Are you likley to find zooplanton in the aphotic, benthric zone of a ocean

1 answer:

7 0

No. Zooplankton feed on phytoplankton. Phytoplankton cannot photosynthesize in the dark. (The Benthric Zone is the lowest level of the ocean/a body of water, no sunlight can really reach there.)

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When plants undergo photosynthesis, they take in water and other nutrients from the soil and carbon dioxide from the air to prod

salantis [7]

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3 years ago

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Meselson and Stahl used density labeling of DNA to show that DNA replication occurs via a semiconservative mechanism. In their e

cricket20 [7]

Answer:

The organism previously used 15N for replication so all the DNA molecules were of 15N15N type. Then the organism is shifted to a medium where only 14N is available for replication.
According to semi conservative mode of replication, a newly synthesised DNA molecule consists of one new strand and one parental strand. So after the first round of replication, All the 15N strands will synthesise new DNA strands using 14N resulting into intermediate 15N14N DNA molecules. Hence, only one band would be observed (15N14N) above the original 15N15N band since 15N14N has lighter isotope too so it will be lighter than 15N15N molecules and will lie above it.
After second round of replication, 15N strand from 15N14N would synthesise another 14N strand. 14N strand from 15N14N molecules will also synthesise another 14N strand. So now, 50% of the DNA molecules will be of 15N14N intermediate type and 50% of them will be of 14N14N type.Two bands will be observed above the original 15N15N band. One band of 15N14N molecules will be right above it and other band of 14N14N molecules will be even higher because it is the lightest band since it has only the lighter isotope of nitrogen.

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3 years ago

PLEASE HELP

mart [117]

Answer:

Explanation:

AA or Aa → Enough normal enzyme to make melanin in skin and hair → Normal skin and hair color aa → Defective enzyme for melanin production → Very pale skin and hair color (albino) Page 3 2.

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What Amendments affect election or tenure of officeholders?

MrRissso [65]

Answer:

the twenty second amendments to the united states

Explanation:

limits the number of times of a person is eligible for election to the office of president of the united states to two,and sets additional eligibility conditions for president who succeed to the unexpired terms of their predecessors

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It is mistakenly believed that the rapid evolutionary changes of punctuated equilibrium are the result of some mechanism of evol

netineya [11]

Answer: Natural selection can be defined as the differential survival and reproduction of members of the population of a species that have suitable traits to survive in a population of species.

Explanation:

The punctuated changes in the population of species have been found inordinately faster in the geological time scale, but changes per-generation have been relatively slow. Also, the rate of evolution in such a population is also slow. The punctuated changes in the population are because of evolution but the per-generation changes are the outcomes of the natural selection, in which only the beneficial traits are passed from one generation to another.

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