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Thepotemich [5.8K]
2 years ago
11

Explain how structure of cell wall in xylem tissue enables it to be strong and flexible?

Biology
1 answer:
Drupady [299]2 years ago
8 0
The walls of xylem cells are lignified (strengthened with a substance called lignin ). This allows the xylem to withstand pressure changes as water moves through the plant.

The cell membrane is flexible because of the presence of oil like substances called phospholipids, which gives it a fluid nature. While as the cell walls are rigid because of the presence of the thick layers of the substances like cellulose in plants, chitin in fungi and peptidoglycon in bacteria.
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What is the difference between the terms organ and organ system? ​
astra-53 [7]

Answer:

Organ is a unit/group of tissues (structurally) that performs a basic function while organ system is a group of various organs that together helps in certain biological processes (must for one's survival).

7 0
3 years ago
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A student is investigating how substrate concentration affects the rate of anenzyme-catalyzed reaction. Which ​threevariables​ s
ohaa [14]

Answer:

A. temperature of the reaction

B. amount of enzyme

E. pH of the reaction

Explanation:

Temperature should be kept constant because enzymes operate at different activity rates depending on the temperature. The same goes for the pH as well with different enzymes having different optimal pH levels.

The amount of enzyme should be kept constant as well because different concentrations of enzymes can determine how fast the reaction will occur.

Essentially anything that could affect enzyme activity apart from substrate concentration should be kept constant.

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3 years ago
Which explains how the economic situation in chile in 1980 affected its government? chile’s improving economy led to the governm
liq [111]

The economic situation best describe by Chile’s worsening economy led to the government being overthrown by a military junta.

<h3>What is the economic history of Chile?</h3>

The economic condition of Chile changed over time.

Due to a worldwide recession, the GDP of Chile dropped to 14.1 in 1980.

The value of the currency is overvalued.

Due to the Asian crisis, in 1997 economic growth depletion started.

Thus, the correct option is C.

Learn more about  Chile

brainly.com/question/14215140

5 0
2 years ago
Which statements about tsunamis are true?
frosja888 [35]
Tsunamis can only occur in water. 
6 0
3 years ago
Suppose that two true breeding pea plants are crossed. one of the pea plants always produces yellow pea pods and the other alway
Oksi-84 [34.3K]

Answer:

100%

Explanation:

In this problem, we have one gene (pea color) with two possible alleles (green and yellow).

Green is dominant over yellow, so the possible genotypes and phenotypes are:

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  • gg = yellow pea pods.

If an individual is true breeding it is homozygous for all genes under study.

The cross between true breeding plants is:

<h3>GG x gg</h3><h3 />

The green parent (GG) can only produce <em>G </em>gametes; the yellow parent (gg) can only produce<em> g</em> gametes. 100% of the offspring will have the genotype Gg (green).

7 0
3 years ago
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