Answer:
There are 20 different standard L-α-amino acids used by cells for protein construction. Amino acids, as their name indicates, contain both a basic amino group and an acidic carboxyl group. This difunctionality allows the individual amino acids to join in long chains by forming peptide bonds: amide bonds between the -NH2 of one amino acid and the -COOH of another. Sequences with fewer than 50 amino acids are generally referred to as peptides, while the terms, protein and polypeptide, are used for longer sequences. A protein can be made up of one or more polypeptide molecules. The end of the peptide or protein sequence with a free carboxyl group is called the carboxy-terminus or C-terminus. The terms, amino-terminus and N-terminus, describe the end of the sequence with a free α-amino group.
The amino acids differ in structure by the substituent on their side chains. These side chains confer different chemical, physical, and structural properties to the final peptide or protein. The structures of the 20 amino acids commonly found in proteins are shown in Figure 1. Each amino acid has both a one-letter and three-letter abbreviation. These abbreviations are commonly used to simplify the written sequence of a peptide or protein.
figure1-Protein-Structure
Depending on the side-chain substituent, an amino acid can be classified as being acidic, basic or neutral. Although 20 amino acids are required for synthesis of various proteins found in humans, we can synthesize only ten. The remaining 10 are called essential amino acids and must be obtained in the diet.
The amino acid sequence of a protein is encoded in DNA. Proteins are synthesized by a series of steps called transcription (the use of a DNA strand to make a complimentary messenger RNA strand – mRNA) and translation (the mRNA sequence is used as a template to guide the synthesis of the chain of amino acids which make up the protein). Often, post-translational modifications, such as glycosylation or phosphorylation, occur which are necessary for the biological function of the protein. While the amino acid sequence makes up the primary structure of the protein, the chemical/biological properties of the protein are very much dependent on the three-dimensional or tertiary structure.
A change to the PRIMARY structure WILL HAVE the greatest effect on a protein's function.
The primary structure of a protein refers to the linear sequence of amino acids within a polypeptide chain.A change in the protein primary structure will change protein properties and likely will also alter their functions.The secondary structure of a protein refers to the specific arrangement of groups of amino acids. The most common types of secondary structures in proteins include alpha helix and beta sheets.The tertiary structure refers to the three-dimensional shape of the protein. There are two major main classes of protein tertiary structure: fibrous and globular.The quaternary structure refers to the association of different protein subunits to form a multimeric protein.In conclusion, a change to the PRIMARY structure WILL HAVE the greatest effect on a protein's function.
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What is the key to maintaing water purrification services?
Knowing what you know about how a substance travels in diffusion, in
order for oxygen to leave the alveoli and enter the blood, there would be
concentration of oxygen in the alveoli compared to the
blood. *
A.higher
B.Lower
Answer:
the oxygen should be concentrated in the alveoli
Explanation:
Diffusion: The movement of molecules from a region og higher concentration to a region of lower concentration.
So when the Oxygen is concentrated in the alveoli only then it can move towards the blood
Diffusion is a passive transport system which means it doesnt need energy in the form of atp molecules
if the molecules move from a region of lower concentration to a region of higher concentration it needs atp molecules which is energy and is called active transport system
The answer should be "HIGHER."
Which of the following is the most likely reason the Moon can NOT support life?
А
It has many craters, indicating that it has an atmosphere too weak to protect life
B
It has many craters, indicating that is has a magnetic field too powerful for life.
С
It has many dark spots, indicating volcanic activity too extreme for life.
D
It has many light spots, indicating frozen ice that is too cold for life.
Answer:
A
Explanation:
B is not true because the amount of craters does not indicate how powerful the magnetic field is, it indicates how much gravity there is.
C is not true because the dark spots are igneous rock, dried lava. That means that there WAS volcanic activity, in the past.
D is not true because the light spots on the moon are not ice, they are simply a lighter colored rock.
A is true because meteors will burn up in the atmosphere of planets because of friction, so not all the meteors will hit said planet. But if there isn't an atmosphere, all of the meteors will hit that planet. (or in this case, moon)
can you keep a fly as a pet???
(there is one sitting on my leg and wont move)
its kinda cute not gonna lie
Answer:
yes u can
Explanation:
:3 *aww wonderful pet than*
Which characteristic makes a cell membrane selectively permeable?
the thickness of the membrane
the chemical nature of the membrane
the rigid nature of the membrane
the smooth outside of the membrane
Answer:A selectively permeable cell membrane is one that allows certain molecules or ions to pass through it with active or passive transport.
Explanation:
3. Which tenet of the cell theory is being demonstrated by the graph below?
O Cells are the smallest unit of life
All living things are made of cells
Cells come from existing cells
Cells can never be destroyed
Answer:
Cells comes from existing cells and structures
Part B
Locate the lines of longitude that run from north to south, or vertically, on the map ©. Then answer the following
questions.
Question 1
What is the alternate name for 0° longitude?
Question 1 of 25
An engineer is designing a tire for heavy machinery, Which statement
describes the clearest constraint that applies to the solution?
A. It must be affordable for consumers.
B. It must be designed so that it has an appealing appearance,
C. It must cost the consumer less than $200 per tire.
D. It must function safely under a heavy load,
Which correctly lists the three features of Earth that are the main types of landforms?
A. hills, valleys, and plateaus
B. lakes, valleys, and mountains
C. mountains, plains, and plateaus
D. plains, lakes, and hills
Answer:
c
Explanation:
because it has all the types of features of earth
They even impact which military sites are most effective at defending a given area. Thus, option C is correct.
What different landforms on earth that affect function?The four main types of landforms are mountains, hills, plateaus, and plains. Buttes, canyons, valleys, and basins are examples of minor landforms. Mountains and hills can be pushed upward by tectonic plate movement under the Earth.
The various natural sceneries on the world are produced by landforms. They serve as homes for both animals and people. A place's topography is composed of its landforms.
All people's lives depend heavily on landforms. They have an impact on a region's cultural history, societal development, food production, housing options, and architectural and building choices.
Therefore, because it has all the types of features of earth.
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What is the blending theory of inheritance? Why did Mendel question this theory?
Answer:
Blending Theory of Inheritance
Mendel noticed plants in his own garden that weren't a blend of the parents. For example, a tall plant and a short plant had offspring that were either tall or short but not medium in height. Observations such as these led Mendel to question the blending theory
The blending theory state that the inheritance of traits from two parents produces offspring with characteristics that are combination of the parents.
What is blending theory of inheritance?Blending theory of inheritance stated that, offspring is combination of characteristics of the traits from two parents. Blending inheritance was discarded after the general acceptance of the modern genetics.
Mendel noticed that plant in his garden were not blend of the parents. For example, a tall plant and a short plant had offspring that were either tall or short but not medium in height.
Therefore, Mendel question this theory. He wanted to know if there was different principle that could explain how the characteristics are inherited to the offspring from parents.
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HELP ANSWER NEEDED!! BEFORE 3:00!!
Answer:
1: C
2: B
3: C
4: C
5: B
6: False
7: False
8: True
9: False
10: False
Explanation:
Looked each question up and that’s what i got. hope this helps, good luck!!!!!
What is a small ecosystem in danger of compared to a large and diverse ecosystem?
Answer:
See the answer below
Explanation:
A small ecosystem is in danger when compared to a large and diverse ecosystem because the genetic variability in a small ecosystem is low and a small disruption can wipe out the populations within the ecosystem. This is unlike in a large ecosystem where this is a high genetic variability that gives the populations within the ecosystem resilience against disturbances.
There are enough alleles within the genetic pool of a large and diverse ecosystem to withstand disturbance regimes unlike in small ecosystems where the alleles are few. Hence, a little disturbance can endanger the entire population in a small ecosystem and put them at the risks of extinction.
PLS I need someone to upload a photo of the answer!
Answer:
See the file bellow
Explanation:
Compare and contrast Meiosis and Mitosis, how are they similar and how are they different?
Answer:
Cells divide and reproduce in two ways, mitosis and meiosis. Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells.
Answer:
1. meiosis require two nuclear division but mitosis requires only one nuclear division
2. meiosis produces four daughter divisions, and there are four daughters cell following cytokinesis. Mitosis followed by cytokinesis result in two daughter cells
3. in meiosis, the four daughter cells are haploid and have half the chromosome number as the parent cell. In mitosis, the daughter cell have the same chromosome number as the parent cell
4. in meiosis the daughter are genetically dissimilar to each other and to parent but in mitosis, the daughter cells are genetically identical to each other and to the parent.
Explanation:
Overuse injuries are a common issue many athletes and even everyday people face. I want you to research what an overuse injury is. What is an overuse injury? What causes overuse injuries? What are some symptoms that might be warning us that an overuse injury might occur? Are there any long-term consequences if we ignore these symptoms? How can we prevent it? What are some common overuse injuries? These are some suggestions about what you can research. I want 3 paragraphs due by the end of the day tomorrow.
Define regulating services in your own words
define providing services in your own words
Answer: did this
Explanation:
Q 13. How will you describe the sequence of oxygen, carbon dioxide, anu
flow in your own words?
Answer:
Our body requires oxygen to complete it's all metabolic processes this demand of oxygen is fulfilled by oxygen carrier component present in the blood called Hemoglobin (HB). It binds with the oxygen that reaches from lungs to the heart, deoxygenated blood i.e. the blood that carries carbon dioxide with it, is converted into oxygenated blood and circulated throughout the body.A starch molecule is like a:
Answer:
A reservoir of energy
Answer:
chemical battery and reservoir of energy
Explanation:
What are genetic variations? First answer gets brainliest! Please help
Answer:
Genetic variation refers to differences in the genetic makeup of individuals in a population. Genetic variation is necessary in natural selection. In natural selection, organisms with environmentally selected traits are better able to adapt to the environment and pass on their genes.
Help I don’t get it the last one says negative
Answer:
Negative (Fourth Choice)
Explanation:
According to the question, it says "The flow of electrons is electricity." if the question talks about the electrons, then they are negative, because electrons are negatively charged.
Which of the graphics best represents an animal cell? !!!THIS IS URGENT!!!
Answer:
A
Explanation:
It’s Red
Answer: A
Explanation: Animal cells don't have cell walls like cell B does, so it has to be A.
Which health issue can be caused directly by a mutation resulting in a continuously growing and dividing cell?
why are photosynthetic organisms found only near the surface of the oceanic zone
Answer:
Because they need light, phytoplankton live near the surface, where enough sunlight can penetrate to power photosynthesis.
Explanation:
How might scientific knowledge about monoculture farming affect societal decisions? Please be sure to answer in complete sentences.
Answer:
People could choose to practice organic farming, heirloom plants, or use GMOs.
Governments could pass laws to limit the use of monoculture farming.
Governments could pass laws requiring people to use alternate farming methods
Explanation:
Answer:
People could choose to practice organic farming, heirloom plants, or use GMOs. Governments could pass laws to limit the use of monoculture farming.Governments could pass laws requiring people to use alternate farming methods
Which of the following comparisons is ACCURATE?
Carbohydrates and lipids contain the same elements in different ratios or
proportions.
Lipids and nucleic acids are both built from amino acids.
Proteins are built of nucleic acids and DNA is built of amino acids.
Saturated fats are another name for polysaccharides.
Answer:
4ygfhjvffhjvrjffhdhehr
Answer:
It's the first one. Carbohydrates and lipids contain the same elements in different ratios or proportions.
Is it possible for you to be more related to one grandparent than another?
Answer:
No because you should get half the DNA from your parents meaning you should be related to the grandparents equally
Answer:
The question isn't clear, can you restate it ?
Explanation:
A person is admited into the hospital an unknown ailment. The patient is seen by Triage and immediately put on intravenous liquid or more commonly known as an IV by a brand new nurse
Unfortunately for the patient the nurse did not property prepare the IV and hooked the patient to an IV fluid line consisting only of distilled water.
What will mostly likely occur to this patient’s red blood cells if the IV dispenses its contents in its totality?
A) The environment in the patient’s blood will be isotonic if the cells and their environment have reached equilibrium, cells will remain the same size.
B) The environment inside and outside the patient’s cells will be isotonic and may cause the cells to burst.
C) The environment around the patients cells will be hypotonic and cause the cells to shrink.
D) The environment inside the patient’s cells will be hypertonic and may cause the cells to burst.
Tina-Marie accidentally left her water bottle outside on a freezing, winter night. The next day, the water bottle, which is now filled with ice, ruptured. Based on her observations, Tina-Marie forms a hypothesis about freezing water and volume. Identify a hypothesis Tina-Marie can investigate. Then describe an experimental procedure for investigating the hypothesis.
Answer:
Hypothesis, Ice is less dense then water.
Explanation:
They could test this by attaining the density of ice and water, the density of Water is 1g/ml and if the ice floats that means ice is less then 1 g/ml which means ice is less dense. This is relevant to the water bottle because the Ice expanded due to it being less dense causing the water bottle to rupture
describe 3 ways our body is trying to maintain homeostasis while running
Answer:
Temperature. The body must maintain a relatively constant temperature. ...
Glucose. The body must regulate glucose levels to stay healthy. ...
Toxins. Toxins in the blood can disrupt the body's homeostasis. ...
Blood Pressure. The body must maintain healthy levels of blood pressure. ...
pH.
An independent variable is-
Answer:
A variable (often denoted by x ) whose variation does not depend on that of another.
Explanation:
Which defines a biome as a desert
Answer: A desert is defined simply by the amount of rainfall that falls in an area in conjunction with the amount of evaporation. In essence, it's any area that receives on average less than 10 inches of rainfall per year, and where the yearly evaporation is more than 10 inches of rain a year.