22. Why do you think the sea urchin was chosen to test the effect of changes in pH?
Answer:
as it settles deeper underwater ph tends to be higher and a sea urchin tends to be more resilient to change
Acidic seawater, at current pH levels found in the world's oceans, can have a negative impact on sea urchin larval development so it is taken to test the effect of changes in pH.
What is sea urchin?Sea urchins are spiny, globular echinoderms of the Echinoidea class. The urchins were able to compensate for internal pH in modest acidification (pH 7.8) and not in higher acidification (pH 7.6).
The pH of coelomic fluid was lower at higher temperatures.
Thus, due to this, the sea urchin was chosen to test the effect of changes in pH.
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what is natural selection?
true or false: Galaxies formed straight away after the big bang
Answer:
False
Explanation:
How did science play a role in diagnosing the water problem in Flint
Answer:
Explanation:
by desolving it
A cross between 2 phenotypically 'wild-type' individuals produces 9 wild type offspring for every 3 of one mutant phenotype and 4 of another mutant phenotype. What is the likeliest explanation for this?
Answer:
Recessive epistasis Interaction
Explanation:
Due to technical problems, you will find the complete explanation in the attached files
Please hurry it’s timed
Answer:
B) Nucleotide
Answer:
Nucleotide
Explanation:
The entire thing is called a nucleotide, the other answers are parts of a nucleotide.
Complete a Punnett square that shows a test cross for a tall pea plant (RR x rr). Place the plant to be tested at the top of the Punnett Square.
Answer:
Rr, Rr, Rr, Rr.
the pea will be heterogeneous.
Explanation:
I am pretty sure
A 4 kg cannonball is accelerated through the barrel of a cannon with an acceleration of 725 m/s2. What force must have been applied to the bullet?
Answer:
2900N...........
Explanation:
f=ma
f=4×725
f=2900N
A broken bone can heal itself in a few weeks
Asexual reproduction
Sexual reproduction
Answer:
Asexual reproduction
Explanation:
It is Asexual reproduction. Because of miosis and mitosis, the bone can heal by itself after a few weeks.
Which statement correctly describes blood sugar monitoring in diabetics?
Type II diabetics do not need to monitor their blood sugar.
Type I diabetics should monitor their blood sugar at least three times a day.
Gestational diabetics should monitor the blood sugar at least three times a day.
All diabetics need to monitor their blood sugar after every meal.
Answer:
Answer is 2
Explanation:
Type 1 diabetics should monitor their blood sugar at least three times a day, correctly describes blood sugar monitoring in diabetics.
I hope it's helpful!
Answer:
C)Type I diabetics should monitor their blood sugar at least three times a day.
Explanation:
Help me please it’s biology
Answer:
the last one
Explanation:
Answer:
I'm pretty sure it's a virus
Explanation:
Viruses are non-living, therefore they are abiotic
Complete the flowchart to summarize cellular respiration.
Answer:
Explanation:
K
Explain how genetic variation and environmental factors contribute to natural selection
Explanation:
Increasing genetic variation and the environmental effects on that variation form the basis for natural selection. A species with a great deal of genetic variability is more likely to survive as a species in a changing environment than a species with limited variability.
In humans which of these types of cells generally do not divide after they have developed?
- skin cells
- cells of the lining of the digestive tract
- cells in the bone marrow that generate blood cells
- muscle cells and nerve cells
Muscle cells and nerve cell
Pls help me thx alot
Answer:
I want to say Disruptive.
Explanation:
please tell me if wrong! hope this helps!
Construct an argument. Do you believe it's ethical or unethical to artificially select traits in plants and or animals? Provide evidenco to suoport your claims. It doesn't matter what side you chose, but I need it asap.I will give you any mark you want.
Answer:
I believe its ethical to artificially select traits in plants.
Explanation:
This is my opinion
Answer:
I believe its ethical to artificially select traits in plants.
Explanation:
my opinion
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Based on the diagram above, how is isoleucine inhibiting the function of threonine deaminase (Enzyme 1)?
According to the diagram, when will this enzyme begin to function again and make more isoleucine?
Answer:
b evrensel cevap geçiş ocmc.cc,c,
Explanation:
enzim olmasi lazi, hakikatten ya
An increased cardiac output will provide more oxygen and more glucose to the working muscles.
Explain how this helps the athlete during exercise.
Prokaryotic does not have...
A.) life
B.) cell membrane
C.) DNA or RNA
D.)membrane bound
F.)organelles
they have no internal membrane bound organelles
Imagine that you are a scientist who has discovered a new object. You want to find out if the object is biotic or abiotic. You observe several characteristics about the new object. Which of these characteristics would tell you that the object is abiotic, or not alive?(1 point)
The object cannot create energy.
The object has a crystalline structure.
The object can mutate.
The object responds to stimuli.
Answer:
the answer is the object cannot create energy
Explanation:
i just got it right on my quick check
The characteristic that would tell if an object is abiotic or nonliving is if the object cannot create energy.
The capacity to create energy for the normal functioning of the body is one of the key characteristics of living organisms. This energy is usually gotten from the breakdown of food materials through a process known as respiration.
Respiration could be in the presence (aerobic) or absence (anaerobic) of oxygen but the ultimate end is to generate energy, usually in the form of ATP, for metabolism.
Thus, any object that lacks the capacity to carry out respiration cannot be considered to be living or biotic.
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Starch and glycogen are types of this macromolecule.
a. carbohydrate.
b. nucleic acid.
c. lipid.
d. protein.
The shape of North Carolina's Twelfth Congressional District, shown above, is most likely the result of - (A) watershed boundaries B) gerrymandering (C) county boundaries (D) decentralization (E) amalgamation
Answer:B gerrymandering
Explanation:i had this on a test
The majority of states give the state legislature main power over the process of drawing congressional and state legislative districts. Thus, option B is correct.
What gerrymandering shaped North Carolina's?The admittance of Dakota Territory as two states rather than one is a remarkable example. Regardless of its population, each new state carried a minimum of three electoral votes under the standards for representation in the Electoral College.
On February 11, 1812, the first “gerrymander” was sketched on a map and made official. The redistricting plan was approved by Elbridge Gerry, the governor of Massachusetts at the time, in order to maintain his party's hold on power in the forthcoming election.
Therefore, gerrymandering shape of North Carolina's Twelfth Congressional District.
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How does a Covalent Bond Form? ( No goo.gle ik the goo.gle answer cause i tryed looking it up if you put tht answer u wont get brainliest)
Answer:
A covalent bond forms when the difference between the electronegativities of two atoms is too small for an electron transfer to occur to form ions. Shared electrons located in the space between the two nuclei are called bonding electrons. The bonded pair is the “glue” that holds the atoms together in molecular units.
Answer:
A covalent bond forms when the difference between the electronegativities of two atoms is too small for an electron transfer to occur to form ions. Shared electrons located in the space between the two nuclei are called bonding electrons. The bonded pair is the “glue” that holds the atoms together in molecular units.
Explanation:
Scientists are now studying human DNA in labs all over the world. Which are current goals for the scientists at these labs? Select three answers that apply. A. completing a full sequence of human DNA (the Human Genome Project) B. identifying the regions of human DNA that are transcribed into RNA C. identifying the regions of human DNA that bind to proteins D. analyzing the regions of human DNA that vary among individuals E. describing the molecular structure of human DNA
Answer:
B. identifying the regions of human DNA that are transcribed into RNA
C. identifying the regions of human DNA that bind to proteins
D. analyzing the regions of human DNA that vary among individuals
Explanation:
The double helix structure of the deoxyribonucleic acid (DNA) molecule was characterized and published in April 1953 by Francis Crick and James Watson. Moreover, the Human Genome Project was a project aimed at completing mapping and sequencing of the human genome. This project was completed and published in April 2003. Nowadays, scientists are focused on identifying which genes are expressed (i.e., transcribed into RNA) in specific cell types/tissues. For this purpose, it is imperative 1-to identify the promoter and enhancer regions that bind to specific proteins (transcription factors) in order to activate gene expression, and 2-to understand how genetic variation is related to gene expression patterns in specific cell types and/or in response to specific environmental stimuli.
please help, will give brainliest
Answer:
contraction and relaxation of the heart
Explanation:
What element has 1 valence electrons and 4 energy levels?
Answer:
Hydrogen and helium, both in the first period, have their valence electrons in the principal energy level n=1
Explanation:
Answer:
Hydrogen and Helium
Explanation:
please help! i’m confused
Answer:
Mitosis is used to produce daughter cells that are genetically identical to the parent cells. The cell copies - or 'replicates' - its chromosomes, and then splits the copied chromosomes equally to make sure that each daughter cell has a full set.
Explanation:
When something rust,
Answer:
It gets heavier
Explanation:
The mass of iron increases as rusting happens when oxygen combines with iron therefore the mass increases.
Answer:
It gets heavier
Explanation:
The mass of iron increases as rusting happens when oxygen combines with iron therefore the mass increases.
Cystic Fibrosis is an autosomal recessive disease. A carrier male is married to a carrier female. What is the chance they will have a child with cystic fibrosis?
Answer:
If only one of you is found to be a carrier, the chance that you will have a child with CF is very low, although not completely eliminated. If you are both carriers, each pregnancy will have a 1 in 4, or 25 percent chance of being affected with cystic fibrosis.
Explanation:
hope this is helpful