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lorasvet [3.4K]
3 years ago
7

Help pls should be easy?​

Biology
2 answers:
gtnhenbr [62]3 years ago
4 0
What you have selected should be right
Bond [772]3 years ago
4 0
The 1st one is correct
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Operons allow prokaryotes to...?
labwork [276]
<span>a. replicate DNA at the appropriate time.

Prokaryotes are one celled organism that only reproduce by binary fission. A copy of a copy, of course the DNA is copied as well. DNA is duplicated a succinct period of time when necessary since the energy needed to perform this process is necessarily abundant. </span>
3 0
3 years ago
Which describes an image that a plane mirror can make? The image is always real. The image can be either virtual or real. The im
Semenov [28]

Answer: The image formed by a plane mirror can only be the same size as that of the object.

Explanation :

A plane mirror consists of a highly reflecting surface. This surface reflects a large portion of light. One of the surfaces is polished with red lead oxide.

The image formed by the plane mirror is of the same size as that of the object. The distance between the object and the mirror is equal to the distance between the image and the mirror.

Out of given options, the correct one is (d) " The image can only be the same size as the object ".

8 0
2 years ago
Read 2 more answers
How many genes to monohybrids compare?<br><br> 2<br> 3<br> 1<br> 4
son4ous [18]

Answer: it 2

Explanation:

7 0
2 years ago
Explain how goal of today’s classification system differs from earlier systems
gladu [14]

Classification systems previously were having very different goals than modern classification systems. If we look at old eras, scientists like Aristotle  and Theophrastus  tried to classify organisms on the basis of apparent characteristics, habitat and simple other traits.

Old classification systems had alot of errors and flaws. For example they classified fish and whale in one group because they lived in water, now we know fish is amphibian while whale is mammal.

So we can say that the goal o earlier classification system were just to make groups of organisms on the basis of External features.

Goal of modern classification system:

Modern classification approach was started by Linnaeus. It focuses more on biological delimitation and evolutionary histories than mere external characteristics. It organizes organisms in groups in such a way that grouping reflects their evolutionary relatedness. It is not just specie level but also focuses on sub-specie and population level classification.


Thus modern goal is better in many terms and is more reliable than old classification goals.


Hope it helps!

3 0
3 years ago
The Precambrian eon is separated from the Phanerozoic eon in the fossil record because of
Usimov [2.4K]

The Precambrian eon is separated from the Phanerozoic eon in the fossil record because of the sudden appearance of organisms.

Explanation:

Precambrian eon is the initial existence on earth that can be predicted by the study of rocks and remaining of fossils. It has been seen as the existence of skeleton in this era, before this era no such things has been observed, even the development of sexual reproduction.

The Phanerozoic era comes after the Precambrian era, more advanced kinds of fossils of animals had been observed in this era.  Phanerozoic era period of life on earth. Large organisms sudden appearance are seen in the Phanerozoic era i.e. First dinosaurs, mammals, fishes, angiosperms,first vertebrates etc.

5 0
3 years ago
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