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-Dominant- [34]
3 years ago
11

Write a short paragraph describing the role of all four types of lipids: fats, phospholipids, waxes, and steroids

Biology
2 answers:
stepladder [879]3 years ago
3 0
Fats, also known as triglycerides, stores energy, assists in body insulation, and protects the organs. The structure of the cell membrane is made up of phospholipids. Cholesterol and hormones are made up of steroids. The leaves and fruits of several plants are coated with wax to avoid losing water.
Jobisdone [24]3 years ago
3 0

Fats provide long-term energy storage, insulation and protection. Phospholipids are the main component of cell  membranes. Waxes provide a waterproof coating on leaves and feathers.Steroids are part of cell membranes and chemical messengers in the body.

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How are things transported through the membrane
AlladinOne [14]

Answer:

The mechanisms of transport across the cell membrane are as follow: 1- simple diffusion, 2- facilitated diffusion, 3- primary active transport and 4-secondary active transport

Explanation:

The cell membrane is a selectively permeable structure capable of transporting substances by different mechanisms. Simple diffusion is a type of passive transport (i.e. does not require energy) where non-polar molecules (e.g. O2, CO2) pass across the membrane by a process that does not require energy from the cell. Facilitated diffusion is another type of passive transport where larger polar molecules (e.g., glucose and amino acids) pass across the membrane by using specific transmembrane integral proteins. On the other hand, primary active transport is a type of active transport that uses chemical energy (e.g., ATP) to move substances such as metal ions (Na+, K+, Ca2+) across the cell membrane against their concentration gradient. Finally, secondary active transport is another type of active transport where transporter proteins are used to couple the movement of ions (e.g., H+ protons) down their electrochemical gradient to the transport of another ions/solutes against their concentration/ electrochemical gradient.

6 0
3 years ago
What is the function of cell membrane
Vika [28.1K]

Explanation:

The function of the cell membrane is to protect the organelles that break down proteins and nutrients.

It is semi-permeable which means it takes in select nutrients and excretes cell waste into the bloodstream.

5 0
3 years ago
In what way is surface area more important for cells than volume?
Virty [35]

Answer:

As a cell grows in size, the surface area gets bigger, but the volume gets bigger faster. Thinking about this as a ratio (division), the volume is the denominator and the surface area is the numerator. If the volume is getting very big, then the ratio itself will be getting very small.

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tankabanditka [31]

Answer:

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arthropods are the invertebrates which have segmented body and jointed appendages. Examples are insects and crustaceans etc.

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Harlamova29_29 [7]

the answer is one–way valves in veins

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3 years ago
Read 2 more answers
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