Answer;
-Endocytosis
Explanation;
-Endocytosis includes; phagocytosis, pinocytosis, and receptor mediated: Endocytosis brings substances into the cell, plasma membrane surrounds the substances to be taken in, encloses them in a membrane-bound sac (vesicle) and brings them into the cell
-Phagocytosis: endocytosis of large solid particles (“cell eating”)
-Pinocytosis: endocytosis of extracellular fluid that contains dissolved solutes (“cell drinking”)
-Receptor-mediated: highly selective, ligands bind to specific receptor proteins on the plasma membrane and are then taken into the cell
-Exocytosis: the reverse of endocytosis: substances are removed from the cell; vesicles fuse with plasma membrane and release their contents into the extracellular fluid; important in nerve cells to release neurotransmitter and secretory cells to release cell products (ex. digestive enzymes, protein hormones).
B. animal cell
C. cell membrane
D. DNA molecule
The study of the DNA molecule was instrumental in the formulation of the modern cell theory.
The contemporary cell theory, a key idea in biology, asserts that all living things are made up of one or more cells, that cells are the essential building blocks of life, and that all cells develop from already-existing cells. This notion was developed in large part as a result of research into the DNA molecule.
Significant insights into the mechanisms underpinning cellular operations and heredity have been gained through understanding DNA's structure, function, and involvement in genetic inheritance. The notion that cells are the basic unit of life and carry the genetic information essential for an organism's growth, development, and survival was further cemented by findings linked to DNA replication, gene expression, and mutations.
As a result, the comprehensive and widely embraced contemporary cell theory was made possible by research into the DNA molecule.
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A cell wall was instrumental. Hope I helped!
In food chains, the flow of energy is ALWAYS one-way
C. eliminate waste.
D. avoid predators.
3. How would having a prehensile tail help a tree-dwelling chameleon? A. Its tail would help it grasp branches.
B. Its tail would help it capture food.
C. Its tail would help it balance in the treetops.
D. Its tail would help it maintain homeostasis.
Answer:
2. A. capture prey, and D. avoid predators
3. A. Its tail would help it grasp branches.
Explanation:
All animals need at least food, oxygen, shelter, space to survive. These needs, which are common to all animals, are fundamental to their survival and successful reproduction. However, from the options given in the question, not all animals need to capture prey to survive, as not all animals are carnivores. Some are herbivores that feed on plants, and do not prey on other animals. Also, not all animals need to avoid predators. For example, lions are predators and carnivores, they do not need to avoid predators. The correct options are option A and option D.
A prehensile tail is a tail that is adapted for grasping or holding, and it is common among arboreal animals, i.e. animals that dwell on trees. Therefore, a prehensile tail would help a tree-dwelling chameleon to grasp branches. The correct option is "A. Its tail would help it grasp branches."
The correct answer is water pollution.
The leading cause of limited water supply is water pollution.The overall amount of water on earth is same. The shortage of water lies when it comes to fresh water is used for domestic purposes.
The main cause of limited supply of water is water pollution. Due to pollution the water left for use is restricted as polluted water cannot be used as potable water or commercial purpose.
The pollutant from industries, house, agricultural, pesticides and oil spills are discharged in water bodies which makes it polluted and unfit for use.