Answer:
Phospholipids
Explanation:
Phospholipid bilayer is one of the components of the plasma membrane, and is made up of glycerol, two fatty acid tails and a phosphate head group. The head of the layer containing phosphate group is water-loving i.e. hydrophilic, hence, it faces outward attracted to intracellular and extracellular fluid while the tail consisting of two fatty acids is hydrophobic (water-fearing) and hence, faces inward to avoid water.
This property of the phospholipid bilayer is said to be AMPHIPATHIC. This amphipathic nature of the phospholipid component confers semi-permeability upon the plasma membrane as it serves as a chemical barrier, allowing only substances that are small in size and non-polar to move across the membrane without energy (passively).
Similarities
Both plant and animal cells have eukaryotic origins
Both have common organelles like the nucleus, mitochondria and ribosomes
Both are surrounded by a cell membrane
differences
plant cells have a regular defined shape while animal cells have an irregular shape
plant cells have a cell wall while animal cells lack a cell wall
plant cells have a chloroplast for photosynthesis while animal cells do not have a chloroplast
Answer:
Animals are adapted to the complex chain food since when they were no manufactured to the their food system. Without breakdown this complex food chain can not digest without breakdown.
Explanation:
Earthworm alimentary canal:
- Earthworm have a segmentation of well developed characteristics of all animals.
- The alimentary canal of earth worm as well as flatworm consists of buccal cavity, mouth, esophagus, crop, intestines', gizzard, and anus. The digestion occur extracellular that means the digestion occur outside the cells.
- Cockroach is an omnivores. It ranging from starchy to the sweet things to the paper and clothes etc. It suits its diet. Its alimentary canal consists of Foregut, midgut and the hindgut.
- Both are different in their structure as well as in their alimentary canal.
Answer:
Nabta Playa
Explanation:
The world's first astronomical site was built in Africa and is older than Stonehenge.
When an acid is added to water, hydronium ions stay the same