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eduard
3 years ago
11

A typical ecosystem like the one pictured here might have 200,000 caterpillars, 10,000 frogs, 500 snakes, and 35 owls. Why do yo

u think there are fewer and fewer organisms at each level of the food chain?
Biology
1 answer:
dimulka [17.4K]3 years ago
6 0
Because the lower levels of the food chain have the most energy so more organisms can be sustained, but as you go up the food chain, less and less energy is transferred so less organisms can survive
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Biological membranes are selectively permeable, allowing certain molecules to cross the membrane, but not others. Sort the molec
Anuta_ua [19.1K]
Passive transport:

For simple diffusion = fatty acids, amino acids, steroid hormones (because they’re non-polar)

Facilitated diffusion = N2 and Cl-
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3 years ago
How would an inhibitor of cAMP phosphodiesterase affect glucose mobilization in muscle? It would increase cAMP levels, which wou
dedylja [7]

Answer:It would maintain high cAMP levels and elevate glucose mobilization.

Explanation:

Gas stimulates adenylate cyclase, leading to the generation

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5 0
3 years ago
Where was BSE first detected in the mid 1980’s?
kompoz [17]

When was BSE first discovered?

BSE first appeared in British cattle in the mid-1980s. There have been numerous cases detected in other countries. A complete list of countries is available from both the U.S. Food and Drug Administration (FDA) and the U.S. Department of Agriculture (USDA).

3 0
3 years ago
In mitosis, when do the sister chromatids align with centrosomes in the cells?
USPshnik [31]

Answer:

The answer is probably B. Metaphase

Explanation:

In mitosis, the sister chromatids align in the "center" of the cell as the centrosomes are at the poles of the cell. They do this, moving on to the next phase Anaphase - where they will eventually split. Interphase isn't part of mitosis - it describes the period in which the cell is just growing and copying DNA.  If you textbook says it is, then thats ok, sometimes its included as part of it (even though technically its not).      

4 0
3 years ago
Read 2 more answers
I got 2 and 4 wrong on my quiz and failed? These were the same exact questions. I don't know why...
scZoUnD [109]

Answer:

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3 0
2 years ago
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