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zzz [600]
3 years ago
10

Purple sulfur bacteria and filamentous sulfur-oxidizers both A. accumulate sulfur as intracellular granules.B. fix nitrogen.C. p

roduce oxygen from carbon dioxide.D. use gliding motility.
Biology
1 answer:
aksik [14]3 years ago
3 0

Answer:

Option A, accumulate sulfur as intracellular granules.

Explanation:

Purple sulfur bacteria  belong to the group of Proteobacteria. These probacterias are  anaerobic  in nature and yet are able to photosynthesise. They are usually found in  water environments  such as hot springs, stagnant water etc. They use sulphur (either in the form of sulfide, or thiosulfate) as an electron donor in their photosynthetic activity to oxidise sulfur thereby producing granules of elemental sulfur.

while filamentous sulfur oxidizers use nitrate instead of oxygen to oxidize sulfide thereby producing granules.

Hence, option A is correct.

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The process by which an individual seeks out environments that correspond to their genotypic characteristics is described as the
Lilit [14]

Answer:

Active genotype - environmental effects

Explanation:

There are primarily three types of co-relation between genotype and environment which are as follows –  

a) Passive genotype –environment effect – This depicts the relationship between the genetic characteristics acquired by a child from his/her parents and the environment in which he/she is raised.  

b) Reactive genotype –environment effect – This represents a relationship between genetically acquired behaviour from parents and the reaction corresponding to such behaviour.  

c) Active genotype –environment effect – This represents a relationship between genetic tendency of an individual and the environment condition selected by an individual .

5 0
4 years ago
Some of the lipid groups appear similar, but changing a few components significantly alters their biological properties. identif
tekilochka [14]
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8 0
3 years ago
Is diffusion the only way materials can enter the cell? Explain.
Anettt [7]
Of course not! There's lots of ways materials can enter. It also depends on the cell; whether it has cell wall and cell membrane or only cell membrane.

Besides diffusion, there's also osmosis and active transport.

If the cell has only cell membrane, it means it's partially permeable, which means osmosis can happen.

*hope this helps :)
5 0
4 years ago
The mantle makes up ______ % of Earth’s mass.
galben [10]

Answer:

I think the answer is 84% or 67%

Explanation:

I googled it

7 0
4 years ago
Anyone know the answer?
Mariana [72]

Answer:

the answer c. is correct  

Explanation:

During DNA replication, the two parental DNA strands must be separated so that both strands can be copied. The resulting structure known as 'replication fork' is generated by helicase enzymes that break hydrogen bonds that hold DNA strands together, thereby the two strands of the DNA double helix uncoil at a specific location called the origin. DNA replication always proceeds in 5' to 3' direction. In consequence, a new DNA strand referred to as 'leading strand' is continuously synthesized because this strand grows in the same direction (5' to 3' direction) of the replication fork's movement, while other new DNA strand referred to as 'lagging strand' is synthesized discontinuously in short pieces called Okazaki fragments.

8 0
3 years ago
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