Answer:
C. 48
Explanation:
Simple thing to bear in mind; The number of neutrons is equal to the Atomic number - the Mass number. Because the Atomic number tells you the number of Protons, whilst the mass number tells you the number of both PROTONS and NEUTRONS. So 84 - 36 is 48. You have 48 neutrons
Answer: Lipoproteins; site of utilization
Amber ate a meal high in fat. Initially, after digestion and absorption, the different types of fat will be packaged into lipoproteins and carried to the site of utilization
Explanation:
Lipoproteins are proteins that formed complex with lipids (fats). After a meal rich in fats, they help to transfer lipids from the site of absorption of the site of utilization. Based on the their density, lipoproteins are classified as:
- very low density lipoproteins (VLDLs) which transports triglycerides
- low density lipoproteins (LDLs) which transports several kinds of fats
- high density lipoproteins (HDLs) which transports cholesterol
- very high density lipoproteins (VHDLs) which transports phospholipids
Muscle cramps are caused when the muscle takes longer than normal to relax after a contraction. During contraction, the myosin heads attach on their binding sites on the actin filament and pulls on the filament hence shortening the sarcomeres. For the myosin head to release its binding site on the actin filament, ATP attaches to an active site on the myosin and is hydrolyzed to ADP and Pi. This causes relaxation after a contraction cycle. Cramps, therefore, may be due to depletion of ATP molecule in the muscles cells.
Another reason for cramps may be a high amount of calcium in the muscles that bind to troponin on the actin filaments. This exposes the myosin binding sites longer hence promotes the formation of cross-bridge even when the contraction of the muscle is not intended anymore.
The tundra and the savanna desert
Answer:
Soil structure is the arrangement of soil peds. This arrangement determines the space between soil peds, which determines the porosity of soil. Soil texture is determined by the amount and distribution of mineral particles.
