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4 years ago

URGENT!!

Biology

2 answers:

Masteriza [31]4 years ago

8 0

Answer: Human beings can see only a small fraction of the wavelengths that make up the electromagnetic spectrum.

Explanation: Photons reflected by pigments in leaves are used by leaves to carry out photosynthesis is not true as the photons are absorbed as a source of energy by the pigments to carry out the process of photosynthesis.

Human beings can see only a small fraction of the wavelengths that make up the electromagnetic spectrum is true as only visible light is visible to human beings.

Photons are units of light that travel from the sun to leaves in the same way that particles travel through space is not true as photons travel from the sun to leaves by radiation in the form of electromagnetic waves and do not require any medium but particles require medium to travel.

The wavelengths that make up the electromagnetic spectrum each have the same amount of energy is not true as the electromagnetic radiations have different wavelengths and thus have different energies.

$E=\frac{hc}{\lambda}$

Flauer [41]4 years ago

4 0

Human beings can only see a small fraction of the wavelengths that make up the electromagnetic spectrum. <em>;)</em>

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Enzymes are biological catalysts which speed up biochemical reactions.

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3 years ago

What does nitrogen fixation accomplish?

alexgriva [62]

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A. It allows plants to use nitrogen to grow.

Explanation:

However, plants can't directly use nitrogen to grow. The bacteria need to convert atmospheric nitrogen ( N2 gas) into a form that plants can use.

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3 years ago

DNA replication of chromosomal DNA in a cell requires all of the following, EXCEPT A) DNA polymerase B) primase C) helicase D) R

Viktor [21]

Answer:

The correct answer is D)RNA polymerase

Explanation:

In DNA replication many enzymes and proteins are required to replicate a DNA template. For initiation of DNA synthesis the two DNA strands must be separated which is done by helicase.

Then primase adds short nucleotide sequence and initiate DNA replication. After that DNA polymerase acts and adds nucleotide at the 3' end of growing DNA strand. Ligase is the enzyme that joins the two Okazaki fragments that are created in the lagging strand.

RNA polymerase is not required in DNA replication and it works in transcription therefore the correct answer is RNA polymerase.

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3 years ago

Read 2 more answers

The difference in concentration on the two sides of a membrane is called what

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When the concentration o molecules inside a cell is different form the concentration of molecules outside a cell, we can either call it hypertonic or a hypotonic solution, and the difference between the two concentrations is called a concentration gradient.

Hypertonic - name given to a solution that has a bigger concentration than the concentration in a cell.

Hypotonic - name give nto a solution that has a smaller concentration than the concentration in a cell.

Hope it helped,

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3 years ago

What happens when telomeres on the end of chromosomes become reduced in length

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When the telomere becomes too short, the chromosome reaches a 'critical length' and can no longer be replicated.

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