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4 years ago

Are all types of bacteria harmful? Explain. The Science Duo

Biology

1 answer:

vichka [17]4 years ago

4 0

Answer:

Explanation:

There are muliple types of bacteria that helps the human body there are also bacterias that help fish and other animals.

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How does an organism become a species?

nika2105 [10]

A male and female of the same type reproducing makes a species?

4 0

4 years ago

A new microorganism is isolated from a lake and is placed into a solution of KCl. The voltage difference across its membrane is

Leona [35]

Answer: $\Delta U=$ 1.922x10⁻²⁰ Joules

Explanation: Electric Potential Energy (U) is the energy a charged object has due to its location in an electric field and it will only exist with the object is charged.

Voltage or Electric Potential Difference (V) is external work done to move a charge from one point to another in a electric field.

These terms have a relationship, which is given by:

$\Delta U=q\Delta V$

where

q is the charge

Proton is positive and has a charge of 1.6x10⁻¹⁹C.

Unit for potential energy is Joule (J). The relation between mV and J is

1mV = 10⁻³J

Then:

V = 120x10⁻³

V = 0.12

So, for a proton to move from the negative side of a membrane to the positive:

$\Delta U=q\Delta V$

$\Delta U=1.6.10^{-19}.0.12$

$\Delta U$ = 1.922 x 10⁻²⁰

Energy necessary to transport a proton from negative side of the membrane to the positive is 1.922 x 10⁻²⁰J.

4 0

3 years ago

How many objects must be present in a system to demonstrate gravity as a force of attraction?

Ierofanga [76]

Answer:

Explanation:

Knowing the value of G allows us to calculate the force of gravitational attraction between any two objects of known mass and known separation distance. As a first example, consider the following problem.

3 0

3 years ago

Classical biotechnology methods include _____.

LenKa [72]

Classical Biotechnology methods include: Selective Breeding, hybridization, and induced mutations, and recombinant DNA.

5 0

4 years ago

What is the role of primase is the process of bacterial dna replication? g?

DiKsa [7]

Primase is the enzyme that synthesizes small fragments of RNA in the strand lagging in DNA replication. The primase does not need a primer to synthesize and the RNA residues are removed by DNA polymerase I, due to their exonuclease capacity and filled with DNA fragments also by DNA Pol I. Finally, all these discontinuous DNA segments are linked by a ligase.

8 0

3 years ago