Answer:
If a DNA molecule has 30% Adenine the percentage of the other bases is Thymine: 30% Cytosine: 20% Guanine: 20%.
Explanation:
When the percentage that a base has in a DNA molecule is given, the percentage of the other bases can be known using the Chargaff's base pair rule.
A DNA molecule has the information of the genome of a living being, according to a specific sequence of its nitrogenous bases adenine, guanine, cytosine and thymine.
Chargaff was able to establish that in a DNA molecule the ratio of purine : pyrimidine of 1:1, so there must be the same amount of thymine as adenine and a similar amount of guanine for the cytosine, taking into account the complementarity of bases.
Taking into account the law of the base pair, if in a DNA chain there is 30% of Adenine, in the molecule there is:
Adenine 30%. Thymine 30%. Cytosine 20%. Guanine 20%. Total ..... 100%In this case, the Chargaff rule is useful to determine the percentage of nitrogenous bases that exist in a DNA molecule, knowing the percentage of a single base.
14. Write a flow chart for any one type of fermentation, starting from Glucose -------- to
lactic acid or alcohol and CO2.Mention in between steps.
Answer:
In lactic acid fermentation: Glucose --> pyruvate--> lactic acid
Explanation:
Some organisms produce their own chemical energy supply, or they may ingest organic substances like glucose and absorb energy. Such species may produce energy provided by producers.
Without the presence of oxygen, they break down chemical energy from glucose by lactic acid fermentation in their cytoplasm.
Within Glycolysis:
In order to break up glucose into 2 molecules of pyruvate, 4 ATP and 2 electrons holding NADH molecules, 2 molecules of ATP are used. Since 2 ATPs are used, this process generates a net 2ATP.Then...
Pyruvate is then converted to lactic acid, forming 2 NAD+s, which are used as electron carriers.How does the movement of the constellations provide evidence of earth’s rotation and revolution?
Answer:
Explanation:
How do the motions of the constellations provide evidence that Earth both rotates on its axis and revolves around the sun? The constellations seem to move in a circle around a fixed point each night. .Earth's revolution around the sun causes the constellations to seem to move..
After 8 hours of sleep and before eating, which hormone will be secreted and what cells secreted it?
Answer:
a.
Explanation:
After 8 hours of sleep and before eating the hormone that will be secreted is and the cell secreting it is : (A) I and IV i.e. Insulin and Beta cells
After waking up from 8 hours of sleep the body might become hungry therefore before eating and just after sleeping for a long time the hormone that will be secreted is the "hunger " hormone known as the Ghrelin which is produced in the stomach.
Ghrelin hormones modulates the secretion of insulin and Insulin receptor signalling in the beta cells of the pancreas. Therefore the hormone that will be secreted after long sleep and before eating is Insulin.
Hence we can conclude from the table attached that After 8 hours of sleep and before eating the hormone that will be secreted is and the cell secreting it is : (A) I and IV i.e. Insulin and Beta cells .
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needles frighten janice. as she awaits a flu shot, janice's nervous system is probably going into overdrive. please choose the correct answer from the following choices, and then select the submit answer button. answer choices sensory sympathetic parasympathetic somatic
Needles frighten Janice as she awaits a flu shot, Janice's sympathetic nervous system is probably going into overdrive and is denoted as option B.
What is Sympathetic nervous system?
This refers to the part of the nervous system which increases when an individual is stressed or in the danger of something. It is also referred to as the nerves that help the body to activate its “fight-or-flight” response.
The fear of needle by Janice which frightens him activates the flight response which is why sympathetic nervous system was chosen as the most appropriate choice in this type of scenario.
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In the most general terms, the study of sensation and perception is called psychophysics, a term that was first coined by ________.
In the most general terms, the study of sensation and perception is called psychophysics, a term that was first coined by Gustav Theodor Fechner.
In the field of science, psychophysics can easily be described as a combination of stimulus and sensation as these two terms are often considered to be one, but are different. The branch of psychophysics combines the branch of psychology with the branch of physics.
The term 'psychophysics' first came forward by Gustav Theodor Fechner. He was a well-established person in the field of psychology as well as physics. The reason behind bringing the concept of psychophysics, according to Fecher was that the relation between stimuli and sensation needs to be understood.
Over time, the complex ways in which the mind of a person, and its perception relates to the stimuli are studied under the complex branch of psychophysics.
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3. How is this process similar to runners and tubers?
Answer: Runers horizontal stems egg srawberry or spider plants. Tubers underground food stores
Explanation: it's right
A sound wave passes from air into water and then into steel. With each change in medium, what happens to the speed of the wave?
A
It increases, then decreases.
B
It increases.
C
It decreases.
D
It decreases, then increases.
Answer: YOUR ANSWER IS C- DECREASES
Explanation:
A P E X
4. What do eukaryotes use cell division for? Mark all that apply.
Growth
Sending messages
Reproduction
Development
Answer:
Development, Growth, Reproduction
Darwin's finches are an example of:
A Biochemical similarities
B Homologous structures
C Geographical distribution
D Mimicry
NEED HELP ASAP
When the process of mitosis is correctly completed, the daughter cells should contain exact copies of all of an organism's genes. Which biomolecule contains all of an organism's genes?
Answer: nucleic acids
Explanation:
What is a species of bacteria in your body that helps protect you?
From the passage:
Human Microbiome: The Role Of Microbes in Human Health
Answer:
Bacillus Subtillis
Explanation:
There are many, many types of bacteria that protect us. But for me, the main one would be Bacillus Subtillis. Its found on our skin, and it uses poison to fight off other microbes. In alot of cases, this bacetria can be found in a ton of antibiotics.
Which statement is true about the types of chemical element in living cells? (Question)
(Answer Choices)
A. Animal cells and plant cells contain very different elements.
B. All cells contain the same key elements, Such as carbon, nitrogen, and oxygen
C. Single-cell organisms have different types of elements from multi cell organisms.
D. Very few cells contain either carbon or oxygen.
Answer:
B. All cells contain the same key elements, Such as carbon, nitrogen, and oxygen
Answer:
B
Explanation:
All cells are mainly made from the same 4 elements, also the other answers dont fit
By which process are fossil fuels formed
O burning
• photosynthesis
O decomposition
cellular respiration
PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ HELPPPPPPPPPPPPPPPPPPPP MEEEEEEEEEEEEEEEEEEEEEEEEE PLZZZ IF YOU DO I GIVE YOU BRAINLIEST I DO ANYTHING JUST PLZ HELPPPPP (127 POINTS)
Write your scientific argument here to support one of the claims above. Be sure to follow the format discussed in the lesson: Claim + Evidence + Reasoning. Include at least two pieces of evidence and two key concepts for reasoning
ITS ABOUT TITAN LAKE
HERE A EXPLAME
I think that the lake CHOSSE EITHER froze/evaporated. One piece of evidence to support this is (evidence from cards) . Another piece of evidence to support this is (evidence from cards). This is because (include key concepts).
Answer:
A claim that answers the question and the Evidence from students’ data and the Reasoning is that it involves a rule or scientific principle that describes why the evidence supports the claim
Explanation:
Answer:
2nd picture the lake on titan was evaporated, it evaporated because at that time titan was going through summer.
HELP NEEDED ASAP!!!!!
Answer:
blank #1= cretaceous period of the mesozoic era
blank #2= cambrian period of the paleozoic era
blank #3= We are currently living the Quaternary Period or the Cenozoic era. There was no mass extinction event that ended the Tertiary Period and started the Quaternary Period / Cenozoic era. Instead, the division between the two periods is somewhat ambiguous and often argued by scientists.
I tried my best but I can't figure out the chart part, sorry :/
PLEASE HELP!!
1. a
2. b
3. c
4. d
5. e
6. f
7. g
8. h
small intestine -
large intestine -
Liver -
esophagus -
stomach -
gall bladder -
mouth -
pancreas -
hey i need bio help asap will give crown
A.) Deoxyribose sugar
B.) phosphate group
C.) Nitrogen base
which term is used to describe an animal's ability to survive if the cells are exposed to a hypotonic or hypertonic environment?
The term osmoregulation is used to describe an animal cell's ability to survive if in a hypotonic or hypertonic environment.
What is a hypotonic environment? A solution whose concentration is less than that of another solution is called as hypotonic solution. If a cell placed in a hypotonic solution, then water enters into the cell by the process of endosmosis and the cell becomes turgid or swollen. What is a hypertonic environment? A solution whose concentration is more than that of the another solution is called as hypertonic solution. If a cell placed in a hypertonic solution, water comes out of the cell by the process of exosmosis and the cell becomes flaccid or shrinks up. What is osmoregulation? It is a process which helps in regulating the osmotic pressure and the fluid-electrolytic balance in a cell.Osmo-receptors can detect changes in the osmotic pressure. Warm-blooded organisms and humans have their osmo-receptors in the hypothalamus. Osmo-regulators are also found in kidney.Hence, the correct answer is osmoregulation.
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A man with type AB blood is married to a woman with type O blood. They have two natural children, and one adopted child. The children's blood types are: A, B, and O. Which child was adopted?
The adopted child will have a type O blood group despite the fact that the mother has type O, the father will pass on an A or a B allele to the children. These are dominant alleles.
What are blood groups?Blood groups are divided into four categories: A, B, AB, and O. The presence or absence of two antigens on the surface of red blood cells determines each one.
A and B are the names of these antigens. Type A blood is defined by the presence of antigen A on red blood cells. Type B blood is defined by the presence of antigen B on red blood cells. You have type AB blood if both antigens (A and B) are present on your red blood cells.
And if neither antigen (A or B) is present on your red blood cells, you have type O blood.
Thus, we can conclude that the adopted child blood group will be O.
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can you die from getting stabbed in the head.
Answer:
yes you indeed can
Explanation:
Four groups of students plan scientific investigations to answer four questions for the science fair. Which question would most likely be answered with an experimental investigation? 1 2 3 4
Answer:
the answer is 3
Explanation:
have a great day!
three question would most likely be answered with an scientific investigation
What is scientific investigation ?Scientific investigation is the process of scientific inquiry and the discovery of the objects can be can be things, events, processes, causes, and properties as well as theories and hypotheses and their features.
It can promote the emergence of technologies with the advances that allow new ideas, systems and machines to be created. The scientific knowledge used to develop new technologies, solve practical problems, and make informed decisions both individually and collectively.
The results of Scientific investigation can be useful, the process of science is intertwined with those applications like New scientific knowledge may be applied in new applications
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select the correct text in the passage
a. the object orbits a white dwarf star
b. the object also appears to have 6 moons of its own
c.current images show that object is a rectangular in shape
d.it has slowed orbital. Orbiting it stars every 480 days
Explanation:
d . it has slowed orbiting it star every 480 days..
is answer
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What makes stem cells so important in medical research
Answer: Pretty much every aspect of them
Explanation:
Stem cells have unique regenerative abilities which can be used for treating diseases and disabilities (from diabetes to MS). They can also be used to graph skin from burns etc. The stem cell science world seems to leave so many options open for discoveries and they have less negative side effects in comparison to the chemical treatments available or soon to become available. Stem cells can heal rather than pharma therapies covering the ailment and leading to other issues.
Which of the following does NOT indicate a chemical reaction occurred?
A
A gas being produced
B
A solid being formed
C
A change in temperature
D
Temperature staying the same
Answer:
D Temperature Staying The Same
Explanation: Some indicators of a chemical reaction occured are a solid being formed, a flame being formed, a temepature change, a gas being formed, a change in color ect. Temperature staying the same is not one.
1. B= Brown eyes b= blue eyes Mom= Bb Dad= BB What percentage of their children will have Brown eyes and what percentage will have blue eyes?
% of Brown eyes-
% of Blue eyes-
The law of ____________ states that traits are passed from parents to offspring independently of one another.
Answer:
The law of independant assortment
Explanation:
:)
Answer:
independent assortment
Explanation:
Advantage of genetic connections
Disadvantages of genetic connections
Answer:
Advantage
Explanation:
- ups
TIMER !!!!
If a cell that is composed of 60% water is placed in a solution that is 90% water, that means that the cell is ______% solute while the solution is ____% solute.
If a cell that is composed of 60% water is placed in a solution that is 90% water, that means that the cell is 40% solute while the solution is 10% solute.
The calculation can be made by the formula using,
Solute + Solvent = Solution
Solute- A substance that dissolves in a solution is referred to as a solute. In fluid solutions, the solvent content is greater than the quantity of solute.
Solvent- A material that can dissolve solutes, that are molecules and compounds, is referred to as a solvent.
Solution- The majority of life's chemistry takes place in aqueous solutions, or mixtures in which water acts as the solvent. A solution is a homogenous mixture of a solvent and a solute.
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gene essentiality profiling reveals gene networks and synthetic lethal interactions with oncogenic ras
There are several genetic variations among human malignancies. Here, we catalogue this variability and make use of it to find gene connections that function and cancer-related risks that are genotype-dependent. We create a gene essentiality dataset across 14 human acute myeloid leukaemia (AML) cell lines using genome-wide CRISPR-based screens.
What is a gene ?The term "gene" has a variety of meanings in biology. The molecular gene is a sequence of nucleotides in DNA that is transcribed to form a functional RNA, whereas the Mendelian gene is the fundamental unit of inheritance.
Protein-coding genes and noncoding genes are the two different categories of molecular genes. While type III genes are involved in cell-to-cell signalling and type II genes are a complicated combination of all three types, type I genes often function as immune response or sensory receptors.Learn more about Gene here:
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A plate moving at a rate of 4 cm is moving toward a plate that is 10,000 km away. In how many years will the plates
collide?
year
O 250 million years
0 2,500 years
O 25 thousand years
O 250,000 years
Answer:250 million years
Explanation:
Answer: a. 250 million years
Explanation: