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cestrela7 [59]
2 years ago
5

What structure is unique to cardiac muscle

Biology
1 answer:
eimsori [14]2 years ago
4 0
Intercalated disks are unique to cardiac muscles.
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Unsaturated fats have ____________ as a part of their structure. these bonds are generally in the ____________ in naturally occu
kodGreya [7K]
Unsaturated fats have at least one double bond as a part of their structure. These bonds are generally in the cis-conformation in naturally occurring fats.
<span>
In the cis conformation, H atoms are on the same side of the double bond, whereas in the trans conformation, they are on opposite sides of the double bond.</span>
8 0
2 years ago
In the gpcr-adenylyl cyclase signal transduction system, which step initiates amplification?
inessss [21]
In the GPCR-adenylyl cyclase signal transduction system, which step initiates amplification?
In the GPCR-adenylyl cyclase signal transduction system, which step initiates amplification?
Protein kinase A activation
The cellular response
Activation of the G protein
Production of cAMP

Production of cAMP

Hope this help
7 0
3 years ago
Which would probably have the greatest effect on a protein's function—a change to the primary, secondary, or tertiary structure?
Alja [10]

Answer:

There are 20 different standard L-α-amino acids used by cells for protein construction. Amino acids, as their name indicates, contain both a basic amino group and an acidic carboxyl group. This difunctionality allows the individual amino acids to join in long chains by forming peptide bonds: amide bonds between the -NH2 of one amino acid and the -COOH of another. Sequences with fewer than 50 amino acids are generally referred to as peptides, while the terms, protein and polypeptide, are used for longer sequences. A protein can be made up of one or more polypeptide molecules. The end of the peptide or protein sequence with a free carboxyl group is called the carboxy-terminus or C-terminus. The terms, amino-terminus and N-terminus, describe the end of the sequence with a free α-amino group.

The amino acids differ in structure by the substituent on their side chains. These side chains confer different chemical, physical, and structural properties to the final peptide or protein. The structures of the 20 amino acids commonly found in proteins are shown in Figure 1. Each amino acid has both a one-letter and three-letter abbreviation. These abbreviations are commonly used to simplify the written sequence of a peptide or protein.

figure1-Protein-Structure

Depending on the side-chain substituent, an amino acid can be classified as being acidic, basic or neutral. Although 20 amino acids are required for synthesis of various proteins found in humans, we can synthesize only ten. The remaining 10 are called essential amino acids and must be obtained in the diet.

The amino acid sequence of a protein is encoded in DNA. Proteins are synthesized by a series of steps called transcription (the use of a DNA strand to make a complimentary messenger RNA strand – mRNA) and translation (the mRNA sequence is used as a template to guide the synthesis of the chain of amino acids which make up the protein). Often, post-translational modifications, such as glycosylation or phosphorylation, occur which are necessary for the biological function of the protein. While the amino acid sequence makes up the primary structure of the protein, the chemical/biological properties of the protein are very much dependent on the three-dimensional or tertiary structure.

5 0
3 years ago
Organelles that are surrounded by two membranes and contain DNA are the
Snezhnost [94]

Answer:

C

Explanation:

The nucleus contains most of the dna and the mitochondria contains a small amount

3 0
3 years ago
A RN is caring for a client who is receiving a blood transfusion and develops urticaria one-half hour after the transfusion has
Lena [83]

Answer:

Stop the infusion.

Explanation:

The blood transfusion can cause sometimes problem to the patient in case when the mismatched blood is given in the patient's body. Sometimes the patient body is unable to uptake the foreign blood.

As the information in the question, the RN must stop the infusion. Urticaria represents the allergy in the blood plasma protein or the immune cell reaction in the body. The infusion is prevented as this might cause the destruction of immune cells in the body.

Thus, the answer is stop the infusion.

5 0
3 years ago
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