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earnstyle [38]
3 years ago
8

Science is painful I will give brainily to the correct answer :D

Biology
2 answers:
MariettaO [177]3 years ago
5 0

Answer:

a

Explanation:

expeople1 [14]3 years ago
3 0

Answer:

Bacteria are classified as prokaryotes because they lack a nucleus and membrane-bound organelles.

Explanation:

Really hope this helps!

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Genetic variation in bacterial populations cannot result from
zmey [24]

Answer:

Meiosis

Explanation:

Gene recombination refers to the mixture of genes from different individuals that occurs during sexual reproduction. Gene recombination is responsible for mixing between genes, which results in genetic variation in a bacterial population.

Genetic variability in a bacterial population occurs through three types of mechanisms: transformation, conjugation and transduction. However this genetic variation does not occur through Meiosis.

Transformation is the incorporation of free DNA by the bacterial cell. Conjugation is the process of transferring DNA from one bacterium to another, involving contact between the two cells. Transduction is the transfer of genetic material between cells, mediated by bacteriophages.

3 0
3 years ago
Which description accurately describes the cell membrane?
Alex Ar [27]

Answer:

b. a semi-permeable double layer of phospholipids that have hydrophilic heads and hydrophobic tails

Explanation:

B is correct as the cell membrane is selectively semi-permeable. It is selectively semi-permeable because this quality allows it to control what can and can't enter the cell, and how it does so.

The cell membrane also has a phospholipid bi-layer comprised of a double layer of phospholipids which have hydrophilic head and hydrophobic tails. This is because the heads are made of phosphate and are polar and are therefore attracted to water (hydrophilic), while the tails are made of lipids (i.e. fats, oils) which do not mix with water and are therefore hydrophobic.

The properties of each phospholipid is also why they form the double layer structure, the hydrophilic heads naturally face outwards into the water and protect the hydrophobic tails on the inside.

Hope this helped!

4 0
3 years ago
Is flooding a natural part of the water cycle
bearhunter [10]

Answer: Floods are a natural part of the water cycle, but they can be terrifying forces of destruction. ... Floods usually occur when precipitation falls more quickly than that water can be absorbed into the ground or carried away by rivers or streams.

Explanation:

4 0
2 years ago
How does conservation affect biodiversity
FinnZ [79.3K]
Conservation is the protection of an organism or a group of organisms (like an endangered species or forests).

Biodiversity is the numerous amounts of species habitated in our earth. The more biodiversity, the better.

Conservation protects biodiveristy, thus, allowing more species to survive and thrive.
3 0
3 years ago
Which of the following represents the codon sequence that
Elden [556K]

Answer:

ATAGTCCTA

Explanation:

a and t pair together and c and g so it would be ATAGTCCTA i think

3 0
3 years ago
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