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omeli [17]
3 years ago
5

Electrical impulses that trigger contraction of cardiac muscle cells in vertebrates originate in the _____.

Biology
1 answer:
Ne4ueva [31]3 years ago
7 0
Pns, nervous system
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The following the DNA sequence is a small part of the coding (nontemplate) strand from the open reading frame of β-hemoglobin ge
sdas [7]

The reading frame of the sequence would shift, causing a change in the amino acid sequence after that point.

Explanation:

DNA sequencing is important to apply to the human genome. It allows scientists to sequence genes and genomes. Since there is a limit to how many bases can be sequenced in one experiment, larger DNA molecules - as mentioned - have to be 'broken' into smaller fragments before they can be sequenced and re assembled. The normal allelic variant is 1600 base pairs (bp) long and contains three exons. The order of the genes in the beta-globin cluster is 5' - epsilon – gamma-G – gamma-A – delta – beta - 3'.

7 0
3 years ago
DNA replication is Group of answer choices conservative. a one-step process. semi-conservative. not carried out by enzymes. not
Alex787 [66]

Answer:

The correct answer is: semi-conservative.

Explanation:

DNA replication is an important process in which the DNA is duplicated before cell division so each daughter cell can have a copy of genetic material.

DNA replication is <u>semi-conservative because one strand of DNA is new and the other one is the old strand</u>. To replicate itself, the DNA double helix is opened, and then each strand serves as a model for the new strands.

DNA replication is <u>not a one-step process</u>, as it takes several complicated steps in which <u>lots on enzymes participate</u> (like DNA polymerase and DNA helicase).

DNA replication is <u>also carried by prokaryotic cells</u>, though it's a much simpler process.

5 0
3 years ago
What organelle packages molecules? A. Centrosomes B. Golgi Apparatus C. Nucleus D. Ribosome
klio [65]
The organelle that packages molecules for transport outside the cell is the Golgi Apparatus. The molecules are packages in transport vesicles inside the Golgi Apparatus.

The solution is C.
8 0
3 years ago
The Hawaiian Islands are a volcanic island arc.<br> True<br><br> False<br><br> Please help
Darya [45]

Answer:

True

Explanation:

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3 years ago
The ________ plate count (SPC) method involves diluting 1.0m of bacterial culture into a series of water blanks, and then taking
Anna11 [10]

The standard plate count (SPC) method involves diluting 1.0m of bacterial culture into a series of water blanks, and then taking a sample from the water blanks to add to empty petri plates which will be filled with melted agar.

The standard plate count is a method used in microbiology, which is used to gain an insight to estimate the density of bacterial population which is present in a bacterial culture broth. This is done by plating a small concentration of the culture in a petri-dish and then counting the colonies which form in the petri-plate. This method is used mostly in the food industry, to find the density of mesophilic bacteria in food. This method is extremely essential to determine the primary source of the bacterial contaminant.

Learn more about standard plate count here-

brainly.com/question/14803589

#SPJ4

3 0
2 years ago
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