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krok68 [10]
3 years ago
7

A species that plays a critical role in maintaining the structure of an ecological community and helps to determine the types an

d numbers of various other species in the community is known as a predator. a keystone species. the primary species. the dominant species. the alpha species.
Biology
1 answer:
amm18123 years ago
7 0

Answer:

Option A, Key stone

Explanation:

A keystone species plays a major role in an ecosystem as it is the species whose presence effects all other species in the ecosystem .In general a keystone species is always a dominant predator that feed on prey population. If it is removed, the prey population will explode and the population diversity will reduce. For example - bison, prairie dog etc.  

Hence, option A is correct

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What happens to the glucose molecule during the process of cellular respiration?
Lady_Fox [76]
It is broken down and parts of it are turned into ATP
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3 years ago
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How accurate is DNA and fingerprint technology, and when did it emerge? What level of human error still plays a role in this typ
Firdavs [7]

Answer:

DNA and fingerprint technology is said to be very accurate as it uses chemicals to separate strands of your own unique DNA to reveal the unique parts of your genome. which is your genetic make-up

This technology emerged in 1984 and invented by Professor Sir Alec Jeffreys who realized that you could detect variations in human DNA, in the form of these mini-satellites to produce a pattern unique to an individual

Human error still plays a role in terms of lab staff who make errors in conducting the DNA analysis, interpreting it or reporting the results of the analysis sometimes it occurs in entering the resulting DNA profile into a DNA database system which may result from a failure to comply a procedure, misjudgement, or some other mistake. There are protocols and precautions which can be introduced to minimise the opportunity for error during analysis or interpretation, however, the potential for human error cannot be fully eliminated.

4 0
3 years ago
Which statement describes a characteristic of a plant cell but is not true for an animal cell? 1. The cell has a nucleus to cont
Gre4nikov [31]

Answer:

4. The cell has chloroplasts to turn sunlight into food

6 0
3 years ago
A biochemist isolated and purified molecules needed for dna replication. Whne she added some dna, replictation occursd but the d
liberstina [14]

Answer:

She left Ligase enzyme out of the mixture.

Explanation:

DNA replication is the process of formation of new molecules of DNA from the existing one. This process occurs in semiconservative way i.e each new strand consist of one newly synthesised strand and one old parent strand that act as template for the formation of new strand. replication on one strand occurs continuously from 5 prime to 3 prime but on other strands it occurs discontinuously from 5 prime to 3 prime because DNA polymerase moves only in one direction from 5 prime to 3 prime. Hence in discontinuous strands gaps remained. These gaps are filled by Ligase enzyme.

Requirements for DNA replication:

DNA replications needs

Primers

DNA Polymerase enzyme

DNA helicase enzyme

Single nucleotide binding protein

dNTPs

and Ligase enzyme.

Correct choice:

She left Ligase enzyme out of the mixture.

3 0
3 years ago
Now that you have come up with an equation that describes the relationship between amounts of different nucleotide bases in DNA,
Elza [17]

Answer:

The correct answer will be- 21, 29, 29

Explanation:

In a DNA sequence, the nucleotide base pairs on one strand of DNA are  complementary to the base pair on other strand of DNA.

According to the Chargaff rule, Adenine binds Thymine and Cytosine binds Guanosine which shows that the amount of A will equal T and the amount of G will equal C.

Therefore, when the amount of C is 21%, then the amount of G will be 21%.

To find amount of AT= 100-GC

                              AT= 100-42

                                AT= 58%

So, AT/2= 29% each

Thus, A=T= 29%

          G=C=21%

5 0
3 years ago
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