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Blababa [14]
3 years ago
12

Extracts of the rosy periwinkle, Catharanthus roseus, have provided medicine with vincristine and vinblastine, drugs now availab

le for treating cancer. What human action promotes the ability to find this species of plant and discover its potential use for medicines?
Biology
1 answer:
lions [1.4K]3 years ago
6 0

Answer:

Biodiversity conservation

Explanation:

<em>Biodiversity conservation means the protection of different species of organisms present around the world due to their potentials to be a source of drug, food, industrial materials or other important human use.</em>

Several important species that could have been a source of food or other important materials have gone extinct either naturally or due to direct/indirect human actions.

Assuming rosy periwinkle has gone extinct, there is no way its extract would have been discovered to be a good treatment for cancer.

<em>Hence, biodiversity conservation or preservation are efforts put in place to preserve organisms that will serve as our future heritage.</em>

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22. Why are nitrogenous bases so important?
Sedbober [7]

Answer:A set of five nitrogenous bases is used in the construction of nucleotides, which in turn build up the nucleic acids like DNA and RNA. These bases are crucially important because the sequencing of them in DNA and RNA is the way information is stored.

3 0
3 years ago
Please help!!
Nikitich [7]

Answer:

1. d.water comes "out of" or "exits" the reaction

2. a.energy goes "into" or "enters" the reaction

3. Path A

Explanation:

1) Peptide bond synthesis is dehydration reaction which means water is "dehydrated" meaning released when the reaction occurs.

2) Anytime we want to join things together we gotta use energy, these processes are anabolic reactions such as making sugars, proteins, lipids, in our cell. Since we are making protein here, we need to put energy into the reaction.

3) Path A is hydrophobic b/c they directly diffuse thru cell membrane to attach to intracellular receptor.

My best attempt, hope its right.

3 0
2 years ago
Which statement below correctly explains and gives the importance of the endosymbiotic theory?
mr_godi [17]

Answer:

The statement that best explains the endosymbiotic theory is that the inner and outer membrane of the mitochondria indicates these were once free living organisms which were taken into an early cell via endocytosis. The theory was further supported by the fact that mitochondria have their own DNA and replicate via binary fission (option B).

Explanation:

The endosymbiotic theory is due to the evolutionary biologist Lynn Margulies, who through his postulates tried to establish evidence of the origin of eukaryotic cells, by incorporating a prokaryotic cell into the interior of others.

Mitochondria -besides chloroplasts- are one of the examples that support the endosymbiotic theory.  Both mitochondria and chloroplasts have characteristics and behavior similar to that of a bacterium (prokaryote):

  • They have their own circular double-stranded DNA.
  • They have 70S ribosomes.
  • Protein synthesis capacity.
  • They have membranes that allow them to carry out their functions.
  • Their division is carried out by binary fission.

These characteristics support that some organelles were at some time independent prokaryotic cells that were incorporated into other cells, by endocytosis.

Learn more:

Importance of endosymbiotic theory brainly.com/question/583859

6 0
3 years ago
Read 2 more answers
he population of Japanese sika deer in central Japan was determined each year from 2005 to 2014. The sika deer population underw
vekshin1

Answer:

The population would grow to 63,667 deer in a year, and the growth rate would decrease the following year.

Explanation:

Sika deer population : starting at 26000 in 2005

                                     stabilized at 58000 between 2012 and 2014

                                      rmax = 0.57

The population size of Sika deer be one year after the carrying capacity increased to 70000 as a result of deforestation

carrying capacity (k) = 70000

population size ( N ) = 58000

max growth(rmax) = 0.57

To determine the growth

dN/dt = rmax N [ (K-N) / K ]  ---------- (1)

insert the given value into the formula above

dN / dt = 0.57 * 58000 [ 12000 / 70000 ]

           = 33060 [12000 / 70000 ]

           = 5667

The increase in population = 5667 + 58000 = 63667

7 0
3 years ago
Which two of the following form the base pairs in DNA?
andriy [413]

Answer:  These 2 are called the double helix made up of sugar and phosphate groups. Attached to each sugar is one of four bases--adenine, cytosine, guanine, and thymine.

3 0
3 years ago
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