An operculum covers and protects the gills.
Explanation:
An operculum is a flexible bony type of plate which protects the sensitive gills. When water is inhaled through the mouth it moves over the gills and is exhaled from below the operculum ( gill cover). gills remove oxygen that is present in the water and diffuse carbon dioxide from fish's body. Some fishes have spines which are located on the opiculum( gill cover) which acts as a defense mechanism to secure them from the predators.
I would go for C. Accuracy is the best one if you have the right information then your numbers should be right
Answer:
1. Sickle cell anemia is an inherited red blood cell disorder in which there aren't enough healthy red blood cells to carry oxygen throughout your body. Normally, the flexible, round red blood cells move easily through blood vessels. In sickle cell anemia, the red blood are shaped like sickles or crescent moons.
Treatments: Blood transfusion
Symptoms: Pain
2. Diabetes is the <u>condition in which the body does not properly process food for use as energy</u>. Most of the food we eat is turned into glucose, or sugar, for our bodies to use for energy. The pancreas, an organ that lies near the stomach, makes a hormone called insulin to help glucose get into the cells of our bodies.
3. Acne is a skin condition that occurs when your hair follicles become plugged with oil and dead skin cells. It causes whiteheads, blackheads or pimples. Acne is most common among teenagers, though it affects people of all ages.
Answer: The claim that gene regulation results in differential gene expression and influences cellular products (albumin or crystalline) is best supported by t<u>he specific transcription factors made in a cell.</u>
Explanation:
Genes store deoxyribonucleic acid or DNA that makes up the genome. The genetic information within genes is expressed through a process called transcription followed by translation.
During this, the genotype of the organism is changed into its phenotype or physical characteristics genes are controlled or regulated through certain molecular mechanisms These essentially determine transcription and translation and whether gene products is active or in active genes are turned on when they are able to transcribe the genome.
gene expression may be regulated
via
- modulation before or after the transcription process
- modulating translation
- modulation after translation
A control for the transcription process is called a transcription factor. These are DNA sequence specific proteins that are capable of activating or suppressing transcription at certain sites. In different cell types, different combinations of transcription factors contribute to gene expression.
The answer is Tropical Rainforest Biome
The tropical rainforest has a moderate temperature with seasonal changes. The amount of rainfall in a tropical rainforest is high. It has a thick canopy of trees which filters out a majority of the sunlight which is why the forest floor is almost shaded.
