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maks197457 [2]
2 years ago
11

Observe the following protists below. Which statement best compares how a euglena and paramecium obtain food?

Biology
1 answer:
dangina [55]2 years ago
6 0

The euglena uses photosynthesis to make its own food and the paramecium uses cilia to sweep food into its oral groove

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Are the genes in the daughter cells produced by mitosis the same as or different from the genes in the original cell? Explain ho
nydimaria [60]
They will be the same, because in mitosis the chromosomes are replicated exactly. In short, the chromosomes become short and thick, are then pulled apart, so you end up with two pairs of chromosomes, then cytokinesis splits the cytoplasm in to two separate ones, creating the daughter cells
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3 years ago
Your classmate will be doing a presentation on evolutionary medicine in science class. What is he likely to discuss?
Svet_ta [14]

Your friend will talk about the definition of evolutionary medicine, and there by understanding the health and diseases

Explanation:

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  • Evolutionary theory gives an idea of the heritable and morphological changes in the organism.
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2 years ago
How can the biogeochemical cycle help a ecosystem
san4es73 [151]

It influences the rates at which organisms grow and reproduce.

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2 years ago
Your lab group is experimenting with the diffusion of molecules across a membrane. Dialysis tubing is used as a model cell membr
Margaret [11]

Answer: the membrane channel

Explanation:

In passive diffusion, the small water molecules can move across the phospholipid bilayer seen in blue. This layer acts as a semi-permeable or selectively permeable membrane; its hydrophilic heads are attracted to water (seen facing outwards) while its water-repellent hydrophobic tails face towards each other- allowing  molecules of water to diffuse across the membrane along the concentration gradient.

Thus the water will move from an area of high concentration  to an area of low concentration, until the system reaches a steady state called equilibrium- after this, there will be no net movement of water. Similarly via osmosis, the water passes through the membrane due to the difference in osmotic pressure on either side of the phospholipid bilayer this means that the water moves from regions of high osmotic pressure/concentration to regions of low pressure/ concentration to a steady state.

The dialysis tubing mimics a semi permeable membrane; it only allows water and small molecules of iodine to cross into the bag containing starch. The tubing is impermeable to starch;  these large molecules require the aid of protein omplexes called membrane channels, in order to move across the membrane and against the concentration gradient.

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3 years ago
Escherichia coli is a prokaryotic bacterium. How will Escherichia coli reproduce?
docker41 [41]
Binary fission.......
5 0
3 years ago
Read 2 more answers
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