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3 years ago

PLS PLS HELP ITS BIOLOGYYYYY

Biology

2 answers:

Korvikt [17]3 years ago

7 0

B. Living things must be made of cells.

Viruses are not alive and thrive on their host’s therefore they are NOT made up of cells.

aksik [14]3 years ago

7 0

B, because they aren’t made of cells and living things must be made up of cells.

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What are at least 3 properties of minerals

Allushta [10]

Cleavage.
Color.
Fluorescent Minerals.
Hardness.
Luster.
Miscellaneous Properties.
Specific Gravity.
Streak.

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3 years ago

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What factor is described as movement into or out of a population? A. non-random mating B. migration C. small populations D. natu

melomori [17]

The movement into or out of a population is known as migration.

<h3>What is migration?</h3>

Often, individuals in a population have new individuals that join the population or leave the population. In fact some species have seasons of the year in which they move from one location to another.

The movement into or out of a population as described above is otherwise known as migration.

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2 years ago

_____________________, commonly known as sea squirts, have a larval stage that resembles a chordate.

svetlana [45]

Urochordates, commonly known as sea squirts have a larval stage that resembles a chordate.

What are Urochordates? Give the characteristics of it.

Ascidians (sea squirts) are a common term for the Urochordata, also known as the Tunicata. The body of an adult tunicate is fairly simple. While possessing all the characteristics of a chordate, including a notochord, a dorsal nerve cord, pharyngeal slits, and the larva of many tunicates swims freely and lacks only these characteristics. Ascidia, Salpa, and Doliolum, for instance.

Characteristics features of Urochordata:

1. The grownups are anchored to the foundation.

2. It is also known as "Tunicate" because an adult's body is covered by a tunic formed of tunicin, a cellulose-like substance.

3. The notochord only appears in the larval stage and vanishes in the adult.

4. In adults, a dorsal ganglion takes the role of the nerve cord that is present in the larva.

5. The larva can migrate and changes into a different animal.

Learn more about Urochordata here:

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2 years ago

What is A stem cell is

polet [3.4K]

<em>by definition- a stem cell is an undifferentiated cell of a multi-cellular organism which is capable of giving rise to indefinitely more cells of the same type, and from which certain other kinds of cell arise by differentiation.</em>

an example

Stem cells have the potential to be whatever they want to be. Stem cells are able to develop into many different types of cells and can repair your body.

there are two types

adult stem cells and embryonic stem cells

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4 years ago

Unlike identical twins, fraternal twins

BigorU [14]

- developed from two separate eggs. Identical twins come from one zygote that splits into two embryos, while fraternal twins come from two separate eggs that are fertilized.

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3 years ago