what is the difference between ribose and deoxyribose
If I had a section of DNA that contains 350 nucleotides and the A's and Ts made up 200 of
those nucleotides, how many As
Gs
Cs
and Ts
do I have?(.5 points each response)
Answer:
100 A
100 T
75 C
75 G
Explanation:
there will be an equal amount of thymine and adenine since they bind together so, 200/2 = 100 each
now there is 150 nucleotides left
guanine binds to cytosine so they also have an equal amount, so 150/2=75
Answer:
As = 100
Ts = 100
Gs = 75
Cs = 75
Hope you could get an idea from here.
Doubt clarification - use comment section.
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Answer:
C
Explanation:
proteins have a chemical composition of hydrogen carbon oxygen nitrogen and sometimes sulfur
8
1 point
If an element is radioactive
0 It will react with other elements to form compounds
It will not react with other elements
It will spontaneously decay into other stable elements
It will spontaneously explode
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Question 4 of 10
A cell membrane is very specific about what it allows across. How does this
help the cell?
A. It helps the cell absorb as many different molecules as possible.
B. It is better for the cell if most molecules are prevented from
entering
C. Transport proteins allow only enzymes to pass through the
membrane.
D. The cell works better when it contains fewer proteins.
Oh
Answer:
(B) It is better for the cell if most molecules are prevented from entering.
I hope this helped at all.
Which statement describes the process of osmosis in an animal cell
Answer: B.
Explanation:
The statement that describes the process of osmosis in an animal cell is water molecules move across the plasma membrane until solute concentration are equal on both sides of the membrane.
OSMOSIS:Osmosis is the process by which water molecules move from a region of higher concentration to a region of lower concentration through a semipermeable membrane.
According to this question, which is describing the structure of the cell membrane as a semipermeable membrane. The cell membrane selectively allows the passage of certain molecules.
Osmosis will occur in this animal cell when water molecules move across the plasma membrane until solute concentration are equal on both sides of the membrane.
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write a paragraph about Balochistan
Explanation:
Balochistan is located at the eastern edge of the lranian plateau and in the difficult to define border region between southwest, central and south Asia.
What is the function of glycoproteins?
O to detect bacteria and other foreign bodies outside of the cell
O to actively carry specific ions or molecules into the cell
O to serve as identification for the cell
O to allow specific ions or molecules to pass freely
Answer:
Glycoproteins are molecules that comprise protein and carbohydrate chains that are involved in many physiological functions including immunity. Many viruses have glycoproteins that help them enter bodily cells, but can also serve to be important therapeutic or preventative targets.
Explanation:
this is the correct answer happy
The formation of clouds is caused by which of the following?
O condensation
O evaporation
O infiltration
O precipitation
Answer:
condensation
Explanation:
once evaporation occurs the water vapor rises and condenses into clouds when it hits the colder air higher in the atmosphere.
Answer: Condensation
Condensation is the change of the state of matter from the gas phase into the liquid phase, and is the reverse of vaporization. This word mostly refers to the water cycle.
Which of the following choices is a component in the habitat of a wetlands ecosystem?A. Moss
B. Bacteria
C. Water
D. Blue Heron
Answer: C.-Water
Explanation: Water is the main component when it comes to wetlands.
Habitat is the environmental place where organisms like plant and animal lives. Water is the habitat component present in the wetland ecosystem. Thus, option C is correct.
What is an ecosystem?An ecosystem is a biological community that lives together and has an interconnection with each other as well as their surroundings and other abiotic factors.
The ecosystem can be found in freshwater, marine, or terrestrial places. The wetland ecosystem is covered by water in all seasons and is seen in the form of swamps, marshes, etc.
The wetland is characterized by the presence of water that controls the erosion, water quality, abatement of the flood, etc.
Therefore, water is a component of the wetland ecosystem.
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DNA sequences that control traits are called
a. genes
b. proteins
C. enzymes
d. deoxyribose sugar
gene
Explanation:
the gene of a human being carried all the traits of the person which can be transferred to an embryo when fertilization occurs
What change in the mass number of a nucleus occurs when the nucleus emits an alpha particle?
Answer:
Protons are positively charged. When a nucleus emits an alpha particle, these changes happen: the mass number decreases by 4. the atomic number decreases by 2.
Explanation:
Protons are positively charged. When a nucleus emits an alpha particle, these changes happen: the mass number decreases by 4. the atomic number decreases by 2.
The spinal cord is associated with ____________ pairs of spinal nerves. Spinal nerves are considered
A student made a list of structures are observed in cells from two different organisms which statement describes the most likely difference in the way that organism one and organism two obtain energy
3. How does a tongue help in the process of digestion?
Answer:
the tongue helps in the process of digestion by facilitation the movement of food while chewing and assisting the process of swallowing
Explanation:
What characteristics do Prokaryotic cells have? (Select all that apply)
A. Complex-has organelles
B. Has DNA
C. Has cell membrane
D. Makes up both multicellular & single-celled organisms
Answer:
it has:-
B) Has DNA
C) Has cell membrane
What are the two stages of photosynthesis represented
Answer:
Light dependent reactions and light independent reactions.
A DNA microarray contains immobilized DNA that corresponds to different genes. The microarray is hybridized with fluorescently labeled DNA probes reverse transcribed from the control and experimental mRNA samples. The control probe is labeled with a red fluorochrome, while the experimental probe is labeled with a green fluorochrome. What will be the color of the spot representing a gene with moderately upregulated expression in the experimental sample relative to the control one
The color of the spot of a gene with moderately upregulated expression will be lime-green. A DNA microarray is a technique used to determine the expression level of many genes simultaneously.
A DNA microarray is a laboratory technique used to identify the genes that are being expressed in a cell.
A DNA microarray contains many tiny spots of specifically labeled cDNA samples referred to as probes, which can be hybridized by base complementarity to transcribed (mRNA) gene sequences.
In the DNA microarray, the probes can be fluorescently marked gene sequences.
After hybridization, the DNA microarray is then scanned in order to determine the level of gene expression of each mRNA that hybridizes with their corresponding probes on the slide.
In this case, green spots evidence genes that are being strongly expressed in the sample.
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Explain how protein electrophoresis is done. Is it different from DNA and RNA electrophoresis?
Several generations of one family have lived in their home in the mountains since the 1800s. The government designates a new wilderness area, putting the house within the wilderness boundaries. The family is now forbidden to use motorized vehicles to reach their home, they cannot operate a chainsaw to cut firewood, and they cannot string lines for telephones and electricity. This would be an example of: __________
Answer:
conservation with no sensitivity to local and individual circumstances.
Explanation:
what organ retains or releases body fluids, thereby regulating blood volume and blood pressure?
Answer:
excretion
Explanation:
waste
Answer: Kidneys
Explanation:
what is vascular tissue
Seedless plants grow from __________?
I need an answer for an 7 or 8 grader
Seedless vascular plants are plants that contain vascular tissue, but do not produce flowers or seeds. In seedless vascular plants, such as ferns and horsetails, the plants reproduce using haploid, unicellular spores instead of seeds.
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Patient describes a burning sensation on the posterior side of her body, lateral to the spine on the left side of the body inferior to the shoulder blade, inferior to the waist and superior to the knee. Where is this located on the image above?
A
B
C
D
E
F
G
H
I
J
Answer:
Explanation:
Injuries to the upper brachial plexus (C5, C6) affect muscles of the shoulder and elbow.
Please help me!!! ASAP
cellular respiration
Explanation:
A
What are some functions of the foot in rotifers? (Choose all that apply)
to propel itself through its environment
to aid in defense against predators
to assist in the digestion of food
to attach itself to a variety of structures
Answer:
to propel itself through its environment and to attach itself to a variety of structures
Explanation:
I took the quiz(-.-)
Rotifers foot is transformed into a variety of structure for moving and swimming and attach itself to a different structure, hence option d is correct.
What are rotifers?Some rotifers are really planktonic and free-swimming, while others travel around a substrate via inchworming, and some are sessile and reside inside tubes or gelatinous holdfasts.
About 25 species are sessile or planktonic, colonial (such as Sinantherina semibullata), and some rotifer species have evolved four moveable toes that are equipped with pedal glands to facilitate swimming and crawling.
Rotifers swiftly colonize new environments and transform primary production (algae and cyanobacteria) into a form that is secondary consumers.
Therefore foot of the rotifers is changed into a different structure for movement is attach itself to a variety of structures, hence option d is correct.
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What is Darwin's theory called?
Describe the basic ideas behind his theory.
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Darwinism, theory of the evolutionary mechanism propounded by Charles Darwin as an explanation of organic change. It denotes Darwin's specific view that evolution is driven mainly by natural selection.
Which organelle captures energy from the sunlight and uses it to produce food in a plant cells
A. Chloroplast
B. Nucleus
C. Ribosomes
D. Mitochondria
Definition of Genetic Engineering
Answer:
Genetic engineering is the process of altering or modifying the DNA in an organism’s genome.
Answer:
Genetic engineering, also called genetic modification or genetic manipulation, is the direct manipulation of an organism's genes using biotechnology
Which population would most likely be able to persist over many generations, despite having limited genetic variability
Answer:
A population in a relatively stable and static environment
Explanation: