Answer:
Galena, also called lead glance, is the natural mineral form of lead(II) sulfide (PbS). It is the most important ore of lead and an important source of silver. ... It is often associated with the minerals sphalerite, calcite and fluorite.
Explanation:
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What determines whether a metamorphic rock is foliated or nonfoliated?
it's 3 i think. bbjghjhgsjsishgdjdj
who disproved the theory of spontaneous generation
when inactive, the alpha subunit of the g-protein is bound to:
Answer:
the beta-gamma subunit to form an inactive trimeric protein.
Explanation:
When inactive, the alpha subunit of the G-protein is bound to a GDP molecule.
The guanine nucleotide-binding proteins (commonly called G proteins or GTPases) represent an evolutionarily conserved protein family that serves to switch on/off different signaling pathways within the cell.G-proteins are composed of three different subunits: Gα, Gβ, and Gγ subunits.When GDP is bound to Gα, this subunit remains bound to the Gβ subunit in order to form an inactive heterotrimeric protein.When GTP is bound to the G-protein, then Gα dissociates from the other subunits and triggers the activation of the G-protein.In conclusion, when inactive, the alpha subunit of the G-protein is bound to a GDP molecule.
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please give me atleast 2.
really cool question you asked but it seems you kinda made it invisible
1. How would this method or replication reduce errors (mutations) in newly constructed DNA?
Answer:
DNA polymerase proofreading
Explanation:
Proofreading by DNA polymerase corrects errors during replication. Some errors are not corrected during replication, but are instead corrected after replication is completed; this type of repair is known as mismatch repair.
What biomolecule is a cell with a lot of ribosomes attached to its rough endoplasmic reticulum probably specialized to manufacture?
Answer:Ribosomes are the cellular structures responsible for protein synthesis. When viewed through an electron microscope, ribosomes appear either as clusters (polyribosomes) or single, tiny dots that float freely in the cytoplasm. They may be attached to the cytoplasmic side of the plasma membrane or the cytoplasmic side of the endoplasmic reticulum and the outer membrane of the nuclear envelope. Electron microscopy has shown us that ribosomes, which are large complexes of protein and RNA, consist of two subunits, aptly called large and small (Figure 1). Ribosomes receive their “orders” for protein synthesis from the nucleus where the DNA is transcribed into messenger RNA (mRNA). The mRNA travels to the ribosomes, which translate the code provided by the sequence of the nitrogenous bases in the mRNA into a specific order of amino acids in a protein. Amino acids are the building blocks of proteins.
Because proteins synthesis is an essential function of all cells, ribosomes are found in practically every cell. Ribosomes are particularly abundant in cells that synthesize large amounts of protein. For example, the pancreas is responsible for creating several digestive enzymes and the cells that produce these enzymes contain many ribosomes. Thus, we see another example of form following function.
Mitochondria
Mitochondria (singular = mitochondrion) are often called the “powerhouses” or “energy factories” of a cell because they are responsible for making adenosine triphosphate (ATP), the cell’s main energy-carrying molecule. ATP represents the short-term stored energy of the cell. Cellular respiration is the process of making ATP using the chemical energy found in glucose and other nutrients. In mitochondria, this process uses oxygen and produces carbon dioxide as a waste product. In fact, the carbon dioxide that you exhale with every breath comes from the cellular reactions that produce carbon dioxide as a byproduct.
In keeping with our theme of form following function, it is important to point out that muscle cells have a very high concentration of mitochondria that produce ATP. Your muscle cells need a lot of energy to keep your body moving. When your cells don’t get enough oxygen, they do not make a lot of ATP. Instead, the small amount of ATP they make in the absence of oxygen is accompanied by the production of lactic acid.
This transmission electron micrograph of a mitochondrion shows an oval outer membrane and an inner membrane with many folds called cristae. Inside the inner membrane is a space called the mitochondrial matrix.
Figure 2. This electron micrograph shows a mitochondrion as viewed with a transmission electron microscope. This organelle has an outer membrane and an inner membrane. The inner membrane contains folds, called cristae, which increase its surface area. The space between the two membranes is called the intermembrane space, and the space inside the inner membrane is called the mitochondrial matrix. ATP synthesis takes place on the inner membrane. (credit: modification of work by Matthew Britton; scale-bar data from Matt Russell)
Mitochondria are oval-shaped, double membrane organelles (Figure 2) that have their own DNA and ribosomes (we’ll talk about these later!). Each membrane is a phospholipid bilayer embedded with proteins. The inner layer has folds called cristae. The area surrounded by the folds is called the mitochondrial matrix. The cristae and the matrix have different roles in cellular respiration.
Peroxisomes
Peroxisomes are small, round organelles enclosed by single membranes. They carry out oxidation reactions that break down fatty acids and amino acids. They also detoxify many poisons that may enter the body. Many of these oxidation reactions release hydrogen peroxide, H2O2, which would be damaging to cells; however, when these reactions are confined to peroxisomes, enzymes safely break down the H2O2 into oxygen and water. For example, alcohol is detoxified by peroxisomes in liver cells. Glyoxysomes, which are specialized peroxisomes in plants, are responsible for converting stored fats into sugars.
Explanation:
what other animals belong to the same group of invertebrates as jellyfish?
Answer:
corals and anemones
Explanation:
What would happen to this food web if the blue striped snapper became extinct in the coral ecosystem?
please help me solve these questions
Answer: 7:A
8:C
9:D
10:B
Mendels First Law: The law of segregation. During gamete formation each member of the allelic pair seperates from the other member to form the gentic consittution og the gamete.
Transcription: Is the process by which the information in a strand of DNA is copied into a new molecule of RNA.
Explanation: I checked most of them online. Im not too sure if 9 is D but it is my best guess.
A living thing that is made of one or more cells uses energy, moves, responds to its environment, adjusts, reproduces, has a metabolism, and ingest nutrients is a (an)
Metabolism
growth
organism
respiration
Plz help:
b. Compare dominant and recessive traits –
c. Compare pure and hybrid offspring –
Answer:
b. What is the difference between dominant and recessive traits? Dominant traits are always expressed when the connected allele is dominant, even if only one copy of the dominant trait exists. Recessive traits are expressed only if both the connected alleles are recessive.
c. In the simplest possible terms, purebreds are the offspring that result from mating between genetically similar parents while hybrids are the offspring that are the result of mating between two genetically dissimilar parents.
Explanation:
Answer:
b. Dominant traits are always expressed when the connected allele is dominant, even if only one copy of the dominant trait exists. Recessive traits are expressed only if both the connected alleles are recessive.
Explanation:
c. purebreds are the offspring that result from mating between genetically similar parents while hybrids are the offspring that are the result of mating between two genetically dissimilar parents.
Which of the following best represents the goals of the 1963 March on Washington organizers?
A.) To tell Congress they are doing great.
B.) To unify Americans to gather in non-violent protest to bring about real, actionable change
C.) To get the president on their side
D.) To support separate education
Answer:
D.) To support separate education
Explanation:
Answer:
B
To unify Americans to gather in non-violent protest to bring about real, actionable change
Explanation:
Originally conceived as a mass demonstration to spotlight economic inequalities and press for a new federal jobs program and a higher minimum wage, the goals of the march expanded to include calls for congressional passage of the Civil Rights Act, full integration of public schools, and enactment of a bill prohibiting ...
What is the source from where organisms get glucose?
This is apart of cellular respiration
Answer:
The source of glucose molecules in plants is the product formed by the process of photosynthesis which is ultimately stored in the parts of plants. In animals, glucose is formed by the oxidation of carbohydrates which are obtained from food.
Explanation:
In the process of photosynthesis, plants and other photosynthetic producers create glucose, which stores energy in its chemical bonds. Then, both plants and consumers, such as animals, undergo a series of metabolic pathways—collectively called cellular respiration.
help
Facilitated diffusion uses -----------------to help aid some substances across the cell membrane.
Facilitated diffusion uses transport proteins to help aid some substances across the cell membrane.
Facilitated diffusion is a passive transport process that enables the movement of specific molecules across the cell membrane with the assistance of transport proteins. While simple diffusion allows small, non-polar molecules to pass directly through the lipid bilayer of the cell membrane, facilitated diffusion comes into play when larger molecules or molecules with charges need to cross.
Transport proteins act as gateways or channels in the cell membrane. They are selective and only allow specific molecules to pass through. There are two main types of transport proteins involved in facilitated diffusion: channel proteins and carrier proteins.
Channel Proteins: These proteins form pores or channels in the cell membrane, allowing certain molecules, such as ions or water, to pass through. Channel proteins are highly specific and only allow certain substances to cross.
Carrier Proteins: These proteins undergo a change in shape to "carry" molecules across the membrane. When a specific molecule binds to the carrier protein, it triggers a change in the protein's shape that transports the molecule across the membrane. Once the molecule is released on the other side, the carrier protein returns to its original shape.
Facilitated diffusion is a crucial process for maintaining the balance of ions and molecules inside and outside the cell. It's important for the transport of nutrients, ions, and other essential molecules that may be too large or polar to diffuse directly through the lipid bilayer. The involvement of transport proteins ensures that only specific substances are transported, preventing unwanted molecules from entering or leaving the cell. Overall, facilitated diffusion is a highly regulated process that contributes to the homeostasis of the cell and the overall functioning of the organism.
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Please help I do not know what the answer is.
Answer:
On what?
Explanation:
Will mark brainliest for the answer
The iron nail produces electric current that attracts the pieces of iron is the right one.
when a cancer cell divides which of the following types of cells does it produce
Answer:
produces a new tumour
Explanation:
A new tumour can start to grow in the same area of the body where the cancer first started, or the cancer may have spread through the blood or lymphatic system to another part of the body, where it grows into a new tumour.
3
Some viruses attack cells by attaching to their outer covering, entering, and taking over
their genetic "machinery." Viruses are able
to invade cells after first attaching to their
(1) nuclear membrane
(3) genetic machinery
(2) cell membrane
(4) viral proteins
Explain your answer:
Answer:
Answer down below v
Explanation:
Viruses initially stick to cell membranes through interactions unrelated to fusion proteins. The virus surfs along the fluid surface of the cell and eventually the viral fusion proteins bind to receptor molecules on the cell membrane.
Hopefully this is correct and helps you in any way. If it doesnt, I am sorry. Have a nice day! :)
Explain what is meant by the term antibiotic.
Explanation:
Any substance that inhibits the growth and replication of a bacterium or kills it outright can be called an antibiotic. Antibiotics are a type of antimicrobial designed to target bacterial infections within (or on) the body.
Maya Is a carrier for albinism, a recessive tralt that results in the absence of the skin plgment melanin In halr and
eyes. She marries Jack, and they have four children: Zach, Olivia, Sophla, and Veronica. Veronica expresses the
tralt for albinism, but her three siblings are unaffected by the recessive tralt.
Draw a pedigree that Illustrates the famlly's tralts, and upload your pedigree.
Answer:
hereditary
Explanation:
if Maya tralt if albinism is recessive, then definitely the tralt for Jack is dominant
examples of foods that are rich sources of phytochemicals include
Answer:
Brocolli
Berries
Soynuts
Celery
Spinach
Pears
Explanation:
Six foods that are rich in phytochemicals.
WRITE THE EVOLUTION ARIES OF MICROSCOPE WITH SUPPORTIVE INOVATIVE SCIENTIST.
Answer:
12345678910
Explanation:
trust me brooo
what is the most dangerous plant known by man kind?
Answer:
1). The oleander, also known as laurel of flower or trinitaria, is a shrub plant (of Mediterranean origin and therefore, resistant to droughts) with intensely green leaves and whose leaves, flowers, stems, branches and seeds are all highly poisonous, hence it is also known as "the most poisonous plant in the world".
2). The Dendrocnide Moroides is known as "the world's most dangerous plant," with even morphine rendered ineffective against its venom, Nature reports. The shrub has numerous names including the Gympie Gympie, Stinging Bush, Queensland Stinger and the Giant Australian Stinging Tree.
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The most dangerous plant known by man kind is The Dendrocnide Moroides.
seeds from a single sexually reproducing plant are harvested and later planted under identical conditions. what results should be expected?
A leafy sea dragon's enzyme is being made in a cell.
Which two codons represent the amino acid phenylalanine?
A- UUU and UUC
B-AAU and UCC
C-UUA and UUG
D AUU and UUA
Answer:
UUU and UUC is the correct one.
Answer:
The correct answer is A-UUU and UUC
Explanation:
In the stable food chain shown below, what would you expect to happen initially if you were to suddenly double the population of rabbits?
A food pyramid, top to bottom: hawk, snakes, rabbits.
a.
The populations of the other three species would also increase.
b.
The populations of the other three species would decrease.
c.
The grass population would decrease. The snake population and hawk population would increase.
d.
The grass population and hawk population would decrease. The snake population would increase.
Please select the best answer from the choices provided
A
B
C
D
Answer:
she is wrong , its c
Explanation:
The grass population would decrease. The snake population and hawk population would increase.
The correct answer is option C. . If you were to suddenly double the population of rabbits, the grass population would decrease due to overgrazing by the increased rabbit population.
What will happen in result to it ?As a result, the snake population and hawk population would increase due to the increased availability of prey. This is known as a trophic cascade, where changes in one trophic level affect the populations of other trophic levels in the food chain.
Option A and B are unlikely as doubling the population of rabbits would not necessarily cause the populations of the other three species to increase or decrease in a straightforward manner.
Option D is incorrect as there is no direct relationship between the rabbit population and the hawk population in this food chain.
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One of the functions is
All lipids are made from smaller building blocks known as
The answer are
amino acids
fatty acids
monosaccharides
nucleotides
Answer:
Fatty acids
Explanation:
Lipides is fat in French so I just figured it makes sense.
Answer:
What is amino acids
Explanation:
Lipids are composed of fatty acids, glycerol, and other components. A compound made of small carbon compounds called amino acids.
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Miss Hawaii
Ok this is the last one
Answer: Acceleration
Explanation:
the antibiotic penicillin which made from fungi is harmfull for bacterias?
Answer:
From 1945–1955 the development of penicillin, which is produced by a fungus, along with streptomycin, chloramphenicol, and tetracycline, which are produced by soil bacteria, ushered in the antibiotic age.
Explanation:
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What determines how chromosomes line up during meiosis?