Answer:Lipids perform three primary biological functions within the body: they serve as structural components of cell membranes, function as energy storehouses, and function as important signaling molecules. The three main types of lipids are triacylglycerols (also called triglycerides), phospholipids, and sterols.
triglycerides- fat
phospholipids- plant and animal cell membrane
sterols- plant and animal cell membrane's microorganism.
Explanation:
Answer:
Hagfish and Lamprey
Explanation:
Vertebrates are the organism which posses vertebral column or the spinal cord in their skeleton.
The earliest vertebrates had the cranial structures or head but they lacked the vertebral columns and the jaws. These earliest vertebrates lived around 500 to 600 million years ago.
The earliest vertebrates which lacked the vertebral columns and are still alive are the Hagfish and the sea lampreys. These are considered the earliest vertebrates as they lacked the jaws.
These jawless fish are the ancestors of the cartilaginous and bony fish which later developed into amphibians and other groups of animals.
Thus, Hagfish and Lamprey are the earliest vertebrates.
Answer:
A= Salamanders and frogs
lizards and snakes
crocodiles and birds
B= lungfish
Explanation:
for A, I used the chart to see which animals were on the same branch
for B, I used the chart to see which animals were closest to the same branch
I had some difficulty with C