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
Marat540 [252]
4 years ago
13

Which of the following can be used to compare the amount of radioactively

Biology
1 answer:
katovenus [111]4 years ago
6 0

Answer:

D. Scintillation counter  

Explanation:

DNA is usually labelled with radioactive phosphorus, which is a β emitter, so you need a device that can detect β particles.

A scintillation counter detects β particles because they emit a flash of light when they hit a phosphor. The device converts the flashes into electrical signals, amplifies then about a million times, and then counts them.

A, B, and C are wrong. They are all common laboratory equipment, but they can't detect radioactivity of any sort.

You might be interested in
A number of studies have found that for many plants there is an increase in seed production under conditions of elevated carbon
CaHeK987 [17]

B) The carbon needed to produce new plant molecules through photosynthesis requires carbon dioxide.

8 0
3 years ago
Humans have a gene, T, that is involved in muscle formation of the tongue. Individuals homozygous for one allele can roll their
baherus [9]

Answer:

Autosomal Recessive mode of inheritance

Explanation:

If both parents can roll their tongue and their child cannot, it means they are both heterozygote for the trait and since this trait skipped a generation, it can be said to be an autosomal recessive mode of inheritance and not an autosomal dominant mode of inheritance as the later does not skip generations.

7 0
4 years ago
Which student identified the correct order of events?
Natali5045456 [20]

Answer:

C. Tyrone:

  1. Information stored in DNA
  2. Transcription
  3. Translation
  4. Gene Expression

Explanation:

Central Dogma of Molecular Biology:

  • The central dogma of molecular biology is the scheme that illustrates the flow of genetic information from DNA to RNA to protein. The processes include:
  • Genetic information is stored in DNA in the form of nucleotide bases.
  • This DNA sequence is converted into RNA sequence through a process called transcription. Transcription produces an mRNA which is complementary to the DNA sequence of the gene but contains ribonucleotides.
  • mRNA is read in the form of codons which are triplet codes of nucleotide bases specific for a specific amino acid. These codons are decoded and translated into proteins through the process of translation.
  • Both processes of transcription and translation combined with post-translational modifications of proteins is termed as gene expression.
7 0
3 years ago
Unit 2.4 diversity of life
zaharov [31]
What do you mean unit 2.4 ???????????
8 0
3 years ago
If an atom has 25 protons and 23 electrons what is the net charge?
Stella [2.4K]
25 newtrons  hope it helps have a good day :)
3 0
4 years ago
Other questions:
  • ____ are produced in the light reactions and used in the Calvin cycle.
    10·1 answer
  • Which type of earthquake wave travels the fastest and can go through nearly any type of material?
    10·2 answers
  • Need help with this ??
    14·1 answer
  • The subunits of a cell function independently. True or False?
    15·2 answers
  • Which term describes the entire DNA for an organism? I NEED HELP ASAP PLEASE HELP!!!!
    9·2 answers
  • What will most likely happen if a species can no longer produce offspring?
    13·2 answers
  • ________________ is the process where one strain of bacteria is changed by another strain.
    8·1 answer
  • What enzyme found in saliva breaks chemical bond in stru
    10·1 answer
  • Which structure is not directly involved in the reproduction of at least one major group of fungi?.
    7·1 answer
  • identify the subcellular structure of the neuron that forms the basis for the transmission of nerve impulses. (2 points) describ
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!