Answer:
1. stanley miller
2. carl sagan
Explanation:
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.
write essay about connective tissue?
please write correct answer
Which cell has the GREATEST surface area to volume ratio?
O Chicken egg
O Skin cell
O Bacterial cell
O Liver cell
The cell with the greatest surface area to volume ratio is the smallest cell, in this case, the bacterial cell.
As a cell increases in size, the proportional increase in volume is higher than that of its surface area. This tells us that the bigger a cell becomes, the lower its surface area to volume ratio will be.
The chicken egg is just one large cell, the largest cell produced by most animals. The skin and liver cells are much smaller, measuring roughly 25-30 micrometers. However, the smallest of the list by far is the bacterial cell, measuring a mere 1-3 microns. This size tells us that the greatest surface area to volume ratio belongs to the bacterial cell.
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16
Select the correct answer.
Which type of evidence is often reviewed in microscopy?
OA physical evidence
OB.
trace evidence
OC. personal experience
OD
testimonial evidence
OE.
circumstantial evidence
Answer:
B. Trace Evidence
Explanation:
Trace evidence is like fiber or hair or gunshot residue to it would be B. Trace evidence
The physical evidence and trace evidence are both reviewed under microscopy. Therefore, option A and option B are correct statements.
What is microscopy?Microscopy is a technique to review the smaller size object at high magnification. Forensic science uses the physical or trace evidence found at the crime scene to review under microscopy.
Physical evidence refers to the tangible objects found at the crime scene, such as murder weapons or tool marks. On the other hand, trace evidence refers to the small or even microscopic pieces of evidence left at the crime scene, such as hair, or DNA.
Using the microscopy technique, the forensic team can determine the source of the murder weapon used at the crime scene or even link the suspect to the death of the victim. However, other types of evidence that do not come under microscopy, such as testimonial evidence or circumstantial evidence are also used to build a strong case against the suspect.
Therefore, the physical evidence and the trace evidence both are reviewed under microscopy.
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What class is the sting ray in?
Answer:
Cartilaginous fishes
Explanation:
Answer:
math lol what he said so yah
Choose the description that best matches the labeled part of the ear.
Answer:
The second to last
Explanation:
The longitudinal sound waves enter the ear canal.
why are some planets harder to see than others planets in the solar system
Answer:
Because they are farther away
Explanation:
Please help part 1. I have another paper
what would represent represent the genotype of a heterozygous pea plant?'
A.white
B.purple
C.PP
D.Pp
Answer:
Pp
Explanation:
A jumbo jet has more gravity acting on it than a single engine plane.
true or false
Answer:
true
Explanation:
Carrie conducted an experiment to see if listening to different types of music would affect a person’s pulse. Her hypothesis was that pulse rate would change with different types of music. She had 10 volunteers. Each of the first 5 volunteers listened to seven different music selections for 30 seconds each. The person’s pulse was taken before the music and after each 30-second interval of music was completed. The other 5 volunteers did not listen to music and had their pulse taken every 30 seconds for 5 minutes. Based on her experiment, Carrie concluded that a person’s pulse rate did change when the person listened to different types of music. Identify the control group, the experimental group, the independent variable, and the dependent variable.
Answer:
Independent variable: MUSIC
Dependent variable: PULSE
Control group: The 5 volunteers that did not listen to music.
Experimental group: The 5 volunteers that listened to seven different music selections for 30 seconds each
Explanation:
- Independent variable in an experiment is the variable that the experimenter changes or manipulates in order to bring about a measurable response. In this experiment, the independent variable is DIFFERENT TYPES OF MUSIC THAT WAS PLAYED BY CARIE.
- Dependent variable is the variable that responds to the changes made to the independent variable. It is the variable being measured in an experiment. The PULSE, which was measured in this experiment, is the DEPENDENT VARIABLE.
- Control group is the group of an experiment that does not receive the experimental treatment. In this experiment, the GROUP OF 5 VOLUNTEERS THAT DID NOT LISTEN TO ANY MUSIC is the CONTROL GROUP.
- Experimental group is the group that is subjected to the experimental treatment in an experiment. In this experiment, the GROUP OF 5 VOLUNTEERS THAT LISTENED TO SEVEN DIFFERENT TYPES OF MUSIC IS THE EXPERIMENTAL GROUP.
Question: What is it that lives if it is fed, and dies if you give it a drink?
A.fire
B,anaimals
C.humans
D.ants
plz help me plzzzzzzzzzzzzz
Answer:
4.i.True
4.ii.False
4.iii.True
The nitrogen, oxygen, and other gases surrounding Earth
A.are pulled toward Earth by gravity
B.are found mainly near the outer edge of the atmosphere
C.exert pressure only at sea level
D. exert pressure that works against atmospheric pressure
Answer:
option A is correct
Explanation:
Which process takes longer, primary succession or glacial retreat?
Answer:
I think it is primary sucession
Explanation:
the process takes a long time
Which molecule has the most energy?
a. carbon dioxide
b. ATP
C. oxygen
d. glucose
Answer:
D glucose
Explanation:
the original molecule at the beginning of the pathway would have the highest amount of free energy.
Gregor Mendel studied pea plants to determine the patterns of inheritance. What is not a reason Mendel used pea plants in his experiments? Check all that apply.
Answer: Gregor Mendel, pea plants were fundamental in allowing him to understand the means by which traits are inherited between parent and offspring. He chose pea plants because they were easy to grow, could be bred rapidly, and had several observable characteristics, like petal color and pea color.
Explanation:
Answer:
B and D
Part 2 is C
Explanation: edge
Which biome is characterized by plants that drop their leaves in the winter
Answer:
temperate deciduous forests
Explanation:
Once blood delivers oxygen, what does it pick up from cells on its way back to the heart?
nutrients
nitrogen
carbon dioxide
Answer:
Your answer is C) Carbon Dioxide.
Answer:
I'm fairly sure its carbon dioxide .
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 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
What enrionmental factor can people with pku control to prevent building up extra phenylalanine in thier brains
Answer:
i-
Explanation:
Which of the following best explains why enzymes are necessary for many cellular reactions?
a.Enzymes supply the oxygen necessary for the reactions.
b.Enzymes change reactants from solids to liquids during the reactions.
c.The reactions take up too much space in the cell if the enzymes are missing.
d.The reactions are too slow to meet the needs of the cell if enzymes are mis
Answer:
C. The reactions take up too much space in the cell if the enzymes are missing.
Explanation:
hich is a similarity between alcohol fermentation and aerobic respiration?
Both require oxygen.
Both require light energy.
Both start with glycolysis.
Both produce alcohol.
Answer:
B they both give information
Explanation:
correct 2022
do all planets move in the same way and the same speed
Answer:
no
the speed is affected by the mass of the planets and venus moves in the opposite direction to the other plants
What term describes the strings of ribosomes that are attached to an RNA transcript at one time?
A. release factors
B. spliceosomes
C. transcription factors
D. mutagens
E. polyribosomes
Answer:
Polyribosomes.
Explanation:
During translation, the subunits of a ribosome surround the transcript and read down stream until they reach the start codon and begin polypeptide synthesis. Once the start codon is exposed, it is available for another ribosome to form around it, thereby initiating another locale for translation. Together the strings of ribosomes are called polyribosomes.
Hi, can somebody please explain this activity to me and what do I do for the graph here? Thanks.
what do chemical reactions do
Answer:
A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.
Explanation:
What makes petroleum a nonrenewable resource?
O A. When burned, it adds pollutants to the air.
O B. It takes millions of years to form.
O c. It can be replenished within a person's lifetime.
D. When burned, it contributes to global warming.
To obtain the energy needed for life processes, plants break down(blank)
of
to release stored chemical energy through the process of (blank)
А.
water photosynthesis
B
sugar respiration
С
sugar photosynthesis
D
water respiration
The mechanism by which plants convert carbon dioxide, water, and sunshine into oxygen and sugar-based energy is known as Photosynthesis.
What steps are involved in a plant's photosynthesis?Green plants and various other organisms convert light into chemical energy through a process called photosynthesis. Light energy is gathered and utilised during photosynthesis in green plants to change waters, carbon dioxide, and minerals into oxygen- and energy-rich organic molecules.
What makes photosynthesis so crucial?The significance of photosynthesis Solar or radiant energy is converted into chemical energy during photosynthesis. The production of agricultural crops is directly impacted by the rate of photosynthesis. All living things require oxygen, which it provides for the atmosphere. It keeps the ecosystem's carbon dioxide and oxygen levels in check.
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