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nexus9112 [7]
3 years ago
12

True or False: All living organisms have cell membranes.

Biology
1 answer:
Goshia [24]3 years ago
8 0

Answer:

Yes ,each  living cell possess a cell membrane,which has a

semi-permeable barrier for various foreign particles.

Explanation:

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9. a) How does hydrogen bonding help the transport of water in plants?
grigory [225]

Answer:

Water has a high Cohesion because of Hydrogen bonding. This is important as transport of water in the Xylem in plants relies on water being pulled up. Cohesion also gives the water a high surface tension, allowing small organisms, such as Pond Skaters, to walk along it.

Explanation:

Water molecules forming hydrogen bonds with one another. The partial negative charge on the O of one molecule can form a hydrogen bond with the partial positive charge on the hydrogens of other molecules. Water molecules are also attracted to other polar molecules and to ions.

Plants obtain the hydrogen they need from water molecules. Don't try to feed your plant hydrogen gas -- your plant wouldn't know what to do with it if you did. As long as they have water, plants can readily obtain all the hydrogen they need. :)

6 0
3 years ago
In the lungs, there are tiny sacs called alveoli. Gas exchange will need
Ierofanga [76]

When air is inhaled, oxygen diffuses from the alveoli into the blood to be used for respiration by the body’s cells. Carbon dioxide is a waste product made by the body’s cells during respiration.

5 0
3 years ago
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The film defines species as populations whose members don't interbreed. what keeps different galápagos finch species from mating
abruzzese [7]

Galapagos species are among those populations whose members do not interbreed. The reasons that keep them from mating is that they are separated due to differences in songs and beaks, individuals only recognize and respond to songs of their own species. Therefore, geographic isolation and different environments led to changes in traits that affected mating.

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5 0
3 years ago
What was shown by both Redi’s and Pasteur’s experiments?
yan [13]
I shows that living things can only come from living things. 
4 0
3 years ago
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A normal chromosome and its homolog carrying an inversion are given. The dot (•) represents the centromere. Normal: M N • O P Q
AlladinOne [14]

Answer:

Pericentric, inversion loop.

Explanation:

Chromosomal inversion may be defined as the rearrangement of chromosome that may get reversed and attached. Two main types of inversion are pericentric inversion and paracentric inversion.

The pericentric inversion involves the inversion of chromsome and centromere is involved in this inversion. M Q P O • N R S T , in this case centromere is present and shows the pericentric inversion. The structure that forms during the synapsis is known as inversion loop.

Thus, the answer is pericentric, inversion loop.

7 0
3 years ago
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