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3 years ago

The number of different species in an area is a measure of biodiversity True or False?

Biology

2 answers:

EleoNora [17]3 years ago

7 0

Simplest measurement- The number of different species.. True

shtirl [24]3 years ago

4 0

Answer:

False

Explanation:

The number of different species accounts for SPECIES DIVERSITY. The term biodiversity is a more complex term that should include not only the number of species diversity, but the genetic diversity and the ecosystem diversity of that area.

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How could fish-eating birds land on rocky islands be important in the formation of a new community of living things?

maks197457 [2]

Answer:

they would provide nutrients for new living things to feed on.

Explanation:

Fish eating birds would need important in the formation of a new community of living things because as they feed on these fishes on the rocks, they would also be eliminating wastes. The wastes that are being eliminated would serve as a source of nutrient on the Island. With time there would be enough nutrients for plants to tart growing

7 0

2 years ago

Design an experiment to answer the question, what is the effect of caffeine on the rate of mitosis in frog eggs? Label: hypothes

s2008m [1.1K]

Answer:

Explanation:

Null Hypothesis: Their will be no effect of the caffeine on the mitosis.

Hypothesis: Caffeine will inhibit the SHSY5Y cell division.

Dependent variable: Various concentration of the caffein compound.

Independent Variable: temperatures of the experimental condition. If their will be any effect of the temperature in mitosis then it will also affect the mitosis of control cells.

Experimental design.

Culture SHSY5Y neuronal cell line in the T-75 culture flask in CO2 incubator at 37 degree celsius. Next day, add cells from T-75 flask in the 24 well plate and allow cells to adhere to the well by incubating plate in CO2 incubator at 37 degree celsius. Add the compound caffeine at different concentration (say 1 microgram, 2 microgram, 3 microgram, 4 microgram) and incubate the plate for 24 hour. Determine the mitotic cells by following assay.

Assay to determine mitotic cell.

The reagent succinimidyl ester of carboxyfluorescein diacetate (CFSE) binds to cytoplasmic proteins. it is fluroscent reagent. And when cell divide due to mitosis, cytoplasm will also divide and hence, the protein which stained with the CFSE reagent will also goes in the daughter cell. Then, the fluorescence of the stained cells can be read on the plate reader.

Prepare the graph of the fluorescence values (Y-axis) verses different concentrations of the caffein (X-axis) and determine the slop of curve to know the rate of mitosis.

Following test and control samples will be used for the assay.

1. SHSY5Y cell line with added caffeine. It is test sample.

2. SHSY5Y cell line added with buffer. This important to know behaviour of cells under experimental conditions.

3. SHSY5Y cell line with solvent used to dissolve compound caffeine. It is important to know the toxicity or any effect of solvent on the mitosis.

5 0

3 years ago

Paul is studying a certain species of algae. The algae is unicellular, eukaryotic, and autotrophic. In the Linnaean system, the

zalisa [80]

Answer: C. The species is classified in a clade that does not include all protists.

The Kingdom Protists involves organisms which are simple in structure and functions. Some of these organisms have characteristics common to both plants and animals. A clade represents a group of organisms that have all characteristics common to their ancestor. The example of algea given here, has characteristics which are found mainly in plants belongs to Kingdom Plantea. Therefore, the clade of these Protists can be related with those of plants but cannot be related to Protists which exhibit animal like characteristics.

Therefore, species is classified in a clade that does not include all Protists.

5 0

3 years ago

The half life of an element is 14 years how many years old The rock will be after two half-lives

alexandr402 [8]

The rock will be 28 after two half lives

3 0

3 years ago

All nonnative species in an ecosystem are considered invasive species.

Masteriza [31]

Answer:

The statement is false.

Explanation:

I actually had this question on a test, and I got it wrong when I put true.

3 0

3 years ago

Read 2 more answers