how do cells move potassium ions against a concentration gradient, from a lower concentration to a higher one

How is a carbon atom different from hydrogen atom?

Serggg [28]

The atomic number of hydrogen is 1 (count the protons). The atomic mass number of hydrogen is also one (there are no neutrons!). For carbon, the atomic number is 6, and the atomic mass number is 12 (6 protons plus 6 neutrons). Adding the two neutrons changes our atom.

7 0

3 years ago

Which of the following describes a phenomenon that occurs when we observe plants that wilt?

ololo11 [35]

The xylem releases all its water when we observe plants that wilt.

Answer: Option C

Explanation:

Wilting is a process where the plant loses its rigidity and droops down. To understand it better the water is absorbed through the roots and aids in the functioning of the plant. The excessive water is stored inside the vacuole when during water scarcity releases water.

But during the drought conditions the water is lost completely causing the leaves to shrink. The xylem starts releasing all its water leaving a less surface area. Hence the leaf shrinks and wilting occurs.

5 0

3 years ago

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Somatic cells in humans contain 46 chromosomes and an example is liver cell or sperm cell

shusha [124]

Answer:

the correct example is liver cell.

Explanation:

A somatic cell can be any kind of cell except the sexual ones (sperm and eggs)

5 0

3 years ago

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Can somebody give me the answer for these...

labwork [276]

Answer:

1. Life cycle of a cell starts from

G1 phase - S phase (synthesise phase) - G2 phase - mitosis.

2. By mitosis bcoz it restore nucleo cytoplasmic ratio means ploidy of cell remain same.

3. Bcoz of transformation of normal cells into cancerous cells by Carcinogens present in tobacco.,drugs .etc

4 mitosis occurs in plants animals

Binary fission occurs in bacteria and other single celled organism.

.

Both give rise to two daughter cells.

5.sex cells (n) are produced by meiosis from gamete mother cells(2n).

6.in meiosis ploidy of cell become half

Means diploid cell form haploid cells

And 4 haploid daughters cells are formed.

In mitosis, ploidy of cell remain same

Means haploid form haploid and diploid form diploid.

1 cell form 2 daughter cells.

Hope this helps you.. Frnd ❤️

4 0

4 years ago

Why did the development of vascular systems help plants move to land

Ghella [55]

Answer:

During evolution, plants have acquired a vascular system, which has greatly contributed to the success of land plants. The vascular system allows plants to rapidly transport water and nutrients over long distances between roots, growing deeply in soil, and shoots, growing upward toward the sun.

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4 years ago

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