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notka56 [123]
3 years ago
10

Which of the following characteristics of living things explains why plants bend and grow towards a light source?

Biology
1 answer:
Dafna11 [192]3 years ago
5 0
I believe the answer is B. they respond to stimulli
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Which is not a common nonmetallic mineral
Alexeev081 [22]

Answer:pyrite

Explanation:

5 0
3 years ago
In which phase do sister chromatids line up in the middle of the cell, (in 'single-file', without a homologous partner)? Group o
ipn [44]

Answer:

The correct answer is ''METAPHASE I.''      

Explanation:

Metaphase I is the stage in which chromosomal studies are generally performed, because its morphology is very clear. The chromosomes, moved by the mitotic spindle, are placed in the center, between the two asters and form the so-called metaphase plate, in which the chromosomes are positioned in such a way that the kinetochore of each sister chromatid are oriented towards the opposite poles. Keeping chromosomes on the cell equator implies a balance between the forces of the microtubules that tend to move the kinetochores toward opposite poles, so positioning them in the center involves a great deal of energy.In each kinetochore, between 20-30 microtubules can be anchored, which exert traction force towards the pole from which they come, so the metaphase plate is maintained by the balance between the opposite forces of the poles on the chromosomes, which hold their sister chromatids by centromeric cohesin.

3 0
2 years ago
Pls help bio
kogti [31]
<h2>Cell Cycle </h2>

Explanation:

Eukaryotes grow and divide by cell cycle.

The main parts of a cell cycle are an ordered series of events – Gap 1 or G1 phase, Synthesis or S phase, Gap 2 or G2 phase, and the mitosis or M phases.  

Interphase period (G1, S, G2 phases) - cell grows by size, duplicates its content, replicates its DNA, and finally prepares for mitotic cell division .

Mitosis and cytokinesis - formation of two identical daughter cells

Cell cycle is regulated by regulatory or restrictive checkpoints in the cell cycle which are activated with detection of a defective DNA.

Proliferation of undesired or cells with defective DNA like in case of tumor cells is controlled by the action of suppressing agents like p53 and cyclins.

The tumor suppressor gene protein p53 prohibits division of tumor cells. Cyclins regulate cell cycle by activation of the enzyme cyclin-dependent kinase.

3 0
3 years ago
How are fossil fuels formed?
maria [59]

Answer:

They are made of decayed organisms

Then it's c

Explanation:

C

4 0
3 years ago
For DNA what is the complementary code for C? *<br> T<br> C<br> Y<br> A<br> X<br> G
grin007 [14]

Answer:

G

Explanation:

G goes with C because t goes with a y with x

7 0
2 years ago
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