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Yuri [45]
3 years ago
15

All organisms are composed of cells. the size and shape of a cell determines how well it can deliver nutrients to its interior.

since all cells and organisms depend upon the efficient delivery of gases, nutrients, and other important molecules, the relationship between a cell's surface area and its volume is an important regulating concept
Biology
1 answer:
lord [1]3 years ago
6 0
Im not sure how to awnser this, whats the question?
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Which statement about DNA replication is true?
Talja [164]

Answer:

D. Prokaryotes only have one origin of replication to initiate replication.

Explanation:

The DNA of prokaryotes is smaller than that of eukaryotes. So, prokaryotes have only one origin of replication. Origin of replication is the region of DNA where the process of DNA replication starts. The helicases recognize and bind to the origin of replication to start the melting of DNA double helix for replication.

DNA replication starts at the single origin of replication and stops at termination in prokaryotes.  

3 0
3 years ago
In hogs, a dominant allele B results in a white belt around the body. At a separate locus, the dominant allele S causes fusion o
GREYUIT [131]

Answer:

D) B/b;S/s (x) b/b;s/s

Explanation:

Parent 1 : belted syndactylous sow

Since it is showing dominant phenotype for both the traits, it can either be BBSS or BbSs

Parent 2: unbelted cloven-hoofed

Since it is showing recessive phenotype for both the traits, it can only have bbss genotype

If we assume parent 1 to be BBSS all the resulting progeny with bbss will have dominant phenotype which is not the case.

If we assume parent 1 to be BbSs:

BbSs X bbss =

BbSs : belted syndactylous

bbSs : unbelted syndactylous

Bbss : belted cloven

bbss : unbelted cloven

The progeny will be produced in 1:1:1:1 ratio which means that each of them will make 25% of the population.

Hence, parent 1 will have BbSs genotype and parent 2 will have bbss genotype

7 0
3 years ago
The greater the number of amino acid differences in a protein like hemoglobin, the more closely related two species are.
Leni [432]
This is false. The more similarities the the amino acid sequences have, the closer related are the species. Therefore the more differences in the sequence, the more further related the two species are.
8 0
2 years ago
How was the state of the ecosystem before the wolves were introduced?
mylen [45]

hi !

Explanation:

when wolves were reintroduced , the research has shown that in many places they have helped revitalize and restore ecosystems. They improved the habitat and increase populations of countless species from birds of prey to pronghorn, and even trout.

6 0
2 years ago
Structures as different as human arms, bat wings, and dolphin flippers contain many of the same bones, which develop from simila
AlexFokin [52]

Answer:

homology.

Explanation:

These similarities in structural are an example of homology because human arms, bat wings, and dolphin flippers are different organisms that have the common ancestor. The similar bone structure of different organisms and different its function is due to common ancestor. Homology similarity of the structure and physiology of different species of organisms due to their descent from a common evolutionary ancestor so we can say that these structural similarities are an example of homology.

8 0
2 years ago
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