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
Elena-2011 [213]
3 years ago
5

Circle the letter of each sentence that is true about water's structure

Biology
1 answer:
Fiesta28 [93]3 years ago
5 0
Can u take a pic of the questions?
You might be interested in
Hunt and her team designed an experiment to test her hypothesis about the effect of BPA on mice. They administered daily doses o
katovenus [111]

Answer and Explanation: The figure below shows the doses of BPA administered to the female mice over time.

An experiment is used to determine cause and effect among variables. When the research is for the impact of a treatment, researchers randomly separate individuals in two groups:

  • <em><u>Control</u></em> <em><u>Group</u></em> doesn't receive any treament or a placebo or a treatment whose outcome is already known;
  • <em><u>Treatment</u></em> <em><u>Group</u></em> receives the treatment;

For the female mice on the image below, in the First Group is not injected any dosage of BPA, so they are the control group, while the <u>others</u> are <u>treatment group</u>.

The variables in a experiment are classified as independents or dependents:

  • <em><u>Independent</u></em> <em><u>Variable</u></em> is the cause;
  • <em><u>Dependent</u></em> <em><u>Variable</u></em> is the effect;

For the BPA research, since it is the effect of BPA over time on the mice's cells it is being investigated, <u>dosage</u> of BPA is the <u>independent</u> variable and <em>time</em> is the <em>dependent</em> variable.

6 0
3 years ago
Which of the following do Meiosis and Mitosis have in common? A. They are considered to be reduction divisions as the processes
LUCKY_DIMON [66]
I think the best answer from the choices listed above is option A. Meiosis and Mitosis have something in common in a sense that they are considered to be reduction divisions as the processes result in additional <span>cells. Hope this answers the question.</span>
5 0
3 years ago
Read 2 more answers
What is homologous series?
PIT_PIT [208]
It is a series of compounds especially organic compounds with the same general formula or functional group that differ by - CH₂ with similar properties.
6 0
3 years ago
Cystathioninuria can be caused by two different mutations in the enzyme cystathionase. Cystathioninuria caused by mutation 1 can
polet [3.4K]

Answer:

C. The enzyme with mutation 1 has decreased affinity for pyridoxal phosphate, whereas the enzyme with mutation 2 has lost the ability to bind to the substrates.

Explanation:

A coenzyme is an organic cofactor that binds with an enzyme in order to initiate or aid the function of the enzyme. A coenzyme binds to the active site of the enzyme (where the reaction occurs), thereby triggering its activation by modifying protein structure during the reaction. Some examples of coenzymes include Coenzyme A and Adenosine triphosphate (ATP). Pyridoxal phosphate is a coenzyme (it is the active form of vitamin B6) that is required for the function of cystathionase. Moreover, cystathionase is an enzyme that enables cells the synthesis of cysteine from methionine (transsulfuration pathway). The binding of pyridoxal phosphate to the enzyme increases the binding affinity of the enzyme for the substrate, thereby influencing its activity. In this case, it is expected that mutation 1 reduces the binding affinity of the enzyme to the cofactor, and thereby the cofactor is required at a higher concentration to restore normal enzyme activity.

3 0
3 years ago
What causes genetic variation to be preserved or eliminated and how does that effect evolution
AfilCa [17]

Answer:

Mutation. Mutations are changes to an organism's DNA and are an important driver of diversity in populations. Species evolve because of the accumulation of mutations that occur over time. ... Some mutations are unfavorable or harmful and are quickly eliminated from the population by natural selection.

3 0
3 years ago
Read 2 more answers
Other questions:
  • Fossils of an animal called Ichthyostega shows that it had lungs and legs. It also had teeth and a tail similar to those of fish
    10·1 answer
  • What is the name of the molecule that decreases activation energy?
    9·1 answer
  • A change in the frequency of alleles in a gene pool can be explained by all of the following except?
    15·2 answers
  • Natural selection can affect the diversity of organisms within a population. This can sometimes be seen through the distribution
    11·1 answer
  • Gymnosperms typically reproduce by _____________ pollination. A) animal B) insect C) water D) wind
    12·1 answer
  • 1. How many food chains make up the food web?
    13·1 answer
  • What might happen to the food web below if the number of phytoplankton drastically decreased? The small fish and wading birds wo
    12·2 answers
  • Humans have __ chromosomes in the nucleus of every cell in our bodys
    11·1 answer
  • What is the name of this commonly used scientific tool?
    5·2 answers
  • Describe Photosynthesis including where it occurs, what happens, and what types of organisms use it.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!