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
vazorg [7]
2 years ago
6

You examine an epithelial cell (skin cell) and notice the chromosomes are visible however it appears there are two nuclei in the

cell. What is the best explanation for this observation?
a) the cell has just gone through the S –phase of the cell cycle so there is double the amount of DNA
b) the cell has just gone through telophase but not cytokinesis
c) the cell has gone through meiosis I and is preparing for meiosis II
d) the cell is in G1 and is preparing for DNA synthesis
Biology
1 answer:
krek1111 [17]2 years ago
6 0

Answer:

The best explanation if we observe an epithelial cell with chromosomes are visible and two cell nuclei is that the cell has just gone through telophase but not cytokinesis (option b).

Explanation:

A somatic cell, when found in mitosis, exhibits the chromosomes distributed in both poles and the outline of two nuclei in the telophase phase, just before cytokinesis.

In mitotic telophase:

  • Chromatids, which are chromosomes, are found in the cell poles.
  • It initiates the formation of the nucleus membrane.
  • The chromosomes begin to turn into chromatin.
  • Disappearance of the mitotic spindle, duplication of organelles and cytoplasmic invagination.

The division and differentiation of the nuclei in telophase is called karyokinesis. Later, cytokinesis occurs, where the daughter cells are separated.

The other options are not correct because:

<em>     a and d. In the other phases described, </em><em><u>S and G1,</u></em><em> no chromosome distribution is observed at the poles.</em>

<em>     c. A somatic cell does not experience </em><em><u>meiosis</u></em><em>.</em>

You might be interested in
You have a dna sequence that codes for a protein and is 105 nucleotides long
kakasveta [241]
If you have a DNA sequence that codes for a protein and is 105 nucleotides long, and a frameshift mutation occurs at the 85th base there will be 84/3 <span> amino acids that will be correct in this </span><span>protein </span>because it occurs on the 85th, and there's three per codon. Hope this answers the question. Have a nice day.
4 0
3 years ago
Name two factors other than temperature which affect the rate of an enzyme controlled reaction​
insens350 [35]

Answer:

enzyme activity be affected by a variety of factors such as temperature,pH, concentration

5 0
1 year ago
When insects are accidentally transported from one country to a new habitat in another country, the
Doss [256]
Their will be fewer competitors in the new habitat
3 0
3 years ago
How do archaea and bacteria differ?​
Lunna [17]

Answer:

The archaea and the bacteria both are prokaryotes. However, the genetic makeup of the archaea is more similar to the eukaryotes. Moreover, they have differences, in their metabolic pathways, genes and the enzymes possessed by them.

Explanation:

The differences between Archaea and bacteria:

1. The cell wall of the bacteria consist of peptidoglycan, while the cell wall of the archaea consist of pseudo-peptidoglycan.

2. The bacteria are capable of spore formation, which can lie dormant for long periods of time until a suitable condition is found for their growth. The archaea are not known to form such spores.

3. The genes of the archaea are more similar to the eukaryotes than the bacteria.

4. The bacteria are found everywhere where the living conditions are suitable (soil, air, living beings, non-living things). the archaea are capable of surviving in extreme conditions (hot springs, salt brine).

5. The bacteria use the process of glycolysis and follows Kreb's cycle for glucose break-down. The archaea do not undergo glycolysis or Kreb's cycle.

4 0
3 years ago
What is the advantage of placing telescopes in space?
jok3333 [9.3K]

Answer:

B. Space telescopes are above the distortion of Earth's atmosphere, cloud and light pollution.

Explanation:

Telescopes are powerful optical instrument which have the ability of viewing distant objects such as stars and galaxies in space and hence affords us the ability to make findings and research without having to get so close. Adoption of space telescopes is preferred to those place on earth usually due to the effect of absorption and reflection which has would have impacted some electromagnetic spectrum before reaching the earth. Also, the distortion introduced into measurement taken due to the the Earth's atmospheric conditions such as clouds may blurr measurement obtainednis also a vital reason for the adoption of space telescope.

4 0
2 years ago
Other questions:
  • A soil sample is 25 percent sand, 55 percent clay, and 20 percent silt. Use the following soil texture triangle to determine the
    6·2 answers
  • __________ is a chronic disease in which cholesterol and other fats are deposited on the inner walls of the coronary arteries, r
    9·1 answer
  • Convection currents produce the heat in the Earth’s interior.<br><br> True or False?
    13·2 answers
  • Determine whether each statement below describes traditional or modern classification.
    6·2 answers
  • Analysis of the second swab has confirmed that the causative organism is Streptococcus pyogenes, a gram-positive organism. Imagi
    5·2 answers
  • A person infected with the human immunodeficiency virus (HIV) may not have any symptoms for an
    12·1 answer
  • How does evolution work to create the diversity of life on Earth?
    5·1 answer
  • How are sexual reproduction and asexual reproduction different
    8·2 answers
  • How does interphase prepare cells for mitosis?
    7·2 answers
  • the risks the yousafzai family faced for speaking out against thr taliban. did the violence toward malala discourage her efforts
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!