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makvit [3.9K]
3 years ago
7

Based on figure 19-4, what is the student probably trying to test?

Biology
1 answer:
Masteriza [31]3 years ago
3 0
The student is trying to see which substance (disinfectant 1, 2, 3, or the distilled water) can disinfect the most.
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Although allergic reactions are triggered by allergens like pollen and fungi, the actual cause of the symptoms like mucous produ
galina1969 [7]
Although allergic reactions are triggered by allergens like pollen and fungi, the actual cause of the symptoms like mucous production and constricted airways is A) the body's immune response. B) the effect of medical treatment. C) the surrounding weather conditions. D) the clogging effect of the allergens. <span>Although allergic reactions are triggered by allergens like pollen and fungi, the actual cause of the symptoms like mucous production and constricted airways is
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7 0
3 years ago
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What kind of fossil would a gastropoda shell must likely be?
DiKsa [7]
You didn't give any answer choices (i'm answering this through research and what i already know)

the first is fossilized dung, and that's not generally gastropod shells. A carbon film would be something thin, seeing as it's a film, and gastropods aren't that. A gastrolith is a stone swallowed by an animal to help with digestion, and that's also not a gastropod. 

<span>Gastropod fossils may be molds, but usually aren't. Still, they can be. It's a better answer than; film or stomach stones.</span>
8 0
3 years ago
Now that you have come up with an equation that describes the relationship between amounts of different nucleotide bases in DNA,
Colt1911 [192]

Answer:

G=21 %

T= 29 %

A= 29 %

Explanation:

Since C only binds to G, you have the same amount of C and G, so G is 21 %.

100 % minus 42 % ( 21 % C plus 21 % G=) equals 58 %.

So the other 58 % is made of T and A. Since T only binds to A , the half of the extra 58 % is T and the other half is A. Therefore 29 % is T and 29 % is A

4 0
3 years ago
Explain why there is a limited number of organisms in a food chain
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There are different trophic levels at each stage. Trophic levels determine the amount of energy at each stage of the food chain. For example, the energy is 100% at the producer (plant), so it's the 1st trophic level, and so on. Energy amounts decrease as you go up a food chain, and you rarely find more than 5 animals in one because there is not enough energy left for the 6th consumer
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3 years ago
the DNA sequence reads ACGTTCATT before a mutation occurs. after the mutation, the DNA sequence reads ATCGTTCATT. which type of
11Alexandr11 [23.1K]
Addition, you added an extra T between the first A and C
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3 years ago
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