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loris [4]
2 years ago
13

Scientists recently discovered that three different types of squid, a marine animal, previously thought to be three different sp

ecies, were actually all members of one species. Their earlier ideas were based on using squid carcasses (dead bodies). The new, more accepted classification is most probably based on an analysis of
A. a greater number of squid carcasses
B. the feeding habits of the three different species
C. a number of newly found squid fossils
D. the DNA present in the cells of squid
Biology
1 answer:
ivanzaharov [21]2 years ago
7 0

Answer:

D: The DNA present in the cells of the squid.

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For a science fair project, two students decided to repeat the Hershey and Chase experiment, with modifications. They decided to
posledela

Answer:

The correct answer will be option-E

Explanation:

Hershey and Chase's experiment was performed to test whether DNA serves as the genetic material or protein.

To perform experiment they grew bacteriophage into radiolabeled phosphorus and sulfur compounds. The phosphorus is an integral part of the structure of DNA whereas proteins contain sulfur in their structure.  

In the given condition if radiolabeled nitrogen is utilized then the experiment will fail as the structure of proteins also contains an amino group( NH₂) in their structure as well as DNA. The scientist will not be able to identify whether the DNA is the genetic material or protein.

Thus, option-E is the correct answer.

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3 years ago
Camels have adapted to the harsh environment of the desert and can go for days without
masha68 [24]

Answer:

water

Explanation:

that's why they got himps on they back

3 0
2 years ago
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A metamorphie rock can be classified according to its
Sergio [31]

Answer:

A metamorphic rock can be classifies according to its texture and compositions.

Explanation:

3 0
3 years ago
Norman Triplett observed that adolescents wound a fishing reel faster in the presence of someone working simultaneously on the s
slavikrds [6]

Answer:

social facilitation

Explanation:

The concept of social facilitation was first proposed by Norman Triplett. After observing a cycling event, in which he noticed that cyclist performed better when they have others around competing with them, rather than cycling alone just against time. This led him to duct an experiment where he gave some children strings to wound fishing reel. He observed that, children wound the fishing reel faster in the presence of other children performing similar task, when compared to when perform such task alone.

This concept discovered by Norman Triplett, best illustrates the concept of social facilitation, which posits that, individuals tend to perform better in the mere presence of others or when they perform a task with others, than when performing the task alone.

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_____ intake is essential in the prevention of heat related injuries
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Water intake is essential in the prevention of heat related injuries


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