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Oduvanchick [21]
3 years ago
7

Which direction does energy flow in a ecosyste

Biology
1 answer:
zlopas [31]3 years ago
5 0

ANSWER:

Energy flows through an ecosystem in only one direction!

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When a protein (peptide) hormone binds to receptors on the surface of a cell:
Licemer1 [7]

Answer:

the cell membrane becomes depolarized.

Explanation:

Na+ moves in, K+ moves out.

hope it helps!

7 0
3 years ago
Read 2 more answers
4. Dr. Fisher was found lying on his back. Is it likely that his body was moved after death? Why or why not?
baherus [9]

Answer: No

Explanation:

Dr. Fisher was lying on the back thus postmortem staining can be observed on his back. But if the body was moved after death then postmortem staining can also be observed on different parts of the body that can be the front part.

5 0
3 years ago
If a boy exhibits a sex-linked trait that is carried on the X chromosome, what must be true?
Artemon [7]

Answer:

C. His mother carried at least one allele for that trait

Explanation:

-Men have a single allele of each gene on the X chromosome, inherited from their mother, and a single allele of each gene on the Y chromosome, from their father.

-A sex-linked trait is a trait that is controlled by a gene or an allele located on the sex chromosome.

-X-linked traits are maternally inherited from carrier mothers or from an affected father. Each son born to a carrier mother has a 50% probability of inheriting the X-chromosome carrying the mutant allele.

3 0
2 years ago
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What is a recombinant plasmid?
Mkey [24]

Answer:

DNA plasmid that contains both "old" and "new" gene segments and confers new characteristics to the organism in which it is placed.

Explanation:

During the genetic engineering procedure, which aims at producing an organism with better and desirable characteristics, a DNA called PLASMID is usually used to convey the gene of interest into the organism.

A plasmid is a self-replicating extra-chromosomal DNA found in the bacterial genome. The plasmid becomes a RECOMBINANT PLASMID when a foreign DNA of interest is inserted into it, in order to act as a vector (carrier). Therefore, a recombinant plasmid is a DNA plasmid that contains both "old" i.e bacterial genome and "new" i.e foreign gene segments and confers new characteristics to the organism in which it is placed.

4 0
3 years ago
Neurospora crassa was one of the first eukaryotic microbes to be adopted by geneticists as a model organism. It is a haploid fun
Anna007 [38]

Answer:

A) They have low-maintenance and are easy to keep track of for mutations.

B) The deduction can be "Single Gene Mutation"

Explanation:

After examining the example given in the question on Neurospora crassa and the details about how they reproduce, the following points can be made regarding the questions;

A) It is stated that they form a colony in time and that they are asexual spores and the first reason to choose them would be because they contain somatic cells (which refer to the cells other than reproductive cells) and non-motile gonidia which can multiply by dividing themselves and these properties make the colony's maintenance easy. And since they multiply by division, it is easier to keep track of the occuring mutations.

B) Given the information in the question that the mating is between an albino strain and a wild type, and then between two albino strains which have the same genotype. The results indicate that the strains have gone through single gene mutation during the process.

I hope this answer helps.

6 0
3 years ago
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