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Lemur [1.5K]
3 years ago
13

Life as we know it depends on the genetic code: a set of codons, each made up of three bases in a DNA sequence and corresponding

mRNA sequence, that specifies which of the 20 amino acids will be added to the protein during translation. Imagine that a prokaryote-like organism has been discovered in the polar ice on Mars. Interestingly, these Martian organisms use the same DNA → RNA → protein system as life on Earth, except that there are only 2 bases (A and T) in the Martian DNA, and there are only 17 amino acids found in Martian proteins. Based on this information, what is the minimum size of a codon for these hypothetical Martian life-forms? View Available Hint(s) Based on this information, what is the minimum size of a codon for these hypothetical Martian life-forms? 2 bases 3 bases 4 bases 5 bases 6 bases The answer cannot be determined from the information provided.
Biology
2 answers:
AlekseyPX3 years ago
5 0

Answer:

5

Explanation:

life as we know it awncer

-BARSIC- [3]3 years ago
3 0

Answer:

5 bases

Explanation:

If there are 17 amino acids and only 2 bases that can be combined in order to make a codon then:

for 4 bases 4^{2} is 16 and it is not enough combination for all 17 amino acids

for 5 bases 5^{2} is 25 combinations (meaning that more than one codon could code for the same amino acid).

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Examine the statement. A scientific theory can become a scientific law, but a scientific law cannot become a scientific theory.
Elena L [17]

Answer:

1.) True

Explanation:

A scientific theory can become a scientific law, but a scientific law cannot become a scientific theory.

A scientific theory is what is made to scientific law after many trials to prove the scientific theory is true. But after they changed a scientific theory to scientific law, it can't be changed back because it has been disproved many years later.

Hope it helps.

7 0
3 years ago
Use the models that you created in Lesson 2, Lab 1 to help you answer the following question.
masha68 [24]
The answer is <span>B. A smaller cell has more surface area than volume.

</span>This is simple mathematics. Let's imagine that cell is spherical.
Now, we have two spheres: one big (with radius r = 5 cm) and one small (with radius r = 2 cm).
The formula for the surface area of the sphere (A) is A = 4 π r².
The formula for the volume of the square is 4/3 π r³.

Now, let's compare two spheres:

Small sphere:                                                  Big sphere:
r = 2 cm                                                            r = 5 cm
A = 4 π 2² = 50.3 cm²                                      A = 4 π 5² = 314.2 cm²<span>
V = 4/3 </span>π 2³ = 33.5 cm³                                   V = 4/3 π 5 ³ = <span>523.6 cm³ 

According to the calculation, the smaller sphere will have more surface area than volume. This can be extrapolated to all shapes, not only spheres, so the </span><span>smaller cell has more surface area than volume.</span>
3 0
3 years ago
What best provides optimum conditions for cacti? Alpine meadow, grassland, salt marsh, or the dessert?
labwork [276]

Answer: most likely the desert

Explanation: that’s where they are usually found

6 0
3 years ago
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levacccp [35]

Answer:

a. All of these statements are true

Explanation:

The fovea is a region of the retina that’s densely packed with cones, a type of photoreceptor (a cell that detects light). The other type of photoreceptor is the rod.  

While <u>rods function at low light levels</u> and allow night vision, they can’t distinguish color. In contrast, <u>cones function at high light levels and provide color vision</u>.  

That's why you can't perfectly distinguish colors in a dark place.

7 0
3 years ago
The Punnett square is a diagram that is used to predict an outcome of a particular cross or breeding experiment. * True False
Oxana [17]

True B) African-Americans fought for both the British and American sides during the Revolutionary War. Both sides offered them freedom or money for fighting.

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3 years ago
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