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bixtya [17]
3 years ago
5

What is a tRNA isoacceptor?

Biology
1 answer:
Alla [95]3 years ago
5 0


A tRNA isoacceptor is a member of a group of tRNAs with different anticodons but which accept the same amino acid.

An anticodon is a small region on transfer RNA (tRNA) that comprises of three bases which are complementary to a codon in messenger RNA (mRNA).  A codon is simply a set of three nucleotide bases.

If a codon in mRNA is GGG, the anticodon on tRNA for this will be CCC. The codon GGG is the code that calls for the amino acid called glycine.

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When studying animal behavior, the distribution of organisms within a choice chamber can be studied to identify animal preferenc
Komok [63]

Answer:

c

Explanation:

Random distribution of the Isopods should be 50/50 in A and B.

Chi-square = \frac{(O - E)^2}{E} where O = observed frequency and E = expected frequency

Chamber         O                    E             Chi-square

  A                   18                   10             \frac{(18 - 10)^2}{10} = 6.4

  B                    2                    10             \frac{(2 - 10)^2}{10} = 6.4

<em>Total Chi-square </em>= 6.4 + 6.4 = 12.8

<em>Degree of freedom</em> = 2 - 1 = 1

<em>Tabulated Chi-square</em> (α = 0.05) = 3.8415

The calculated Chi-square exceeds the critical value, hence, it is significant and not due to random.

<em>The correct option is </em><em>c</em><em>.</em>

4 0
3 years ago
Why will many species of bird migrate to warmer climate during the winter
Doss [256]
Bird migrations began with the recession of the glaciers during the ice age. You will notice a great increase in insects in the spring time and early summer.The birds moved North to take advantage of this increase in the food supply that followed the warming in the spring and early summer. Their reproductive organs temporarily developed so they could lay eggs and raise a family. Look at the early flush of Night crawlers in the moist times of the early rains. By mid summer most of the insects have matured, mated and died. Their eggs have hatched and turned to larva and moved underground until next spring. The shortening of the days causes the reproductive functions to decrease and signals the birds that the food will soon become scarce. They move back to the area that makes it the easiest to find food and avoid freezing. which of course is the warmer climates nearer the equator. Not all birds move past the Tropics at approximately 30 degrees. Some like Chickadees may move down from Mi or Mn or Canada only as far south as Indiana. Some migrations may be quite short. For example from the mountains down to the plains. They don't generally reproduce in the warmer winter climes they migrate to. In the spring time they migrate along paths of the retreating glaciers. As the climate warms away from the tropics the birds follow the emerging insects etc to the birds selected breeding grounds.with increased insects and longer days to feed the hatching's. It is necesary to understand why they move to cooler climates in the summer to under stand why they move to eh warmer ones in the fall. As the days shorten the food supply dwindles and the babies have fledged. They move to warmer climates in winter to rest and refuel for the next years migration.
8 0
3 years ago
Which two steps follow after Lysis in the experiment​
Advocard [28]

Explanation:

The cell must be lysed (broken open) to release the nucleus. the nucleus (if present) must also be open to release the DNA. at that point the DNA must be protected from enzymes that will degrade it, causing shearing. [[ once the DNA is released, it must then be precipitated in alcohol...]

8 0
2 years ago
A researcher is interested in the effects of nitrate and phosphate on plant growth and sets up an experiment in which groups of
uysha [10]

Answer:

an independent variable

Explanation:

6 0
2 years ago
Examine the Role of Lipids in Your Body Fat around organs phospholipids​
Sati [7]

Lipids are organic compound that are insoluble in water.

Lipids are derive from and give eg of lipids?

Lipids are derivative of fatty acids the example of lipids are oils, wax and steroids.

Role of lipids are:

1)They fuctions as store house of energy.

2) They are important signalling molecules

3) They serve as structural components of cell membranes.

to learn more about Lipids click here brainly.com/question/9085809

#SPJ9

7 0
2 years ago
Read 2 more answers
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