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harina [27]
3 years ago
15

A leaf's stomata _____.

Biology
1 answer:
Fed [463]3 years ago
7 0
Open and close to control evaporation
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Earth’s first life forms were __________. aerobic cyanobacteria photosynthetic chemoautotrophs
SCORPION-xisa [38]
Photosynthetic is the correct answer,
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Indicate whether each of the following descriptions better applies to receptor-mediated endocytosis (R), phagocytosis (F), pinoc
enot [183]

Answer:

PRFM

Explanation:

  • Receptor-mediated endocytosis is a process where cells absorb proteins, hormones, metabolites and sometimes viruses with the formation of an invagination (inward budding of the plasma membrane). Cholera toxin, flu viruses, and diphtheria have sites that cross-react with receptor-binding sites and gain entry into cells through this pathway. <em>Pathogenic particles such as SV40, papillomavirus, and cholera toxin enter the cell via this pathway.</em>
  • Phagocytosis is when a cell ingests or engulf large cells (up to 0.5 µm) or small particles to remove them from circulation. Neutrophils and Macrophages are an example of cells that phagocyte.<em> In animals, this pathway is normally limited to professional cells such as neutrophils.</em>
  • Pinocytosis, also known as fluid endocytosis is the process by which liquid droplets are ingested by a cell. Potocytosis is a variation of pinocytosis, the vehicle for internalization is the caveola, an invagination formed by proteins called caveolin. <em>This pathway depends on caveolin and cavin proteins.</em>
  • Macropinocytosis is the engulfment and uptake process of large amounts of fluids by the appearance of numerous irregular ruffles that eventually collapse towards the cell membrane, enveloping the content. <em>This pathway proceeds by the formation of highly ruffled regions in the plasma membrane which then collapse, resulting in fluid uptake.</em>

I hope you fidn this information useful and interesting! Good luck!

7 0
3 years ago
How are peptide bonds formed between amino acids in the elongation process of the translation of mRNA?
ValentinkaMS [17]

Answer:

amino acid meet up inside the ribosome. Once translation has begun, it continues down the line as mRNA shifts along through the ribosome. ... During elongation, amino acids are continually added to the line, forming a long chain bound together by peptide bonds

7 0
4 years ago
'Complete the diagram to show the results you would see at 40°C and 60°C'
MAVERICK [17]

Answeryeah it’s that one

Explanation: yup, definitely that one.

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10. In what type of plant tissue is mitosis the most easily observed under<br> a microscope?
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A visible nuclei is correct
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