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andrew11 [14]
3 years ago
10

Tadpoles use ____________________ to obtain oxygen.

Biology
1 answer:
TEA [102]3 years ago
4 0
Tadpoles use GILLS to obtain oxygen


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Which is more luminous: a main-sequence A Star, or a white dwarf A star?
Mkey [24]

Answer:

A white dwarf

Explanation:

3 0
2 years ago
Dna evidence does equate to innocence or guilt. (points : 1) true false
Anna35 [415]
 <span>DNA evidence does equate to innocence or guilt. FALSE.</span>
3 0
3 years ago
Polymerization and the break down of a polymer are two opposite reactions. What role does a water molecule play in both of them?
ladessa [460]
<span>In the process of polymerization, a chain of similar smaller molecules called monomer join together to create very large molecules called polymer. Through this chemical reaction, water is created as a by-product. In contrast to hydrolysis or breaking down of polymers, a water molecule is used to break the covalent bond that hold the components of a polymer.</span>
8 0
3 years ago
Why would a pea plant that is heterozygous for the tallness trait have the dominant phenotype?
AleksandrR [38]

Answer:

Dominant character is expressed in both the condition i.e. heterozygous and homozygous.

Explanation:

In genetic the dominant allele is signified by capital letter and the allele which is recessive is signified by the smaller letter. The dominant character can be expressed in both the condition that is homozygous dominant(TT) or heterozygous dominant(Tt).  

Therefore even the presence of a single allele of dominant character in the gene, the dominant character can mask or suppress the recessive trait from being appeared in the phenotype. Therefore pea plant that is heterozygous for the tallness trait have the dominant phenotype.

6 0
2 years ago
An apple pie has 2 million (2 x 10^6) Staph. aureus cells in it. The food preparer did not wash his hands and probably inoculate
TiliK225 [7]

Answer:

Explanation:

given cells at incubation = 2 million (2 x 10^6) Staph

cells at the start of incubation = 200 Staph

Total time =6hrs = 360minutes

Recalling that Number of generations = Log(cells at incubation) - Log (cells at the start of incubation)/0.301

  • Number of generations = Log 2000000 - log 200 /0.301

        = 20.93 generations.

  • hence generation time = total time/number of generations

        = 360/20.93 = 17.20minutes

as said, that the apple pie is left after 2hrs, it implies 8hrs (480minutes) will be the new total time; number of generations = total time / generation time

= 480/17.20minutes =  27.90 generations

  • hence total number of bacteria after 8hrs = 2^n generations x initial number of bacteria

       = 2^27.90 x 200 staph = 5.009 x 10^10 bacteria

8 0
3 years ago
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