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valina [46]
3 years ago
12

Why is the Transfer of energy and matter in a food chain only about10 percent efficient?

Biology
1 answer:
NNADVOKAT [17]3 years ago
4 0

Explanation:

The quantity of energy decreases down each trophic level as only 10% of the energy at the upper level is transferred to the next level, the remaining 90% is lost as heat during metabolic process. Through the energy pyramid we can explain how energy is lost at each trophic level, the number of consumer at each trophic level that will benefit from the transfer of energy depends on the size and quality of the energy from the autotrophs

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4. A type B woman whose mother was type O marries a type O man. What will be the
choli [55]
These are the possible genotype, B or O and the phenotype I can not find since I don’t know any of their characteristics

4 0
2 years ago
A BbGg x bbgg cross yields a phenotypic ratio of approximately 5 black eyes, green skin : 5 orange eyes, white skin : 1 black ey
kifflom [539]

Answer:

D.Mendel's law of independent assortment is being violated.

Explanation:

According to Mendel in his law of independent assortment, the allele of one gene gets sorted into gametes independently of the allele of another gene. He discovered this when he performed a cross involving two characters i.e. dihybrid cross, which he obtained a F2 phenotypic ratio of 9:3:3:1. This ratio is only possible if each allele of each gene is represented in each gamete i.e. a dominant allele of the first gene is equally likely possible to be contained with a dominant or recessive allele in the second gene.

If this occurs according to the Mendel's law of independent assortment, a total of four possible combinations of gametes should be produced by each parent organism. When this 4 gametes are crossed in a punnet square, a total of 16 offsprings will be possible.

However, in this case, a total of 12 offsprings were produced, depicting that the alleles did not separate independently of one another to produce four possible gametes.

3 0
3 years ago
Selling food locally increases sustainable use of the land because crops can be rotated more easily. What is another benefit of
Alenkinab [10]

Answer:

A. Less CO2 emitted from transportation

Explanation:

The other answer options don't make as much sense, since it would basically be from farm to table, answers B and D don't make sense. As for C, farmers would probably end up making more and if not the same, because they'd be able to directly sell a higher percentage of their yieldings from the crop because little to no transportation is required (less bruised or damaged goods) and the store or supermarket they sell it in wouldn't be taking a percentage of their earnings.

3 0
2 years ago
Read 2 more answers
Which of these are true regarding eukaryotes? (choose all that apply)
OleMash [197]

Answer:

b. During replication there is both a leading strand and a lagging strand .

c. Each replication bubble has two replication forks.

Explanation:

Eukaryotic chromosomes have multiple origins of replication to replicate the long chromosomes at a higher rate.

The two DNA strands have opposite polarity, that is, 5' end of the one DNA strand is present opposite to the 3' end of the other DNA strand. DNA replication occurs only in 5' to 3' direction and the direction of the movement of the replication fork is also 5' to 3' direction.

To allow the DNA replication in 5' to 3' direction on both strands, one strand is replicated discontinuously in the direction opposite to the movement of the replication fork.

The discontinuously replicated strand is lagging strand while the other one is the leading strand.

DNA replication in eukaryotes occurs bidirectionally as two replication forks are formed at each replication bubble, one at each end of the replication bubble.

The presence of multiple origins of replication and the bidirectional process allows the replication of large eukaryotic DNA at a considerable fast speed.

7 0
3 years ago
Ugu and ugc both code for cysteine. a change from ugu to ugc would be what type of mutation?
lianna [129]
UGU and UGC both code for cysteine. A change from UGU to UGC would thus be a silent <span>mutation.</span>
8 0
3 years ago
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