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Ann [662]
3 years ago
13

The fins of fishes and flipper of whale are:

Biology
2 answers:
mezya [45]3 years ago
8 0
It is Analogous. Analogous parts perform the same functions but the structure is not the same
VMariaS [17]3 years ago
4 0

Homologous

The fins of fishes and flipper of a whale are homologous structures since they have different structure but similar structure

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A complete circuit contains two parallel-connected devices and a generator for providing the electromotive force. The resistance
romanna [79]
The answer is D. 3.33 A

In parallel connected devices, circuits are also placed parallel. It is known that in parallel circuits, total voltage is equal to the voltage of each device. 

So, we know that:
Device 1 - R1 = 12 ohms
Device 2 - R2 = 4 ohms
Total voltage - V = 40V = V1 = V2

If V = I × R, for the first device is V1 = I1/R1.
⇒ I1 = V1 ÷ R1
⇒ I1 = 40 V ÷ 12 ohms
⇒ I1 = 3,33 A
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3 years ago
Select the best answer for the question
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A because idn hope u find the answer
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3 years ago
The sequence of nucleotides in a messenger RNA molecule (mRNA) is determined by the sequence of nucleotides in a a transfer RNA
ycow [4]

Answer:

D-DNA molecule

Explanation:

The process of copying the sequence of  DNA nucleotide  sequences to the mRNA is called   Transcriptions. It  is the  first stage in gene expression   for protein synthesis, and<u> it involves the unwinding of the DNA double strands  molecules  by enzyme</u><u> </u>DNA Helicase into two  free strands,(by melting the hydrogen bonds between organic  bases), a process   initiated by the binding of enzymes RNA Polymerase to  the promoter sites on the DNA  template; the alignment of the mRNA  nucleotides on the  single DNA template strands in 3'-5  direction; the formation of  hydrogen bonds between the organic bases  of the template DNA  and   that of the messenger RNA single strands,(  and phosphodiesterbonds  within RNA nucleotide ), to form DNA-RNA complex.

The copying is done in  complimentary anti parallel fashion;5'-3' prime. direction.

 The  hydrogen bonds, between the bases  DNA-RNA complexes breaks,and  the releases  the mRNA  which  exists through the nuclear pores.Thus  this <u>leads to copying of the the coded messages as seqeunce of DNA , from the DNA to the mRNA for gene expressions.</u>

8 0
3 years ago
8. Which zone contains floodplains in a strcam system?
Vikentia [17]

Does this help?

A floodplain (or floodplain) is a generally flat area of land next to a river or stream. It stretches from the banks of the river to the outer edges of the valley. A floodplain consists of two parts. The first is the main channel of the river itself, called the floodway.

5 0
2 years ago
3. When did reptiles first appear in the fossil
dexar [7]

Answer:

A

Explanation:

Reptiles arose about 310–320 million years ago during the Carboniferous period.

4 0
3 years ago
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