What is the main function of the small intestine?(use terms : villi, surface area,blood capillaries,why must large molecules be broken down, high concentration and low concentration.)
Answer:
Among the principal functions of the small intestine, we might mention the peristaltic movement, secretion through special glandules, digestive function, absorptive functions, secretion functions, and endocrine functions.
Explanation:
The whole digestive tube is approximately eleven meters long, from the mouth to the anus.
The small or thin intestine is the longest organ of the digestive tube. It can reach up to 7 meters long, up to 3 centimeters in diameter, and it characterizes by being folded. These folds are called villi, they project into the intestine light, and they are more concentrated in the first portion of the intestine, the duodene, decreasing to the final region of the organ.
Among the principal functions of the small intestine, we might mention the peristaltic movement, secretion through special glandules, digestive function, absorptive functions, secretion functions, and endocrine functions.
The small intestine receives food from the stomach, and through peristaltic movements, it mixes and carries the material to different regions in the organ. The complex polymeric molecules are digested and transformed into simpler substances. The duodene receives secretions from intestinal glands such as bile and pancreatic juices and mixes them with digestive juices of its production. All of these secretions carry huge amounts of enzymes that will degrade food and transform it into soluble substances, such as amino acids. The intestine walls are covered by villi that increase the absorption surface area. Nutrients are absorbed by primary cells and transported to the bloodstream. Calciform cells secrete mucus to protect the epithelium during digestion. Villi also transport water from the blood to the intestinal tract, which helps in food decomposition. Enteroendocrine cells secrete hormones to the blood vessels and capillaries that enter each villus. When nutrients are small enough they go to enter the bloodstream.
Peyer's patches are nodules or cumulus of lymphatic tissue and other accessory cells, located under the mucosa of the gastrointestinal tract, specifically in the lamina propria of the thin intestine, in the jejunum region. These patches represent the mucosa´s immunity system. In the jejunum, these follicles are isolated from each other in the intestine and low concentrated. But in the terminal ileum (The last portion of the thin intestine) they get so close that they might form a plaque.
Identifying Passive and Active Transport
Fill in the blanks with the correct words.
The movement of molecules from an area of low concentration to an area of high concentration occurs in
transport
In
transport
, molecules move from an area of high concentration to an area of low concentration
Answer:
osmosis and diffusion respectively
Explanation:
osmosis is the first one and diffusion is the second one
SOMEONE I NEED HELP!! I'M STUCK 30 POINTS!!!!!
PART A
An advantage of mitosis is the result of genetically____________.
A. Different
B.Identical
PART B
cells being reproduced
A. slowly
B. Quickly
Which is the region of actively dividing
cells at the tip of the stem?
Answer:apical meristem
Explanation:
Why does water have "surface tension"?
Answer:
Hello!
Explanation:
Surface tension in water owes to the fact that water molecules attract one another, as each molecule forms a bond with the ones in its vicinity. ... This inward net force causes the molecules on the surface to contract and to resist being stretched or broken. Hope this helps!
Fill in the information missing in the table to the right by selecting the appropriate answer from the drop-down menu.
A
B
C
D
E
Macromolecules
Answer:
c
Explanation:
Answer:
A- Provide energy
B- Store energy
C- enable movment
D- starches
E- DNA
Explanation:
Your welcome finish your work now.
Which statement is NOT true about fluids?
A. all can flow
B. liquid and gases are included
C. some take the shape of their container
D.particles move easily past each other
Answer:
option D is correct
Explanation:
The statement which is not true about fluids is particles move easily past each other.
What do you mean by Fluids?Fluids may be defined as any liquid or gas or generally any material that experiences a continuous change in shape when subjected to any object.
The properties of fluids indicate that all fluids can flow depending upon their densities. Some take the shape of their container due to fluidity. Fluids comprise liquid and gases.
Therefore, the statement which is not true about fluids is particles move easily past each other.
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which of the following correctly describes a reaction that forms a disaccharide from two monosaccharides?
Answer Options:
a. glycogen + fructose = maltose
b. galactose + glucose = lactose
c. glucose + sucrose = fructose
d. maltose + lactose = cellulose
Answer:
b. galactose + glucose = lactose
Explanation:
Monosaccharides are single units. Disaccharides are molecules of two monosaccharides joined together.
Examples of monosaccharides include glucose, fructose, and galactose.
Examples of disaccharides include lactose, maltose, and sucrose.
The only example that shows this is b.
Which of the following best defines a gene pool?
a. the sum of all genetic traits in a population’s individuals at a given time
b. any movement of genes from one population to another
c. any movement of organisms from one environment to another
d. the random change in the frequency of an allele in a population
The correct answer is : A) The sum of all genetic traits in a population's individuals at a given time.
Answer:
A
Explanation:
Just took the test
What is the purpose of transcription and translation?
What would be the amino acid sequence for the mRNA strand AGGCAGUUG?
Answer:
please tell me if my answer is not helpful
Explanation:
Finish mRNA depletion & library generation in under 6.5 hours. Compatible with Illumina NGS systems. Request a sample. Higher success rates. Easier protocol. Includes cleanup beads. Includes adaptors. Feedback at each step. Lot to lot consistency.
please tell me if my answer is not helpful
is it true that uranus was knocked over by a collision with a planet sized object
Answer:
It turns out that Uranus is so weird because of a massive collision billions of years ago. A new study confirms that this collision with a huge object which was approximately twice the size of Earth.
Explanation:
I don't understand this. Can someone help me?
Answer:
I just got points for being useless
Explanation:
LOL
How do airplanes stay in the air?
Answer:A plane's engines are designed to move it forward at high speed. That makes air flow rapidly over the wings, which throw the air down toward the ground, generating an upward force called lift that overcomes the plane's weight and holds it in the sky. ... The wings force the air downward and that pushes the plane upward.
Explanation:
A plane's engines are designed to move it forward at high speed. That makes air flow rapidly over the wings, which throw the air down toward the ground, generating an upward force called lift that overcomes the plane's weight and holds it in the sky. ... The wings force the air downward and that pushes the plane upward
If a strand of DNA has 45% A, what percent will be C?
Answer:
55%
Explanation:
Answer:
[tex]\boxed {\boxed {\sf C=5\%}}[/tex]
Explanation:
There is a method to calculating base percentages known as Chargaff's Rule. It states:
[tex]A+T+G+C=100\%[/tex]
We know the DNA has 45% Adenine or A.
Adenine always pairs equally with Thymine. In other words, the percentage of adenine equals the percentage of thymine (45% Thymine or T).
[tex]45\%+45\%+C+G=100\%[/tex]
[tex]90\%+C+G=100\%[/tex]
Subtract 90% from both sides.
[tex]90\%-90\%+C+G=100\%-90\%[/tex]
[tex]C+G=10\%[/tex]
Cytosine(C) and Guanine(G) pair equally and their percentages will be equal. We can divide 10% by 2.
[tex]C+G=10\% /2[/tex]
[tex]C/G=5\%[/tex]
The percentage of Cytosine or C is 5 percent.
Choose the correct phrase to describe how the waves behave as they reach point A and B.
Answer:
The answer is Epicenter
Explanation:
Answer:
epicenter is the correct answer
Explanation:
Plz mark brainliest if helps
Which of the different levels of classification is the most specific?
A. species
B. genus
C. domain
D. class
Answer:
A. Species
Explanation:
Species is the most specific level of classification in taxonomy.
One mnemonic that can be used to remember the order of ranks is:
Dear King Philip Came Over For Good Soup
This stands for domain, kingdom, phylum, class, order, family, genus, species.
And, this is in order of the most broad to the most specific rank.
So, A is the correct answer.
Answer:
the Answer is A
Explanation:
because is you look up the classification levels you will see species is the smallest
is the moon considered a planet why or why not
Answer:
The moon is not officially considered a planet because it has many characteristics of a planet. The Earth-moon system is not double a planet. The only last possible selection for our moon is that it is a satellite of Earth.
Explanation:
A mixture in which different materials are easily identified is____
Answer:
heterogenous mixture
Explanation:
in a prokaryotic cell most ribosomes are
Answer:
floating freely in the cytoplasm.
Explanation:
Why do different individuals of the same species have different traits?
OA. Individuals have differences in their genes that result in protein variations.
OB. Individuals have proteins that produce genes with completely different functions from other individuals.
OC. Individuals have different proteins that cause variations among their genes.
OD. Individuals have different genes that produce proteins with completely different functions from other individuals.
answer : a
explanation : a species shares ALMOST all of the DNA with each other with just small differences
Different individuals of the same species have different traits because individuals have differences in their genes that result in protein variation. Hence, option A is correct regarding variation.
Why do individuals of different species exhibit different characteristics?
The species is a group of individuals that can reproduce among themselves and can produce fertile offspring. Individuals of a species have genetic variation among them as they are formed by the process of meiosis.
In meiosis, genes cross over and recombination takes place, resulting in the formation of offspring that show some variation from their parents. These characters or traits are encoded in the gene. When these are expressed in the process of translation, the variation is seen.
This genetic variation doesn't make them reproductively isolated. Example: In humans, there are variations based upon the skin color, face size, height, etc. The variation is seen in genes among individuals but not genes are different.
Hence, different individuals of the same species have different traits because individuals have differences in their genes that result in protein variation. Hence, option A is correct regarding variation.
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What are brown fields
Answer: In urban planning, brownfield land is any previously developed land that is not currently in use that may be potentially contaminated.
Explanation:
What composes a photosystem?
The "special chlorophyll" molecules in the reaction center are what the photosystem will use to absorb all of the sun's energy.
What is a photosystem?A core complex and a periphery antenna system referred to as the light-harvesting complex I (LHCI) for PSI and the light-harvesting complex II (LHCII) for PSII, respectively, make up each photosystem.
Light-harvesting structures and reaction hubs make up photosystems. To two unique chlorophyll molecules in the reaction center, pigments in the light-harvesting complex transfer light energy.
Sunlight is captured in the chloroplast by pigment chlorophyll molecules arranged into photosystems.
Therefore, the light-harvesting complex, which consists of pigments, and the reaction center make up the photosystem.
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what is the full form of ATP?????¿??????????????????
Answer:
The full term is "Adenosine triphosphate".
Explanation:
Where can the following organelle be found:
Vacuole
Answer : it can be found it animals cells and plant cells
(I did the test guys )
Which of the following statements is correct?
Each mRNA carries 1 amino acid
Each mRNA carries 3 amino acids
Each tRNA carries 1 amino acid
Each tRNA carries 3 amino acids
1. What is the density of a block with a mass of 36 g and a volume of 9 cm3?
A. 45 g/cm3
B.27 g/cm3
C.4 g/cm3
D. 0.25 g/cm3
Plsss help
Answer:its 45 g/cm power of 3
Explanation: density of a block with a mass of 36 g and a volume of 9 cm3? A. 45 g/cm3
why the answer is C not D?
Answer:
Diffusion describes the movement of particles from an area of higher to lower concentration. That is what the ink is doing when it spreads throughout the jelly. Osmosis only occurs across a semipermeable membrane.
Answer:
osmosis is movement of particles through a semipermeable membrane from the region of high concentration to region of low concentration while diffusion is the movement of particles from a region of higher concentration to a region of lower concentration.
Explanation:
here there is no semipermeable membrane hence the correct answer is diffusion.
What is the differnce between mitosis and cytoknesis
Answer:
Mitosis is the process in which the nucleus of a eukaryotic cell divides. Cytokinesis is the final stage of cell division, during which the cytoplasm splits into two and two daughter cells form.
Explanation:
hope this helps ya :)
Answer:
the one answered above is true
Which statement best describes what happens during translation?
Answer:
B
Explanation:
The entire process is called gene expression. In translation, messenger RNA (mRNA) is decoded in a ribosome, outside the nucleus, to produce a specific amino acid chain, or polypeptide. The polypeptide later folds into an active protein and performs its functions in the cell.
During translation, the ribosome reads the mRNA and uses the information to assemble a protein.
Translation is the second step of protein synthesis. It takes place in the ribosome, a complex structure made up of proteins and RNA. The ribosome reads the mRNA, a molecule that contains the genetic information for a protein. The mRNA is translated into a protein by a process called codon-anticodon pairing.
Codons are three-base sequences in mRNA that code for specific amino acids. Anticodons are complementary sequences in tRNA molecules that bind to specific codons. When the ribosome encounters a codon in the mRNA, it brings in the corresponding tRNA molecule. The tRNA molecule carries the amino acid that corresponds to the codon.
The amino acid is then added to the growing polypeptide chain. The ribosome continues to move down the mRNA, reading codons and adding amino acids until the entire protein is synthesized.
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