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saul85 [17]
3 years ago
10

The selective advantage of radial symmetry for sessile and free floating animals

Biology
1 answer:
Sever21 [200]3 years ago
7 0

Answer:

organisms, radial symmetry is useful because the animal can just "sit down" and grab food or detect threats from all directions.

Explanation:

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g If a colony of bacteria starts with 1 bacterium and doubles in number every 20 ​minutes, how many bacteria will the colony con
Lynna [10]

Answer: 2.81 x 10∧14 baterias after 16 hours.

Explanation:

Hi, first we have to find how many 20 minute intervals are in 16 hours.

If 1 hour = 60 min, 16hours = 960 minutes (16 h x 60 min / 1 h)

If we divide the 960 minutes (16 hours) by 20 minutes we obtain 48. (960/48)

There are 48 twenty minutes intervals in 16 hours.

Now we have to apply the exponential growth formula:

P (t) = Po (1 +r) ∧t

Where:  

P (t) = population at time t  

P (0) = initial population (1)

r = growth rate (1)

t = time (48)

Replacing with the values given:

P (t) = 1 (1 + 1) ∧48= 2.81 x 10∧14

2.81 x 10∧14 baterias after 16 hours.

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3 years ago
What would happen if there were no germ-line mutations or genetic recombination possible in a population? (2 points) Genetic var
barxatty [35]
Germ-line mutations are mutations that would be passed down to future generations, and recombinations are where the information each parent passes down to the offspring is shuffled. 

The genetic variation would have to come from random events: False
Only alternate generations would express any genetic variable: False
Body cell mutations would be the only source of heritable genetic variation: False
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3 0
3 years ago
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What would happen if we didn't have photosynthesis and cellular respiration?
gayaneshka [121]
1)Without photosynthesis: If we didn't have plants, algae and bacteria  to do the photosynthesis, CO2, a air pollutant wouldn't be converted in to glucose for those organisms and there would be no more Oxygen released to the atmosphere. Less photosynthesis  means less oxygen production and many organisms, like us, would die.
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Ultimately, will cause the death of the aerobic organism.

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4 years ago
Given below are four statements. Some or all may be erroneous (wrong). Rewrite the correct statements after making suitable corr
joja [24]

I – False

II – False

III – True

 

A cellulose cell wall surrounds both the bacterial and plant cell. FALSE

TRUE – A Cellulose cell wall surrounds only plant cells.

 

Lysosomes and mitochondria are responsible for respiration in prokaryotes and eukaryotes respectively – FALSE

 TRUE – Mitochondria are responsible for respiration in both prokaryotes and eukaryotes

 

Similarities of fossils of chimpanzees and humans are an example of Molecular Homology – TRUE

8 0
4 years ago
A major source of renewable energy in developing countries is _____. *
Troyanec [42]
The answer is B. Hope this helps. Please mark Brainliest:)
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