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prisoha [69]
3 years ago
10

Many experiments on earths early atmosphere have resulted in formation of organic molecules but have never resulted in cell form

ation in which of the following ways do the experimental conditions prevent cell formation in the lab?
A. Ultraviolet light intensity of early earth cannot be reproduced
B. Gas combustion of early earth cannot be replicated
C. The nutrients earlier are different from those found today
D. The experiments cannot last for billions of years as it did on earlier
Biology
2 answers:
lubasha [3.4K]3 years ago
8 0
D) the expiraments cannot last billions of years as it did earlier on
swat323 years ago
8 0

Answer: Option D

Explanation:

The early earth conditions were different from the conditions that exists today. Too much of oxygen in the atmosphere hinders the formation of cells.

Many experiments were performed to form organic compounds but none of them helped to form cells.

This is because after the formation of organic molecule, it took time for the formation of cells. There is no such experiment that can be performed for such a longer duration of time, so cells cannot be formed.

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Which organisms are not examples of an adaptive radiation?
gavmur [86]

Answer:

Option B, Mammals and reptiles in the post-dinosaur age.

Explanation:

Adaptive radiation is mechanism through which species evolve very fast from common single ancestors. In simple words two different species are said to have evolved through adaptive radiation when they have descended from a single lineage. This is not the case with mammals and reptiles.  

Generally in adaptive radiation, a species evolve when it faces new environmental challenges due to change of habitat or area. For example mammals have evolved from dinosaurs.  

Hence, option B is correct

5 0
3 years ago
What is a point mutation?
Veronika [31]

Answer:

A) A single base pair change.

Explanation:

Point mutation is a change in a single base pair of a nucleotide. This comes as a results of mistakes made during DNA replication, induced by ultravoilet radiations, extreme heat and X-rays. There are three types of point or substitution mutations; change, deletion and insertion. The nucleotide bases are either mistakenly inserted, changed or deleted, thus changing the resulting protein or amino acid being coded for.

3 0
3 years ago
To understand the chemical basis of inheritance, we must understand the molecular structure of DNA.
earnstyle [38]

Answer:

C) reductionism

Explanation:

The approach of reductionism is applied to decipher the basic concepts that rule some complex life processes. In this approach, the complex life processes can be interpreted by explaining the physical and chemical structure of involved components and their interactions. DNA molecules store genetic information. Inheritance means the transfer of genetic traits from one generation to the next. Therefore, the chemical structure of DNA is the application of reductionism to understand the chemical basis of inheritance.

4 0
3 years ago
What would happen to the other organisms if the producers disappeared?
frez [133]
If the producer were to disappear then all the other organisms will either go extinct, survival of the fittest, or have to adapt to the change. 
8 0
3 years ago
If all variation among individuals in a population is due to differing genotypes alone, heritability is _____, and the slope of
AVprozaik [17]

Answer:

<em>If all variation among individuals in a population is due to differing genotypes alone, heritability is 100%  and the slope of the line used to measure it is 1.</em>

Explanation:

If the genes play no role in the variation among organisms of a species, then the heritability will be zero percent. Hence, if all the variations among individuals of a population occur due to the differences in the genotype, hence the heritability will be 100%. This is because genes are the hereditary molecules and the genotype of an organism comprises of the different genes present in an organism.

3 0
3 years ago
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