Answer:
Nucleus.
Explanation:
All DNA is stored in the nucleus of the cell (eukaryotes), unless it is a prokaryotic cell.
If it is a prokaryotic cell, the DNA/RNA floats in the cytoplasm.
Answer:
C.) use a systematic method to name, organize, and show relationships among species.
Explanation:
The bulky shape of fat cells makes them ideal for filling spaces of connective tissue. The fat cells represent a type of connective tissue.
The adipose tissue is a type of connective tissue composed of fat cells known as adipocytes.
These cells (adipocytes) are specialized cells that store fats, which can be produced by the human body or obtained from the diet.
The shape of the adipocytes can be spherical, oval, polyhedral (as part of adipose connective tissue), etc.
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Answer:
Cell surface receptors (membrane receptors, transmembrane receptors) are receptors that are embedded in the plasma membrane of cells. They act in cell signaling by receiving (binding to) extracellular molecules. They are specialized integral membrane proteins that allow communication between the cell and the extracellular space.
Explanation:
Answer:
External respiration: CO2 diffuses into the blood
Explanation:
External respiration is also called the pulmonary gas exchange. It refers to the diffusion of O2 from the air in the alveoli of the lungs to blood in pulmonary capillaries and diffusion of CO2 in the opposite direction from the capillary blood into the alveolar air. External respiration in the lungs is responsible for oxygenation of deoxygenated blood coming from the right side of the heart. The oxygenated blood is then returned to the left side of the heart.
