Answer: X-rays
double helix
Wilkins and Franklin studied the structure of DNA using X-rays, a technique to examine molecules, and helped Watson and Crick determined that the shape of the molecule was a double helix.
What are the functions of DNA?Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix. The polymer carries genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses.
DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins.
DNA is essential for inheritance, coding for proteins, and providing instructions for life and its processes. DNA dictates how a human or animal develops and reproduces, and eventually dies.
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What word describes a membrane that only allows certain things through it?
a)
passive
b)
active
c)
semipermeable
d)
impermeable
Answer:
C) semipermeable
Explanation:
because permeable means it allows things through, and then semi makes it to where it only allows certain things through
and Impermeable means it won't let things through and the other two options just don't make sense for the question
True or false Men can be carriers of X-linked disorders?
Answer:
True.
Explanation:
X-linked recessive diseases most often occur in males. Males have only one X chromosome.
HOPED THIS HELPED!!
The various enzymes in our body are _____.
carbohydrates
lipids
nucleic acids
proteins
Explain how the different forms of the gene produce different colours of coat.
Answer:
Skin colour is a good example of polygenic (multiple genes) inheritances. Skin colour is determined by the amount of the dark colour pigment melanin in the skin. This trait is determined by at least three genes. The genes that determine skin colour have two alleles each and are found on different chromosomes.
Answer:
The gene has 6 colours of coat.
skin colour is a good example of polygenic (multiple gene) inheritances. skin colour is determined by the amount of the dark colour pigment melanin in the skin. this trait is determined by at least three genes.
How does the gain or loss of thermal energy cause molecules to evaporate?
Answer:
When a liquid is heated, the molecules gain energy. This means they move and vibrate more, causing them to escape in the atmosphere.
PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!
Answer:
I think its b but I'm not sure
don't hate me if I'm wrong
C4 plants differ from c3 and cam plants in that c4 plants____.
Answer:
The difference between C3, C4, and CAM photosynthesis is the way plants extract carbon dioxide from sunlight. This depends largely on the plant's habitat. C3 photosynthesis produces three-carbon compound via the Calvin cycle while C4 photosynthesis makes an intermediate four-carbon compound that splits into a three-carbon compound for the Calvin cycle. Plants that use CAM photosynthesis gather sunlight during the day and fix carbon dioxide molecules at night.
CAM plants open their stomata at night, C3, and C4 open during the day.
Explanation:
What would MOST describe the environment found in Ireland? a. Vast green lands
b. Mountains and hills
c. Dry deserts
d. Rainforests with lots of trees.
Body cells that contain the full number of chromosomes, 46 in humans, are called
Answer:
somatic cells?
Explanation:
21. The graphs show the results from an investigation of relative enzymatic activity of four different enzymes in acidic and basic environments.
Which enzyme would most likely function well in the stomach?
Pepsin
Papain
Chymotrypsin
Cholinesterase
How are these atoms used to make new molecules and what types of molecules are made? Where does the energy come from to produce these new molecules?
Answer:
Atoms used energy to make new molecules.
Explanation:
Atoms used energy to make new molecules through making bonds with one another because bonds allow atoms to attached tightly with each other. The energy come from the external environment in order to produce new molecules. So we can conclude that energy is the main ingredient needed for making new molecules and this energy is gained from the environment.
Answer:
I would like to help, but what are the new molecules they are producing? And what are the atoms the question is talking about?
Fluorescent microscopy can be used to visualize cellular structures in very high contrast.
What do the fluorescent dyes stain to make this possible?
a) All cells in G1
b) Replicating DNA
c) Specific molecules
d) Mitotic structures
Answer: it is C
Explanation:
Specific molecules
Fluorescent microscopy can be used to visualize cellular structures in very high contrast because fluorescent dyes STAIN specific molecules (Option C).
A fluorescence microscope is a microscope that uses fluorescent dyes to stain a particular specimen.Some examples of fluorescent dyes include, among others, Rhodamine, Acridine Orange and DAPI.For example, 4′,6-diamidino-2-phenylindole (DAPI) is a fluorescent dye that stains Adenine–Thymine (AT) rich regions in the DNA molecule.In conclusion, fluorescent dyes STAIN specific molecules (Option C is correct).
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Can someone help me fill in the top one not the bottom one.
Here are the words for top blank one:
Broadest
Species
Specific
Domain
Answer:
specific is the correct answer
If an environment becomes warmer and drier, the change that would most likely
help a species adapt would be an increase in its
Answer:
ability to store water
Explanation:
ONLY ANSWER IF YOU KNOW
What is the main function of the Krebs cycle?
A. To break glucose down into two pyruvate molecules
OB. To produce carbon dioxide for use in the thylakoid
O C. To produce large numbers of ATP molecules
O D. To provide molecules for the electron transport chain
Answer: O D. To provide molecules for the electron transport chain
Explanation:
The effects of isotonic, hypotonic, and hypertonic extracellular environments on plant and animal cells is the same. However, due to the cell walls of plants, the visible effects differ. Although some effects can be seen, the rigid cell wall can hide the magnitude of what is going on inside.
Answer:
Yes.
Explanation:
Yes, there is same effects of isotonic, hypotonic, and hypertonic extracellular environments on plant and animal cells because both cells are more similar to each other. If a plant or animal cell is placed in a hypertonic solution, water will go outside the cell, and the cell will shrink, in isotonic environment, there is no water movement inside or outside of the cell, so there is no change in the size of the cell, while on the other hand, if a cell is placed in a hypotonic environment, water will enter the cell, and the cell will turgor.
This system perpares food for cellular utilization.
Answer:
The answer is
The digestive system prepares food for the cellular utilization.
I hope this might help u
Help 20 point
How do scientists determine the absolute age of rocks and fossils?
Scientists determine the absolute age of rocks and fossils with the help of a method known as radiometric dating.
What are Fossils?Fossils may be defined as the dead and organic preserved traces of past living organisms that were buried deep onto the earth millions of years ago.
Radiometric dating is a methodology that is utilized in order to determine or estimate the age of an object on the basis of the concentration of a particular radioactive isotope that is significantly contained within it and the half-life of that isotope as well.
The main evidence for determining the absolute age comes from radiometric dating methods, such as carbon-14 dating. Such types of methods depend on radioactive decay.
Therefore, the radioactive dating method is one of the methods through which scientists determine the absolute age of rocks and fossils.
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so what was the answer? you posted the question and the options, yet no answer? smh
I need help with this one.
Answer:
Here is ya answer C: Cells
Explanation:
PLZ BE QUICK! WILL GIVE BRAINIEST! Only 1 question! LOTS OF POINTS! HURRY!
Answer:
D. the more complex a living thing is the more chromosomes it is likely to have
Explanation:
:)
Answer:
I believe it is the last one
Two hybrid striped zebrafish mate and produce offspring. Stripes is dominant over no-stripes. What is the genotype ratio and phenotype ratio of their offspring?
Please answer these questions!!!
Answer:
Number 1 answer is C
Number 2 answer is A
Why does DNA need to be opened before mRNA
can be built?
Answer:
Since DNA contains recognition sites for RNA polymerase or its helper proteins to bind to, it must be opened before mRNA can be formed.The promoter region of the DNA opens up, allowing RNA polymerase to begin transcription. - gene (or, in bacteria, each transcribed group of genes) has its own promoter.Explanation:
DNA (Deoxyribonucleic acid )
DNA is a molecule made up of two polynucleotide chains that coil around each other to form a double helix and carry genetic instructions for the development, function, growth, and reproduction of all known organisms and viruses. DNA and ribonucleic acid are examples of nucleic acids (RNA).
Since they are made up of smaller monomeric units called nucleotides, the two DNA strands are known as polynucleotides. Each nucleotide is made up of a sugar called deoxyribose, a phosphate group, and one of four nitrogen-containing nucleobases (cytosine [C], guanine [G], adenine [A], or thymine [T]).
What is the difference between biology and chemistry?
Answer:
BIOLOGY IS STUDY ABOUT PLANT AND ANIMALS BUT CHEMSITRY IS ABOUT CHEMICAL EQUATIOB
Describe the pressure changes that occur in the lungs during breathing for someone with emphysema
Answer:
Emphysema can lead to destruction of the alveoli, the tiny air sacs that allow oxygen to get into the blood. Their destruction leads to the formation of large air pockets in the lung called bullae. These bullae do not exchange oxygen and carbon dioxide like normal lung tissue. Also, the bullae can become very large.
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Thank you
explain the relationship between structure and function for proteins include the term denaturation in your explanation name one secondary structure of protein. PLS HELP
Answer:
yeah
Explanation:
the mean fuction is that it transport engry in the body and around the whole part of the bosy
If sodium (Na) bonds with Chlorine (Cl), which statement is true?
Group of answer choices
An electron is shared between sodium and chlorine and a covalent band is formed
An electron is transferred from sodium to chlorine and an ionic bond is formed
An electron is transferred from chlorine to sodium and an ionic bond is formed
An electron is transferred from sodium to chlorine and a covalent bond is formed
Answer:
2
Explanation:
if sodium bonds with chlorine ionic bond formed
Pls help me, this is science btw.
Answer:
(B) and (E)
Explanation:
It is not option (A) because it says that Lactobacillus is a kind of bacteria that harms you, not is good for you, and parasitic bacteria are harmful to you, so not (A).
Not (C) because it does not make any sense whatsoever.
Not (D) since that says that S. typhi has a mutualistic relationship, which is good for both organisms, which is not true in this case.
It is (B) because the harmful bacteria, S. typhi is a parasite to humans.
It is also (E) since that says that the Lactobacillus bacteria does share a good relationship with humans.
Incomplete Dominance
I need help
Answer:
1.
Red = rr
Blue = bb
Purple = rb
2.
a) Genotype - rb
Phenotype - purple
b) 0%
c) 100%
d) 0%
3.
a) Genotypes - rr, rb, bb
Phenotypes - red, purple, blue
b) 25%
c) 50%
d) 25%
4.
a) Genotypes - rb, bb
Phenotypes: purple, blue
b)
50 purple
50 blue
0 red
