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iren [92.7K]
3 years ago
6

Help again......thanks

Biology
1 answer:
Sati [7]3 years ago
8 0
C. Student B and D
Hope that helps!
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What term is used to describe 100’s or 1000’s of amino acids chemically combined?
hjlf

Answer:

Polypeptide

Explanation:

Amino acids are the building block and simplest unit of protein molecules. The structural composition of each amino acids is made up of an amine group (-NH2), a carboxylic acid group (-COOH), a hydrogen atom (H) and a R side chain that differentiates every amino acid from one another.

In a reaction process called condensation, amino acids are chemically joined together via the amine group of one and the carboxylic group of another. This process releases water molecule (H20) to form a bond called PEPTIDE bond between the amino acids. Several amino acids in their 100’s or 1000’s that are chemically joined this way forms a POLYPEPTIDE chain, which in turn forms the protein molecule.

8 0
3 years ago
In which parts of the kidney are nephrons located?. . . . A.Renal vein and renal artery. . . . B.Renal pelvis and renal vein. .
Lunna [17]
Answer: C. Medulla and Cortex

The nephrons are found at the cortex-medulla junction. There are what we call as the juxtamedullary nephrons and cortical nephrons referring to their designated locations. The juxtamedullary nephrons are involved in the creation of concentrated urine of a person. 

4 0
3 years ago
Read 2 more answers
What is the speed of a wave with a wavelength of 3 m and a frequency of .1 Hz? 0.03 m/s 0.3 m/s 3.1 m/s 30 m/s
Natasha_Volkova [10]

Answer:

The correct answer is option b, 0.3m/s

Step by Step solution:

The relation between speed, wavelength and frequency of a wave is given by the following equation:  

Speed = Wavelength x Frequency

Substituting the values in above equation we get –  

= 3  x 0.1  

= 0.3 m/s  

7 0
3 years ago
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What scientific breakthrough did darwins research lead too?
jeka57 [31]
The theory of evolution would be the correct answer.

I hoped this helped!
7 0
3 years ago
Which chemical change releases the most energy for use by a plant cell?
zhenek [66]

Answer:

b

Explanation:

Cellular respiration; complementary reaction to photosynthesis, because it's the reaction that cells use to break down glucose molecules and release atp.

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