answer.
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
MissTica
2 years ago
13

Which statement correctly describes a possible result if starch indicator is added to the water in the beaker one hour after the

potato cube was added
Biology
2 answers:
musickatia [10]2 years ago
7 0

Answer:

The starch indicator will take on a color between blue and black.

Explanation:

When you put a piece of potato in a glass of water, the starch in the potato will start to come out of the potato and stay in the water. After an hour it is likely that all of the potato starch is in the water.

When the starch comes in contact with the water in the cup, it starts to occupy the spaces between the water molecules, which means that we have a solution (starch + water), when the starch indicator is added to this solution, it reacts with the starch molecules and takes on a color between blue and black.

Lady bird [3.3K]2 years ago
5 0

Answer:

starch indicator will not change its color

Explanation:

if starch indicator is added to the water solution it will change its amber colour if starch is added in the water solution and vice versa.

You might be interested in
"the myelin sheath consists of a(n) ________."
stellarik [79]

The myelin sheath is consist of a cell called the glial cell. The glial cell is the one responsible for providing assistance in neurons as well as insulation of which will be in between of them. This type of cell is usually seen in the CNS and it has different types.

8 0
1 year ago
Which ingredients are needed to transform NADP+ to NADPH?
Gnesinka [82]

Answer: Two electrons and a hydrogen ion

Explanation: The light reactions use solar power to reduce NADP+ to NADPH by adding a pair of electrons along with a hydrogen nucleus, or H The light reactions also generate ATP by powering the addition of a phosphate group to ADP, a process called photophosphorylation.

6 0
1 year ago
Two autosomal genes, J and K, are 60 map units apart. You perform the following testcross: J K / j k x j k / j k. At what freque
Dmitry [639]

Answer:

  • J K / j k = 20%
  • j k / j k = 20%
  • J k / j k = 30%
  • j K / j k = 30%                

Explanation:

To calculate the recombination frequency, we have to know that 1% of recombinations = 1 map unit = 1cm. And that the maximum recombination frequency is always 50%.

The map unit is the distance between the pair of genes for which every 100 meiotic products, one of them results in a recombinant one.

So, en the exposed example:

  • J and K are autosomal genes
  • J and K are separated by 60 M.U.
  • 60 M.U. means that there is 60% of recombination.

Cross)             J K / j k                    x                  j k / j k

Gametes) JK  Parental                                     jk, jk, jk, jk

                jk   Parental                                  

                Jk   Recombinant                          

                 jK   Recombinant

One map unit equals 1% of recombination frequency. This means that every 100 meiotic products, one of them is a recombinant one.

1 M.U. -------------- 1% recombination

60 M.U. ------------ 60% recombination

                              30% Jk  +  30% jK

100 M.U. - 60 M.U. = 40 M.U.

40M.U.--------------40 % Parental (Not recombinant)

                            20% JK   +   20% jk

Punnet Square)           JK       jk      Jk      jK

                          jk     JK/jk   jk/jk   Jk/jk   jK/jk

J K / j k = 20%

j k / j k = 20%

J k / j k = 30%

j K / j k = 30%                                

3 0
1 year ago
Which of the following best explains why larger grapes have a different rate of water absorption per gram of mass than smaller g
tresset_1 [31]
B because it’s more accurate then others
5 0
1 year ago
1. metal moderate ability to conduct heat and electricity; solid at room temperature; reacts with other elements 2. nonmetal gas
vladimir1956 [14]
The question is not given. You just placed some statements. Apparently, here you have some definitions to pair with the type of elements. So, I will separate the statements as per my best understanding. If the question requires anything else tell me to give you more details.

<span>1. Metalloid

Metalloid is an element that has properties in between metals and non metals, this is metalloids have some properties of both.

Then you can pair it with --->  moderate ability to conduct heat and electricity

2. noble gas

The elements that are knwon by not reacting with other elements are noble gases.

Then, pair this with ---> will not react with other elements.

3. metal:

Metals are malleable, polishes to a luster and are good conductors of heat and electricity.

Then pair metal with ---> malleable, polishes to a luster; conducts heat and electricity well

4) non metal gaseous: non metal are poor conductors

So, pair this with ---> does not conduct heat or electricity well

Given that the question is no
</span>
7 0
1 year ago
Other questions:
  • Which enzyme is responsible for facilitating the hydrogen bonding between nucleotides in a new dna molecule ?
    10·2 answers
  • Helper t cells are activated by ________ on ___________ cells
    15·1 answer
  • Give three instantaneous scale (time) examples of Earth's systems, two long-term scale (time) examples of Earth's sytems, and th
    6·2 answers
  • Small secondary lymphoid organs, which cluster along lymphatic vessels, are termed ________.
    7·1 answer
  • Describe how temperatures above 35 C most likely affect the structure and function of the starch synthase in the particular stra
    12·1 answer
  • Egg membranes from three eggs were carefully taken out and labeled as a, b , c. Each of these membranes were filled with 1% solu
    12·1 answer
  • Streptomycin is an effective antibiotic because _____________.
    14·1 answer
  • Give two reasons why dna evidence analysis is an imperfect science
    14·1 answer
  • 26. Use arrows to connect the concept bubbles below, making a concept map. Be sure to label
    14·1 answer
  • Microtubules and microfilaments are elongated structures that cross the cell, giving support to the cell, and carries organelles
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!