George's science class looked at living cells under a microscope. the students studied an organism that had many different kinds of cells, but each cell had a cell wall and nucleus. to which kingdom did this organism belong?
a. animals
b. protists
c. monerans
d. plants

D. Plants

Explanation:

Among the options given in the question above, the only organisms that have cells with cell wall and cell nucleus are plants.

Plants are organisms with plant cells. The plant cell, like the animal cell, is eukaryotic, that is, it has a nucleus delimited by a nuclear membrane (library). In addition to this characteristic, these cells have a plasma membrane and cytoplasm, structures common to any cell.

Some organelles and structures are shared with other cell types, such as mitochondria, Golgi complex, endoplasmic reticulum, ribosomes and peroxisomes. Other structures, however, are restricted to the plant cell, that is, they are found only in that type of cell. These structures are: cell wall, plastids and vacuole of cellular juice.

an individual’s sex (i.e., whether they are a male or female) is determined by the sex chromosomes. most people have two sex chromosomes, one that is inherited from their mother and one that is inherited from their father. typically, females have two x chromosomes (xx) and males have one x chromosome and one y chromosome (xy). conditions caused by changes (“mutations”) in genes located on the x chromosome are considered x-linked.

x-linked recessive inheritance

most x-linked conditions are recessive. this means that in a person with two x chromosomes (most females), both copies of a gene (i.e., one on each x chromosome) must have a change or mutation whereas in a person with one x chromosome (most males), only one copy of a gene must have a mutation. a female with a mutation in one copy of a gene on the x chromosome is said to be a “carrier” for an x-linked condition. a male with a mutation in a gene on the x chromosome is typically affected with the condition. because females have two copies of the x chromosome and males have only one x chromosome, x-linked recessive diseases are more common among males than females. however, x-linked recessive diseases can occur in both males and females.

for x-linked recessive disorders, an unaffected carrier mother who has a mutation in a gene on the x chromosome can transmit either the x chromosome with this mutation or a “normal” x chromosome to her children. if the father is unaffected, none of her daughters will be affected and all of her daughters will be unaffected—since they will inherit at least one normal x chromosome from their father. however, each daughter will have a 50% chance of being an unaffected carrier like her mother and a 50% chance of both x chromosomes being normal.

the answer is b. glad to .