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iVinArrow [24]
3 years ago
13

Help. plz and thank you

Biology
1 answer:
egoroff_w [7]3 years ago
6 0
I'm not sure about the other two, but I know that a volcanic mountain is filled with flood canals, but these canals don't have water in them, oh no, they have (do not touch it because it is super deadly) lava.
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This organelle, found in all cells, is responsible for allowing only certain molecules into and out of the cell What is its name
ohaa [14]

Answer:

Your answer would be the cell membrane!

Explanation:

The cell membrane allows passive transport for small molecules or ions!

Hope I was right and good luck!

Nice profile pic of Katsuki Bakugo btw :)

5 0
3 years ago
On a large volcanic island, researchers are studying a population of annual herbaceous plants. Which of the following observatio
tangare [24]

Answer:

(B) Lava has separated the population into two areas: an upland forest and a lowland marsh.

Explanation:

In allopatric speciation, individuals of an ancestral species may undergo evolution into two or more progeny species which arises when physical separation causes a geographic boundary, this barrier can be in the form of a mountain range, rockslide, river or lava.

As in this scenario, a lava flow divides the populations of annual herbaceous plants by altering the landscape. This will cause genetic divergence with varying heritable features among its many generations favouring different traits in the separate environment along with genetic drift. The Lava will separates the population into two areas: an upland forest and a lowland marsh.

4 0
3 years ago
A scientist is studying the metabolic processes carried out by a certain bacterium. Which of the following observations would in
Arlecino [84]

Answer:

<em>The correct option is D) Ethyl alcohol is produced.</em>

Explanation:

Fermentation can be described as a process by which energy is extracted by organisms such as bacteria and yeast.

Sugars are converted into alcohol by this metabolic process occurring in certain microorganisms. There are two main types of fermentation:

Fermentation which takes place in the presence of oxygen is termed as aerobic fermentation.

The process of fermentation which occurs in the absence of oxygen is termed as anaerobic respiration.

Hence, as alcohol will be produced from both types of fermentation, optic C is correct.

8 0
3 years ago
Difference between osmosis, diffusion and plasmolysis
pickupchik [31]
Osmosis is the movement of water particles from an area of high concentration of water particles to an area of low concentration of water particles across a semi permeable membrane

Diffusion is the movement of particles from an area of high concentration of particles to an area of low concentration of particles across a partially permeable membrane

Plasmolysis is the shrinking of the cytoplasm if a plant cell in response to diffusion of water out of the cell and into a high salt concentration solution as the cell membrane would pull away from the cell wall

Hope this helped
7 0
3 years ago
Blue whales have 44 chromosomes in every cell. determine how many chromosomes you would expect to find in the following:Sperm ce
baherus [9]

Sperm cell: We expect to find 22 chromosomes.

The spermatozoon is a small cell (5 micrometers in diameter), much smaller than the ovum, but with a movable tail (a flagellum) 60 micrometers long. To be lightweight and mobile, to quickly reach the egg, the sperm gains space by minimizing its cytoplasm and compacting its DNA. Head is covered with the acrosome, a pocket full of enzymes that will be used to pierce the membrane of the egg.

It is a haploid cell because it contains half of the genetic material of the individual, lost at the time of meiosis during the process of spermatogenesis that the primordial germ cells undergo in the seminiferous tubules of the testes.


Egg Cell: We expect to find 22 chromosomes.

The egg is the sexual cell (or gamete) produced by the females of the animals.

Like all gametes, the egg is haploid, it contains half of the chromosomes of the future embryo, so the number of chromosomes will be 22 instead of 44. Then this egg will meet a sperm cell to gather their chromosome and form an embryo of 44 chromosomes.


Daughter Cell from Mitosis: We expect to find 44 chromosomes.

Mitosis, which ensures the birth of cells identical to the mother cell during asexual multiplication (so the number of chromosomes will remain the same, it will not divide in two).

Mitosis is an asexual cell division. This means that it is just a division of a mother cell into two daughter cells, which will inherit exactly the same genetic inheritance.


Daughter Cell from Meiosis II: We expect to find 22 chromosomes.

Meiosis is a particular mode of division of the living cell by which an initial cell with 2n chromosomes (in this case 2n = 44 chromosomes), a diploid stage, gives rise to four daughter cells possessing only n chromosomes, a haploid stage (n = 22 chromosomes). Meiosis is one of the forms of cell reproduction, this process is performed on the gonads to produce gametes.

4 0
3 years ago
Read 2 more answers
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