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Delvig [45]
3 years ago
5

During osmosis, water molecules move across the cell membrane.

Biology
1 answer:
Ivanshal [37]3 years ago
5 0
True tehehehehehehhee
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Stimulation of ________ receptors in the uterus causes uterine relaxation and suppression of the preterm labor.
Tpy6a [65]
Hey there!

I believe answer is B2 or Beta 2
8 0
3 years ago
What kind of weather does a stationary front bring?
hoa [83]
Stationary fronts occur when warm and cold air meet. This brings cloudy, and wet weather. So your answer would be C.
6 0
3 years ago
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Which of the following lists steps of mRNA production in eukaryotes in the correct order?A) 5' cap addition, addition of poly-A
Assoli18 [71]

Answer:

The correct answer is B) Transcription, 5' cap addition, addition of poly-A tail, exon splicing, passage through nuclear membrane.

Explanation:

The transcription process in eukaryotes takes place in the nucleus of the cell and after transcription post-transcriptional modification also takes place in the nucleus which is necessary to guide the mRNA out of the nucleus.

First, the process of transcription takes place in which DNA is transcribed to mRNA by an enzyme called RNA polymerase. After transcription post-transcriptional modifications takes place in the given order.

1. Capping: In capping process 7-methylguanosine is added by capping enzyme at 5' end of mRNA.

2. Polyadenylation: In polyadenylation, many poly-A residues are added at the 3' end of the mRNA called the poly-A tail.

3. Intron splicing: Introns are the non-coding sequence present in mRNA which are spliced out of mRNA and all exons are joined together.

After these post-transcriptional process, the mature mRNA is transported out of the nucleus through the nuclear membrane.

5 0
3 years ago
In your opinion<br> when you exercise vigorously, what is needed more: food or oxygen? Why?
GuDViN [60]

Answer:

oxygen because

Explanation:

because u  can survive 3 days with out it  and if u did not have oxygen u would suffocate

7 0
3 years ago
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A newly discovered species of dung beetle has 2n = 16 chromosomes. It mates with a closely related beetle species that has 2n =
Kamila [148]

Answer:

Option 3, 20 or 22

Explanation:

A newly discovered species of dung beetle has 2n = 16 chromosomes. It mates with a closely related beetle species that has 2n = 12 chromosomes. How many chromosomes would there be in an allotriploid beetle produced from this cross?  

  1. 40 or 44
  2. 20 or 22
  3. 20 or 22
  4. 36 or 48
  5. 40 or 44

Solution

An allotriploid is a species which contains  three sets of chromosomes of different species .Crossing can result in triploid offspring with diploid gamete of one species and regular haploid gamete of other offspring  

Case I - Resulting offspring (3n) = Gamete I (2n) + Gamete II (n)  

OR

Case II - Resulting offspring (3n) = Gamete II (2n) + Gamete I (n)  

Case I  

2* 8 + 6 \\= 16 + 6 \\= 22

Case II

2* 6 + 8\\= 12 + 8\\= 20

Hence, option 3 is correct

3 0
3 years ago
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