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statuscvo [17]
3 years ago
7

What are the two defining properties of stem cells?

Biology
2 answers:
Crank3 years ago
6 0

Answer:

they are unspecialized and they give rise to specialized type cells

Explanation:

hope it's helpful

slega [8]3 years ago
4 0

Answer:

they are unspecialised

they are capable of dividing and renewing themselves

Explanation:

These are present as a mass of cells that differentiate later during their period of division .

the cells undergoes a period of cell proliferation.

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What are the two active sites or domains on a repressor protein?
n200080 [17]

Answer:

DNA binding domain and allosteric domain

Explanation:

Repressors are proteins that inhibit gene expression, They usually have DNA or RNA binding site which enables them to binde to the operator or associated silencers. Allosteric domain is the site for the binding of other molecules, such as  corepressors and inducers that regulate repressor's activity.

3 0
3 years ago
The output region is the site of ______________________.
tester [92]

Answer:

The correct answer is option C (voltage gated Na+ channels).

Explanation:

Output region or axon terminal is the structure of neuron which transmits the signals to other nerve cells.

The signal is transferred via action potential generated by the dendrite cell which moves along the axon and reaches the synaptic junction.  

At the synaptic junction, voltage-gated channel (Na+) channels located in the membrane of the axon terminal cell opens due to the changes in the electric membrane potential which play important role in returning the depolarized cell to a resting state.

Thus, option C (voltage-gated Na+ channels) is the correct answer.

7 0
3 years ago
State what enzymes are made of
creativ13 [48]
Enzymes are large molecules that speed up the chemical reactions inside cells. Each type of enzyme does on specific job. Enzymes are a type of protein, and like all proteins<span>, they are made from long chains of different </span>amino acids<span>.</span>
4 0
3 years ago
Read 2 more answers
A comparison of karyotypes from two carrot plants cloned from the same carrot root tissue should show that all cells of these ca
nadya68 [22]

Answer:

C. Diploid condition

Explanation:

A Karyotype is the pictorial display that shows chromosome arrangement and number in a cell. The Karyotype shows any abnormalities in the nuclear material (chromosomes). In a carrot plant that was cloned from carrot root, the clones should possess the same features as the original plant.

A Karyotype of both plants i.e. clone and the original plant should show that their cells have a diploid number of chromosomes i.e. Two sets of chromosomes. Since a carrot plant is a diploid organism.

5 0
4 years ago
which of the following best describes a difference between mitosis and meiosis? plz help quickly this is for a test​
abruzzese [7]

Answer:

The answer is A

Explanation:

Im am going to be honest the reason why i think its A is because Mitosis occurs in somatic cells.

5 0
3 years ago
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