Bio Test 10.17.23
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
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What is the pH of water?
The pH of water is 7
What is surface tension?
Measurement of water’s surface strength. Due to cohesion.
What is capillary action?
Water getting “pulled up” a narrow passage way. Due to adhesion.
How does adhesion differ from cohesion?
Adhesion–water bonding to another substance Cohesion–water bonding to water
Carbohydrates are?
The elements in carbs are: Carbon, Hydrogen, and oxygen. Carbs function is to provide a means of energy .
Differentiate between simple carbs and complex carbs.
A simple carbohydrate can be found in foods like sugar and syrup, and are composed of glucose, sucrose, and galactose. They are digested as quick energy and are made up of carbon, hydrogen, and oxygen. Complex carbohydrates have longer chains of sugar molecules and take longer for the body to digest. The body converts complex carbohydrates, such as bread or pasta, into glucose to use for energy.
Lipids are?
The elements in lipids are Carbon, Hydrogen, and Oxygen. Lipids are large nonpolar molecules that do not dissolve in water. The phospholipid bilayer is found in the cell membrane. Categories of lipids are: triglycerides, phospholipids,wax and steroids (cholesterol is an example of a steroid).
Differentiate between hydrophilic and hydrophobic.
Hydrophilic means the characteristic to attracted to water, and hydrophobic is the tendency to repel water. The phospholipid heads are hydrophilic phosphates and the tails are hydrophobic fatty acids .
The name of a monomer is:
a monosaccharide.
A disaccharide is formed when
two monosaccharides combine .
A polysaccharide is a molecule formed by
three or more monosaccharides .
How many amino acids are there?
20
Differentiate between LDL and HDL.
A HDL is good cholesterol and LDL is bad cholesterol. LDL is low density and leads to buildup of plaque. HDL is high density and contributes to less amounts of buildup in the arteries.
DNA is?
stands for Deoxyribonucleic acid. Its function is to contain information essential for all cell activities and division.
What is the “job” of enzymes?
To speed up chemical reactions by breaking down substrates.
Differentiate between a dipeptide and a polypeptide.
Two amino acids combine to form a dipeptide. Three or more amino acids combine to form a polypeptide
What is atherosclerosis?
The condition derived from a buildup of cholesterol plaque in the arteries leading to adverse health effects.
Cholesterol is:
Cholesterol is an example of a lipid. More specifically a steroid.
What is plaque?
Buildup of cholesterol plaque in the arteries leading to atherosclerosis.
Nucleic acids are?
A monomer is called a nucleotide . A nucleotide contains these 3 parts: phosphate group , a five-carbon sugar, and a ring shaped nitrogen base.
2 examples of nucleic acids are
DNA and RNA
What is the function of RNA and DNA?
RNA stands for Ribonucleic acid.. Its function is to store and transfer information essential for the manufacturing of proteins. DNA stands for Deoxyribonucleic acid. Its function is to contain information essential for all cell activities and division.
Proteins are:
Elements found: Carbon, Hydrogen, Oxygen, and Nitrogen.
Where they can proteins be found?
Proteins are formed by the linkage of monomers and can be found in the skin and muscle of plants and animals.