Answer:
Chargaff's rules state that DNA from any species of any organism should have a 1:1 stoichiometric ratio of pyrimidine and purine bases and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine. This pattern is found in both strands of the DNA.
Which of the following best describes how meiosis helps maintain genetic variation?
A) meiosis replaces mutated genes with normal ones before creating new cells
B) meiosis exchanges genetic material between homologous chromosomes
C) meiosis produces new nuclear membranes before the second cell division
D) meiosis replicates chromosomes twice before the cells undergo cell division
I thought it would’ve been d but I guess not
Answer:
i believe its C
Explanation:
The number of chromosomes that result from mitosis is _____.
the same as original cell
double the original cell
half of the original cell
none of the above
Answer:
Hello! This answer would be the same as original cell!
Explanation:
I really hope this helps!
both fish seen here are african zebra cichlids they have two color alleles.
Answer:
what fishes are you talking about
What is the correct answer?
Answer: Answer is B
Explanation:
There are only three autosomal trisomic conditions (Patau, Edward, and Down Syndrome) where a fetus will survive to birth. Why do you think this is so?
Answer:
An autosomal trisomic condition is the deviation of the chromosome number where an extra copy of the chromosome present with the chromosome pair. The three trisomic conditions are Patau - extra copy at chromosome 13, Edward - extra copy of chromosome 18, and Down Syndrome - an extra copy of chromosome 21
Children or fetuses affected by these trisomies show the least life expectancy and develop as mentally week, other than these trisomies other trisomic conditions are highly lethal so we do not see the survivors and it is due to dosage sensitivity which means that increasing or decreasing their expression levels will reduce cell viability.
What are atoms? What particles are they composed of? What is relative location and charge of each particle?
Explanation:
an atom is the smallest chemical particle that exists
the are composed of 3 main things
protons
neutrons
electrons
protons and neutrons are located in the nucleus of the atomic structure( centre) and electrons are in shells out of the nucleus
protons are positive charged
electrons are negative charged
neutrons don't have a charge as their charge is too small and considered as nothing so 0
brainiest....Make up a humorous conservation law.
Answer:
Open season on dum dums (stupid people).
The DNA sequence that makes up the genetic code of an organism determine which traits the organism will exhibit
Answer:
How are the instructions coded by DNA translated into an organisms physical traits. They are translated into proteins which express an organism's physical traits. In DNA, the structure and size of the four nitrogen bases allows only for one kind of base to pair with one other kind. This is called the base-pairing rule.
Explanation:
which of the following correctly describes the induced fit process of how enzymes work
1.the substrate binds and the enzyme split apart prior to actiong on the substrate
2. the substrate binds and the substrate changes changes shape and then substrate is acted upon by the enzyme
3. the substrate binds and is immediatelyacted upon by the enzyme
4. the substrate binds and the enzymes changes shape and then the substrate is acted upon by the enzyme
Answer:
The correct answer would be number 2
Explanation:
The correct description of the induced fit process of how enzymes work is;
The substrate binds and the substrate changes shape and then substrate is acted upon by the enzyme ( 2 )In an Ideal fit model for catalysis, the substrate will bind to a site ( active ) and the substrate bond to the site will change its shape before been acted upon by the enzyme to form a complex ( enzyme- substrate ).
The enzymes ( biological catalyst )does not change shape permanently during the reaction process but it returns to its original shape after the reaction ( end of reaction )
Hence we can conclude that correct description is the substrate binds and the substrate changes shape and then substrate is acted upon by the enzyme.
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3(a). Diagram 3 shows some processes that involve the changes in the
state of matter. Choose the processes that release heat.*
Answer:
C
D
Explanation:
The processes of freezing sublimation releases heat to environment.
Freezing is a phase change by which a liquid changes to solid.
Sublimation is a phase change in which a gas changes to solid.
Phase changes by which a substance returns back to the state of orderliness involves a loss of heat. Sublimation is can be from solid to gas or gas to solid. In the process from gas to solid, heat is released. But from solid to gas, heat is absorbed.Photosynthesis
Use respiration in a sentence.
Answer:
Respiration is one of the chemical reaction that happens in all living cells.
Explanation:
Answer:
rhwheveeyeweuxeyeyeyheve
find the solution to the equation
[tex] {x}^{2x} - 5x {}^{2} + 4 = 0 \\ [/tex]
A large number species on Earth become extinct during a short time period about 65 million years ago. Based on this pattern of extinction, which is the MOST likely cause
Answer and Explanation:
During the whole biota history, there occurred extinctions due to different reasons.
During the Cretaceous, which took place between 145-65 million years ago, there occurred a massive extinction that eliminated most of the species on the Earth. Many of the characteristic groups of this period were affected. Dinosaurs, Plesiosaurs, Ammonites, Tricodonts, Cycas, Gynkgos, Conifers, the recent angiosperms, birds, and mammals.
The extinction was caused by the volcanic eruptions, and the unusual fall of many different asteroids, which caused important changes on the Earth´s surface. The consequent climatic change was what ended affecting all the species directly. The extinction was gradual, although it occurred in a short geological lapse of time.
Which is the process by which gas exchange between the respiratory system and the blood cells in the cappilaries occurs? transfusion condensation evaporation diffusion
Answer:
Diffusion
Explanation:
Diffusion is the process by which molecules of substances move from regions of higher concentration to regions of lower concentration until equilibrium concentration is attained. This movement of molecules is because a concentration gradient exists between the two regions.
Blood cells in the capillaries is low in oxygen because the cells have used up the oxygen in cellular respiration. However, in the lungs, the oxygen concentration is high due to inspiration of oxygen from the external environment. Therefore, a concentration gradient exists between the lungs and blood cells in the capillaries. Oxygen from the lungs diffuses into the blood cells in the capillaries, and these blood cells are then returned to other parts of the body by the circulatory system. This is a continuous process and is known as gaseous exchange.
Answer:
Diffusion
Explanation:
Which situation is MOST likely to cause sympatric speciation?
A
Galapagos tortoises developing differently on two different islands
B
changes in two deer populations after an earthquake separates them
C
a forest bird population dividing into two as they eat different seeds
D
Oceania splitting up to separate koalas and Tasmanian tigers
How are the krebs cycle and the electron transport chain related?
what is the highlighted number ?
Answer:
I think it is the atomic mass, or the atomic weight.
Explanation:
The number above the symbol is the atomic mass (or atomic weight). This is the total number of protons and neutrons in an atom. The number below the symbol is the atomic number and this reflects the number of protons in the nucleus of each element's atom.
(I'm so sorry if I'm wrong)
Hope this Helps!
best answer gets brainliest
Answer:
1) Crest
2) Trough
3) Wavelength
Question 4 (2 points)
Separately sodium and chlorine are dangerous, but together they create
a
b
ООО
a poison
baking soda
salt
C
d
nothing
Answer:
salt is the correct answer
Co..me up with your own example of a stimulus and response with living organisms
.
Answer:
A crocodile goes into the shade when the temperature goes high.
An example of a stimulus and response with living organisms is as follows:
Whenever any living organism is exposed to a warm or hot object it immediately pulls back its own body from this point of contact. This is also called as reflex action. What is a Stimulus?A stimulus may be defined as a type of thing or event that immediately provokes a specific functional reaction by an organ or tissue in response to a specific treatment.
The information that living organisms perceive from the external world is sensed by the sense organs then with the help of nerves it sends to the brain which stimulates a specific action and sends messages to the body to react in a particular way with the respect to the stimulus.
Therefore, an example of a stimulus and response with living organisms is briefly mentioned above.
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Which cell has the GREATEST surface area to volume ratio?
O Chicken egg
O Skin cell
O Bacterial cell
O Liver cell
The cell with the greatest surface area to volume ratio is the smallest cell, in this case, the bacterial cell.
As a cell increases in size, the proportional increase in volume is higher than that of its surface area. This tells us that the bigger a cell becomes, the lower its surface area to volume ratio will be.
The chicken egg is just one large cell, the largest cell produced by most animals. The skin and liver cells are much smaller, measuring roughly 25-30 micrometers. However, the smallest of the list by far is the bacterial cell, measuring a mere 1-3 microns. This size tells us that the greatest surface area to volume ratio belongs to the bacterial cell.
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Chapter 3 Study Guide (Connect-ED)
Please answer as much as you can, but try to answer ALL if you can.
1. Use the term sister chromatids in a sentence.
2. Define the word centromere in your own words.
3. The new cell formed by mitosis are called ________.
4. Use the term cell differentiation in a sentence.
5. Define the term stem cell in your own words.
6. Organs are a group of _______ working together to preform a different task.
Answer:
1. Sister chromatids are two identical copies of one chromosome.
2.The place where the sister chromatids are attached.
3. a diploid cell
4. Cell differentiation is when a cell turns from one type to another.
5. a cell that is uniquely able to develop into another.
6. tissues
Is eclogite a mineral or a rock?
Answer:
yea
Explanation:
Eclogite, any member of a small group of igneous and metamorphic rocks whose composition is similar to that of basalt. Eclogites consist primarily of green pyroxene (omphacite) and red garnet (pyrope), with small amounts of various other stable minerals—e.g., rutile.
From google btw
Different between the two types of reflection regular reflection and irregular reflection? "plz help me am new here"
Answer:
The light reflection is the returning back of light waves in the same medium on meeting a reflecting surface, and the surface at which the reflection takes place is called the reflecting surface, The light reflection is classified according to the nature of the reflecting surface into the regular (uniform) reflection, and the irregular (non-uniform) reflection.
Explanation:
Check Concepts
41. Using the scientific definition, which state-
ment is always true of work?
A) It is difficult.
B) It involves levers.
C) It involves a transfer of energy.
D) It is done with a machine.
Answer: C. It involves a transfer of energy.
Using the scientific definition, the statement that is always true of work is it involves a transfer of energy. The correct option is C.
What scientific theories?Scientific theories are the theories that are given by scientific facts and information. These theories are based on observation of natural things and places.
There is the transfer of energy in the natural world. Every organism and plant is connected with each other in the form of a transfer of energy. This is called a food chain.
In the food chain, the organism is divided into different levels. These levels are based on their food. They are autotrophs, heterotrophs, and decomposers. Autotrophs have the largest amount of energy.
Thus, the correct option is C) It involves a transfer of energy.
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Punnet square Rr x Rr diagram
Answer:
RR,Rr,Rr,rr
Explanation:
Answer:
RR,Rr,Rr,rr
Explanation:
Just combine all the possible combinations.
When creating a graph why is an appropriate tittle for a graph important
Answer:
Because when they look at the graph they look at the title to figure out what the graph is showing
Explanation:
6. In neighboring water molecules, oxygen is attracted to ____
forming a ____ bond
Answer:
hydrogen, covalent
Explanation:
A cell is 30 µm in width. Assume that the cell is cube shaped.
What would be the length of the side of the cell if you wanted to double the surface area to volume ratio of the cell?
Answer:
15
Explanation:
I got it wrong and this was the answer it gave me
state the doctorine of original evolution.
Answer:
because it is life
Explanation: