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
Ira Lisetskai [31]
3 years ago
13

A single-celled organism isolated from a deep-sea, hot thermal vent was found to have a cell wall but lacked a nucleus. This org

anism is most likely a member of which of the following domains?
Biology
1 answer:
Nezavi [6.7K]3 years ago
7 0

Answer:

Archaea

Explanation:

Three main domains exist according to classification, two of these domains are characterized to contain organisms that do not have a membrane bound nucleus, in other words, their single circular genetic material (DNA) is not housed by a nucleus. Instead, the naked DNA is found localized to a central region in the cytoplasm called NUCLEOID. These domains are bacteria and archaea domains and they are termed to be PROKARYOTIC.

These domains also lack membrane bound organnelles i.e their few present organnelles are not bounded by lipid layer. Archaea and Bacteria both have cell walls but what makes up the cell wall is different in both organisms. The organism will most likely be an archaea because it portrays its characteristics being that, an archaea is a unicellular prokaryotic organism with a cell wall. It also has the ability to thrive in extremely harsh conditions like the hot thermal vent described in the question.

You might be interested in
Complete each statement by using the appropriate word or phrase from the list. Then place the statements in the order of an acti
timurjin [86]

Answer:

1. Potassium

2. increasing towards zero

3. hyperpolarization

4. voltage-regulated Potassium

Explanation:

Membrane potential can be defined as the difference in electric charges inside and outside of a cell. The resting membrane potential (RMP) occurs when there is no net current across the membrane and therefore the cell is in a non-excited state. At the RMP, sodium ions (Na+) are more concentrated inside the extracellular fluid (ECF) than inside the intracellular fluid (ICF), while potassium ions (K+)  are more concentrated inside the ICF. The diffusion of K+ outside the cell triggers its hyperpolarization, by becoming the membrane potential more negative compared to the resting potential. As the potential nears +35 mV, the voltage-regulated potassium channels are open, thereby K+ ions leave the cell down its concentration gradient, while voltage-gated Na+ channels become saturated and inactivate.

8 0
2 years ago
What is the term used to describe the energy needed to get a reaction started?
professor190 [17]
Its activation energy
6 0
3 years ago
Celery stalks that are immersed in fresh water for several hours become stiff. Similar stalks left in a 0.15 M salt solution bec
mixer [17]

Answer:

From this it can be deduced that the fresh water is hypotonic and the salt solution is hypertonic to the cells of the celery stalks.

Explanation:

When submerged in water, the celery stalks become stiff and hard, this shows that water moves within the stalk, thus, water is hypotonic in comparison to the celery stalk. Therefore, water moves from the region of higher concentration to the region of lower concentration.  

When the same celery stalk is administered into the 0.15 M solution it turns soft, which shows that water from the celery stalk moves out. Thus, the salt solution is hypertonic in comparison to the celery stalk. Therefore, freshwater is hypertonic and the solution of salt is hypertonic to the celery stalk cells.  

3 0
3 years ago
Explain the Three position of Meristematic tissues​
son4ous [18]
<h2>Answer:</h2>

There are three types of meristems on the basis of position, i.e

  1. Apical meristem.
  2. Lateral meristem.
  3. Intercalary meristem.
<h2>Explanation:</h2>

A meristem is the tissue present in  most plants containing undifferentiated cells, found in zones of the plant where growth can take place. Generally differentiated cells(the cells other than meristems) do not divide and produce of a different type of cells.

Meristems are classified on the basis of their location in the plant:

  1. Apical meristem - these are the meristems located at root and shoot tips of the plant.
  2. Lateral meristem - these are the meristems located in the vascular and cork cambia in plants.
  3. Intercalary meristems - these are the meristems located at internodes, or stem regions between the places at which leaves attach, and leaf bases.

Result: There are 3 types of meristems.

8 0
3 years ago
Differentiate between haploid and diploid cells and identify in the human life cycle when cells are haploid/diploid.
Romashka-Z-Leto [24]

Answer:

Haploid organisms develop from unfertilized eggs. Diploid cells have 46 chromosomes in humans. Haploid cells have 23 chromosomes in humans. Diploid cells are important for the growth and development of organisms.

Explanation:

Hope this helps!

If you get it right can you please

give me brainliest?

8 0
3 years ago
Other questions:
  • Select which statements are a part of natural selection. select all that apply
    12·2 answers
  • Vitamins taken in mega doses can be harmful because they_________.
    14·2 answers
  • If you measure one hundred centimeters, is the distance more or less than one kilometer?
    10·1 answer
  • A baby elephant has a mass of 100,000 g. How many kilograms does the baby elephant weigh?
    14·1 answer
  • PLEASE REPLY QUICKLY
    9·1 answer
  • VERY EASY QUESTION. WILL MARK BRAINLIEST When is the peak hurricane season for the Atlantic Ocean Basin, and why do hurricanes p
    10·1 answer
  • PLEASE PLEASE HELP I WILL MARK BRAINLIEST
    7·1 answer
  • How can you prove corona is a PLANDEMIC​
    11·2 answers
  • Please help me with this
    11·1 answer
  • What role do wolves play in the tundra ecosystem?<br> producer<br> predator<br> prey<br> decomposer
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!