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trasher [3.6K]
3 years ago
6

Which one is the right definition, Magnetic Force

Biology
1 answer:
Maurinko [17]3 years ago
5 0

B. A non-contact force that is generated from moving charges.

Explanation:

  • Magnetic force is a non -contact force
  • It is an attractive force or repulsive force.
  • It acts between two charged particles by virtue of their motion.
  • Materials that exhibit magnetic force of attraction or repulsion are called magnets.
  • Uncharged material that are attracted by magnets are called magnetic material.
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Scientists studied reproduction in the New Zealand mud snail to answer the question, “Are there benefits to reproducing sexually
pogonyaev
<span>D) Asexual reproduction is advantageous over sexual reproduction because it decreases the snails' need for social interaction.</span>
4 0
3 years ago
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A ____ is a procedure performed for definitive treatment rather than diagnostic purposes.
shepuryov [24]

The answer is principal procedure, this is a procedure in which they perform treatment in a more definitive way than other ways such as having to do diagnostic procedure or other purposes that can contribute to the treatment or the procedure being done.

5 0
3 years ago
A population of Muscovy ducks contains 13 birds with black masks and 37 birds with red masks. Red masks are the dominant trait.
Semmy [17]

Answer: Black allele has frequency of 0.14.

              Red allele has frequency of 0.86.

             The frequency of heterozygotes is 0.241

Explanation: <em>Hardy-Weinberg model </em>states the frequency of alleles in a population will stay in equilibrium as long as there are external influences. It is also used to determine alleles frequencies using the following equations:

p+q=1

p^{2}+2pq+q^{2}=1

p represents frequency of dominant allele;

q represents frequency of recessive allele;

2pq is frequency of heterozygotes;

For the frequency of red allele, which is dominant, we can use:

p^{2}=\frac{37}{13+37}

p^{2}=\frac{37}{50}

p^{2}=0.74

p=\sqrt{0.74}

p = 0.86

For the black allele:

p+q=1

q=1-p

q=1-0.86

q = 0.14

Frequency of heterozygotes is

2pq = 2(0.86)(0.14)

2pq = 0.241

<u>Frequencies for a population of Muscovy ducks are </u><u>0.86 for red allele, 0.14 for black allele and 0.241 for heterozygote.</u>

5 0
3 years ago
A microbial ecologist wants to study a bacterium that is adapted to growth in lake water containing very low nutrient concentrat
vladimir2022 [97]

Hello. You forgot to enter the answer options. The options are:

"A) This organism cannot be grown in the lab.  B) a batch culture using a low-nutrient medium  C) on Petri plates containing a low-nutrient medium  D) a chemostat using a low-nutrient medium"

Answer:

D) a chemostat using a low-nutrient medium

Explanation:

The most appropriate culture medium for this bacteria to be grown in the laboratory is a chemostat using a medium with low nutrient content. This is because this culture provides similar resources to the resources that this bacteria finds in its natural habitat. Thus it would be possible for these bacteria to develop in the laboratory, presenting characteristics similar to those it presents in nature, allowing the full study of this microorganism.

Culture media products prepared to provide nutrients necessary for the growth of microorganisms outside their natural habitats. These media are prepared in laboratories and are essential for all branches of microbiology.

4 0
3 years ago
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7. Anticodons are part of the structure of
Orlov [11]

Answer:

Anticodons are part of the structure of tRNA

i.e transfer RNA

5 0
3 years ago
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