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valentinak56 [21]
3 years ago
11

A population of yeast grows in a test tube under ideal conditions until it runs out of space in the test tube. which kind of cur

ve would accurately show the changes in this population.
A. a survivorship curve

B. an s-curve

C. a life span curve

d. A j-curve
Biology
2 answers:
Anastaziya [24]3 years ago
7 0

An S-curve

Explanation:APEX

MAVERICK [17]3 years ago
3 0

J-shape curve

J-shape curve is a curve that shows the population density of an organisms as they increase rapidly in a logarithmic or exponential form but abruptly stops due to environmental resistance. Thus, the population rate is largely determined by the biotic potentials and size of the population. However, exponential growth produces J-shaped curve.


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Enter the sequence of the DNA coding strand with a 5-3 polarity. DO NOT WRITE 5 OR 3 OR 5' OR 3' IN THE BOX!
Charra [1.4K]

Complete question:

Use the sequence below to answer the following questions  

3’-ACGGATCCTCCCTAGTGCGTAATACG-5’  

5’-TGCCTAGGAGGGATCACGCATTATGC-3’  

1. Enter the sequence of the coding strand with a 5’-3’ polarity

Answer:

coding strand → 5´- GCATAATGCGTGATCCCTAGGCA -3´

Explanation:

When referring to the <u>coding strand</u>, we are talking about the sequence that turns to be the same as the mRNA that results from the transcription of the same DNI segment -switching bases T for U-.  

The coding strand receives that name because it is the sequence that codes for each amino acid composing the proteins.

When the DNI molecule separates into two strands to form the transcription bubble, we can identify two separate segments: coding strand and template strand.  

The coding strand goes in direction 5´ to 3´, while the complementary strand -template strand- grows in direction 3´ to 5´.  

Whenever we have a DNI molecule and we need to determine which strand is the coding one, we just need to look for the presence/absence of start or stop codons.

So, in the exposed example we have two strands, but we do not know yet which one is the coding one.

Conventionally, the first strand is always the coding one. However, let us analyze it by using the presence/absence of codons.

First-strand:

3’-ACGGATCCTCCCTAGTGCGTAATACG-5’

let us write it is 5´to 3´direction

5´- GCATAATGCGTGATCCCTAGGCA -3´

now let us identify the start and stop codons in 5´⇒3´direction.

  • Start codon ⇒ ATG
  • Stop codon ⇒ TAA, TAG, TGA

5´- GCATA<u>ATG</u>CGTGATCCCTAGGCA -3´ ⇒ 1 start codon at the beginning

5´- GCA<u>TAA</u>TGCG<u>TGA</u>TCCC<u>TAG</u>GCA -3´ ⇒ 3 Stop codons

Second strand: We will do exactly the same procedure

5’-TGCCTAGGAGGGATCACGCATT<u>ATG</u>C-3’⇒ 1 start codon near the end

5’-TGCC<u>TAG</u>GAGGGATCACGCATTATGC-3’⇒ 1 stop codon at the beginning

What we did here was to identify in both provided strands, where the start and stop codons are placed. We can see that in the first strand we have the start codon near the beginning, while in the second strand we have it near the end of the sequence. From this information, we can assume that the first strand is the coding one. <em>However, you need to know that some coding sequences do not have start and stop sequences, because they might correspond to a sequence in the middle of a gene.</em>

So, the sequence of the DNA coding strand with a 5-3 polarity is

5´- GCATAATGCGTGATCCCTAGGCA -3´

8 0
3 years ago
Based on the information presented in the passage, which of the following conclusions can the reader make?
Oxana [17]

Answer:

B . Knowing the climate makes it easy to predict the weather.

C . If it is cold today, you almost certainly live in a cold climate.

D . Weather can change quickly, but climate changes slowly.

Explanation:

If we know the climate of a particular region we can predict the weather of the next day or week of that region because climate is remain the same of a specific region. If the weather is cold it means that you live in a cold climate, similarly, if the weather is warm it means the climate of that region is warm and hot. Weather can change and has high variations whereas climate is the average atmospheric conditions of a region for a long period of time.

6 0
3 years ago
Most species of fish require dissolved oxygen for their metabolism. Why would these species tent to be found in shallow ocean zo
Lana71 [14]
There is less pressure or less hotter
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Since neither pink or blue is dominant over the other, and some plums are purple, what type of inheritance pattern does this dis
babymother [125]
There aquired fruits
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You've just read a research project titled: "Prolonged cell phone use causes brain tumors."
kvasek [131]

Answer:

<em>The correct option is B) number of patients with brain tumors</em>

Explanation:

In a scientific experiment, an independent variable is a variable which is being changed by the scientist or changes naturally. The effect of the independent variable is studied on another variable which is termed as the dependent variable. Hence, the dependent variable can be described as the variable which is under study in a scientific experiment.

In the following scenario, as the effect of prolonged cell phones is being tested on causing brain tumors hence, the number of patients with brain tumors will be the dependent variable.

4 0
3 years ago
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