The alimentary canal consists of the mouth, pharynx, esophagus, stomach, small intestine, and large intestine.
The digestive process starts in the mouth.
Hemoglobin's function involves the transport of oxygen from the lungs to the body's tissues and the transport of carbon dioxide from the body's tissues to the lungs.
The small intestine, approximately 7 meters long, is responsible for the absorption of nutrients and is characterized by small villi and microvilli.
The large intestine, approximately 1.5 meters long, mainly absorbs water and hosts the intestinal microbiota.
Pancreas and Spleen Functions
The pancreas does not digest fats and proteins.
The spleen's functions include:
Removal of pathogens.
Removal of cellular debris.
Lymphocyte production.
Maturation of erythrocytes.
The function NOT performed by the spleen is blood cell production in adults.
Pancreatic islets (Islets of Langerhans) are endocrine glands that release hormones, including insulin and glucagon.
Thymus and Hormone Production
The thymus functions in the maturation of T lymphocytes.
Growth hormone (GH) is produced by the anterior lobe of the pituitary gland (adenohypophysis).
Adrenaline is produced by the adrenal medulla.
Aldosterone is produced by the adrenal cortex.
Cellular Organelles and Protein Production
For producing membrane-associated glycoproteins, the rough endoplasmic reticulum intervenes first, followed by vesicles, and finally the Golgi apparatus.
Viruses and Antibiotics
The nucleocapsid consists of nucleic acid and capsid.
Surface projections protruding from the viral envelope are called peplomers.
The process of virus adhesion to a cell, mediated by surface proteins, is defined as adsorption.
Antibiotics are produced by bacteria and fungi.
Sterilization and Disinfection
Sterilization involves any chemical or physical process that leads to the elimination of all living microbial organisms, including spores and fungi.
Disinfection involves any chemical or physical process that leads to the elimination of almost any form of living microbial organisms, whether pathogenic or non-pathogenic, but not including spores and fungi.
A bacteriostatic agent is capable of inhibiting the growth and multiplication of bacteria.
Tobacco mosaic virus has a defined helical symmetry.
RFLP Analysis
RFLP stands for Restriction Fragment Length Polymorphism.
RFLP analysis detects genetic polymorphisms based on variations in the length of the DNA sequence.
Restriction enzymes cut DNA at specific recognition sites in RFLP analysis.
Gel electrophoresis is used to separate DNA fragments in RFLP analysis.
RFLP analysis can be used to identify genetic diseases caused by mutations.
Cloning and Cell Types
Dolly, the cloned sheep, was created using somatic cell nuclear transfer.
A somatic cell (adult somatic cell) was used as the donor cell in cloning Dolly the Sheep.
Cellular Components and Structures
Newly produced RNA in a liver cell contains Guanine and ribose.
Newly synthesized protein in a liver cell contains Peptide bonds and amino bonds.
The protein unit that forms the icosahedral capsid is called a capsomer.
Molecular Bonds
Restriction enzymes break Phosphodiester bonds.
Dolly the Sheep Cloning
The cloning of Dolly the sheep was significant because it was the first successful cloning of a mammal.
Dolly the sheep was cloned in 1996.
Reproductive cloning describes the technique used to create Dolly the Sheep.
Bird Adaptations
Hollow bones are an evolutionary adaptation that allows birds to fly.
Air sacs are a unique respiratory adaptation developed by birds.
The shape of the bird's beak is fundamental in determining the diet of each species.
The muscular ventricle is a specialized structure of birds involved specifically in the digestion of food.
The crop in a bird serves for food storage.
The syrinx is the organ responsible for producing sounds in birds.
Plumage maintains the temperature balance in birds.
Cellular Functions and Genetics
Mitochondria produce ATP (energy).
If two healthy parents have a sick child with cystic fibrosis (autosomal recessive), there is a 25% probability that the next child will be sick.
For allele frequencies to remain constant in a population, all of the following must be met: Very large population, Random mating between individuals, Absence of natural selection, Absence of mutations, and Absence of gene flow between populations.
Mitosis and Respiratory System
Prointerphase is NOT a phase of mitosis.
The trachea is part of the respiratory system.
Genetics and Bacterial Types
Phagocytosis is the ability of some cells to engulf solid particles and destroy them.
To carry out photosynthesis, a plant needs carbon dioxide and water.
Lactobacilli are NOT heterotrophic bacteria.
The fact that Bateson and Punnett did not get the expected ratio of 9:3:3:1 in their experiment can be explained by assuming that the two genes considered were associated.
Nervous System and Surfactant
Chondrocytes are NOT part of the nervous system.
Translation takes place in the ribosome.
The oldest land plants are bryophytes.
The surfactant reduces the tendency of the alveoli to collapse and is normally produced even in the presence of distress syndrome.
DNA and Albinism
In a DNA fragment with 12 thymine molecules and 15 guanine molecules, there are 27 single hydrogen bonds between nitrogenous bases.
At the end of the photosynthesis process, a plant will have produced 1 glucose molecule and 6 oxygen molecules.
Bile prepares fats for digestion by specific enzymes.
If both parents are healthy heterozygotes for albinism (autosomal recessive), there is a 25% probability that their child will have albinism.