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VARVARA [1.3K]
3 years ago
6

Which of the following statements is true?

Biology
2 answers:
Zepler [3.9K]3 years ago
7 0
<span>Prokaryotic organisms are always unicellular, but eukaryotic organisms are always multicellular.
the second option because pro are usually found in plants and euk in animals and humans 
</span>
Masteriza [31]3 years ago
3 0
The answer is "Prokaryotic organism are always unicellular, but eukaryotic organisms can be either unicellular or multicellular"
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Which of the following applies to hyaluronidase?
Helga [31]

Answer:

It acts as a spreading factor.

Explanation:

Hyaluronidase is an enzyme that are used for the degradation of  hyaluronic acid. This enzyme increases the tissue permeability in the organism. The discoverer of Hyaluronidase was Karl Meyer.

Hyaluronidase acts as a spreading factor that allows the spread of toxins as it breaks the hyaluronic acid in snake of insect venom. This enzyme is present in the venom of snakes, honeybee and lizard.

Thus, the correct answer is option (1).

6 0
3 years ago
A scientist thinks that a certain chemical is a mutagen. She exposes plant cells to a large amount of this chemical in the labor
bekas [8.4K]

Answer:

The cells change after being exposed to the chemical, and this change is passed to the next generation of cells.

Explanation:

A mutation is any change, whether big or small, that occurs to the nucleotide sequence of a gene in a cell as caused by mistake during replication or induced by a mutation causing substance. These mutation-causing substances are called MUTAGEN.

A MUTAGEN is any substance that causes genetic mutation in an organism's cell. These changes in the nucleotide sequence can affect one or more phenotypic characteristics of the affected organism, which is also passed to offsprings because it is a genetic change.

Hence, a plant cell exposed to this mutagen will be induced to mutate.

Hence, the cells changing after being exposed to the chemical, which is also passed to the next generation of cells best provides explanation that the chemical is a MUTAGEN.

4 0
3 years ago
In what year was on the origin of species published?
likoan [24]
On the Origin of Species was published in 1859.
3 0
2 years ago
Read 2 more answers
The loose skin of the ___________ allows for expansion during erection. corona penile glans penile shaft foreskin
DENIUS [597]
<span>Penile shaft

</span>During erection, blood<span> flows into the spaces, causing distention and elevation of the penis. The amount of blood entering the penis can be increased by physical or psychological stimulation. As blood enters, there is a temporary reduction in the rate and volume of blood leaving the penis. The arteries carrying blood to the penis dilate; this, in turn, causes tissue expansion. The veins leading from the penis have funnel-shaped valves that reduce the outflow of blood. As the erectile tissue begins to enlarge, the additional pressure causes the veins to be squeezed against the surrounding fibrous tissue, and this further diminishes the outflow of blood. Essentially, blood becomes temporarily trapped in the organ.</span>
8 0
3 years ago
Read 2 more answers
3. (a) The binomial naming system used to identify all living things gives the Indian elephant
Mrac [35]

Answer:

Genus = Elephas

Species = maximus

Explanation:

Carolus Linnaeus, who is considered to be the FATHER OF TAXONOMY for his immense contribution to the classification of living organisms. Carolus Linnaeus between the year 1735 and 1758, developed a scientific system of naming organisms using two-way naming system called BINOMIAL NOMENCLATURE.

The two Latin names given to organisms were derived from their generic and specific epithet i.e. one of the names is GENUS and the other SPECIES. According to this question, the scientific name using the binomial naming system for Indian elephant is Elephas maximus. This means that Elephas is the part that refers to GENUS while maximus is the part that refers to SPECIES.

4 0
3 years ago
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