Answer:
irreversible denaturation
Explanation:
Pepsin is a monomeric protein with two domains with a beta barrel architecture. The active enzyme site contains two aspartate residues. To activate, one of these aspartate residues must be protonic, while the other must be deprotonated. This occurs between the acidic pH (pH 1-5) provided by the HCl in the gastric juice. This is how the transition from pepsinogen to active pepsin occurs. However, above pH 7, pepsin irreversibly denatures.
what shape would be the most desirable for larger cells?
Final answer:
The most desirable shape for larger cells is one that maximizes surface area to volume ratio for efficient exchange of nutrients and waste, often a sphere. Various cell shapes can also result from functional requirements or physical constraints influencing cellular function.
Explanation:
The most desirable shape for larger cells would be one that maximizes the surface area to volume ratio, to ensure efficient exchange of nutrients and waste. Cells that are too large may not be able to support the rate of diffusion required for their volume due to a decreased surface area-to-volume ratio. Spherical shapes tend to be the most efficient in terms of surface area-to-volume ratio because as the cell increases in size, a sphere's surface area increases as the square of its radius, while its volume increases as the cube of its radius.
Considering two cells, a spherical cell with a diameter of 5 µm would likely exchange nutrients and wastes more efficiently than a cubed-shaped cell with a side length of 7µm. The surface area-to-volume ratio for a sphere is higher than that of a cube, resulting in shorter distances for nutrients and wastes to travel to and from the cell's periphery, leading to faster molecular exchange rates.
Cell shapes can also be affected by physical forces and functional requirements. For example, red blood cells adopt a biconcave disc shape to optimize the exchange of oxygen, whereas nerve cells have long extensions to aid in signal transmission. Thus, while most cells approximate a sphere for efficiency, different shapes can arise from the cell's necessity to fulfill specific roles within an organism.
The study of the structure function and diseases of the muscles is called
When the genotype consists of a dominant and a recessive allele, the phenotype will be like the:?
What do all living things need?
a. energy, water, sunshine, protection
b. food, water, air, a place to live
c. oxygen, outer covering, parents, vitamins
d. water, parents, a place to live, air
The patient was treated for a skin infection caused by an infestation with the itch mite. this condition is called
How is it possible for percolating groundwater to remove mineral material as well as deposit it?
Final answer:
Groundwater can both remove and deposit mineral material, depending on its flow and the surrounding materials.
Explanation:
Groundwater can both remove and deposit mineral material through various processes. When groundwater flows through porous materials like sand and gravel, it can erode and dissolve minerals, carrying them away. This is how groundwater can remove mineral material. On the other hand, when the flow of groundwater slows down or stops, the minerals it carries can precipitate out and get deposited in the pores or fissures of the surrounding materials. This is how groundwater can deposit mineral material.
"where does the energy for the calvin cycle come from?"
Final answer:
The Calvin cycle uses ATP and NADPH, which contain energy from sunlight, to turn carbon dioxide into carbohydrates, such as glucose, for long-term energy storage.
Explanation:
The energy for the Calvin cycle is derived primarily from ATP and NADPH, which are compounds rich in chemical energy. These molecules are produced during the light-dependent reactions of photosynthesis.
The ATP and NADPH, carrying energy captured from sunlight, are utilized by the Calvin cycle to convert carbon dioxide into carbohydrate molecules, such as glucose, which serve as long-term energy storage for the cell. Specifically, the Calvin cycle harnesses the energy in the form of 6 ATP and 6 NADPH to produce Glyceraldehyde-3-phosphate (GA3P) molecules that will eventually form the backbone of carbon atoms for carbohydrates, primarily glucose. Thus, the Calvin cycle effectively converts the short-lived energy stored in ATP and NADPH into a more stable form of energy in carbohydrates, a process essential for life on Earth.
The method in which some trees in an area of forest are cut while others are not is called _____. selective cutting pest management strip cropping clear cutting
selective cutting is the answer hope this helps you
Name the valve (sphincter) located between the stomach and the duodenum
The "pyloric sphincter" which located between the stomach and the duodenum.
What is pyloric sphincter?The movement of food from the stomach into the esophagus is controlled by the pyloric sphincter at its base.
What is duodenum?The beginning of the small intestine would be the duodenum. The duodenum's primary function is to finish the first stage of digestion. Food first from the stomach has been combined with pancreatic enzymes and gallbladder bile in this area of the intestine. Bile as well as the enzymes aid in food digestion.
The smooth muscle ring known as the pyloric sphincter separates the small intestine from the stomach. It opens and shuts to regulate the movement of stomach juices as well as partially digested food first from the pylorus towards the duodenum.
Therefore, the "pyloric sphincter" which located between the stomach and the duodenum.
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Which change is most likely to cause a cold spell in Minnesota?
A. The trade winds move north.
B. The polar jets stream moves south.
C. The doldrums move south.
D. The subtropical jet stream moves north.
Behaviors that stem from innate, automatic behavioral tendencies that will occur reliably in all members of a species in response to some sort of cue from the environment, are called
The process by which our sensory receptors and nervous system receive and represent stimulus energies from our environment
Answer:
Sensation
Explanation:
A P E X
3 reasons why determining cause of death can be difficult
Compare and contrast the structure of a DNA nucleotide and an RNA nucleotide.
DNA and RNA nucleotides differ in their sugar molecules, DNA has deoxyribose while RNA has ribose. DNA is double-stranded while RNA is single-stranded. DNA has thymine as one of its bases while RNA has uracil.
Explanation:The structure of a DNA nucleotide and an RNA nucleotide differ in several ways. Both DNA and RNA nucleotides have three components: a sugar molecule, a phosphate group, and a nitrogenous base. However, the sugar molecule in DNA is deoxyribose, while in RNA it is ribose. Additionally, RNA is single-stranded, while DNA is double-stranded. Finally, the nitrogenous bases in DNA are adenine, guanine, cytosine, and thymine, while in RNA, thymine is replaced by uracil.
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How is the concentration of animal bones explained? (movie: surviving africa)?
Which of these happens during the postabsorptive state?
Differentiation of cells changes the nucleic information. True or false?
Uncovered lightbulbs may expose food to which type of hazard ?
Answer:
Physical Hazard
Explanation:
An hazard is defined as something or a substance that by itself or due to its interaction or combination with another substance has the potential to cause harm.
We have 3 types of hazards.
a. Physical Hazard: This has to do with substances such as: uncovered light bulbs
b. Chemical Hazard: This has to do with chemical substances e.g. Acids, Bases, Pesticides, radioactive substances, e.t.c.
c. Biological Hazard: For example microorganisms such as Viruses, Bacteria and Fungi
Uncovered light bulbs may expose foods to physical hazard such as if the light bulbs get shattered , the presence of broken light bulb shards in food is very harmful.
The blood vessel that brings blood to the kidney directly from the aorta is the __________.
_____ act on the cns to suppress or slow bodily processes and reduce overall responsiveness.
A property of t cells, but not b cells, is their __________.
Which of the following refers to changes in species characteristics over time?
evolution
interdependence
metabolism
reproduction
Evolution
.................................................
which component of human milk carries out phagocytosis of bacteria and production of complement proteins?
When assessing the chest of an adult female critical trauma patient, the emt should inspect/palpate for ___________ in addition to crepitations and deformities?
Which conclusion best supported by the information?
Answer:
Option B
Explanation:
Both plants and animals can reproduce asexually, therefore option A is incorrect
Organisms that reproduce sexually have the advantage to produce genetically diverse offspring. Hence, option C is incorrect
Heterotrophs can reproduce both sexually and asexually, hence there is not no relation between being heterotroph and reproducing either asexually or sexually. Hence option D is also incorrect
If an organism reproduces asexually, then there is no pressure on it to select its mate. Hence, option B is correct
How many amino acids are affected by a change in one nitrogen base?answer?
It changes one amino acid in the genetic code if a change in one nitrogen base occurs because one triplet codon is responsible to make one amino acid.
What is genetic code?DNA is the genetic material that stores information about the organism, this information is first converted into RNA by the process of transcription. After the transcription, this information is converted into the amino acid sequence.
Genetic code is the triplet sequence of a nitrogen base, which codes for the protein if any base is changed with another base, it will change the amino acid. Amino acid is made by triplet code, three bases are responsible for one amino acid.
Therefore, one amino acid is affected by a change in one nitrogen base, due to a triplet genetic codon.
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What does an ant use to keep all of its hair in place?
Which of these describes an ideal environment for bacterial growth?
A bread whose texture is too dense was probably made from a dough containing too __________
What part of a neuron receives signals and sends a message to the cell body? what part of a neuron receives signals and sends a message to the cell body? axon terminal axon dendrite axon hillock?
The dendrite of a neuron receives signals and sends them to the cell body. The signals then move through the axon to the axon terminal, which transmits the signal to other neurons. The axon hillock is where the axon connects to the cell body and where signal transmission begins.
Explanation:The part of a neuron that receives signals and sends a message to the cell body is called the dendrite. Each neuron has many dendrites, which are designed to receive chemical signals from other neurons and transmit these signals to the cell body. The signals then move further down the neuron through the axon, reaching the axon terminal, which is responsible for transmitting the signal to the next neuron.
The axon hillock is also an important part of this process as it is the area where the axon connects to the cell body and where the initiation of signal transmission to other neurons begins.
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