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2 years ago

Why should you lower the stage all the way down after using a microscope?

Biology

2 answers:

Leya [2.2K]2 years ago

6 0

Answer:

Reducing the amount of light improves contrast, making the specimen "stand out" against the background. Some microscopes have an annular condenser, which is a plate under the stage that can be rotated. The plate consists of holes of different diameter.

Explanation:

Pavel [41]2 years ago

4 0

Answer:

So whenever you put the slide in it won't touch the lens

Explanation:

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When the double stranded DNA helix is unwound, two single strands of DNA are formed. These strands have to be stabilized because

Pie

Answer:

single-strand DNA-binding protein

Explanation:

Based on the scenario being described within the question it can be said that these proteins are known as single-strand DNA-binding protein. They are protein mainly in the E. Coli bacteria, and bind to single-straded regions of DNA. They are a main functional part of everything related to DNA metabolism such as replication, recombination, and repair.

7 0

3 years ago

Where are stem cells harvested from? Name 2 places.

Nina [5.8K]

You have the bone marrow and the circulating blood

6 0

3 years ago

In an experiment, a certain colony of bacteria initially has a population of 50,000. A reading is taken every 2 hours, and at th

Iteru [2.4K]

Answer:

1) Recursive definition: $p_n = (50,000)3^n$

2) At the beginning of the 4th interval

Explanation:

The initial population of the bacteria at time zero is

$p_0 = 50,000$

Here we are told that the reading is taken every two hours; we call this time interval "n", so

$n=2 h$

And also, after every time interval n, the number of bacteria has tripled.

This means that when n = 1,

$p_1 = 3 p_0$

And when n=2,

$p_2 = 3 p_1 = 3(3p_0)=9 p_0$

Applied recursively, we get

$p_n = 3^n p_0$

And substituting p0,

$p_n = (50,000)3^n$ (1)

Here we want to find at the beginning of which interval there are

$p=1,350,000$

bacteria.

This means that we can rewrite eq.(1) as

$1,350,000=(50,000)3^n$

By simplifying,

$27=3^n$

Which means that

$n=3$

However, this means that the number of bacteria is 1,350,000 after 3 time intervals; therefore, at the beginning of the 4th interval.

8 0

3 years ago

How can a person prepare his or her body for an adventure to an extreme environment?

Ksivusya [100]

<span>The person can prepare by eating the right food, exercise, hydration of self and condition oneself for the incoming adventure like extreme. And also the human body systems respond to changes in the external environment, the nervous system and hormones enable us to respond to external changes. </span>

6 0

3 years ago

Read 2 more answers

Red blood cell will swell and burst when placed in which of the following kinds of solution

Ivan

<span>Red blood cell will swell and burst when placed in "Hypertonic Solution"

Hope this helps!</span>

3 0

3 years ago