When a tautomeric shift occurs, then the resulting mutation ALWAYS changes a purine to a purine or a pyrimidine to a pyrimidine. A tautomeric shift may lead to a point mutation.
A mutation is any alteration in the nucleotide (DNA) sequence of the genome of an individual.
A tautomeric shift can be defined as a temporary change in the nucleotide base structure.
A transition mutation is a point mutation of one purine or pyrimidine base pair to the other purine/pyrimidine that occurs when one nucleotide base undergoes a tautomeric shift during DNA replication.
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Which of the following leaves the nucleus? (There may be only one answer or there may be
multiple)
No answer text provided.
TRNA
mRNA
DNA
Answer:
tRNA and mRNA can leave the nucleus.
Explanation:
tRNA, when mature and correct, can leave the nucleus and enter the cytoplasm. mRNA can leave the nucleus through pores in the nuclear membrane. However, DNA cannot leave the nucleus, it has to be transcribed into RNA.
Identify and define each of the basic science process skills
Answer:
Explanation:
Science process skills are the things that scientists do when they study and investigate. Observing, classifying, communicating, measuring, inferring and predicting are among the thinking skills used by scientists, teachers and students when doing science.
explain the correlation between solar radiation and kelp biomass.
Given what we know, we can confirm that although sunlight is beneficial to plant growth, intense solar radiation has been proven to be detrimental to the survival of kelp, thus reducing its biomass.
How does solar radiation affect kelp?Solar radiation is not harmful in very low amounts.
However, when exposed at long intervals or high intensity, it has been shown to cause tissue damage.
This tissue damage will inhibit the kelp's ability to undergo photosynthesis.
This means it will not be able to grow, and its biomass will be reduced.
Therefore, given the effect of solar radiation in damaging the kelp's ability to photosynthesize and thus reducing its growth, we can confirm that intense or prolonged exposure to solar radiation reduces kelp biomass.
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what are the 2 parts of the central nervous system
Answer:
brain and spinal cord.
Explanation:
The two parts of the central nervous system are the brain and the spinal cord.
Which cells can form ATP by breaking down glucose?
a
Prokaryotes only
b
Plants only
c
All cells
d
Animals only
Answer:
C.) All cells
Explanation:
because energy needs plants as well as animals including prokaryotic cell
When a dark blue fish and a light blue fish with dark blue fins were mated , all offspring became dark blue. What could also be seen was that part of the offspring got light gray fins.Explain with the help of genetics why all fish turn dark blue.
Answer:
The allele for dark blue fish must be dominant and the dark blue parent fish must be homo-zygous dominant;
This would mean the dominant allele would necessarily be inherited by all offspring and since it is dominant, it would be expressed over the other allele (light blue fish)
The network of connective tissue fibers which pass through the tissues of the body and allow for the efficient movement of immune system cells is the
Answer:
reticuloendothelial system
Explanation:
The reticuloendothelial system (RES) is a heterogeneous population of phagocytic cells in systemically fixed tissues that play an important role in the clearance of particles and soluble substances in the circulation and tissues, and forms part of the immune system.
Which of these is FALSE?
a
Cells use ATP for cell work
b
Breaking down glucose gives off energy
c
Breaking down ATP gives off energy
d
1 ATP has more energy than 1 glucose
Answer:
D is false
Explanation:
D is false because after breaking down 1 glucose, around 36-38 ATP will be produced from ADP
A is true because cells use ATP for work
B is true, as breaking glucose makes ATP, which is just stored energy
C is true too, since ATP is an ADP connected to a phosphate. This bond contains energy and detaching the phosphate will power parts of the cell, for instance active transport systems.
In which biome(s) are fawnsfoot mussels found??
Answer:
The fawnsfoot is found in the Mississippi drainage and the St. Lawrence
In DNA G pairs with C creating a __________ bond *
no
single
double
triple
Answer:
Triple
Explanation:
Because when guanine pairs with cytodine they form 3 hydrogen bonds
What type of food was discovered to make up the majority of the diet of human foragers (and, by extension, likely our ancient ancestors)
Plant foods such as nuts, fruits and roots was discovered to make up the majority of the diet of human foragers. Hominine ancestors depended on foraging.
Hominine ancestors (i.e., before the evolution of H. sapiens), depended on foraging for millions of years.
Foraging refers to the search for wild food resources, which are provided by nature by gathering different sources (e.g., plants, small animals, birds, insects, etc).
Nuts, fruits and roots represent excellent sources of food because they contain both macronutrients (lipids, proteins and carbohydrates) and micronutrients (i.e., minerals and vitamins).
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Caroline set up a fourth test tube that contained a leaf and was exposed to dim
light.
After two hours the colour of the indicator solution in this test tube remained orange.
Explain why.
(hydrogen carbonate indicator test)
Answer:
Answer
+ 5.0
Answer: The NEGATIVE CONTROL is the
test tube that is filled with ONLY distilled
water.
Explanation:
A negative control of an experiment is
carried out alongside the main primary
experiment except that the treatment is
changed to something that is predicted
to have no result. In the negative
control, the student does not expect any
response. This would help the student
compare the result of a new experiment
against an already known existing results.
Analysing the experiment carried out
by the student, She filled two test tubes
with distilled water and placed a piece
of Elodea in one of the tubes, leaving
the other without a plant. The other test
tube that contains only distilled water is
the negative control because she wasn't
expecting any result from it. It's also
served as a control sample to the primary
experiment. This is observed as she
blew in each tube to add carbon dioxide,
which caused the distilled water to
become more acidic. This would help the
student know that the that experimental
results are valid and to ensure that time is
saved
which abiotic factor starts the phosphorus cycle?
Answer:
Phosphorus moves in a cycle through rocks, water, soil and sediments and organisms. Over time, rain and weathering cause rocks to release phosphate ions and other minerals. This inorganic phosphate is then distributed in soils and water.
which is the only kind of bird that has no eyeballs?
I really need helppppp
Scientists are examining different sea floor structures like those in the model of the Earth's crust below.
The distance between X and Y represents thousands of kilometers of distance on Earth. The scientists notice that the rocks located at point X are older than the rocks located at point Y. What does this information about the age of the rocks indicate to the scientists?
A.
There is an underwater volcano producing new rock at point X.
B.
The sea floor is moving from Y to X over the course of millions of years.
C.
New rock is constantly covering old rock on the ocean floor.
D.
The sea floor is moving from X to Y over the course of millions of years.
Answer:
C.) The sea floor is moving from Y to X over the course of millions of years.
Explanation:
glycogen synthase is an enzyme important for making glycogen. in response to glucagon, glycogen synthase is
What types of cells perform photosynthesis?
a
All prokaryotic
b
All animals
c
All eukaryotic
d
All plants
Answer:
All plants
Explanation:
This is due to the presence of chorophlly . the green colouring pigment in plants
plssss mark brainliest
Spindle fibers begin to form.
Answer: Yes that is true but you gave basically NO information at all.
Explanation:
Answer:
yes that that that that Tish that that
help me please it's hard
Answer:
4. predator
5. prey
6. interspecific
Answer:
predator, prey, intraspecific
Explanation:
what does it mean for a bacteria or protist to be photosynthetic?
Photosynthetic protists such as the various types of algae contain plastids. These organelles serve as the site of photosynthesis (the process of harvesting sunlight to produce nutrients in the form of carbohydrates). The plastids of some protists are similar to those of plants.
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if you visit the beach on a hot summer day you will probably feel a Sea Breeze coming off the water onto the land. Which of the following causes this sea breeze?
A. The water is warmer than the land during the day.
B. Hurricanes that form in the oceans blow air into the shore.
C. During the day,solar radiation warms the land faster than the water.
D. Earth is tilted toward the Sun, causing air to move inland from the water
If I am correct, the answer is supposed to be C due to on hotter portions of the day, land warms much faster than the water. This causes cooler air to rise from the oceans and the wind currents then push the air towards the land.
How many chromosomes do all the body cells in your body have?
Answer:
it should be up to 46 in each and 23 pairs of chromosome s look it up
Explanation:
*wait* im correct i looked it up here so yeah please mark brainliest
Which of the following molecules are needed for photosynthesis?
a
carbon dioxide and oxygen
b
water and carbon dioxide
c
glucose and oxygen
d
light and oxygen
Answer:
A is correct.
Explanation:
Answer:
b is correct
Explanation:
b water and co2
What are three characteristics of alveolus? <3
what will happen if the relative humidity is 100 percent, and the temperature begins falling?
Answer:
It will start to rain.
Explanation:
what part of the brain is responsible for happiness
Explain why burning of candle is both reversible and irreversible change ?
when you burn a candle you can always take the melted wax once it resolidifies and make a new candle out of it, but it will never be the same candle
i hope this is helps at least a little :]
Most of the aerobic respiration of a cell takes place in which structure?
A chloroplast
B lysosome
C vacuole
D mitochondria
What is necessary for the process of active transport to occur
Answer:
THE use of energy (usually in the form of ATP) is necessary for the process of active transport to occur.
Energy in form of ATP is necessary for the process of active transport to occur.
WHAT IS ACTIVE TRANSPORT:Active transport is the type of transport that involves the movement of molecules with the aid of energy (ATP). Active transport uses energy to move molecules against a concentration gradient unlike passive transport.Therefore, this means that energy in form of ATP is necessary for the process of active transport to occur.
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