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3 years ago

Why would cells lining a tube-like structure such as the trachea need to be ciliated?

1 answer:

6 0

The cartilaginous structures that ring most mammalian tracheae are ... The trachea islined with a moist mucous-membrane layer composed of cells containing small hairlike projections called cilia. ... Such outgrowths could have been useful to insects exposed by the drying up of a temporary aquatic.

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2. Being humans we have bilateral symmetry. What kind of symmetry do most cnidarians have and what

LiRa [457]

Answer:

See explanation:

Explanation:

Humans are the same, one side to the other. The human body is a mirror image, one side to the other. The cnidarian phylum does not necessarily have bilateral symmetry. Body forms like jelly fish, sea anemones, and coral are examples of cnidarians. Note that jelly fish may be somewhat symmetric, but not totally and not in the same way that the human body is.

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3 years ago

_______________ can be accidental or intentional, and it can cause erosion.

maksim [4K]

Fire can be accidental or intentional, and it can cause erosion.

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3 years ago

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How does the folded nature of the cristae within mitochondria affect their function?

adoni [48]

Answer:

Explanation:

With a higher surface area the cell is able to produce more ATP

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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

3 years ago

After fertilization, the ovule develops into a seed. can you match the parts of the ovule with the corresponding parts of the se

Goshia [24]

After fertilization of the ovule, the megaspore develops into the food supply of the mature seed.
After fertilization of the ovule, the integument develops into the seed coat.
After fertilization of the ovule, the fertilized egg develops into the embryo of the mature seed.

The ovule contains the female reproductive cells of the seed plants and when fertilized, it produces the seed. Ovules contain megasporocytes, cells that produce megaspores through cell division. An integument is a layer that protects and surrounds the ovule. After fertilization, the integument protects and surrounds the seed. After fertilization, the ovule contains a diploid zygote which develops into an embryo.

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3 years ago