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
dexar [7]
3 years ago
13

What must be added to the plate before examination of amylase production?

Biology
1 answer:
yanalaym [24]3 years ago
4 0

Gram's iodine reagent must be added to the plate before examination of amylase production.

Explanation:

The starch hydrolysis test is conducted to test the presence of the enzyme amylase in the test medium.

These are confirmatory lab tests done to detect and identify the presence of bacteria which can hydrolyze starch like amylose with the help of enzymes like amylase.

The test medium for this test is agar medium in a petri dish, where soluble starch is first added to initiate the microbial growth. Once incubation period of the microbes is over, dilute iodine solution is added to the petri dish in increased quantity. Iodine is a dye which helps to clearly identify the areas which are hydrolyzed by amylase and those which are not with the help of its color.

You might be interested in
What are 2 ways in which gametes differ from somatic cells?
tatuchka [14]
Gametes are the cells in human body used for reproduction, such as sperms or eggs, and somatic cells are the other body cells, such as muscle cells, skin cells and all other.

First, they have different number of chromosomes. Gametes have only one set of chromosomes, while somatic cells have a complete 2 set of chromosomes. This is because fertilization requires 2 gametes joining together and this will help maintain the correct amount of chromosomes at last.

Second difference between them is that gametes are products of meiosis, while somatic cells are products from mitosis. Both are types of cell divisions but meiosis produces 4 genetically different cells while mitosis produces 2 genetically indentical daughter cells.
8 0
3 years ago
Suppose you have monohybrid flowers in your garden and find that they produce black seeds to brown seeds in the ratio of 3:1. If
Dvinal [7]
Hybrid = having one recessive and one dominant allele
This means that all of the flowers must have the genotype Bb.
Knowing this, let's make a Punnet Square.

\begin{tabular}{ l c } & B \ \ \ \ b\\ B & \boxed{BB}\boxed{Bb} \\ b & \boxed{Bb\ }\boxed{\ bb} \\ \end{tabular}

As you can see, 3 of these are going to have the dominant trait and 1 is going to have the recessive trait. This corresponds to our 3:1 in our question, meaning that the black seeds must be dominant and the brown ones recessive.

Because they are dominant, the genotype for black seeds could be BB <em /><em>or</em> Bb.
4 0
3 years ago
Read 2 more answers
Naturally occurring solid mixture of one or more minerals and organic matter
alina1380 [7]

The naturally occurring solid mixture of one or more minerals and organic matter is known as a Rock.

A rock is a naturally occurring substances that is a solid mixture of one or more minerals together with organic matter.

<h2>Further Explanation;</h2>
  • Rocks are classified based on the chemical composition, texture and the way they are formed.  One type of rock may change from one form to another through a rock cycle.
  • Rock cycle is the process through each various rocks change from one form to another, normally an interchange between the three major types of rocks.

There are three major classification of rocks:

<h3>Sedimentary rocks </h3>
  • Sedimentary rocks are types of rocks that are formed through accumulation of sediments at low temperatures in tectonic layers and sinks. These sediments includes; pebbles, shells, sand and other material fragments.  
  • The sediments accumulates in layers and then harden into rocks over a period of time.
  • Examples of sedimentary rocks include; limestone and conglomerate
<h3>Metamorphic rocks</h3>
  • These are types of rocks that are formed as a result of changes that occurs due to intense heat and pressure under the surface of the earth. They result from action of heat and pressure on other rocks that pre-existed.
  • These types of rocks are characterized by shiny crystals, ribbon-like layers among other features.
  • Examples of metamorphic rocks are marble and gneiss

<h3>Igneous rocks </h3>
  • These are types of rocks that are formed as a result hardening and cooling of magma from volcanic eruptions. Magma may cool inside the earth or when on the surface of the earth as a result of volcanic eruptions. The lava from this eruptions cools and hardens to form metamorphic rocks.
  • Igneous rocks are glass-like and shiny with no crystals. They may also have tiny spaces and holes due to gas bubbles trapped during the cooling process.
  • Examples of igneous rocks include obsidian and basalt.
  • The three types of rocks may be further classified in terms of chemical composition, texture and formation.

Key words: Rocks, types of rocks, chemical composition

<h3>Learn more about;</h3>
  1. Rocks and rock types; https://brainly.in/question/5987245
  2. sedimentary rocks; https://brainly.in/question/3259075
  3. igneous rocks; https://brainly.in/question/272012
  4. metamorphic rocks; https://brainly.in/question/1206219

Level; High school

Subject: Geography

Topic:  Rocks

sub-topic: classification of rocks

4 0
3 years ago
Digestive cells produce and secrete many enzymes that break down ingested food. these cells have a large number of ribosomes ___
tankabanditka [31]
The answer to this question would be: on the rough endoplasmic reticulum.

Digestive cell produces many enzymes which were made by protein. Endoplasmic reticulum has a role in protein synthesis. It is important to have many rough endoplasmic reticulum to accommodate the protein synthesis function so that the digestive organ can produce enough enzyme
3 0
3 years ago
Andrew is describing the water cycle in three steps, as shown in this simple model. Which statement belongs in the third region?
Makovka662 [10]

A water falls from the atmosphere as rain,ice,or snow called perticipation

Hope this helps

God bless you

Have a good day

-Kayla <3

4 0
3 years ago
Other questions:
  • according to the original central dogma, what macromolecule or phenomenon is directly responsible for an organism's phenotype?
    7·1 answer
  • What is the next step in the process after a substrate enters the active site of an enzyme?
    7·1 answer
  • The_variable is part of the experiment that is being tested or the part that is changed by the person doing the experiment (fill
    8·2 answers
  • I will mark you as brainlinest for correct answer!!!!!pleaseeeee help!!!!!!
    5·1 answer
  • Biology help please,<br> will reward/star u
    6·1 answer
  • Which part collects urine until it is expelled from the body?
    14·1 answer
  • This infectious viral disease has many symptoms, from chills, fever, and aching muscles to coughing and sneezing to nausea and v
    6·1 answer
  • What effect did the development metallurgy have on civilization?1.
    11·1 answer
  • The first animal to be domesticated was the<br> O dog.<br> O pig.<br> O horse.<br> O chicken.
    11·1 answer
  • HELP ME PLEASE ANSWER BOTH 13 and 14 is u can
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!