A. epithelial cells form from the body's skin
Answer: ENERGY AND MATTER MOVE between the land, water, atmosphere, and biosphere — between the four spheres. In addition to natural interactions, human activities, such as the clearing of rain forests, can affect interactions between the spheres.
Explanation:
Answer:
C
Explanation:
RNA is found mostly in the nucleus but can also be found in the cytoplasm, but it is not limited to it.
Answer:
500
Explanation:
According to the given information, the total number of albino people in the population= 1000/4 = 250.
Since albinism is an autosomal recessive trait, the genotype of albino people would be homozygous recessive. Therefore, the frequency of homozygous recessive genotype in the population (q2) = 250/1000= 0.25.
The frequency of recessive allele (q) = square root of 0.25 = 0.5
Since p+q=1. So, p (frequency of dominant allele) = 1-q = 1-0.5 = 0.5
Frequency of heterozygotes in the population= 2pq = 2 x 0.5 x 0.5 = 0.5 or 50%
Therefore, expected number of heterozygotes in the given population= 50% of 1000 = 500
Answer;
-Suspension
Cells not dissolve in blood but they form a suspension because they do not settle out of the blood either
Explanation;
-Blood is a solution of salts, glucose, urea and a few other small compounds. It's a colloid of plasma proteins, including albumin, transport proteins and antibodies. It's also a suspension of blood cells and platelets.
-Suspensions and colloids are two common types of mixtures whose properties are in many ways intermediate between those of true solutions and heterogeneous mixtures. A suspension is a heterogeneous mixture of particles with diameters of about 1 µm (1000 nm) that are distributed throughout a second phase.
-Common suspensions include paint, blood, and hot chocolate, which are solid particles in a liquid, and aerosol sprays, which are liquid particles in a gas.
