Answer:
- Phosphate group head
- Two fatty acid tails
Explanation:
A phospholipid is made up of a phosphate group head and two fatty acid tails. They are connected by a molecule of glycerol.
To form cell membranes, phospholipids line up with their hydrophilic (water loving) heads on the outside of the cell and their hydrophobic (water hating) tails inside.
A second layer of phospholipids forms with the heads facing inside the cell and tails facing away. This forms a double layer - with the phosphate group heads on the outside, and fatty acid tails on the inside. This double layer, called a lipid bilayer, forms the cell membrane.
The cold dense air from water goes under the warm less dense air on land forming a low air pressure system
it is the opposite for a high air pressure system
Answer:
Part A: Pp
Part B: 1/3
Explanation:
A: The purple flower color is regulated by dominant allele "P". Since self-fertilization of the purple-flowered plant with unknown genotype gives both purple and white-flowered progeny in almost 3:1 ratio, the parent plant was heterozygous dominant for the trait. Its genotype is "Pp".
Segregation of recessive and dominant alleles during gamete formation leads to the production of two types of gametes with either "P" or "p" alleles. The random fusion of these gametes produces progeny in following phenotype ratio= 3 purple: 1 white.
B. Out of the 3 purple-flowered progeny, 1 is homozygous dominant (PP). Therefore, the probability of the purple-flowered progeny to breed true is 1/3.
Answer:
Diffusion
Explanation:Diffusion is the process in which molecules move from an area of lower concentration to higher concentration along the concentration gradient.
The answer is (d.) iridescent shark catfish.
Cartilaginous fishes are vertebrates that has jaws, paired fins, scales, and a heart like whale shark, great white shark, and manta ray. This class of fishes are divided into two: Elasmobranchii and Holocephali. While iridescent shark catfish is simply a shark catfish but not a shark.