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In-s [12.5K]
3 years ago
8

An American cockroach (Periplaneta americana) can begin to turn away from approaching danger, such as a hungry toad lunging towa

rd it or a flyswatter wielded by a cockroach-loathing human, in as little as a hundredth of a second after the air pushed in front of the moving object reaches the roach’s body. A cockroach has very sensitive wind sensors on its cerci, which are small appendages at the end of its abdomen. One cercus points slightly to the right, the other to the left. Use what you know about moth orientation to bat cries to suggest how this simple system might provide the information the roach needs to turn away from an attacking toad, rather than toward it. How might you test your hypothesis experimentally?
Biology
1 answer:
JulsSmile [24]3 years ago
8 0

Answer:

The roaches antennas

Explanation:

the roaches antennas sense movement from far so the antennas sense when the roach is in danger their for it moves away not towards it.

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Answer:

Pesticide resistance at a population level, as opposed to just a few individual pests within a species, can occur after repeated exposure to a single type of pesticide. ... When a resistant population occurs, the pesticide is no longer useful for managing that specific pest and other management options must be sought out.

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Increasing the substrate concentration in an enzymatic reaction could overcome which of the following?
bixtya [17]

Answer:

(C) Competitive inhibition

Explanation:

When a substrate competes with and inhibitor, what they are actually doing is competing by the active site of the enzyme. In terms of probabilities, when there is much more of one molecule of X than its competitor Y, it is more likely for any of the molecules of X to reach the active site of the enzyme than for any of the molecules of Y.

Then is one would like to reduce the effects of an inhibitor reversible bonded to an enzyme, one possibility is to increase the concentration of a substrate (which in turn means that there will be a higher relative number of its molecules in the media), increasing the probability to meet the active site of the enzyme and as a result displacing the inhibitor (assuming it not increased as well).  

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EMB agar is a medium used in the identification and isolation of pathogenic bacteria. It contains digested meat proteins as a so
Mila [183]

Answer:

a selective medium, a differential medium, and a complex medium

Explanation:

EMB Agar (Eosin Methylene Blue Agar) is both a selective and differential culture medium that slightly inhibits Gram-positive bacteria and can be used to distinguish bacteria capable of fermenting lactose from those that are unable to ferment this disaccharide. This medium is commonly used for isolation and differentiation of coliforms (i.e., bacteria found in the soil and water samples) and fecal coliforms (bacteria found in the gut and feces samples). In EMB agar, lactose-fermenting-gram-negative bacteria (e.g., <em>E. coli</em>) will form colored colonies, while non-lactose-fermenting-gram-negative bacteria will form colorless colonies (e.g., <em>Salmonella</em>). EMB agar is composed of lactose, gelatin, methylene blue dye and eosin Y dye ( a xanthene dye) .

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What determines where on the dna molecule transcription begins and where it ends?
Alja [10]
Hello there,

<span>A "start" and "stop" codon is what determine's where on the DNA transcription begins and where is also end's.

I hope this helps you!

~Jurgen</span>
6 0
3 years ago
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