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Advocard [28]
3 years ago
5

1) If you cross a mussel with dark, zebra-striped shells with a mussel with

Biology
2 answers:
irina1246 [14]3 years ago
8 0
75% is my answer! I hope you get it right!
FromTheMoon [43]3 years ago
5 0
I think it is c sorry if I’m wrong
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How many amino acids are necessary for the human body to function properly?
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Answer:

b, 8-10

Explanation:

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they are histidine, valine, isoleucine, methionine, phenylalanine, threonine, tryptophan, leucine, and lysine

hope this helps! :)

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3 years ago
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The female portion of the flower is the
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Antibiotic resistance in bacteria is the result of
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C. Genetic variation

Bacteria are very numerous,  and random mutation of bacterial DNA generates a wide variety of change, including resistance. It happens through mutation and selection. Not only are they capable of sharing genetic bits of DNA to related and unrealted species they can develop ways to remove the antibiotic before it reaches its intended area via biochemical pumps or enzymes to inactiavte the antibiotic.
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3 years ago
After a signal binds to a signal receptor, the next step is transduction. Why is the signal transduction step necessary ls7c wee
mars1129 [50]

Answer:

Signal transduction is what allows cells to respond to the influences of the environment around them, providing cells with proper growth and normal cell function.

Explanation:

Living organisms have developed a wide variety of complex processes to transmit signals from the outside to the inside to elicit an adequate cellular response. Defects in these molecular pathways can lead to very different disorders, such as diabetes, cancer, and psychotic illnesses. Signal transduction is the process by which a cell converts a certain signal or external stimulus into another signal or specific response, that is, it is the mechanism by which a cell responds to the stimuli it receives from the environment through diffusion. of those signals to its internal compartments. First, a signaling molecule (also called a ligand) needs to activate a specific receptor on the cell's membrane or cytoplasm. Ligand-receptor binding is very specific; they are recognized as a key and a lock. Second messengers are molecules that allow the received signal to be amplified at the intracellular level. The binding of a ligand to the receptor can generate hundreds of second messenger molecules that, in turn, can modify thousands of effector molecules and give rise to different responses. Cells recognize, integrate, and respond to multiple signals from their environment due to signal transduction, providing cells with a normal cell function.

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The digestive, respiratory and circulatory systems are controlled
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D

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