, this could be an example of ___________. H
givi [52]

Answer:

Incomplete dominance

Co-dominance

Explanation:

Gregor Mendel discovered the principles that governs heredity, in which one of them is that an allele called DOMINANT allele, is capable of masking the expression of its variant allele called RECESSIVE allele in a heterozygous state. However, there has been genetic scenarios contrary to this his LAW OF DOMINANCE.

One of those Non-mendelian pattern of inheritance is a phenomenon called INCOMPLETE DOMINANCE, where an allele does not mask the expression of another completely, instead their combined state produces a third intermediate phenotype that is different from both parents. This is the case of the homozygous black bull mated with a homozygous white cow to produce a grey calf. The grey phenotype is an intermediate phenotype of both the black and white colours that forms due to incomplete dominance.

Another genetic scenario is called CO-DOMINANCE, where one allele is neither dominant nor recessive to the other allele, but instead both phenotypes becomes simultaneously expressed in the heterozygous offspring. In this case, the black bull and white cow were mated to form a heterozygous calf with both black and white spots.

3 0
3 years ago
Which phrase best describes the benthic zone of a lake?
Vaselesa [24]

Answer:

Cold, dense water

Explanation:

3 0
3 years ago
Which of the following cycles involves chemically storing energy and releasing energy through the use of mitochondria?
slavikrds [6]

Answer:

Krebs Cycle

Explanation:

5 0
3 years ago
The instructions for assembling proteins are contained in the
timofeeve [1]

Answer:

Genes

Explanation:

5 0
3 years ago
Read 2 more answers
Using both maps, what can you tell about the regions in Washington that get the most or the least amount of rain?
lidiya [134]

Answer:

In the Precipitation Map of Washington, the dark orange section indicates low rainfall in the region. Using the Shaded Relief Map of Washington, you can tell that this area is flat, possibly a plain. These regions typically don't receive a lot of rain. The Precipitation Map of Washington has areas that are dark purple and dark green. This indicates that they both receive a lot of rainfall every year. If you look at these areas on the Shaded Relief Map of Washington, you can tell that these areas with a lot of rainfall are mountainous.  

On the Precipitation Map of Washington, purple/blue means more rain, and orange/red means less rain. The Shaded Relief Map of Washington shows mountains (brown), valleys, plateaus, and canyons. Areas that are flat are smooth on the map. Areas with steep slopes and mountains look rougher.

Explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • Explain why the elbow joint of a cow and the elbow joint of a human have similar, but not identical structure. Think about the a
    12·2 answers
  • Drag the following examples to the correct type of species interactions that they exhibit.
    8·1 answer
  • ________ is composed of multiple globular molecules polymerized to form long chains or filaments.
    10·1 answer
  • Which scientific force is primarily responsible for maintaining control of your vehicle?
    14·1 answer
  • Cytochrome c is an enzyme located in the mitochondria of eukaryotic cells. The number of differences in the amino acid sequences
    13·1 answer
  • Please select the word from the list that best fits the definition has constantly changing amount of salt in the water
    12·2 answers
  • If Earth’s average surface temperature continues to change over the next 30 years at the same rate it changed between 1980 and 2
    15·2 answers
  • The main organic source of energy for living things is
    6·2 answers
  • What does cell fractionation allow a scientist to study?
    13·2 answers
  • Anatomy: I need help!! If you know the answer pls let me know!! It would be greatly appreciated
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!