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3 years ago

What is the significance of secondary growth in plants?

2 answers:

4 0

The correct answer is A.
Secondary growth in plants allows many woody and non woody plants to grow tall and strong. The growth basically occurs in the roots and the stems and it is controlled by lateral meristem. Examples of non woody plants that undergo secondary growth include: carrot, potato, tuber, etc.<span />

Tanya [424]3 years ago

4 0

The growth starts from the roots and them to other parts. So the significance of secondary growth in plants is To support the extra weight of the tree due to an increase in its height and to prevent it from collapsing. So the answer to your question is letter A.

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What is the role of RNA in protein production

Marina86 [1]

Answer:

Ribosomal RNA (rRNA) associates with a set of proteins to form ribosomes. These complex structures, which physically move along an mRNA molecule, catalyze the assembly of amino acids into protein chains. They also bind tRNAs and various accessory molecules necessary for protein synthesis.

Explanation:

7 0

3 years ago

A grad student has a culture of E. coli with a total volume of 1,800 mL, and OD reading at 550 nm of 1.7. He transfers 1 mL cult

Naily [24]

Answer:

Explanation:

We'll represent the dilution as the volume transferred/total volume in the tube after transfer. So for the first dilution, 1 ml of culture was added into 9ml of broth bringing the total volume to 10 ml i.e 1/10

For the second dilution, 0.1 mL was added to 0.9mL of broth bringing the total volume to 1mL i.e 0.1/1.0 (this is also the same as 1/10). In relation to the stock culture, this is represented as 1/100 (that is 1/10 (first dilution) * 1/10 (second dilution)

Giving that the same was done for dilution 3 and 4,

third dilution is represented as: 1/10 and the fourth as 1/10 as well

In relation to the stock, dilution 3 is 1/1000

dilution 4 is 1/10000

a. the dilution in the third tube is $\frac{1}{1000} = 10^{3$ or 1.0* $10^{3}$

b. the dilution spread onto the agar plate is the fourth dilution, that is, $\frac{1}{10000} = 10^{4}$ or $1.0*10^{4}$

c. Since the grad student got 386CFU/0.2mL (200 uL = 0.2mL),

the cells in 1mL is: 386/0.2 = 1930 = 1.93 * $10^{3}$

the cells in 1800mL is therefore 1930*1800 = 3,474,000 = 3.4*10 $10^{6}$

3 0

3 years ago

what is the relationship between temperature and altitude in the stratosphere? as altitude increases, temperature decreases. as

nata0808 [166]

Generally, temperature increases. as altitude increases ! <span>However, the temperature increases with altitude in some layers. This is called an inversion. Inversions can appear at any altitude in the troposphere.

(NOTE: its Troposphere not Stratosphere)</span>

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3 years ago

Is 300ml of water and 100ml sugar mixed have a volume of 400ml?

Andre45 [30]

Answer:

Explanation:

Once sugar added to water tend to dissolve and their effect in volume of solution tend to be low so can be neglected

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3 years ago

Punnett Squares can predict the ___________ of human genetic traits, especially useful for genetic disorders.

maks197457 [2]

Answer:

The Punnett square is a square diagram that is used to predict the genotypes of a particular cross or breeding experiment. The diagram is used by biologists to determine the probability of an offspring having a particular genotype.

Explanation:

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3 years ago

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