When using a compound light microscope the most common reason for staining a specimen being observed is to?

How would you compare the distance of the moon from earth and the distance of the sun from earth

love history [14]

One of them is smaller, because the moon is much closer to earth than the sun.

Think of the moon orbiting the earth as a smaller version of the earth orbiting the sun.

8 0

3 years ago

Assume a population of deer has a crude birth rate of 36 per 1,000/yr, a crude death rate of 20 per 1,000/yr, an immigration rat

jeka57 [31]

Answer:

0.023%

Explanation:

The Population growth rate is a change in population with time taken into consideration. It can be expressed with the formula

$N/t$ where N is the total change in the population size, and t is time.

When immigration and emigration are factored in, we now have the formula;

$(CBR +I) - (CDR + I)/1000$

$= (36 + 15) - (20 + 8) = 51 - 28= 23\\\\expressing as a percentage of the population gives us,\\\\23/1000=0.023%\\\\$

8 0

3 years ago

What's the difference between Igneous rocks and Metamorphic rocks?

defon

Answer:

Igneous rocks are formed when magma (or molten rocks) have cooled down and solidified. Sedimentary rocks are formed by the accumulation of other eroded substances, while Metamorphic rocks are formed when rocks change their original shape and form due to intense heat or pressure

hope this helps

Explanation:

6 0

3 years ago

Cam plants have adapted to arid environments by closing their stomata during the day. however, photosynthesis still occurs. this

Anton [14]

The correct answer is <span>CO2 is fixed at night when the stomata are open</span>

3 0

3 years ago

An experiment was performed to study the progress of cells through the mitotic cell cycle. The compounds listed below were used

Hatshy [7]

<h2>Mitotic Cell Cycle</h2>

Explanation:

a. Cytochalasin: an inhibitor of actin microfilament

Cytokinesis is the process by which cytoplasm is divided into two cells hence generation of two daughter cells
In animal cells the division of cytoplasm starts with the assembly of contractile ring
Contractile band consists of actin and myosin and catalyze cleavage furrow formation
Cytochalasin is a drug that blocks the polymerization of actin filament
When cytochalasin is added dividing cell fails to undergo in cytokinesis due to defective assembly of contractile band

b. Colchicine: an inhibitor of microtubule formation

Colchicine tightly binds with free tubulin dimer and prevents its polymerization
In this case mitotic spindle apparatus do not assemble and cells unable to do partitioning of chromosomes into two groups
Thus cell division is arrested

c. Aphidicolin: an inhibitor of DNA Polymerase activity

Aphidicolin is used to induce cell cycle arrest via specific inhibition of DNA Polymerase α
It blocks the cell cycle at early synthesis(S) phase

d. Emetine: an inhibitor of ribosome activity

It blocks the protein synthesis in eukaryotic cells by binding to small subunit(40 S) of ribosomes
It interferes with the synthesis and activities of DNA and RNA

5 0

3 years ago