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zubka84 [21]
3 years ago
13

Rachel is studying the impact of watching television 30 minutes before bedtime on quality of sleep. Which of the following might

be the best hypothesis for her study?
Biology
1 answer:
rodikova [14]3 years ago
4 0

Answer:

''Watching television adversely impacted the quality of sleep''.

Explanation:

''Watching television adversely impacted the quality of sleep'' is the best hypothesis for her study. Watching television right before bed, can negatively impact your sleep quality. Late-night watching television disrupts your internal clock that adversely affected sleep quality of an individual. The above hypothesis is used by the Rachel to investigate the impact of watching television before sleeping on the sleep quality.

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Suppose the sub-hypothesis that wing waving alone reduces predation by jumping spiders was supported by the Zonosemata experimen
Sliva [168]

Answer:

The correct answer is: <em>Zonosemata flies with housefly wings are attacked less frequently</em>

Explanation:

The Zonosemata experiment is a scientific experiment that was conducted to investigate how zonosemata flies are able to protect themselves from predation by jumping spiders. In this study, housefly wings were transplanted onto zonosemata flies. This made zonosemata flies protected from attack by jumping spiders. On the other hand, when zonosemata wings were transplanted onto houseflies, they were easy targets for jumping spiders. Therefore, if the sub-hypothesis that wing waving alone reduces predation by jumping spiders is proven, the logical result would be that:  Zonosemata flies with housefly wings are attacked less frequently.

4 0
3 years ago
Let’s say A plant cell, normally diploid, completely screws up mitosis during metaphase and pulls full copies of all chromosomes
andrezito [222]

Answer:

4N

Explanation:

Mitosis is the process whereby a cell duplicates or produces another identical copy of itself. The mitotic process, which occurs in four main stages produces two daughter cells that are genetically identical to the parent cell. For example, a diploid organism (2n) will produce two daughter cells with 2n from mitosis.

However, in a case whereby a plant cell (A) screws up mitosis during metaphase and pulls full copies of all chromosomes to one side. This would result in one daughter cell having 4n or tetraploid number of chromosomes. Ideally, mitosis separates the chromosomes equally into the two daughter cells to have 2n each. If one cell has all chromosomes, it means that cell will have all the 4n.

For example, in a diploid human cell with 46 chromosomes (2n). Mitosis should occur in such a way that each daughter cell will have a diploid 46 number of chromosome (2n). However, if all the chromosome ends up in one cell during mitosis, that cell will have 92chromosomes, which is 4n or tetraploidy.

8 0
3 years ago
Plsss helppp meeeeeeeeee
goldenfox [79]
1. Platypus, Brown Bear, Lion, and House Cat.
2. Brown Bear.
3. House Cat.

In this graph you are basically going down the line (or up towards the house cat) looking at the qualities each animal has. So whatever is on the bottom (hair and mammary glands) all animals above it has it. If the quality passes the animal, the animal doesn’t have that quality.
Hopefully this explanation is clearer with the answers.
4 0
3 years ago
Read a quotation by New York Senator William Marcy. To the victor belong the spoils of the enemy. Based on this quotation, Willi
Korvikt [17]

Answer:

a Jackson rivaI

it is because the use of word make it sound as if they are a rival

7 0
2 years ago
Alexander Litvinenko was poisoned with 10 micrograms of the radioactive substance Polonium-210. Since radioactive decay follows
irina [24]

Answer:

Left amount of Polonium-210 after 115 days will be 4.5927 microgram

Explanation:

We have given initial mass of Polonium-210 N_0=10microgram

Decay rate x= 0.502% = 0.00502

Time t = 115 days

We have to find the left amount of Polonium -210 after 115 days

We know that left amount is given by

N=N_0e^{-xt}=10e^{-0.00502\times 115}=4.5927microgram

So left amount of Polonium-210 after 115 days will be 4.5927 microgram

7 0
3 years ago
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