Answer:
The best answer from the list of options is option D (They are colorless and feed on other, smaller cells)
Explanation:
Euglenas have cells that contain chloroplasts, which means they can make their food like plants through photosynthesis, and when it is dark where they can't get sunlight they can also make food by engulfing their prey through the plasma membrane and absorb them. Euglenas are heterotrophic since they call also feed on smaller cells. Their whip-like tail when viewed under the microscope, is colorless. However, the chloroplasts make them appear green and they can also come in red color.
Answer:
All types of living organisms use cellular respiration for the production of energy from food molecules such as glucose.
Explanation:
Respiration is energy releasing process which occurs in mitochondria of the cell. Respiration has two types i. e. Aerobic and anaerobic respiration. In aerobic respiration, energy is released from the breakdown of glucose molecules with the addition of oxygen while anaerobic respiration is the release of energy from breakdown of glucose molecules without the use of oxygen.
Answer:
high-level
Explanation:
Based on the power of their activity the disinfectants are grouped into various categories :
1. High-level germicides are the ones that can kill vegetative cells, fungi, viruses, and endospores and if used for an extended period they can lead to sterilization.
2. Intermediate-level germicides are not very effective against endospores and some viruses.
3. Low-level germicides can kill only vegetative cells and some enveloped viruses, but they are not effective against endospores.
Answer:
The first multicellular organisms occurred from symbiosis (cooperation) of different species of single-cell organisms, each with different roles. Over time these organisms would become so dependent on each other they would not be able to survive independently, eventually leading to the incorporation of their genomes into one multicellular organism.
Explanation:
Multicellularity has evolved independently at least 46 times in eukaryotes,[5][6] and also in some prokaryotes, like cyanobacteria, myxobacteria, actinomycetes, Magnetoglobus multicellularis or Methanosarcina. However, complex multicellular organisms evolved only in six eukaryotic groups: animals, fungi, brown algae, red algae, green algae, and land plants.[7] It evolved repeatedly for Chloroplastida (green algae and land plants).
Red blood cells cannot divide because they contain no nucleus. more are made thanks to the stem cells inside of bonemarrow
