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Dennis_Churaev [7]
3 years ago
7

What type of sound is particularly effective for many marine mammals because it allows sound to travel for very long distances i

n water?​?
Biology
1 answer:
kifflom [539]3 years ago
3 0
They produce narrow-band high-frequency sound to help them navigate in water. These high-frequency sounds are used in echolocation.  Echolocation is used to identify and locate prey and also avoid the predators. Marine mammals like whales and dolphin use echolocation in different manners.
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The secondary structure of proteins results because of _____ bonding between molecules in the protein molecules' backbone.
topjm [15]

Answer:

Hydrogen bonding

Explanation:

The newly synthesised proteins as a result of the process of translation are linear structures formed by linear arrangement of amino acids.

The linear structure of a protein is known as the primary structure which changes its conformation and take the shape of either the helix or the pleated sheet. This helical or pleated sheet structure is known as a secondary structure.

The secondary structure is formed due to the bond formed between the hydrogen of the carbonyl group and the amino group which form the backbone of the protein structure. The hydrogen bond causes the linear polypeptide to form spiral helical or bend pleated sheet.

Thus, Hydrogen bonding is the correct answer.

6 0
3 years ago
True or false:<br><br> Fish are considered carbon-based organism
vekshin1

Answer:

Its how you see it.

Explanation:

1.Life on Earth is based on carbon, likely because each carbon atom can form bonds with up to four other atoms simultaneously. This quality makes carbon well-suited to form the long chains of molecules that serve as the basis for life as we know it, such as proteins and DNA.

2.All life on earth <em><u>can be thought</u></em> of as "carbon-based." Just be careful about turning this around backwards. It is true that all living things contain carbon compounds... but the opposite is not true. Just because a certain material is referred to as organic does not mean it is or ever was alive.

6 0
3 years ago
According to the starling law, ____ effects on cardiac rate and contractility include decreasing the rate of contraction and inc
ehidna [41]
According to the starling law, parasympathetic effects on cardiac rate and contractility include decreasing the rate of contraction and increasing the filling time resulting in a stronger contraction.
The Frank-starling law of the heart states that the stroke volume of the heart increases in response to an increase in the volume of blood filling the heart when all other factors remain constant.
8 0
3 years ago
Read 2 more answers
Explain the purposes of gene expression studies. Describe the use of DNA microarray assays and explain how they facilitate such
denis-greek [22]

Answer:

Both gene expression and DNA micro array study about the expression of gene during different stages of development.

Explanation:

The main purpose of gene expression studies is to determine the level of mRNA expressed at different stages of transcription in a tissue or at different stages of cellular development. If a gene is not “ON” during synthesis of RNA and protein, then the desired proteins are not produced. Such studies allow us to turn on such genes.  

DNA microarray  assays easily identify and determine the network of gene expression across the entire genome. The common application of DNA microarray include – mutation analysis and detection, assessment of gene cop, immunoassays etc.

4 0
3 years ago
An object such as a piece of gold was cut into 2 halves, explain what would happen to its density?
nikdorinn [45]

Answer:

The density would stay the same.

Explanation:

The density would stay the same as density is an intensive property meaning it doesn't change based on the amount of matter that you have.

4 0
3 years ago
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