Anatomy & Physiology
During inhalation, this muscle contracts and flattens, increasing the volume of the chest cavity and helping draw air into the lungs.
What is the diaphragm?
What are carbohydrates, proteins, and fats?
What is xylem?
Different versions of the same gene, such as a dominant and recessive version, are called these.
What are alleles?
This term describes the number of new cases of a disease that appear in a population during a certain period of time.
What is incidence?
Most nutrient absorption occurs in this organ, whose inner surface contains folds and finger-like projections that increase surface area.
What is the small intestine?
These tiny openings on the surface of leaves allow carbon dioxide to enter and water vapor to leave.
What are stomata?
During this type of cell division, chromosome number is reduced by half to produce sperm or egg cells.
What is meiosis?
The time between being exposed to an infectious agent and beginning to show symptoms is called this.
What is the incubation period?
In the lungs, oxygen moves from the alveoli into nearby capillaries mainly because of a difference in this factor between the air and the blood.
What is concentration, or partial pressure?
If a plant's stomata remain closed for a long period, this process will decrease because less carbon dioxide can enter the leaf.
What is photosynthesis?
Two parents with the genotypes Aa and Aa have a child. This is the probability that the child will inherit the recessive genotype aa.
What is 25%, or 1/4?
At a banquet, 40 out of 200 people who ate a certain food became sick. This is the attack rate for that group.
What is 20%?
These immune cells can develop into plasma cells, which produce antibodies that target specific foreign substances.
What are B cells, or B lymphocytes?
This plant hormone helps control growth toward light by causing cells on one side of a stem to elongate more than the other side.
What is auxin?
A mutation changes a DNA base and causes one amino acid in a protein to be replaced by another. This general type of mutation is called this.
What is a missense mutation?
Investigators compare people who became sick with people who stayed healthy and then look backward to see what each group was exposed to. This is this type of study.
What is a case-control study?
If the pancreas stopped releasing digestive enzymes into the small intestine, the digestion of these three major nutrient groups would be greatly reduced.
What are carbohydrates, proteins, and fats?
If a plant's roots cannot absorb enough water, the leaves may wilt because the cells lose this internal water pressure that normally keeps them firm.
What is turgor pressure?
During DNA replication, one strand is copied continuously while the other is copied in short sections. These short sections are called this.
What are Okazaki fragments?
If 30% of exposed people become sick but only 10% of unexposed people become sick, the relative risk for that exposure is this number.
What is 3?