Where does digestive enzymes work?
Digestive enzymes work primarily in the gastrointestinal tract, where they help break down large food molecules into smaller components that can be absorbed by the body. These enzymes are produced by various organs, such as the salivary glands, stomach, pancreas, and small intestine, to aid in the digestion and absorption of nutrients.
Why is lecithin not effective at high temperature?
Lecithin breaks down at high temperatures due to its composition of fatty acids. The heating process causes the fatty acids in lecithin to oxidize, leading to a decrease in its effectiveness. This breakdown can also affect the emulsifying properties of lecithin.
How long will it take to die from carbon monoxide?
The level of carbon monoxide poisoning plays a huge part in how long it takes for it to actually kill. It also depends on how strong the concentration is and how well the immune system handles things.
What where the first eukaryotic organisms on earth?
The first eukaryotic organisms on Earth are believed to have evolved around 2 billion years ago. These ancient eukaryotes likely arose from a symbiotic relationship between different prokaryotic cells, leading to the development of more complex cells with distinct organelles.
What is a rat's oral LD50 for water?
This would be impossible to achieve.
Excessive consumption would lead to vomiting, preventing any futher ingestion of water.
Edit: the person that initially answered this is wrong. Water does have an LD50, and for rats it's 90 ml/kg. It should be something similar to that for humans. Here's a woman that died in a water drinking contest from water intoxification: http://www.msnbc.msn.com/id/16614865/
This has nothing to do with the presence of water, but rather the lack of electrolytes such as salt. Drinking water uses up your body's "supply" of salt, and if it gets used up completely, your brain can no longer transmit electrical signals and you die. If you get a steady supply of salt with the water, you won't have any problems no matter how much water you drink, but as the first answer said, there is a limit to how much water you can drink before your body refuses to take any more, and anything you drink just gets vomited out.
What hormone is responsible for cretinism?
Cretinism is primarily caused by a deficiency in thyroid hormone, particularly during fetal development or early childhood. The lack of thyroid hormone can lead to stunted physical and mental development.
Why does fructose give a positive Benedicts test?
Benedict's test detects the presense of the aldehyde group. Fructose is a ketose rather than an aldose, but it's converted to glucose or mannose (both of which are aldoses) by the base in Benedict's reagent.
All monosaccharides give a positive Benedict's test because they're all either aldoses or alpha-hydroxy ketoses that get transformed into aldoses. Sucrose does not, because while it contains fructose and glucose, both of which do test postive, the saccharides in sucrose are "locked" into hemiacetal form and cannot undergo ring opening to expose an aldehyde group. (It's a very weak lock; dilute acid ... like, say, lemon juice ... will hydrolyse the saccharide linkage and allow the hemiacetal rings to open.)
Transport that does not use energy?
A sailboat harnesses the power of wind to move without using energy from an engine. The boat's sail captures the wind's energy and propels the boat forward through the water. This makes sailboats a more sustainable form of transportation compared to motorized boats.
Is it impossible for a denatured protein to regain its shape?
It is possible for a denatured protein to regain its shape in some cases through a process called renaturation or refolding. This process involves providing the proper conditions, such as correct pH, temperature, and presence of cofactors, for the protein to refold into its native structure. However, not all denatured proteins are able to regain their original shape.
a falling blood PH and a rising partial pressure of carbon dioxide due to pneumonia or emphysema indicates?
How is spectrophotometer important in the clinics?
Spectrophotometers are important in clinics for various tests such as measuring levels of ions, proteins, and enzymes in blood samples. These measurements can help in diagnosing various diseases, monitoring patient progress, and determining the effectiveness of treatments. Spectrophotometers provide accurate and quantitative results, aiding in medical decision-making.
What are some examples of inorganic buffers?
The simplest is probably ammonia-and-ammonium solution, a very common buffer. Since ammonia is a weak base and ammonium is a weak acid, the two being conjugates and both inorganic, it can be used to form an inorganic buffer.
Other examples are harder to find, as almost all inorganic acids are strong like hydrochloric or hydrofluoric acids. Because of some basic chemistry (which takes a textbook to explain) these cannot form buffers.
What is an example of monosaccaharide Glucose Sucrose Cellulose Starch?
Glucose is a monosaccharide found in many foods like fruits and honey. Sucrose is a disaccharide made of glucose and fructose found in sugar cane and sugar beets. Cellulose is a polysaccharide found in the cell walls of plants. Starch is a polysaccharide found in foods like potatoes and grains.
What two sugars combine to make sucrose?
Sucrose is a disaccharide composed of an alpha-glucose and an alpha-fructose. It has an alpha 1-2 glycosidic linkage between the two molecules.
Is living environment same as biology?
No, living environment and biology are not the same. Biology is the scientific study of living organisms and their interactions with each other and their environment. Living environment, on the other hand, refers to the physical and social surroundings that support life and provide habitat for organisms.
How might a scientist use cellular biology to classify organisms from simple to complex?
Scientists examine the creatures cell structure to see if it is prokaryotic or eukaryotic. Prokaryotic organisms are usually simple organisms and eukaryotic ones are complex. For example, humans are eukaryotic. Bacteria is prokaryotic.
Is carbon dioxide good for the body?
Short answer no.Carbon dioxide is a gas that is found in the air, when you inhale your lungs filter out the oxygen and distribute it, what's left over is mostly carbon dioxide. While it is not actively poisenous like carbon monoxide if there is to much carbon dioxide in the air you will not get enough oxygen and you will die.
What is the most deadliest element water air or fire?
This is a fantastic question!
Deadliest is a superlative, so there is no such thing as a "most deadliest" of anything. It's either the deadliest or it isn't.
None of water, air or fire are elements.
But air is probably deadliest of the three. Too much oxygen and you die, not enough oxygen and you die, any toxic gas and you're probably going to die... yet you can't possibly live more than a few minutes without it.
Fire hurts but you can always try to escape. Water you can try and swim in. Both of them can be seen and avoided. Toxic or low oxygen air cannot be seen, avoided or easily escaped from.
Why anion gap is not called cation gap?
The anion gap is named as such because it represents the difference between the measured cations (positively charged ions) and anions (negatively charged ions) in the blood. It focuses on the anions, such as chloride and bicarbonate, that are not routinely measured in basic metabolic panels. Naming it as the "cation gap" would not accurately reflect the ions being considered in the calculation of this parameter.
Charged particles that are given off by the nuclei of radioisotopes as they decay are called?
Charged particles that are given off by the nuclei of radioisotopes as they decay are called decay products or radioactive decay daughters. Examples include alpha particles, beta particles, and positrons. These particles carry energy and momentum away from the decaying nucleus.
What is the advantage of hemoglobin having high histidine content?
High histidine content in hemoglobin helps to stabilize the binding of oxygen to the iron ion in heme groups. This is important for efficient oxygen binding and transport in the blood. Additionally, histidine can act as a buffer to maintain the appropriate pH for hemoglobin function.
What is the freezing point of snot?
The freezing point of snot, which is mainly composed of water and mucus, is the same as the freezing point of water, which is 32 degrees Fahrenheit (0 degrees Celsius).
What is the difference between amino acids and peptides?
Amino acids are the building blocks of proteins, consisting of a central carbon atom bound to an amino group, carboxyl group, hydrogen atom, and a side chain. Peptides are short chains of amino acids linked together by peptide bonds. Peptides can vary in length, with dipeptides containing two amino acids, tripeptides containing three, and so on.
Which lipid is soluble in wather?
Phospholipids are a type of lipid that is soluble in water due to their amphipathic nature, with a hydrophilic head and hydrophobic tail. This property allows them to form the lipid bilayer in cell membranes, providing a barrier that separates the internal and external environments of the cell.
Do molecules move or possess motion?
Yes, molecules possess motion due to their thermal energy. This motion can manifest as vibration, rotation, or translation within the substance. The extent and type of motion vary depending on factors like temperature and molecular structure.