Answer:
D. heterotrophic by ingestion, pseudopods
Explanation:
Protists are generally classified as all eukaryotic organisms that are not plants, animals or fungi. Example is amoeba, paramecium etc.They may be unicellular or multi cellular in nature.Most exist in colonies.
Their mode of nutrition can be photosynthetic or hetrotrophic. Hetrotrophic protists can be divided into phagotrophs and osmotrops/saprotrophs. The phagotrophs makes use of the cell body to engulf the food materials as in amoeba ,carry out extracellular digestion before swallowing it.
Osmotrops absorbed dissolved food from surrounding liquid environments directly. (Some photosynthetic protists can also be heterotrophic.
Amoeboid movement is the mode of locomotion of protists and some other eukaryotes. It involved the protrusion of cytoplasm, which exert pressure on the cell membrane to form pseudopodia and the posterioly evolved <u>Uropods. </u>
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<u>Sol-gel theory has been proposed to expalin this movements, The ectopalsm of amoeba is gelly-like , while the endiplams is less viscpus and said to be sol. The interchange of the cytoplasmic fluis between the endo-and ecto plasm gives the SOL-GEL propulsion of the protopalms for the amoebic moveemnts .</u>
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<u>The false feet(psuedopodium) drags the amoeba along in the direction of the flow of the cytoplasm.</u>
Therefore option D is the right option
Answer:
1) Mechanical Weathering, 2) Chemical, 3) Physical
Explanation:
D. because if they're not careful they become extinct by predators, then they have to be careful to survive by staying alert.
Please help.
autism
Answer:
Following are the organelles present in the cell.
nucleus
mitochondria
ribosomes
lysosomes
endoplasmic reticulum
vacuole
Golgi bodies
Explanation:
Nucleus is the central part of the cell which control all activities in the cell. Mitochondria is also called power house of the cell which is responsible for the production of energy for the cell. Ribosomes and endoplasmic reticulum are responsible for the production of proteins. Lysosomes collects and removes the waste material from the cell. Vacuole store nutrients and food materials for the cell while golgi bodies modifies the protein.
B. answer is correct. HIV that causes AIDS has RNA instead of DNA.
HIV is actually a retro-virus.
Acquired immunodeficiency syndrome (AIDS) is a chronic, potentially life-threatening condition caused by the human immunodeficiency virus (HIV). By damaging your immune system, HIV interferes with your body's ability to fight the organisms that cause disease. The human immunodeficiency virus (HIV) is a lenti-virus (a subgroup of retrovirus) that causes HIV infection and over time acquired immunodeficiency syndrome (AIDS).
