Answer:
A single phospholipid molecule has a phosphate group on one end, called the “head,” and two side-by-side chains of fatty acids that make up the lipid “tails. ” The phosphate group is negatively charged, making the head polar and hydrophilic, or “water loving.” The phosphate heads are thus attracted to the water
<h2>Inflation </h2>
Explanation:
During inflation, air moves in the lungs when the air pressure within the alveolar spaces falls below the atmospheric pressure
The forces that normally cause changes in volume of the chest and lungs arises not only from muscle contraction but from the elastic properties of both the lung and the chest
The force required to maintain inflation of the lung and to cause airflow is provided by the chest and diaphragm (the muscular partition between chest and abdomen), which are in turn stretched inward by the pull of the lungs
Hence during lung inflation, the lungs cling to the internal surface of the chest wall as it expands
Answer:
prokaryotic: A prokaryote is a single celled organism that does not have a nucleus or membrane bound organelled and its dna is in the cytoplasm. They also cant undergo mitosis because they dont have a nucleus. they are most likely to be unicellular
examples: archea and bacteria
eukaryotic:
A eukaryotic cell is an organism made up of cell that contain their dna in a nucleus. Eukaryotic cells contain membrane bound organelles as well as ribosomes.not all of them are the same though. mst of them are multicellular and go through mitosis
examples: fungi, plants, animals.
Radiometric dating method. Geologists commonly used radiometric age-dating to determine the numerical age of rock and fossils based on the natural radioactive decay of certain elements, including potassium and carbon.
I would say the answer is D
