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vova2212 [387]
3 years ago
15

What is the current world population?

Biology
1 answer:
Vikentia [17]3 years ago
6 0

About 7.5 billion people

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An obligate anaerobe is an organism that would die in an oxygenated environment. What could be assumed about these organisms?
makkiz [27]
The correct option is C.
Obligate anaerobes are micro organisms that are poisoned and killed when exposed to the normal atmospheric oxygen concentration. These organisms can only survive in the absences of oxygen, therefore, they carry out only anaerobic form of respiration in order to obtain the energy that they need. <span />
7 0
3 years ago
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You have four manuscripts to type. One manuscript is 12 pages long, the second is 18 pages long, the third is 8 pages long, and
kozerog [31]

Answer:

66

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12+8+18+28=66

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3 years ago
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You determine that you have only three copies left of an important DNA fragment, so you decide to amplify it. Using flanking pri
kicyunya [14]

Hello. This question is incomplete. The full question is:

"You determine that you have only 3 copies left of an important DNA fragment, so you decide to amplify it. Using flanking primers, how many PCR cycles would you have to run to generate over one billion (10^9) copies of the fragment? "

Answer:

Approximately 29 cycles of PCR would be required.

Explanation:

As you may already know, PCR is a technique used in molecular biology that allows part of a DNA molecule to be recycled into millions of copies.

PCR allows this replication to be done through cycles. Each PCR cycle lasts about 2 minutes and allows the DNA molecule to undergo the separation of the strands, the binding of the primers and the synthesis of new DNA strands through DNA polymerase. This cycle is usually repeated 32 times, but this number may change depending on the number of copies the researcher thinks is necessary.

In this case, if a researcher wants 10 ^ 9 copies of DNA, he must do the following calculation to find the number of PCR cycles needed:

32 ^ x = 10 ^ 9

x = 28.3 = approximately 29 cycles.

4 0
3 years ago
Which of the following provides the best comparison between reptiles and fish? A) They both have scales, but fish are ectothermi
sveta [45]
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Fish and reptiles both are ectothermic but fish have gills and reptiles have lungs. Ectothermic organisms do not have an internal mechanism of regulating their body temperature and are dependent on their atmosphere for temperature regulation. Fish, reptiles and invertebrates are examples of ectothermic organisms.
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3 years ago
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What is "A C G G A T C G" as an mRNA strand?
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UGCCUAGC i think m not fully sure
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