Answer:
A
Explanation:
The amino acid substitution of Val for Glu in Hemoglobin S results in aggregation of the protein because of _____ interactions between molecules. covalent disulfide hydrogen bonding hydrophobic ionic
Answer:
hydrophobic interactions
Explanation:
Hemoglobin S (Hb S) is an abnormal type of hemoglobin where red blood cells become sickle-shaped and these elongated cells have difficulty to pass through small blood vessels. This type of hemoglobin is caused by a substitution (Glu>Val, GAG>GTG) in a β-globin gene variant. When the normal sequence is altered, a different amino acid is synthesized and it modifies the interactions between side chains by hydrophobic interactions, thereby affecting protein folding.
What is the function of the cell wall in a plant cell? To make the plant rigid and to support the cell To control what enters the cell To direct the cell's activity
Answer:
To make the plant rigid and to support the cell
Explanation:
Answer:
the cell wall provides rigidity and mechanical support to the cell
which molecule can form hydrogen bonds with others like
Answer:
Please mark as brainliest!!!!!
Explanation:
The attractive force between water molecules is a dipole interaction. The hydrogen atoms are bound to the highly electronegative oxygen atom (which also possesses two lone pair sets of electrons, making for a very polar bond. The partially positive hydrogen atom of one molecule is then attracted to the oxygen atom of a nearby water molecule
Why would your force of gravity increase if you went to a larger planet?
Answer:
because the gravity depends on the mass of object, if object is large or big it have more gravity than smaller one. As the large planet has large mass than small planets. So, force of gravity increases if we went to larger planet.
Which molecule is a primary source of animals?
Answer:
F or maybe c
Explanation:
scientific reason bio biosphere reserve is a boon for plant and animals
The correct answer to this open question is the following.
The scientific reason biosphere reserve is a boon for plants and animals because this reserve is under the supervision of specialists, scientists, and environmentalists. This protected area includes a diversity of animals, plants, and nature that requires conservation on the part of humans to maintain the proper conditions of the reserve. These living things and organisms interrelate with all the environment and scientists try to restore and supervise the growing and developing of the species in the reserve for the good of all mankind.
In an aquatic habitat it's important to monitor the levels of organisms such as dragon fly nymphs and leaches
due to the fact that they can be used to determine the effects of long and short term pollutants. HELPPPP it’s either true or false
Answer:
True
Explanation:
The given statement “In an aquatic habitat it's important to monitor the levels of organisms such as dragon fly nymphs and leachesdue to the fact that they can be used to determine the effects of long and short term pollutants” is true because they are considered bioindicators.
These organisms respond to the presence of pollutants, and their abundance and diversity can provide valuable information about the water quality. When certain pollutants are present in the water, the populations of these organisms may decline or show abnormal behavior, indicating the presence of short or long-term pollution effects.
Monitoring their levels and observing any changes over time can help identify pollution trends and assess the overall ecological health of the aquatic ecosystem. Dragonfly nymphs and leeches play a crucial role in the food chain of aquatic habitats. These organisms accumulate pollutants in their tissues, which magnifies the concentration of the contaminants as they move up the food chain.
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Through which process could a large molecule such as protein EXIT the cholera cell?
—
A)diffusion
B)osmosis
C)exocytosis
D)endocytosis
Protein can exit a cholera cell through ; ( C ) exocytosis
Exocytosis is the process whereby secretory vesicles fuses with the plasma membrane and this leads to the discharge of the contents of the vesicle outside of the cell and into the extracellular fluid,
During Exocytosis large molecules like protein can exit a cholera cell because during exocytosis the contents of the cholera cell will be discharged outside the cell into the extracellular fluid.
Hence we can conclude that Protein can exit a cholera cell through ; ( C ) exocytosis.
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Why does a good cook wait until just before serving to put salad dressing on lettuce?
Answer:
So the lettuce leaves don’t get soggy
Explanation:
The dressing contains salt, which will draw out moisture from the lettuce and make it soggy.
what does a cell do to prepare for cell division
Answer:
interphase
A cell spends most of its time in what is called interphase, and during this time it grows, replicates its chromosomes, and prepares for cell division. The cell then leaves interphase, undergoes mitosis, and completes its division.
How did the hydrocarbons found in petroleum products such as gasoline get their energy ?
There are huge quantities of petroleum found under Earth's surface and in tar. Some experts predict peak oil could come as soon as 2050. Crude oil is composed of hydrocarbons, which are mainly hydrogen
why is astronomy referred to as observational science and not primarily experimental science
Astronomy is referred to as observational science and not primarily experimental science because it focuses on the acquisition of data from observations of astronomical objects.
When this data are acquired,they undergo analysis and using basic principles of physics.
Unlike experimental Science which seems to build knowledge through directly observing and measuring of objects and phenomenon by scientists.
A good understanding of experimentation is important here.
What are the limitations of uranium-238 dating? How did you overcome
its limitations?
Answer:
4
Explanation:
Answer:
Uranium 238 is only found in igneous or volcanic rocks. So no fossils can be dated directly using U 238. Because of the huge differences in the half lives of Carbon 14 and Uranium238 they cannot be used together. Carbon 14 can only be used to date fossils of a very recent age.
Explanation:
freepoints has any one done a koalas research paper
Answer:
nope
Explanation:
Answer:
Tyyyy and yes i have i did one about a month ago if you need some help i can always help
Where do fossil fuels come from?
Answer:
They can come from animals or anything that has bones, such as; Dinosaurs
Answer:
Fossil fuels are made from decomposing plants and animals. These fuels are found in the Earth's crust and contain carbon and hydrogen, which can be burned for energy. Coal, oil, and natural gas are examples of fossil fuels.
DPESTICIDESSWEwhat is a man-made ecosystem but you get the idea
Describe how the composition and structure of the atmosphere insulates the planet and protects organism.
Answer: because of its layers
Explanation:
The atmosphere protects life on Earth from incoming ultraviolet (UV) radiation, keeps the planet warm through insulation, and prevents extremes between day and night temperatures.
What is Atmosphere?
An atmosphere is defined as the layer of gas or layers of gases that envelop a planet, and are held in place by the gravity of the planetary body where the planetary atmosphere is present when gravity is great and the temperature of the atmosphere is low.
The Earth's atmosphere extends up to 10,000 kilometers above the surface of the planet, which merges into space.
Beyond the chemical composition which is necessary for life, the composition of the atmosphere in different thermal regions produces weather patterns that in turn determine climate while the upper atmosphere and its ozone layer protect living organisms on Earth from highly harmful UV-B radiation.
Thus, the atmosphere protects life on Earth from incoming ultraviolet (UV) radiation, keeps the planet warm through insulation, and prevents extremes between day and night temperatures.
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Which is required by all living things? A: energy
B: mobility
C:oxygen
D:carbon dioxide
2. Define Meiosis
+
O A. Cell division to create Body Cells.
O B. Cell division to create sex cells with half of the number of chromosomes.
O C. Hybrid
O D. Physical Appearance
How are cancer cells Different from normal cells?help!!! Due today!!!!
Answer:
In contrast to normal cells, cancer cells often exhibit much more variability in cell size—some are larger than normal and some are smaller than normal. In addition, cancer cells often have an abnormal shape, both of the cell, and of the nucleus (the “brain” of the cell.) The nucleus appears both larger and darker than normal cells.
Explanation:
If you find a reptile fossil buried and lithified among mud and decayed plant material, what type of depositional environment might you infer while the animal was still alive?
Answer:
The correct answer is - swamps/bog
Explanation:
Swamps or bogs are characteristically similar as they both area are known for the poor soil or muddy soil due to the quiet water conditions which is acuumulate by the precipitation mainly. These are have high peat content where mud and decaying or decomposing plant material found.
Bog or swamps are form due to the hundered years of decomposition or decys in plants and plants materials. As it stated that the reptile fossil buriiend lithified among mud and decayed plant material the environment must be bog or swamp.
15. Laura and Stevie are conducting a science experiment to identify different kinds of macromolecules in food. They
prepare the following table to help them remember the chemical reactions that indicate the presence of each type of
macromolecule they're studying.
Substance Reaction
blue Benedict's solution turns green, yellow,
Sugar
or orange
Starch
brown iodine turns purple
Protein
blue Biuret solution turns pink or purple
Lipids
colorless Sudan stain turns red
Suppose that one of the substances they're testing turns bright red when they add a few drops of Sudan stain. What
is the basic molecular structure of the substance?
A glycerol combined with long chains of fatty acids
B strings of amino acids held together with peptide bonds
с short carbon chain or ring in which the ratio of carbon, hydrogen, and oxygen is 1.2.1
D polymer made up of many monosaccharides
Answer:
A. glycerol combined with long chains of fatty acids
Explanation:
How can we justify the conservation of energy using "system/surroundings" terminology for an open, closed, and isolated system?
Answer:
Closed systems do not exchange energy with the environment, while open systems do.
Explanation:
The cause of this is because closed systems are made up of an insulator that surrounds them and isolates them from the environment or adjacent environment.
This insulation prevents heat from being taken in or transferred from the surroundings as in the case of open systems.
Hypothesis Earth systems interact with and another. What might happen to your local hydrosphere and geosphere if conditions in the atmosphere caused rain for several weeks?
Answer:the hydrosphere(bodies of water)would cause floods and other natural disasters while the geosphere will become infertile and landscape change (weathering).
Did this help? If so please leave a thanks! or even better a brainliest. This would really help me out. (: thank you.
The hydrosphere(bodies of water)would cause floods and other natural disasters while the geosphere will become infertile and the landscape change (weathering).
What is a hydrosphere?The hydrosphere is the combined mass of water found on, under, and above the surface of a planet, minor planet, or natural satellite.
Although Earth's hydrosphere has been around for about 4 billion years, it continues to change in shape.
This is caused by seafloor spreading and continental drift, which rearranges the land and ocean
When Hypothesis Earth systems interact with another hydrosphere (bodies of water)would cause floods and other natural disasters while the geosphere will become infertile and the landscape change (weathering).
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Genetic variation occurs through genetic recombination.
2 different methods of genetic recombination are illustrated. In the first method, Upper A Upper A, aa, Upper B Upper B, b b form Upper A Upper A, Upper B Upper B, a a, and b b. These then go on to form Upper A Upper B, Upper A Upper B, a b, a b. In the second method, Upper A Upper A, a a, Upper B Upper B, b b form Upper A Upper A, Upper B Upper B, a a, and b b. These then go to form Upper A b, Upper A b, a Upper B, a Upper B.
Which method of genetic recombination is illustrated in the diagram?
Answer:
Answer is A
Explanation:
Independent assortment
Answer:
A
Explanation:
what do you call strong winds created by the temperature differences between conviction currents? A.atmosphere B.convection currents C.jet streams D.front. which one pls help me with this problem asap!
Tracy is investigating which type of liquid will help her plants grow the
tallest. She thinks the sugar and vitamins in the juice will help the plant
grow the tallest. She plants three identical plants in identical pots and sets
them in the same place in a sunny window. She gives Plant A 50 mL of
WATER: Plant B 50 mL of JUICE; and Plant C 50 mL of COLA every day. She
records the height the plants every week. What is the INDEPENDENT
variable?
O The plants growth
O The plain water
O The different liquids
O
The sunny window
What are the building blocks for DNA?
carbohydrates
O lipids
nucleotides
O proteins
Answer:
Nucleotides
Explanation:
A nucleotide is the basic building block of nucleic acids. RNA and DNA are polymers made of long chains of nucleotides. A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base.
Elijah notices a flower and sees that its color is yellow. Which of the following describes why Elijah sees this color of the flower? (SC.7.P.10.2)
A. The flower absorbs and reflects light.
B. The flower absorbs and refracts light.
C. The flower reflects and refracts light.
D. The flower refracts and blocks light.
describe the relationship between mitosis and the other stages of the cell cycle.
girl all you gotta do is use Google..
"Actively dividing eukaryote cells pass through a series of stages known collectively as the cell cycle: two gap phases (G1 and G2); an S (for synthesis) phase, in which the genetic material is duplicated; and an M phase, in which mitosis partitions the genetic material and the cell divides."