Which statement describes the availability of carbon in the ocean and its use by marine processes? a. the ocean is a carbon sink, with carbon being utilized by photosynthesis of phytoplankton. b. the ocean is a carbon sink, with carbon lost due to the transpiration of marine algae. c. he ocean is a carbon source, with carbon being utilized during thermocline formation. d. the ocean is a carbon source, with carbon lost due to the respiration of marine mammals.

Option A

Explanation: The carbon that is found in the oceans are utilized by the phytoplankton found in the oceans.

The carbon sinks in the ocean and then the process of photosynthesis required carbon dioxide and sunlight for the process of the photosynthesis.

The carbon dioxide is utilized by the phytoplankton that is found in the epipelagic zone of the ocean.

the answer is: trichonympha lives in the gut of termites and digests cellulose eaten by the termite.

this is an example of a symbiotic association of a protozoan with its mode of association.

hope i

-lavira: )

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.