1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
avanturin [10]
3 years ago
9

Which charterstic makes the nine amino acids essential

Biology
1 answer:
Andreas93 [3]3 years ago
7 0
The essential amino acids cannot be produced in the human body and hence these amino acids have to be obtained through the diet. Hence these amino acids have this characteristic that these cannot be produced in the human body and have to be obtained through diet this makes them essential. Hence those nine amino acids are considered as the essential amino acids.
You might be interested in
Which element would enable a geologist to determine the absolute age of the rock?
Stells [14]

Explanation:

i think the answer is iron

4 0
3 years ago
Read 2 more answers
List a few of the ways that Thuret tells us we can control neurogenesis. Specify whether the activity increases or decreases neu
Rus_ich [418]
Learning will increase, stress will decrease, sleep deprivation will decrease, sex will increase, getting older will decrease, and running will definitely increase.
7 0
2 years ago
Read 2 more answers
6. Which of these BEST describes our current understanding about how species evolve over time?
trapecia [35]
Hello!

6)
D. Populations evolve as natural selection results in a change in the frequency of alleles within the population over time.

Our current understanding about how species evolve is natural selection produces adaptations vital to the survival of organisms. 

7)
B. The relative frequency of the mutation will increase as time passes.

The information provided makes it clear that the mutation is an advantageous mutation; according to the theory of natural selection, since the mutation is beneficial to the bacteria, those with the mutation will survive and reproduce more, passing on the mutation. This way, the frequency of the mutation will increase.
7 0
3 years ago
Read 2 more answers
1) How is DNA condensed to form a chromosome?
Bumek [7]

Answer:

1) DNA is wrapped around histone proteins to form chromatin

2) The genes are the functional units, the segments between them are used for regulation

3) The genetic code is the language used, gene expression is how the cell uses the information, the activity of the genes.

Explanation:

1) DNA forms a DNA/protein complex called chromatin. It does this by wrapping around histone proteins. These histone proteins are usually present in the form of a nucleosome, which is a unit containing 2 copies of 4 histones (H2A, H2B, H3 and H4). The chromatin fibre at its most compact forms tightly coiled structures called chromosomes. These structures are only present during cell division. When the cell is in interphase (i.e. not dividing), the chromatin is not as tightly condensed, and instead the chromatin is more relaxed to allow the genes within to be expressed.

2) Genes are the functional units that the cell uses to make RNA and protein. The genes are first transcribed into RNA, which is processed and then translated into a polypeptide chain, which forms a complete protein that performs activities in the cell/tissue/organism. However, the whole genome does not form genes, there are regions that do not correspond to a gene. These regions are called "non-coding DNA" or sometimes even "junk DNA". However, that does not mean that these regions do not have important roles. The role of this DNA is usually in regulating the activity of the nearby genes. This DNA might contain important regulatory sequences such as promoters/enhancers/silencers that control how the gene is used by the cell, by for example, recruiting transcription factors or silencing proteins.

3) The genetic code is the language used by the cell. It explains how the cell can transcribe the information in the DNA, to RNA, process the RNA, and then translate the RNA into a polypeptide, and eventually a mature protein. In contrast, gene expression represents how the cell actually uses this information. Not all the genes are transcribed at the same time, instead, the activity of genes is carefully controlled to produce appropriate gene expression patterns, allowing the cell to properly perform its functions. Gene expression is hugely different between cells in an organism, for example the gene expression patterns of a muscle cell will  be hugely different to that of a blood cell.

5 0
3 years ago
Maribel places her backpack and lunch bag on a lab table where there are lab materials. What is the safest way for Maribel to ar
Veronika [31]

Answer:

she should arrange them away from lab materials. She could put them to the side or under the table

Explanation:

3 0
3 years ago
Other questions:
  • What are two main phases of the cell cycle
    6·2 answers
  • BRAINLEST
    5·2 answers
  • The nurse is obtaining a health history from a patient and determines that the patient has had an unintentional weight loss alon
    8·1 answer
  • Describe polygenic inheritance and give an example.
    5·1 answer
  • A bite from an undomesticated animal may require a rabies shot<br> a. True<br> b. False
    9·2 answers
  • The orbital path of the Earth around the Sun and the orbital path of the Moon around the Earth are shown in the diagram.
    9·1 answer
  • The major structural elements of the cytoskeleton are:_______.
    9·1 answer
  • Please help me <br> please help<br> help
    14·1 answer
  • what do you think the rock in Earth’s mantle is like? Is the mantle made of hard, solid rock or soft, solid rock? Explain your i
    14·1 answer
  • A farmer wants to breed a variety of taller corn.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!