When building a spacecraft what are the 3 things NASA is most concerned about?
Answers
Answer:
If the ship is strong enough to support the launch. If the ship can withstand high pressure and temperature rates. If the material is resistant and light at the same time.Explanation:
When a spacecraft is built, many tests must be carried out over the years to prove that the spacecraft has the ability to launch into space and fulfill its mission efficiently. In addition to supporting the launch, these ships need to be built in a way that will withstand space conditions that are very different from terrestrial conditions.
For this reason, there is a concern if the ship can withstand extreme situations of temperature, pressure, gravity, weight, among others. In summary, we can say that three of the biggest concerns that NASA has in building spaceships are:
If the ship is strong enough to support the launch. If the ship can withstand high pressure and temperature rates. If the material is resistant and light at the same time.Related Questions
Replication is when DNA is?
O Mutated
O Changed
O Copied
O Destroyed
Answers
Maras dad breeds chameleons of different colors. The bright green chameleons are the best sellers. Therefore, he purposefully breeds the bright green ones together to reproduce as many as possible. This is an example of
Answers
Mara's dad is purposefully breeding the bright green ones together to reproduce as many as possible, this is an example of artificial selection.
Mara's father raises chameleons of various colours. The most popular chameleons are those that are vivid green. He deliberately crosses the bright green ones to produce as many offspring as he can.
Artificial selection can be seen in this situation.
It is the marking of attractive characteristics in plants and animals by humans, as well as the actions taken to enhance and perpetuate such characteristics in subsequent generations.
Let's define artificial selection. Artificial selection, often known as "selective breeding," occurs when humans choose desirable qualities in animals or agricultural byproducts rather than allowing the species to evolve naturally, as in natural selection.
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in the nervous system what is central nervous system?
Answers
Answer:
central nervous system
Explanation:
The central nervous system consists of the brain and spinal cord. The brain plays a central role in the control of most bodily functions, including awareness, movements, sensations, thoughts, speech, and memory.
hope it helps!
The cost of bottled water can be as much as...
Answers
Answer:1.25
Explanation:
Answer: 1.25
Explanation:
in the telomere, the 3'-end is single-stranded with a 14-16 base overhang. there are two reasons for the 3'-end being longer than the 5'-end. the first is that the g-t strand (3'-end) is extended by the telomerase enzyme. what is the second reason?
Answers
The 3'-end is single-stranded with a 14-16 base overhang. there are two reasons for the 3'-end being longer than the 5'-end. the first is that the g-t strand (3'-end) is extended by the telomerase enzyme. the second reason is the C-A strand (5'-end) is enzymatically degraded.
A telomere is the region of repetitive DNA sequences at the end of a chromosome.
They protect the chromosome ends from DNA degradation, recombination, and DNA end fusions
The overhang in telomere is due to incomplete end replication.
They gets shorten during replication to avoid gene deletions.
the daughter chromosomes lose the 3′ overhang which was present in the parent and therefore, in the absence of telomerase this will accordingly result in the telomere shortening
if telomere are long, the cellular machinery result in a bit of telomere becoming looped off each time cells replicate DNA and divide,
as telomere shorten, chromosome themselves become vulnerable to damage and cell dies
therefore, shortening of telomere is necessary.
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10 The table shows the scientific names and the common names of four plants.
scientific name
Althea officinalis
Hottonea palustris
Viola palustris
Viola tricolor
common name
marshmallow
water violet
marsh violet
wild pansy
Which word in their names shows that two of the plants share the greatest number of features?
A marsh
B palustris
C Viola
D violet
Answers
Answer:
A marsh the answer is A
Explanation:
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The word in their names shows that two of the plants share the greatest number of features is marsh. Therefore, option A is correct.
What is marsh ?A marsh is a type of wetland where herbaceous plant species, not woody ones, predominate. The transition between the aquatic and terrestrial ecosystems is commonly formed by marshes, which are frequently found along the borders of lakes and streams. Grass, rush, or reeds frequently rule over them.
Cattails, sedges, papyrus, and sawgrass are typical examples. Most aquatic creatures, including fish and salamanders, can survive in water with little oxygen.
In a marsh, herbaceous plants make up more than half of the vegetation, and the pH of the soil is neutral. There are fewer than 30% woody plants in the area. Throughout the growth season, a marsh has standing water for extended periods of time.
Thus, option A is correct.
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What type of metamorphosis does a monarch butterfly undergo?
1. complete metamorphosis
2. incomplete metamorphosis
Answers
Answer:
1. complete metamorphosis
Answer:
Complete Metamorphosis
Explanation:
This means that there are four distinct stages: an egg, larva (caterpillar), pupa (chrysalis), and adult stage.
Explain how the Periodic Table of Elements is organized. What are the patterns? Trends?
(take your time)
Answers
Answer:
The periodic table of elements arranges all of the known chemical elements using this method. Elements are arranged from left to right and top to bottom in order of increasing atomic number. Order is usually according with the increasment (Is this a word?) of the atomic mass.
Explanation:
Have a good day :)
Match the functions.
1 .
brain
1
Voluntary muscle movements are controlled by the _______.
2 .
blink
The cardiac muscle in the heart is a(n) _______ muscle.
3 .
involuntary
The _______ muscle in the legs is a voluntary muscle.
4 .
smooth
When you move your arm, you using a(n) ________ muscle.
5 .
voluntary
The involuntary muscles in your intestines are ______ muscles.
6 .
striated
When you ______ you can use either involuntary or voluntary muscle movement
Answers
Answer:
1. Voluntary muscle movements are controlled by the Brain.
2. The cardiac muscle in the heart is a(n) involuntary muscle.
3. The striated muscle in the legs is a voluntary muscle.
4. When you move your arm, you using a(n) voluntary muscle.
5. The involuntary muscles in your intestines are smooth muscles.
6. When you blink you can use either involuntary or voluntary muscle movement
When a stem cell differentiates and changes in size and shape, specific genes are being
expressed.
transcribed.
spliced.
copied.
Answers
When a stem cell differentiates and changes in size and shape, specific genes are being EXPRESSED.
Gene expression involves the flow of genetic information from genes (DNA) to RNA and proteins.
Differentiation involves first the transcription of genes to messenger RNAs (mRNAs) and second the translation of these mRNAs to proteins.
During gene transcription, a fragment of DNA called 'gene' is used as a template to create an mRNA in the cell nucleus.
Subsequently, this mRNA travels to the cytoplasm where it is then used as template to create a protein by the process of translation.
In conclusion, when a stem cell differentiates and changes in size and shape, specific genes are being EXPRESSED.
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Answer:
expressed
Explanation:
How do you think most of the CO2 got into the plants?
Answers
When the bubbling reaction stopped, the liquid was poured into another container. Did this liquid react when liver was added?
Answers
Answer:
Yes in fact it did
Explanation:
in mountainous areas of western north america, which type of plant life would you expect to find on a southern-slope of a mountain? * 5 points a) drought-tolerant plants b) coniferous pine trees c) broadleaf woody trees d) cone-bearing trees
Answers
Drought-tolerant plants may also be found on southern slopes of mountains in western North America, but coniferous pine trees are the most likely type of plant life to be found there. Option A.
Coniferous trees are trees that produce cones and needles rather than flowers and leaves. They are also known as evergreens because they retain their needles year-round. Conifers are typically found in cooler climates, such as mountainous regions or higher latitudes.What is a southern slope of a mountain.
A southern slope of a mountain is a slope that is exposed to the sun for the majority of the day. This can cause the slope to be warmer and drier than the other side of the mountain, which can affect the types of plant life that are able to grow there. Option A.
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Discuss the function of hemoglobin in human body and the consequences of hemoglobin
deficiency
Answers
Hemoglobin: The high iron-containing protein in red blood cells (RBCs) is known as hemoglobin. This gives the blood a red color.
It has two main functions: it carries oxygen from the lungs to tissues of the body, and it carries carbon dioxide from cells back to the lungs for excretion.
Functions of hemoglobin:
Hemoglobin is the main reason for the red color in our blood.Hemoglobin carries oxygen and carbon dioxide. Hemoglobin interacts with other ligands.Hemoglobin plays a crucial role in maintaining the shape of red blood cells.Consequences of hemoglobin deficiency:
Hemoglobin deficiency leads to having fewer red blood cells and causes anemia.It is found in red blood cells and acts as a carrier of oxygen and carbon dioxide.Low levels of hemoglobin in the blood cause parts of the body to function more slowly and weaken due to reduced oxygenation.Hemoglobin deficiency reduces the blood's oxygen-carrying capacity.
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can someone help me out here please
Answers
Answer:
The answer is d
Explanation:
I hope it helps you
Please mark as brainlist answer
1. Describe the movement of water and
molecules across the cell membrane.
Answers
Osmosis is the process of water and molecules diffusing across cell membranes.
Cells must transfer materials into and out of their cytoplasm through their cell membranes in order to operate. Due to the semi permeability of these membranes, certain molecules can pass through but not others.Osmosis is the process by which water moves from one region of low solute (dissolved material) concentration to another region of high solute concentration across a semipermeable membrane. The semipermeable membrane in this instance prevents the solute from passing through. This involves the same random process as diffusion and can be imagined as water traveling down its own concentration gradient.Depending on the relative solute concentrations in each, semipermeable membrane-separated solutions can be classified as hypertonic, hypotonic, or isotonic. While a hypotonic solution has a lower concentration of solutes than a neighboring solution, a hypertonic solution has a higher solute concentration. When the solute concentrations are identical, water will transition from the hypotonic solution to the hypertonic solution. Isotonic solutions lack a concentration gradient because the solute concentrations are identical throughout.So, water and molecules cross the membrane by osmosis and diffusion.
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an Association between the root noodles of leguminous plant and rhizobium SP is known as what
Answers
Answer:
The question lacks options, the options are:
A. commensalism
B. mycorrhiza
C. parasitism
D. symbiosis
The answer is D, symbiosis (mutualism)
Explanation:
Organisms of same or different species interact with one another in their natural environment. The relationship between two organisms interacting with one another is called SYMBIOSIS. Symbiosis can be of different types depending on the effect of the relationship on the involved organisms. Symbiosis can be mutualistic, commensalistic or parasitic.
Mutualism is a kind of symbiosis in which the involved organisms benefit from the actions of one another. This is a case of the association between the root nodules of leguminous plant and rhizobium species.
Rhizobium is a bacteria genus found in the soil. They form nodules by attaching to the root of leguminous plants, which helps the plants to fix atmospheric nitrogen i.e converting gaseous nitrogen to a usable form (ammonia). In return, the plants provide organic acids for the Rhizobia bacteria, which they use as carbon and energy source. Hence, the association is a symbiotic relationship and specifically a mutualistic one.
The answer is no mycorrhiza because it is an association between a FUNGUS and a plant.
Answer:
noooooooooooooooooooooo
Explanation:
really
In the electron transport chain, h protons flow down the electrochemical gradient through the pro complex (enzyme) ____________________...resulting in atp, the biological currency of energy.
Answers
In the electron transport chain, h protons flow down the electrochemical gradient through the pro complex (enzyme) ATP synthase...resulting in ATP, the biological currency of energy.
What do we know about ATP sythase?The respiratory chain generates an electrochemical gradient of protons (or sodium ions), which the ATP synthase (also known as F1F0 ATPase or complex V) utilizes to create ATP. The thylakoid membranes of chloroplasts, the inner membranes of mitochondria, and the cytoplasmic membranes of bacteria all include enzymes known as ATP synthases, which are a very large set of highly conserved enzymes. The majority of the group's members employ H+ as the coupling ion; the Propionigenium modestum enzyme is one of the few ATP synthases that can also use Na+.
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Let's say that the monkey's Amino Acid sequence was the following. Use the amino acid sequence, and the table below to figure out which three traits the monkey has.
Answers
Answer:
tall, light brown, long tail
Answer:
tail
light brown
black
Explanation:
because monkeys amino acids are tail, light brown ,black
what drives the flow of water to move from the ocean to the atmosphere?? is it
a. earth's gravity driving the flow of liquid water
b. heat energy
c. light energy
d. matter flowing into the ocean
e. earth's gravity driving the flow of matter and energy
Answers
Answer:
b. heat energy
Explanation:
Water, which is able to exist in three different states moves from one form to another. Water can move from the ocean to the atmosphere via a process called EVAPORATION. During the process of evaporation, the sun plays a major role by supplying the HEAT ENERGY required to change water from its liquid form in the ocean to its gaseous form in the atmosphere.
Water cycle of the earth helps ensure that water is not lost in any of its forms. Liquid water stored in the ocean gets evaporated as a result of heat energy into the atmosphere as water vapour.
Organisms produce their own energy or provide energy for other organisms in a food chain. Yellowfin tuna, or Thunnus albacores, are large sport fish found in tropical and subtropical waters around the world. They typically school under objects such as boats or patches of driftwood for protection from predators. Schooling under these structures also provides yellowfin tuna with easy access to smaller fish that may be foraging for food. Photo by NOAA Which trophic level does yellowfin tuna fill in a food chain
Answers
Yellowfin tuna fill in the second trophic level in a food chain.
In a food chain, the trophic level refers to each level of organisms through which energy flows, starting with primary producers and ending with apex predators. Primary producers, such as plants, produce their own energy, while other organisms in the food chain either consume other organisms or consume other organisms that have consumed other organisms. The yellowfin tuna, also known as Thunnus albacares, is a type of large sport fish that inhabits tropical and subtropical waters across the globe. They usually school under structures such as boats or patches of driftwood to avoid predators. Schooling under these structures also gives yellowfin tuna quick access to smaller fish that may be foraging for food. In the food chain, yellowfin tuna feed on smaller fish, making them secondary consumers. In turn, the yellowfin tuna are preyed upon by bigger predators, such as sharks, making them tertiary consumers. Therefore, yellowfin tuna fill in the second trophic level in a food chain.
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Biologists can grow specific plants to detoxify an area contaminated with heavy-metal pollution using the method of _______________________
. To rid an area of mosquitoes, biologists introduced a species of fish into bodies of water that feed on the mosquito larvae. This method is an example of ______________
.
Answers
Which of these gives the correct ratio for the offspring predicted by the diagram below 
Answers
Answer:2BB, 2Bb
Explanation:To do this, count up the number of each genotype in the Punnet Square. There are two BB genotypes and two Bb.
How have rising ocean temperatures affect coral communities?.
Answers
Answer:
Rising (or even falling) water temperatures can stress coral polyps, causing them to lose algae (or zooxanthellae) that live in the polpys' tissues. ... Ocean acidification slows the rate at which coral reefs generate calcium carbonate, thus slowing the growth of coral skeletons.
Explanation:
Describe and explain what happens when a spatula of potassium manganate (VII) is added to water.
Answers
Answer:
Explanation:
When a spatula of potassium manganate(VII), KMnO4, is added to water, several chemical reactions occur.
Initially, potassium manganate(VII) dissolves in water, forming a purple-colored solution due to the oxidation of water molecules by the highly reactive manganese(VII) ion:
2KMnO4 + 3H2O → 2MnO2 + K2O + 6OH-
The hydroxide ions (OH-) produced in this reaction can cause the pH of the solution to become basic.
Next, the dissolved potassium manganate(VII) can act as an oxidizing agent and oxidize any reducing agents present in the solution. For example, if the solution contains any reducing sugars, such as glucose, they will be oxidized to form carboxylic acids:
C6H12O6 + 6KMnO4 + 8H+ → 6CO2 + 6H2O + 6K+ + 2MnO2
The MnO2 produced in these reactions can cause the color of the solution to change from purple to brown. The extent of the color change depends on the amount of reducing agents present in the solution and the reaction conditions.
A genetic cross produces 48 offspring with the dominant phenotype and 52 with the recessive phenotype. If this trait is contolled by one gene with two alleles, what are the likely genotypes of the parents?.
Answers
A 1:1 phenotypic ratio happens when there are simplest two phenotype possibilities as outcomes when organisms are crossed and they both have a 50/50 danger of performing.
Write the amount of homozygous dominant (AA) and heterozygous (Aa) squares as one phenotypic institution. be counted the quantity of homozygous recessive (aa) squares as every other organization. Write the result as a ratio of the 2 groups. A count number of 3 from one institution and 1 from the alternative might supply a ratio of three:
This means that 3 offspring could have a dominant phenotype. Then, there's one offspring so as to have a recessive genotype, and accordingly the recessive phenotype. consequently, the overall ratio of dominant to recessive phenotypes is 3:1.
There may be a 100% visibility rate within the unmarried dominant phenotype. As there may be no 2nd phenotype, there is no phenotypic ratio. If we did position this result as a ratio, it'd be four: zero.
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Which lipid is most abundant in foods and in the body?.
Answers
The most abundant lipid in foods and body is : phospholipids
PhospholipidsPhospholipids are polar lipids consisting of two fatty acids , phosphate group and a unit of glycerol. They help in the regulation of cellular processes, also aids in drug delivery within the body.
Phospholipids are the most abundant lipids in the body due to its varying and very important function that it carries out in our bodies.
Hence we can conclude that the most abundant lipid in foods and body is phospholipids
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Q: What is the purpose of Mitosis? Why do cells need to divide?
(costs me 60 points)
Answers
Answer:
The goal of mitosis is to divide a cell to produce two cells, each of which is identical to the parent cell. The cell cycle is the process by which cells multiply, which is necessary for an organism to survive.
Explanation:
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100 points ,,
if a rooster lays an egg on a roof which way would it roll? left or right?
Answers
Answer:
Neither way, a hen lays an egg, not a rooster. I believe it's a trick question. Have a lovely day!
Answer: Depends
Explanation:
If the roof is flat, the egg may not roll. If the roof is a triangle, and-oh wait rooster's can't lay eggs.
What characteristics do all living things share?
A: They contain DNA
B: They are made up of many parts
C: They reproduce by mitosis
D: They need oxygen to survive