Answer:
B
Explanation:
Cell membranes allow ALL substances to pass through easily
It is selectively permeable so only certain molecules can pass through it.
It acts more like a fluid than a solid because its molecules constantly moving.
Cell membranes surround all animal, plant, and bacterial cells.
It is a bilayer composed mainly of phospholipids and proteins
Answer: Two pairs of each chromosome
Explanation: Diploids are cells that contain two pairs of each chromosomes. In humans each cell contains 23 pairs of chromosomes resulting in 46 chromosomes total for each cell.
Yes people are trying to plant more trees and promote awareness on afforestation and some have even started making rules the 'clean air act'
Answer:
E) Either anaphase I or II
Explanation:
Failure of segregation of homologous chromosomes during anaphase I or failure of segregation of sister chromatids during anaphase II leads to the presence of the abnormal number of chromosomes in resultant gametes. In the given example, the egg mother cell with 48 chromosomes (24 pairs) would enter meiosis I but the failure of one pair of homologous chromosomes to segregate from each other followed by normal meiosis II would result in the formation of two gametes with one extra chromosome and two gametes with one less chromosome.
On the other hand, if the nondisjunction occurs at anaphase II of meiosis II, two normal gametes, one gamete with one extra chromosome and one gamete with one less chromosome will be formed. Therefore, nondisjunction at anaphase I or anaphase II would have resulted in the production of eggs with one extra chromosome.