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dusya [7]
3 years ago
5

NEED HELP HEREE :)

Biology
1 answer:
Lubov Fominskaja [6]3 years ago
4 0
1.The correct answer is D
Since the time of Linnaeus, the classification of organisms into kingdom has significantly changed. Fungi have been classified as a separate kingdom (they have been classified under plants before) and the development of microscopy has enabled scientist to study microscopic organisms and classify them into the Protista and Monera kingdoms.
 
2.The correct answer is D
The phylum is one of the highest ranks of classification, right under the rank of kingdom, so it contains a great number of species. For example, the phylum of Arthropoda contains all the insect, spider, crustacean and millipede species.

3.The correct answer is B
Before the methods of genetics and molecular biology research were developed, species were classified only based on their physical appearance. But now, we can determine how closely related species are by their genes as well. This solves the problem of species that have developed convergent traits as a response to similar environments, but that, in fact, are not genetically similar.

4.The correct answer is C
The classification of viruses has always been a difficult question for scientists. Viruses have their own genetic material enclosed in a protein coat, but they can not reproduce on their own since they need the metabolism and the genetic machinery of other cells to survive.

5.The correct answer is D
The two species are definitely members of the Eukarya domain because they have nuclei. All of the other domains, Bacteria, and Archaea lack all organelles including the nuclei. If both of the species produce eggs, they may be members of the animal kingdom.
6. The correct answer is A
Even though both bacteria and archaea are single-celled prokaryotes the differences between them are great. Their cell walls and cell membranes are built from different lipids and the enzymes that have a role in the central dogma differ significantly.


7.the correct answer is B
Sexual reproduction in eukaryotes has a purpose of exchanging the genetic material between two individuals. The process of conjugation in bacteria is very similar to sexual reproduction, but there are no specialized sex cells and the cells do not form haploid cells through meiosis.

8. The correct answer is D
Natural selection has filtered the population of bacteria. Only the individuals resistant to the antibiotic have managed to survive and leave offspring, producing a population of bacteria that is solely consisted of antibiotic-resistant individuals.

9. The correct answer is D
Red algae are autotrophic organisms. This means that they are producers of food, in this case, they can produce sugars trough conversion of sunlight in the chloroplasts. The amoeba must consume other organisms or organic particles to survive, and the only way for it to do it is through the process of endocytosis since they lack mouths.

10. The correct answer is B
Molds are fungi that are dependant on moisture. They are not photosynthetic and they lack flagella, so the most efficient way to eradicate molds would be to dry out the area and the lack of moisture will cause the disappearance of the mold.
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Please answer both questions with the correct answer :)
Nesterboy [21]
1) Speed = distance / time
s = 60 / 2
s = 30 km/h

In short, Your Answer would be Option B

2) Speed = distance / time
s = 25/4
s = 6.25 km/h

In short, Your Answer would be Option B
[ Direction not needed as it is speed not velocity ]

Hope this helps!
8 0
3 years ago
What is the smallest unit of matter that has characteristic properties of its elements
sveta [45]

Answer:

That would be an "atom".

Hope this helps. :-)

5 0
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stiv31 [10]

The three cellular components, which takes part in the process of metabolism and are affected by the modifications in temperature are ribosomes, cell membrane, and enzymes.

All these are formed of a certain type of protein, which can become denatured when exposed to high enough heat or stop gets functioning at too low temperature. The high temperature can disrupt the non-polar hydrophobic interactions and hydrogen bonds. This takes place as heat enhances the kinetic energy and makes the molecules to throb so briskly and viciously that the bonds get disordered.

4 0
3 years ago
HELP PLEASE!!!!!!!!! What is the difference and similarities between convection, conduction and radiation?
Lelechka [254]

Answer:

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7 0
3 years ago
Most farms were once tilled by animals pulling plows. Today, mechanized plows can quickly till large areas of land. How have mec
GarryVolchara [31]

Answer:

The correct answer is <em><u>"Mechanized plows allow larger areas to be farmed by a single farmer."</u></em>

Explanation:

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3 0
3 years ago
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