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Maslowich
3 years ago
14

A group of scientists is studying a protist species.

Biology
1 answer:
Basile [38]3 years ago
5 0

Answer:

Hello, Your answer is B) They will reclassify the species in the phylum Phaeophyta.

Explanation:

The species is currently classified in the phylum Chrysophyta because of its physical characteristics. However, after the scientists analyze the species' DNA, they discover that the DNA is most similar to protists in the phylum Phaeophyta. Since the phylogenetic trees are mostly made on the basis of the similarity of the DNA to the DNAs of the species present in a phylum, the species will get reclassified into the Phaeophyta phylum. <em>Hope That Helps!</em>

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A chemical called ... contains the instructions for life.
yan [13]

Answer:

Deoxyribonucleic acid (DNA)

Explanation:

the biological instructions that make each species unique. DNA, along with the instructions it contains, is passed from adult organisms to their offspring during reproduction

5 0
2 years ago
A forest ecosystem can support a límited number of bears this is because
nlexa [21]

There are only so many resources that can be used and if all of them are used they don't have enough materials or food.

6 0
3 years ago
A tail like structures which allows certain unicellular organisms to move
yaroslaw [1]
The answer is flagella.

Flagella are tail-like structures which allow some unicellular organisms to move. Although their primary function is in locomotion, they can also serve as sensory organelles that are sensitive to chemicals or temperature of the environment. They can be found in all three domains - bacteria, archaea, and eukaryota:
- Bacterial flagella have a rotary motor at the base of each filament turning clockwise or counterclockwise
- Archaeal flagella look like bacterial flagella.
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6 0
3 years ago
I need help, I don't understand this, so please try to explain?
Vinvika [58]

Answer:

Yeah, so basically the image is showing restriction enzymes. The job of restriction enzymes is mainly involved in research when scientists use them for cloning human genes. But that's besides the point...

Main thing you have to understand is that restriction enzymes cut at very specific places along DNA sequences. If you look at the restriction enzyme Rsa 1, you can notice that it cuts only between a thymine nucleotide base and an adenine nucleotide base. Next, if ya look at Sty 1 (be careful b/c W can represent adenine or thymine), it cuts only between two directly adjacent cytosine nucleotide bases!

SO.... if we go to Rsa 1, we can find the answers by dividing up the sequences between the pattern we saw in the gray box. It only cuts between adenine and thymine bases. Based on that, we can find the number of fragments created, and the segment lengths (basically just like how many nucleotide bases are in each strand). Hope ya found this helpful!

3 0
3 years ago
1.) A person walks 12.5 km in 1.9 h. What is the person's<br> average velocity in km/h and m/s?
Artemon [7]

Answer:

1. 6.56 km/hr

2. 1.83 m/s

Explanation:

The average velocity/speed can be calculated using the formula;

Average speed/velocity = distance/time

According to the information provided in the question, distance = 12.5km, time = 1.9h

Average velocity in km/hr = 12.5/1.9

= 6.578

= 6.56km/hr

However, in order to calculate the average speed in m/s, we have to convert distance in km to m, and time in hour to seconds.

1km = 1000m

12.5km = 12.5 × 1000

= 12500m

1 hour = 3600seconds

1.9hours = 1.9 × 3600

= 6840seconds

Average velocity = 12500/6840

= 1.827

= 1.83m/s

7 0
3 years ago
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