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lidiya [134]
3 years ago
11

Facilitated diffusion differs from ordinary diffusion in that

Biology
1 answer:
Katyanochek1 [597]3 years ago
3 0
Fascilitated diffusion is when charged particles cross a membrane and needs special channels or pumps
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You examine an epithelial cell (skin cell) and notice the chromosomes are visible however it appears there are two nuclei in the
krek1111 [17]

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>

6 0
3 years ago
What are unfertilized sex cells called?
vagabundo [1.1K]
The sex cells are called Gametes! Its on Google!
4 0
3 years ago
Prokaryotes whose cell walls do not contain peptidogly can
masya89 [10]

Answer:

Archaebacteria

Explanation:

Archaebacteria is a group of single-celled organism present on the earth which are thought to be descended from the ancient bacteria.

These bacteria can survive the extreme or harsh conditions present on the Earth-like in the hot springs.

The archaebacteria cell membrane is made up of ether-linked phospholipids which are ester-linked in Eubacteria and eukaryotes.  The sugar present in the archaebacteria is very similar to peptidoglycan in composition but it is not peptidoglycan.

Thus, Archaebacteria is the correct answer.

4 0
3 years ago
Which protein synthesis process comes first?<br> O Translation<br> O Transcription
Mama L [17]

Answer:

Transcription

Explanation:

First comes Transcription, then comes Translation.

For example, DNA comes first, RNA comes second, and Protein comes third which makes proteins last. So, during the DNA process, Replication occurs. After that, DNA hops over to RNA using Transcription, and after that RNA hops over to Protein using Translation. So, we look left to right. Now, when I listed everything, Transcription came first and Translation came second. There is your answer.

6 0
3 years ago
All of the following are stops on the pathway of taste signals except __________.
Troyanec [42]

B. The prefrontal cortex is used to plan complex cognitive behavior, personality expresison, and moderate social behavior.

8 0
3 years ago
Read 2 more answers
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