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
Ray Of Light [21]
3 years ago
7

An unknown mineral is scratched by a penny. It must _____

Biology
2 answers:
natulia [17]3 years ago
7 0
This is about Mohs Scale of mineral hardness.

At a 2 it can be scratched by a penny.

Gypsum is a mineral at this hardness.

Based on this info, it is either a 2 or a 1 on the scale.

So likely Gypsum or Talc.
damaskus [11]3 years ago
3 0
I think that it is softer than a diamond. As we all, a diamond is considered the hardest mineral and cannot be scratched by any kind penny.
You might be interested in
We see objects all around us because of which type of light
Paraphin [41]

Answer:

Reflected Light

Rays of light reflect, or bounce off objects around us.

4 0
3 years ago
Glucokinase and hexokinase in glycolysis
Delicious77 [7]
<h2>Answer:</h2>

Glucokinase or Hexokinase is a enzyme used at the first step of glycolysis.

<h2>Explanation:</h2>
  • Glucokinase is a Isoenzyme(enzymes which differs in the sequence of amino acids but catalyses the same reaction) of Hexokinase .
  • Glucokinase (hexokinase D) is present only in liver and pancreas whereas hexokinase is present in all cells.
  • In first step of glycolysis i.e formation of glucose-6-phosphate from glucose is completed with the help of hexokinase. In this step a ATP molecule is consumed i.e ATP is converted to ADP

Result: Glucokinase and hexokinase are used in the first step of glycolysis.

8 0
3 years ago
The enlightenment thinker that believed that people had a right to liberty was a man known as Voltaire. TRUE or False
stellarik [79]

Answer:

false

Explanation:

Voltaire was for rights of religion

6 0
3 years ago
Read 2 more answers
Allowing local people to collect fallen branches from trees in a protected forest is an example of the philosophy of ___________
NeTakaya

Answer:

a. recycling

Explanation:

3 0
2 years ago
What Citric acid cyrcle
andrey2020 [161]

Answer:

series of chemical reactions used by all aerobic organisms to generate energy through the oxidation of acetate

Explanation:

The citric acid cycle, also known as the Krebs cycle or the tricarboxylic acid cycle, is at the center of cellular metabolism, playing a starring role in both the process of energy production and biosynthesis. It finishes the sugar-breaking job started in glycolysis and fuels the production of ATP in the process.

4 0
2 years ago
Other questions:
  • Why is interphase the longest stage of the cell cycle?
    9·1 answer
  • -261.4°F<br>-164.3°C<br>what's the kelvin​
    15·1 answer
  • Missouri made the crinoid its official state fossil. Nicknamed the "sea lily," crinoids are actually formed by ancient sea anima
    12·1 answer
  • Assume you are working for a chemical company and are responsible for growing a yeast culture that produces ethanol. The yeasts
    8·1 answer
  • What would be 51 and 52?
    5·1 answer
  • I need help with #4<br> I have no Idea what it is or what I need to do
    11·1 answer
  • PLEASE HELP .............
    15·1 answer
  • Which <br> of the following waves would u expect to have the most energy
    7·1 answer
  • PLEASE HELP ASAP!!!!
    5·1 answer
  • Stegosaurus and ankylosaurus are united in a group called
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!