5th grade question 50 points  carbon dioxide is not considered an organic molecule. photosynthetic organisms turn it into an organic molecule in the form of a(n)a)lipid. b)protein. c)carbohydrate. d)nucleic acid.7)  which statement correctly describes the diagram? a)the process in which glucose is produced requires oxygen. b)the process in which oxygen is used requires light energy. c)the process in which carbon dioxide is used also forms glucose. d)the process in which carbon dioxide is used releases light energy.8)  according to the law of conservation of matter, in any food chain we know thata)the quantity of matter in producers and consumers is always equal. b)matter is created at the start of a food web and destroyed in the end. c)matter is changed into various forms but the total quantity remains unchanged. d)the amount of matter increases as the food web progresses from the producers to the consumers.9)  plants and animals use the oxygen in the air to turn food into energy. this life process is known as what? a)digestionb)excretionc)growthd)res piration10)  we eat food for energy. the energy for any food chain begins with the sun and sunlight. name an organism that is a producer, that converts sunlight into chemical energy or sugar. a)foxb)grassc)mushroomd)rabbit

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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.