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grigory [225]
3 years ago
12

What is the history of camera??

Biology
1 answer:
Zinaida [17]3 years ago
7 0

Answer:

begins even before the introduction of photography

Explanation:

cameras evolved from the camera obscura though many generations of photographic technology

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Which of the following is a traditional human use of microorganisms? Select one: a. Baking bread b. Treating water and sewage c.
Vladimir79 [104]

Answer:

Baking bread

Explanation:

Over time, microorganisms have been found beneficial in nature. most significantly in the fermentation process of bread baking.  the main micro organism in bread making traditionally is the yeast. Yeast is a microbe, when the yeast feeds on sugar it ferments it and it converts the sugar into carbon dioxide and ethanol. The function of the yeast in bread making is that it causes bread to rise.

3 0
3 years ago
A) Describe the first interaction that triggers signaling to begin in a target cell.
sergey [27]

Answer:

Ligand-receptor interaction is the first interaction that triggers cell signalling.

Ligands are the hormones, drugs or neurotransmitters that specifically bind with receptors present in cell surface to initiate cell signalling. Ligand binding to the receptor is reversible. Binding of the ligand to the receptor can activate or inactivate receptor. Activation may lead to cell signalling pathways. Inside cells, there are secondary molecules which on activation starts a cascade of reactions. which in-turn regulate the function of the ligand molecule.

At first, the activated receptor relates with G proteins molecules in the cell.

before the ultimate physiological effect of the ligand on the cell's behavior is produced Therefore, the cellular signaling starts as soon as the first messenger (the ligand) binds to its receptor.

hope this helps

6 0
3 years ago
HELP!!<br><br> Give an example of heat transfer by convection.
evablogger [386]
<span>How the inside of a greenhouse works.

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<span>Putting your wet shoes on a floor vent to dry them faster


</span><span>Macaroni rising and falling in a pot of boiling water</span>

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7 0
3 years ago
Slow release of bacteriophage progeny from a bacterial host cell A. does not kill the host cell B. is a feature particular to fi
zhenek [66]

Answer:

C. causes cell lysis

Explanation:

The slow release of the bacteriophage progeny from a bacterial host cell causes bacterial cell lysis and further kills the host cell which is the bacteria, this results to the liberation of progeny viruses which then infect new bacterial cells.

Only a type of bacteriophage called the filamentous bacteriophage reproduces without killing the bacterial host cell.  The filamentous phages infect majorly gram negative bacteria.

7 0
3 years ago
Amniocentesis is a process in which amniotic fluid is taken from the mother's womb to identify any genetic abnormalities in the
Zarrin [17]
<span>B)<span>The exact location of a particular disease-causing gene can be determined.

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4 0
3 years ago
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