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xeze [42]
3 years ago
11

Does a cell use energy when molecules diffuse in or out of the cell? Why?

Biology
1 answer:
sweet [91]3 years ago
7 0

Answer:

There are two major ways that molecules can be moved across a membrane, and the distinction has to do with whether or not cell energy is used. Passive mechanisms like diffusion use no energy, while active transport requires energy to get done.

Explanation:

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If a germ cell with 38 chromosomes undergoes meiosis, how many chromosomes will the resulting cells have?
lorasvet [3.4K]
I think it is 19 but I am not sure because I know mitosis had 2 times the amount as meiosis
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3 years ago
3. While walking in the forest floor, you found an organism that has the following characteristics: had the consistency and appe
Leviafan [203]

Answer:

What are stinkhorns?  Stinkhorns are mushrooms that are found from the tropics to more temperate regions such as Wisconsin.  They can suddenly appear in mulch, lawns, and areas with bare soil.  These visually-shocking fungi get their common name from their characteristic, unpleasant odor.  Although they are often unwanted additions to home gardens, stinkhorns do not cause plant disease.  Because stinkhorns can grow on dead organic material, they actually are beneficial in that they contribute to the recycling of plant debris into nutrients that improve soil fertility and can be used by garden plants.

What do stinkhorns look like?  Stinkhorns grow into various shapes, but they are bestknown for looking like horns or penises.  A few species grow several appendages, resulting in an octopus-like appearance.  Some species have a veil attached below the cap that resembles a lacey skirt flowing from the mushroom’s hollow stalk.  Stinkhorns can range in color from white, beige, and olive to bright orange or red with black accents.  The tips of mature stinkhorns are usually coated in a spore-containing slime.  Gardeners often discover immature stinkhorns as they dig in the soil.  The immature forms appear as whitish to pink or purple, egg-shaped masses.  Stinkhorns develop rapidly sometimes growing up to four to six inches per hour, and can generate enough force to break through asphalt.

Where do stinkhorns come from?  Stinkhorns are often first introduced into a garden in organic materials (e.g., soils and mulches) that contain microscopic hyphae (i.e., fungal threads) of stinkhorn fungi.  Once stinkhorns mature, they produce a pungent, off-putting odor that is reminiscent of rotting flesh or dung.  This smell may disgust people, but it attracts insects, particularly flies.  Flies and other insects eat the slimy material at the tips of stinkhorns and carry spores in this slime to new locations as they move around in the environment.  In many ways, this process is comparable to the distribution of pollen by bees (but of course without the more appealing scents associated with most flowers).

3 0
3 years ago
What effect do you expect the structural differences between prokaryotes and eukaryotes to have on their functions?
Shtirlitz [24]
The main difference between prokaryotes and eukaryotes is the presence of nucleus in eukaryotes and its absence in prokaryotes. Also, prokaryotes are unicellular, so one cell is a whole organism. On the other hand, eukaryotes are mainly multicellular, and thus more complex. More complex DNA is inside the nucleus in the eukaryotes which enables them to conduct a wider range of functions. Prokaryotes, as a single cell, have simple functions present.
8 0
4 years ago
Which of these is an example of Bioremediation?
Novay_Z [31]

Answer:

B. Bacteria are introduced to break down hydrocarbons in an oil spill.

5 0
3 years ago
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How is the reproduction of a scorpion different from a cockroach? plzzz answer fast.
SCORPION-xisa [38]

Answer:

Scorpions and pseudoscorpions are fairly closely related, but no more so than scorpions are related to spiders, ticks and mites. ... Like all arachnids, both pseudoscorpions and scorpions have eight legs each, and chelicerae, exoskeletons and pedipalps.

Explanation:

7 0
3 years ago
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