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svet-max [94.6K]
2 years ago
5

On a field trip, a student in a marine biology class collects an organism that has differentiated organs, cell walls of cellulos

e, and chloroplasts with chlorophyll a. Based on this description, the organism could be a brown alga, a red alga, a green alga, a charophyte recently washed into the ocean from a freshwater or brackish water source, or a land plant washed into the ocean. The presence of which of the following features would definitively identify this organism as a land plant?A) alternation of generationsB) sporopolleninC) rosette cellulose-synthesizing complexesD) flagellated spermE) embryos
Biology
1 answer:
GenaCL600 [577]2 years ago
4 0

Answer:

The answwer is letter E.

Explanation:

Embryos.  Because land plants evolved from aquatic green algae. The transition was easy because of the amount of traits  that allowed the survival of the specie. One of these traits was the embryo, which is so essential that every land plants are known as embryophytes.

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Celine feels that the form of marketing their company is using​ isn't working anymore. Merle disagrees vehemently. Those in the
Olin [163]

Answer:

B. Traditional view

Explanation:

the traditional view is that nothing positive results from a conflict

4 0
2 years ago
A student placed a semipermeable membrane inside a U-shaped channel with two chambers, as shown. The
yanalaym [24]

Answer:

Placing salty water in  A and distilled water in  B.

Explanation:

The fastest net rate of water movement into the A-side will occur if we place salty water on that side and distilled water in the other one. The reason for this is that the A-side contains a higher concentration of solute than B. So, the water will pass the semipermeable membrane and go to the A-side to valance the concentrations on both sides. As we can see, there is an increase in the net rate of water movement into A.

5 0
2 years ago
A strand of DNA contains the bases adenine, cytosine, cytosine, and guanine, in that order. Which would be the order
Gekata [30.6K]

Answer:

If a strand of DNA contains the bases adenine, cytosine, cytosine and guanine the order  of the bases on the opposite strand is thymine, guanine, guanine and cytosine.

Explanation:

DNA contains a double strand, each of which contains a specific sequence of bases —adenine, thymine, cytosine and guanine— whose order determines the genetic information stored in this nucleic acid.

The sequence of bases on one DNA strand is complementary on the other strand, taking into account the complementarity of bases, i.e. the purines adenine and guanine are complemented by the pyrimidines thymine and cytosine, respectively:  

A = T

G ≡ C

<u>So that the sequence A - C - C - G of one chain is complemented by the sequence T - G - G - C of the other</u>.

<em>     Taking into account the above information, the other options can be discarded, as they do not comply with the complementarity of bases in the DNA.</em>

7 0
2 years ago
Read 2 more answers
6. Delete any base (between the READING FRAME, excluding the start and stop codons) and show the change in the amino acid sequen
kati45 [8]
This is the DNA. I'm going to only use the upper strand to demonstrate what this strand would code for before and after a single bp deletion (so write it as mRNA). I will also write it how it's easier to see this which is to split them up into the 3 base codon system. Note that you don't need to know the amino acid code - you use a table to find these.

ORIGINAL (mRNA on top, Amino Acid (AA) on bottom:

5'-AGC GGG AUG AGC GCA UGU GGC GCA UAA CUG-3'
    SER  GLY  MET SER ALA  CYS GLY ALA  STOP LEU 

Note that the protein would stop being made at the stop codon and the LEU wouldn't matter at the end...

Now, I will remove one bp...(I bolded it up top). Rewrite the mRNA and find the corresponding AA...

NEW
5'-AGC GGG AUG GCG CAU GTG GCG CAU AAC UG-3'
   SER  GLY  MET  ALA  HIS   VAL  ALA   HIS  ASN .....

Completely different amino acid sequence after the methionine (MET). The stop codon is gone...the protein would continue being translated until it reaches another stop codon...so not what was supposed to be made! 
5 0
2 years ago
Boris reads about a new scientific theory in the newspaper. Since it is unfamiliar, he does not believe the theory. This is an e
Dmitry_Shevchenko [17]

confirmation bias?

i think that may be correct but i'm not 100% positive i hope it helps a little. Good Luck

6 0
1 year ago
Read 2 more answers
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