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lawyer [7]
3 years ago
13

How is it possible to have thousands of different proteins when there are only 20 different amino acids

Biology
1 answer:
My name is Ann [436]3 years ago
6 0
The 21 amino acids can be arranged in many different ways. It is possible with just this small number of amino acids to create thousands of different types of proteins. Think of amino acids like they were little connecting blocks, such as legos. You have 21 of them before you. How many different ways can you arrange them? The formation of protein is similar. 
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Select all of the answers that apply.
Paraphin [41]
The four laws or principles that are involved with the study of Stratigraphy are the following:
1. Principle of original horizontality
2. Law of superposition
3. Law of crosscutting relationships
4. Principle of Lateral Continuity
5. Principle of Faunal Succession 
6. The Law of inclusions
Therefore, the correct answers would be 1, 2 and 4. Hope this answer helps.
3 0
3 years ago
How are the autotrophic protists different from the heterotrophic protists?
zavuch27 [327]
I think the correct answer from the choices listed above is option A. Autotrophic protists are different from the heterotrophic protists in a sense that t<span>he autotrophic protists can photosynthesize, while the heterotrophic protists cannot. Hope this answers the question.</span>
5 0
3 years ago
Read 2 more answers
What facilitates passive transport across a cell membrane
maw [93]

The answer is concentration gradient. Have a good day.

5 0
3 years ago
Which Punnet square represents a cross between two parents that are heterozygous for purple flowers
navik [9.2K]

Answer:

Punnett square is a square diagram which is used to predict the genotype of the offspring produced by particular cross.

Let P and p be the alleles of the gene responsible for the flower colors in a plant.

The genotype of both the parents is given as heterozygous that is, Pp.

Two types of gametes would be formed P and p.

The cross is shown in the image below.

The cross would be result in offspring with three types of genotypes PP, Pp and pp in 1:2:1.


8 0
3 years ago
Read 2 more answers
State the differences in compositionof blood between the aorta and main vein
Ad libitum [116K]

Answer:

The placenta is a unique vascular organ that receives blood supplies from both the maternal and the fetal systems and thus has two separate circulatory systems for blood: (1) the maternal-placental (uteroplacental) blood circulation, and (2) the fetal-placental (fetoplacental) blood circulation. The uteroplacental circulation starts with the maternal blood flow into the intervillous space through decidual spiral arteries. Exchange of oxygen and nutrients take place as the maternal blood flows around terminal villi in the intervillous space. The in-flowing maternal arterial blood pushes deoxygenated blood into the endometrial and then uterine veins back to the maternal circulation. The fetal-placental circulation allows the umbilical arteries

Explanation:

3 0
2 years ago
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