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Svetlanka [38]
3 years ago
13

Which term describes a pure substance that is made up of only one type of atom?

Biology
1 answer:
Alborosie3 years ago
6 0
Element. an element is when a substance only contains one type of atom. compound is made of 2 or more
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The rate at which the concentration of a drug in the bloodstream decreases is proportional to the concentration at any time t. I
Westkost [7]

Answer:

C(t) = C_oe^{-kt}

Explanation:

From the given information:

At any given time (t), let c(t) represent the concentration of the drug present in bloodstream.

Deriving the equation:

\dfrac{dC}{dt} decrease proportionally to Concentration C

i.e

\dfrac{dc}{dt} \alpha - C

\dfrac{dc}{dt} = -k C

\dfrac{dc}{c} = -k dt

\int \dfrac{dc}{c} = -k \int dt

㏑(C) = -kt + λ

where,

λ is the integration constant.

Integrating at t = 0, concentration of blood = Co g/mL

C(0) = Co

㏑(C₀) = 0 + λ

λ = ㏑(C₀)

From ㏑(C) = -kt + λ

㏑(C) = -kt + ㏑C₀

㏑(C)  - ㏑C₀ =  -kt

\dfrac{C}{C_o} = e^{-kt}

C(t) = C_oe^{-kt}

∴

The concentration of drug in blood at any time t is:

C(t) = C_oe^{-kt}

4 0
3 years ago
Phenotype refers to an organism's as what?
Klio2033 [76]
Phenotype refers to the observable traits an organism has. An example is blue eyes, black hair.
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3 years ago
Choose all the answers that apply.
patriot [66]
Is caused by vibration, can travel through a vacum, and travels in longitudinal waves<span />
5 0
3 years ago
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Which sentence is correct? All cells have the same genes, but different genes are active in different cells. Lungs look differen
mihalych1998 [28]

<u>Answer:</u>

All cells have same genes, but different genes are active in different cells

<u>Explanation:</u>

       Most living organisms are made up of different kinds of cells specialize in performing various functions like nerve cells perform different functions than blood cells. But all the cells are composed of same set of genetic information.

Since biochemical function is found out mainly by some specific enzymes, different sets of genes must be turned on and off in the various cell types to perform different functions. This is how cells differentiate for different functional capabilities.

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What 4 things are attached to the center carbon in an amino acid?
Alinara [238K]

The carbon attached to the alpha carboxyl and the alpha amino group is known as the alpha carbon. 2. All amino acids except glycine have four different groups attached to the alpha carbon. As a result, all amino acids have at least one asymmetric center (the alpha carbon).

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