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jeyben [28]
3 years ago
12

What technological advancement was necessary before scientists could begin to observe cells?

Biology
2 answers:
VLD [36.1K]3 years ago
5 0
Yeah thats correctomundo
Lady bird [3.3K]3 years ago
4 0
The microscope. Scientists were able to observe tiny parts of cells since they are not visible to the naked eye.
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Skin cells form new cells in<br> Mitosis only<br> O Meiosis only<br> Both<br> Neither
Fiesta28 [93]

Answer:

Mitosis only

Explanation:

Mitosis and meiosis are both types of cell division. Mitosis allows cells to proliferate for growth and repair. So this is how skin cells form new cells.

Meiosis is a type of cell division specific to reproduction. It forms the gametes, which are the egg and sperm. It generates haploid cells that fuse via fertilization to create a zygote.

7 0
3 years ago
Relate the development of plant needles to the occurrence of mutations.
xxMikexx [17]
<h2>Development of Plant Needles</h2>

Explanation:

  • Seed of pitch pine treated with colchicine delivered tetraploid seedlings which had thick and sporadic needles and less fortunate tallness and diameter growth than ordinary seedlings.  
  • In test of colchicine-initiated polyploidy in pines, researcher found that a significant number of the polyploid plants returned to a diploid development in light of the fact that the polyploid cells partitioned at a more slow rate and were overwhelmed by the more quickly developing diploid cells which encompassed them.  
  • The primary needles of both diploid and polyploid plants were more effective at low light intensity than secondary needles, and they had lower compensation points.

5 0
3 years ago
Read 2 more answers
Use the following study to answer the following question: A researcher applies varying amounts of fertilizer (0, 2, 4, 8, 10 uni
Ksenya-84 [330]
I believe the answer is the weight of each tomato.

This is because the weight of each tomato depends on the amount of fertilizer (the independent variable/the thing being changed) added to each plant. 
8 0
3 years ago
During what process in the cell cycle does one cell become two cells? anaphase telophase prophase cytokinesis
Sonja [21]

Answer:

cytokinesis

Explanation:

4 0
3 years ago
Read 2 more answers
A botanist scrapes pollen off a flower of one plant and then uses it to pollinate the flower of another plant. What can be scien
Ray Of Light [21]

Answer:

<em>They will have a large number of genetic variations.</em>

Explanation:

Genetic variations arise due to sexual reproduction or due to the process of meiosis.  

Cross-pollination can be described as a process in which the pollen of one flower is transferred to another flower. The pollen when fertilizes the egg in the stigma, will produce offspring with varied genetic characteristics. This will be because the pollen would carry the trait of another flower and the egg of another flower. This will lead to many genetic variations.

6 0
3 years ago
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