1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
andrey2020 [161]
3 years ago
12

How do we know if their is DNA in our food?

Chemistry
2 answers:
Phoenix [80]3 years ago
7 0
We know because of DNA testing in general.
elena-s [515]3 years ago
3 0
Yes. Because most our food comes from living things it has DNA in it.
You might be interested in
6) (a) Calculate the absorbance of the solution if its concentration is 0.0278 M and its molar extinction coefficient is 35.9 L/
Anvisha [2.4K]

Answer:

6) (a) 0.499; (b) 31.7 %

7) 0.15

Explanation:

6) (a) Absorbance

Beer's Law is

A = \epsilon cl\\A = \text{35.9 L&\cdot$mol$^{-1}$cm$^{-1}$} $\times$ 0.0278 mol$\cdot$L$^{-1} \times $ 0.5 cm = \mathbf{0.499}

(b) Percent transmission

A = \log {\left (\dfrac{1}{T}}\right)}\\\\\%T = 100T\\\\T = \dfrac{\%T}{100}\\\\\dfrac{1}{T} = \dfrac{100 }{\%T}\\\\A = \log \left(\dfrac{100 }{\%T} \right ) = 2 - \log \%T\\\\0.499 = 2 - \log \%T\\\\\log \%T = 2 - 0.499 = 1.501\\\\\%T = 10^{1.501} = \mathbf{31.7}

7) Absorbance

A = \log \left (\dfrac{I_{0}}{I} \right ) = \log \left (\dfrac{I_{0}}{0.70I_{0}} \right ) = \log \left (\dfrac{1}{0.70} \right ) = -\log(0.70) = \mathbf{0.15}}

8 0
3 years ago
Reversible reaction and examples on them
Tomtit [17]

Answer:

Here are three examples  

Explanation:

In a reversible reaction, the conversions of reactants to products and of products to reactants occur at the same time.

Example 1

The reaction of hydrogen and iodine to from hydrogen iodide.  

H₂ + I₂ ⇌ 2HI

Example 2

The dissociation of carbonic acid in water to form hydronium and hydrogen carbonate ions

H₂CO₃ + H₂O ⇌ H₃O⁺ + HCO₃⁻

Example 3

The dissociation of dinitrogen tetroxide to nitrogen dioxide.

N₂O₄ ⇌ 2NO₂

4 0
3 years ago
Which natural occurrence is shown ? Check all that apply.
viktelen [127]

Answer:

2. flooding

4. short-term change

Explanation:

just did the test

4 0
3 years ago
Read 2 more answers
A scientist evaluates its livestock and determines which livestock it is
Rina8888 [55]

Any animals look for steangth mostly because the offspring can probobly onther trait is looks. The male will try to impess the female.

4 0
3 years ago
What components of an endothermic reaction have a higher heat content
xxTIMURxx [149]
Endothermic reaction is the reaction in which the system absorbs energy. The system absorbs heat and cools the surroundings. Reactants are the substances that are involved in the reaction and at the end of the reaction product are formed. 
In the endothermic reaction because heat is absorbed , the products have a higher heat.
4 0
3 years ago
Other questions:
  • What are the structural features of purines and pyrimidines?
    5·1 answer
  • Chlorine gas (cl2) forms when two chlorine atoms share an electron. what type of bonding is present in chlorine gas?
    7·2 answers
  • Which statements accurately describe the polarity and electronegativity of water?
    13·1 answer
  • Which energy conversion must occur in an operating electrolytic cell?
    15·2 answers
  • What would the percentage of thorium-232 (parent compound) be in a rock that was dated at 2.8 billions years?
    9·1 answer
  • Which of these is common to all chemical changes?
    12·1 answer
  • What type of energy does a ball have when it rolls down a hill?
    9·1 answer
  • How many grams are in 657 L of N2 gas at STP?
    13·1 answer
  • The following image shows the Atomic level of an element. In the image, which of
    8·1 answer
  • 2)a dish contains a blackish-yellow powder.when a magnet is moved over it black particles iron get stuck to the magnet and only
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!