Answer:
If a DNA strand has the base sequence TTCCGGAA the complementary strand has the sequence AAGGCCTT.
Explanation:
A DNA molecule is constructed from sequences of its four nitrogenous bases: adenine, thymine, guanine and cytosine. Since DNA is made up of two strands, the sequence of nitrogenous bases of one strand is complementary to the other .
The complementarity of the bases is a characteristic of the nitrogenous bases in the nucleic acids to combine with their complementary base, which is the same as saying that purines complement with pyramidines.
Adenine is combined with Thymine A=T Cytosine is complemented with Guanina C≡GIn this way, given a sequence on a DNA strand :
T-T-C-C-G-G-A-A
The complementary strand will have this sequence:
A-A-G-G-C-C-T-T
Porcupines have long sharp hairs called quills. What is the main function of the quills on the porcupine?
Answer:protection from other predators.
Explanation: the quills will stick into a predator that attack the porcupine Note: it does NOT shoot its quills
Answer: protection from other predators.
What should scientist do after completing a scientific investigation
Answer:
confirm the results if you're using edge
Explanation:
Answer:
B. confirm the results
Explanation:
i just took it
How does the phrase
division of labor relate to differentiation?
If you multiply six positive numbers, the product sign will be
Answer:
Positive
Explanation:
Because there is no negative numbers in your equation and a positive times a positive equals a positive.
SOMEONE PLZ HELP ME!!!!!!!
Answer:
nucleus mitochondria ,
, lysosome i think
Explanation:
Answer:
A) nucleus
B) mitochondria
D) lysosomes
Explanation:
you can look at a diagram and find the differences
Romeo and Juliet How can love bring both joy and pain?
Answer:
Explanation:
How can love bring both joy and pain?
love can be bittersweet an example of this is imagine you fall in love with someone you want to be with them forever and they make you happy, but the people around don't like it they find it disgusting you have to keep your loved one a secret from everyone in fear people might disown you.
love can be bittersweet an example of this is imagine you fall in love with someone you want to be with them forever and they make you happy, but the people around don't like it they find it disgusting you have to keep your loved one a secret from everyone in fear people might disown you.
Who was Romeo and Juliet?A long-standing feud between two wealthy families turns violent. A gang of masked Montagues break into a Capulet celebration, risking additional strife.
A young Romeo Montague who is infatuated with love falls in love right away with Juliet Capulet, who is about to wed the man of her father's choosing, the County Paris.
The women set up the wedding for the following day with the aid of Juliet's nurse, but Romeo is exiled after killing Tybalt, Juliet's own cousin, when intervening in a street fight. Juliet follows the Friar's plan and pretends to die in an effort to reconnect with Romeo.
Therefore, love can be bittersweet an example of this is imagine you fall in love with someone you want to be with them forever and they make you happy, but the people around don't like it they find it disgusting you have to keep your loved one a secret from everyone in fear people might disown you.
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Histones are small proteins with a strong positive charge at physiological pH. They are found in the nuclei of eukaryotic cells and package DNA into nucleosomes, the fundamental structural units of chromatin. Based only on this description, what two forms of chromatography could you use, one after the other, to separate histones from other cellular proteins? Explain your reasoning.
Answer:
Two modes of chromatography that could be used over and over, based on characteristics of histones throughout the issue, are:
Size-exclusion Chromatography Ion exchange chromatographyExplanation:
Using size exclusion chromatography:A stationary step, consisting of such a polymeric material with numerous pores of various sizes. The larger proteins would travel further as the solvent system comprising the analytes flows through the paper chromatography and therefore will be separated first. That was because their greater size does not in itself allow the pores found in the polymer to get trapped. Tiny proteins such as histones, and on the other hand, can pass slowly across the process to have been eluted later.
Using Ion exchange chromatography:As even the histone properties at biological pH are strongly positively charged, through the use of highly reactive particles as when the stationary step will allow histones to connect to themselves and now all the proteins, as well as favorable proteins that are poorly absorbed, would be eluted. Many positively charged molecules, that aren't as highly charged at around the same pH as histones, will stay throughout the stationary step, however, based on whose net charge, should flow independently of histones.
The two classes of chromatography techniques include size-exclusion and ion exchange chromatography.
What are size-exclusion and ion-exchange chromatography?Chromatography is a technique used in molecular biology laboratories to separate biomolecules.
Size exclusion chromatography is a technique capable of separating biomolecules according to size by using filtration in a gel. Size exclusion chromatography is a technique capable of separating biomolecules and ions according to their affinity to a given ion exchanger.In conclusion, the two classes of chromatography techniques include size-exclusion and ion exchange chromatography.
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Compare the exoskeletons of two invertebrates: a grasshopper (Arthropod) and a clam (Mollusca). How do they differ in relation to support and movement?
Answer:
Mollusca: Unsegmented exoskeleton, with no appendixes articulated to them. This skeleton has a calcareous origin. Arthropoda: Segmented exoskeleton, with different appendixes articulated to them, which develop different functions. This skeleton has a chitinous origin.Explanation:
Clams are bivalves. Their calcareous exoskeleton has two valves dorsally articulated to each other. They do not articulate with any appendix, although. These animals also have a foot, a small head, and a developed mantle cavity. The valves are convex, oval, and unsegmented. They are composed of three layers: periostracum, prismatic, and pearly. En the dorsal portion of each valve, there is a bulge called the umbo, which is the oldest part of the valve. The articulation has some teeth-shaped structures that are intercalated, maintaining the valves together and fixed. Grasshoppers have a chitinous exoskeleton divided into three principal segments or regions that allow their movement: head, thorax, and abdomen. The head is orientated in such a manner that their feeding apparatus is heading down. Also, the head segment has composed eyes and antennae. The thorax is the medial region of the body. It has three segments: the prothorax, mesothorax, and metathorax. Each of these segments articulates with a pair of legs. Finally, the abdomen is composed of many segments that might reach up to 7 or 11.Which codon is the code for the amino acid serine (Ser)?
Messenger
Second base in codon
RNA Codons
U
С
A
G
UUU
Phe
UCU
UAU
UGU U
UUC UCC UAC
Tyr
UGC
Cys
U
Ser
UUA 1
Leu
UCA UAA Stop UGA Stop A
UUG UCG UAG Stop UGG Trp G
CUU CCU CAUT CGU U
His
CUC ССС САС! CGC
Leu
Pro
CUA CCA CAA CGA
Gin
CUG CCG CAG CGG
AUU ACU AAU
As
AGU
Ser
AUC lle ACC
ААС! AGC
A
Thr
AUA ACA
AAA
Arg
AUG startet ACG AAG AGG
GUU
GCU
GAU
Asp
GGU
U
GUC GCC
GAC
GGC
G
Val
Ala
GUA
Gly
GCA
GAA
Glu
GGA
A
GUG GCG GAG
GGG
Arg
First base in codon
이이이이이드
Third base in codon
OPOCO POCO Blocos
Lys AGA
A. AGU
B. UGA
C. AGG
D. AGA
No
Answer:
four codon in mRNA sequence code for serine aminoacid.
Explanation:
UCA
UCG
UCC
UCU
these four codons code for aminoacid serine.
ALOT OF POINTS MARKING POEPLE AS BRAINLIST
Look at the graph. Explain how the two population are related to each other
both species had growth in number within the same time period
10.
_________produces pollens and______
develops into the fruit.
Answer:
stamen produces pollen ovules develops into fruit
Explanation:
octopus and squid have chemoreceptors on their
Answer:
tentacles
Explanation:
hope this helps :]
Answer:
octopus have chemoreceptors in the epidermis
Explanation:
hope this helps a little
What’s da answer yalll I need help ...
Answer:
I believe the answer is a missense mutation.
Explanation:
As it is a point mutation, a single nucleotide will provide a codon for a different chain of amino acids from that point on. This is a type of non-synonymous substitution.
In which of the following relationships do both species benefit?
A. Competition
B.Commensalism
C. Parasitism
D. Mutualism
Which statement describes competition in an environment? Organisms share a place to sleep. A living thing consumes berries on a tree. Sunlight shines only three months out of the year. A stream supplies an abundance of water in a forest.
Answer:
Sunlight shines only three months out of the year.
Explanation:
I think this is right
Because abundance means a large amount so there would be no competition there.
If organisms share a place to sleep then that means no competition
If a living thing is consuming berries on a tree then the living thing is just eating
But if the sunlight only shines three months out of the year then that can cause a shortage of food in the environment causing for the living creatures in the environment to compete for the food that is left since there won't be enough to supply for and abundance of living things.
The statement that describes competition in an environment is option B a living thing consumes berries on a tree. Thus, consuming berries on a tree is reducing the availability of the food for other livings depends on the berries.
What is survival of living things?In the nature, the concept that survival of the fittest domintates. The organisms which are fit physically and are smart to gather food will survive in the nature otherwise they will extincts.
An ecological community is a collection of populations of at least two distinct species that interact both directly and indirectly in a specific geographic area. Within this community, diffrent organisms can be found .
Numerous ecological characteristics and functions, including nutrient cycling and food webs, are based on interactions between species. Depending on the evolutionary context and environmental factors that they take place in, these interactions can have a variety of different natures.
Because of this, ecological interactions between particular individuals and entire species are frequently difficult to identify and quantify and depend on their scale and context they face extinction. Hence, option B is correct.
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What key adaptation allowed the ferns to be successful and populate more areas than the bryophytes?
Answer:
Possession of root, leaves and vascular/conducting tissues
Explanation:
Ferns and bryophytes are regarded as lower plants in botanical studies. Bryophytes have been in existence prior to the appearance of ferns. BRYOPHYTES are a group of non-vascular plants i.e. lack conducting tissues such as xylem, phloem etc. They include misses, liverworts and hornworts. Ferns, on the other hand, belong to a group of vascular plant species called PTERIDOPHYTES.
However, in terms of population and domination of the Earth, ferns are believed to be more successful than their counterparts (bryophytes). This is primarily because of the possession of true roots and vascular tissues like xylem (for conducting water), phloem (for conducting sugars) by FERNS making it easily adapted to life on land.
URGENT PLEASE HURRY
Answer:
starting point 3 traveling at a velocity of 15 I think
Explanation:
sorry if you get it wrong
ALOT OF POINTS MARKING POEPLE AS BRAINLIST
Look at the graph. Explain how the two population are related to each other
Which of the following mRNA codons will bind to the tRNA anticodon 5' GCU 3', considering wobble–base pairing rules. Select one:
a. 5' CGA 3'
b. 5' AGU 3' and 5' AGC 3'
c. 5' AGC 3'
d. 5' UGA 3' and 5' CGA 3'
Answer:
a. 5' CGA 3
Explanation:
The wobble type of base pairing also comprises the base pairs formed by inosine (I) also called hypoxanthine with Cytosine(C), Thyamine(T), or Adenine (A),
Where purine base pairs A to G(or I), A to A, and G to C.
Where
5' GCU 3' pairs with
5' CGA 3
Therefore G pairs to C, C pairs to G, U pairs with A.
How do healthy cell decide when to divide?
Answer:
Cells regulate their division by communicating with each other using chemical signals from special proteins called cyclins. These signals act like switches to tell cells when to start dividing and later when to stop dividing.
A healthy cell decides when to divide by sensing and receiving signals from its surrounding environment.
The cell cycle can be divided into interphase and a mitotic (M) phase.During the interphase, the cell synthesizes all materials required (i.e., proteins, DNA, etc) to divide during the M phase.During the cell cycle, a cell modulates its division by communicating with other cells via specific chemical messenger molecules known as cyclins. Cyclins are proteins that interact with Cyclin-dependent kinases (CDKs) and thus function as molecular switches that regulate the progression through the cell cycle.In conclusion, a healthy cell decides when to divide by sensing and receiving signals from its surrounding environment.
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Sasha is studying a rock formation for her science class. Every few days she goes outside to study the formation. The questions she is
investigating are shown.
• Did the rock freeze and
unfreeze?
• Are there any plants growing on
the rock?
• Did the rock change color?
What question is Sasha most likely trying to answer?
O A. What is the age of the rocks in the rock formation?
B. What type of rocks are found in the rock formation?
C What processes are weathering the rock formation?
D. What minerals are the hardest in the rock formation?
Answer:
ill say c
Explanation:
Which of the following is not a viral disease : (needed ASAP)
1. AIDS
2. Typhoid
3. Mumps
4. Polio
Answer:
It is typhoid. typhoid is not a viral disease
Answer:
Typhoid is not a viral disease.
Explanation:
Viral diseases are spread through virus particles, while typhoid is spread from typhi bacteria.
Calculate the force needed to cause a 6 kg bowling ball to accelerate 20 m/s2.
Answer:
120N
Explanation:
F=ma
120N=6kg(20m/s^2)
Predict what would happen if chemical energy is burned?
Energy is converted to mechanical energy.
The amount of chemical energy starts to decrease.
Energy is destroyed.
Sound energy can be created through an explosion.
Answer:
The amount of chemical energy starts to decrease.
Explanation:
Hope this helped
Atoms of A decay to atoms of B with a half-life of 200,000 years. If there are 20,000 atoms of A to begin with, how long will it take for there to be 2,500 atoms of A?
Answer:
The correct answer is: 600,000 years
Explanation:
Half-life is the time which is essential or required to decrease a specific substance to half of its initial amount of the substance. So, if a substance has a half-life of 200,000 years then it means it takes 200,000 years to decrease or change into a new substance and remain half of its initial quantity.
half-life amount
0 20000
1 10000
2 5000
3 2500
total half-life = 3 to 2500 atoms of A
so, the time will be = 3 * 200,000 years
= 6000000
Explain one way the water cyce affects weather.
Answer:Consequently, the temperature will fall. Rainfall and snow are results of water cycle and can lead to severe weather conditions. Excessive rainfall due to water cycle can cause floods. Extremely low rainfall, lack of adequate water sources can lead to draught in a given region.
Explanation:
Write a paragraph 4-5 sentences as to which one you think is better sexual or asexual reproduction
Answer:
Asexual
Explanation:
I think Asexual reproduction is better because you only need one reproduction Creature. For example plants, they are asexual so they do not need to worry about mating. Instead they can just create more plants by doing nothing. This helps us because we get more plants in a shorter amount of time. another example of Asexual reproduction is cross-pollination which is also an amazing way of creating more plants in a shorter time.
Which list of countries arranged least to most in terms of how much of their income they spent on food
1China Canada Poland Kenya
2Poland China Kenya Canada
3 Canada Kenya Poland China
4 Canada Poland China Kenya
Answer:
is number three
Explanation:
Melanin is a that is produced in organelles called in specialized cells called ________.
Answer:
Melanocytes
Explanation:
Melanocytes produce the protective skin-darkening pigment melanin. Melanocyte, specialized skin cell that produces the protective skin-darkening pigment melanin. Birds and mammals possess these pigment cells, which are found mainly in the epidermis, though they occur elsewhere like in the matrix of the hair.
Melanin is a that is produced in organelles called in specialized cells called
MelanosomesMelanin is a dark pigment that is found in the skin of a human. This factor affects the color of the eyes, hair, etc in people as the more melanin available in the body, the darker these parts of the body are.
A specialized cell is responsible for the production of melanin called melanosomes and this is in varying quantities in different people.
Melanosomes are those cell nucleus that are responsible for the production, storage and transfer of melanin to the parts of the body.
Therefore, the correct answer is melanosomes
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What is the natural tendency of molecules to spread from an area of high concentration to an area of low concentration?
A.
Active transport
B.
Vesicle
C.
Passive transport
D.
Diffusion
Answer:
This concept is known as diffusion. Diffusion is a passive process, as it requires no energy for it to occur. In a cell, it is used as a method of passive transport since it requires no energy.
Explanation:
A P E X