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SSSSS [86.1K]
3 years ago
10

An observation is _______.

Biology
2 answers:
liubo4ka [24]3 years ago
5 0

a possible explanation for events using prior knowledge   


leonid [27]3 years ago
4 0
A possible explanation for events using prior knowledge   
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The xylem generally transports _____, whereas the phloem transports _____.
kenny6666 [7]
The answers are "water and mineral ions" and "amino acids and sucrose" respectively.

For the xylem, it usually transports water and mineral ions that are absorbed from the root hair cells up to the leaves, where photosynthesis take place. Water is one of the necessary substance for photosynthesis to take place, while different mineral ions can help the plant by for example Magnesium ions can help produce chloroplast.

While phloem transports amino acid and sucrose from the location of production (eg. Leaves by photosynthesis) to the place where it is used or stored. Plant needs these substances to generate energy for activities such as growth by for example cellular respiration. This process is called translocation.

Both of these tubes help transport substances in the plant, in order to keep the plant alive.
3 0
3 years ago
You can digest starch but you cannot digest ce11u1οse. why?
lawyer [7]
<span>Cellulose is a lot stronger than starch. Starch is practically useless as a material, but celluose is strong enough to make fibers from, and hence rope, clothing, etc. Cellulose doesn't dissolve in water the way starch will, and doesn't break down as easily.
</span>Your body contains enzymes that break starch down into glucose to fuel your body. But we humans don't have enzymes that can break down cellulose.
8 0
2 years ago
3+z=-19 true, false, or open
nexus9112 [7]
The answer is false
8 0
2 years ago
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A scientist investigated DNA replication in two groups of cells, labeled A and B. She injected radioactively labeled nucleotides
victus00 [196]

Answer:d

Explanation:step by step explanation

4 0
3 years ago
Which of the following occurs when oxygen transfer from the blood to the body's cells and tissues?
Snowcat [4.5K]

Answer:

B. External respiration

Explanation:

Respiration means transport of oxygen to the cells within tissues, and the transport of carbon dioxide in the opposite direction.

5 0
3 years ago
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