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Travka [436]
3 years ago
6

Phase-contrast microscopy is especially useful for detecting bacterial structures like endospores and inclusions because these s

tructures:________
Biology
1 answer:
zysi [14]3 years ago
5 0

Answer: are translucent (permit light to pass through them)

Explanation:

Phase-contrast microscopy is especially useful for detecting bacterial structures like endospores and inclusions because these structures are translucent.

Objects viewed under a phase-constrast microscope appear with a opposite colour, and do not require stain or dye to be viewed

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In a certain population of fruit flies, 640 out of 1000 have red eyes, while the remainder have sepia eyes. The sepia eye trait
irga5000 [103]

Answer:

The correct answer is 160.

Explanation:

Based on the given question, the total number of fruit flies is 1000, of which red eye flies are 640. Thus, the number of sepia eye flies will be 1000-640 = 360.  

On the basis of the Hardy-Weinberg equation, p+q = 1, in which p is the rate of recurrence of one allele, that is, dominant and q is the rate of recurrence of the other allele, that is, recessive.  

q^2 for the population is 360/1000 = 0.36, q = 0.6.  

Therefore, p = 1-q = 1-0.6 = 0.4.  

The frequency of homozygous dominant allele is denoted by p^2 = 0.16.  

Hence, the number of homozygous dominant for red eye color would be 16% of 1000 which will be equal to 160.  

5 0
2 years ago
Read 2 more answers
What significance do the bases AUG, or UGA have? hint use decoder chart needed. A. a. the first one is a start codon and the sec
Minchanka [31]

Answer:

The importance of the AUG and UGA bases lies in the fact that the first one is a start codon and the second one is a stop codon, respectively (option a).

Explanation:

Codons or triplets are sequences of three nitrogenous bases, in the mRNA, that determine the synthesis of a specific amino acid.

  • <em>AUG </em><em>is called the </em><em>initiation or start codon</em><em>, and is usually at the beginning of a peptide synthesis, in addition to encoding the amino acid methionine. </em>
  • <em>UGA</em><em> is a</em><em> termination or stop codon</em><em> found at the end of a petid chain when it is complete.  UAA and UAG codons are also STOP or termination codons and, together with UGA, do not code for amino acids.</em>

The biological importance of start and stop codons is to initiate the synthesis of a protein and to stop the addition of amino acids when their size is adequate.

6 0
3 years ago
Determine the new concentration, in mg/mL, of the starch solution you diluted in the Erlenmeyer flask. Recall from the Procedure
Semmy [17]

Answer:

0.05 mg/mL  ( B )

Explanation:

Given data:

20 mg/ml starch

2% solution = 2g of solute is in 100g of solvent

<u>Determine the new concentration in mg/ml </u>

Dilution equation = C1V1 = C2V2

new concentration ; applying the dilution factor

dilution factor = 1 : 400 ; ( 2 /400 )g = 0.005 g of solute is present in every  100 mL

∴ new concentration = 0.00005 g / 1 mL * ( 1000 mg / 1g ) = 0.05 mg/mL

6 0
2 years ago
Famous cat on tiktok. whats his name?
kvv77 [185]
Ain’t nala the cat the famous one
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2 years ago
Why Kiwi(Bird in NZ) doesn't fly?
aalyn [17]
It’s wings are too small and it’s body is to fat
7 0
3 years ago
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