Answer:
electrons carry negative charge, protons carry positive charge
) An allosteric interaction between a ligand and a protein is one in which: (3 pts) A) binding of a molecule to a binding site affects binding of additional molecules to the same site. B) binding of a molecule to a binding site affects binding properties of another site on the protein. C) binding of the ligand to the protein is covalent. D) multiple molecules of the same ligand can bind to the same binding site. E) two different ligands can bind to the same binding site.
Answer:
B) binding of a molecule to a binding site affects the binding properties of another site on the protein.
Explanation:
In an allosteric interaction between a protein and a ligand, the ligand binds to a site in the protein. As a result, there is a change in the properties of other active sites on the protein. These active-site changes may or may not allow the protein to bind to other molecules. There is a change in the protein that affects the affinity of the active site for other molecules. The affinity on the active site increases if the protein binds to an activator and decreases if the protein binds to an inhibitor molecule.
Grass (that is healthy) looks green because Group of answer choices it emits green light and absorbs other colors. it reflects green light and absorbs other colors. it absorbs green light and emits other colors. it transmits green light and emits other colors.
Answer:
it reflects green light and absorbs other colors.
Explanation:
The term pigment derives from the Latin pigmentum, which means the substance that produces color.
Pigments provide color to cells and tissues.
In vegetables, we can find different pigments, such as chlorophyll or carotenoids, among others. Plants use these pigments during the photosynthesis process to absorb sunlight and fixate carbon dioxide. Stem, flowers, and other tissue have pigments in their cells that define the organ´s colors.
Pigments are chemical molecules that produce color by the selective absorption of sunlight. Whenever white light meets a pigment, some wavelengths are absorbed by the pigments while others are reflected. The color expressed is the product of the reflection. The reflected spectrum is perceived as color and determined to be the pigment color or the color of an object or organism.
The color that tissue or vegetal organ express will depend on the pigment concentration or the combination of many of them.
The green color is ordinary in most vegetable species. Chlorophyll is responsible for this coloration, present in almost every vegetable species. This pigment absorbs blue and red wavelengths. But they reflect spectrums of green wavelengths, meaning that the expressed color is green in different tones.
A tech is using the H (flagellar) antigen to serotype a suspected Salmonella species. The results of the serotyping are agglutination with one well that indicates a group of possible serotypes, not one particular serotype. Quality control passed. Why did this occur
Some Salmonella H antigens can occur in multiple strains and serotypes
An antigen (Ag) is any molecule/structure such as, for example, a molecule present on the surface of a pathogenic microorganism, that can be bound by a specific antibody and/or B-cell receptor. The Kauffmann–White classification scheme is a system that was adopted for use in 1934 in order to categorize different serotypes of the bacterial genus Salmonella, based on their somatic-surface antigens. The system is a practical (diagnostic) method based on the variation in the somatic (O) and flagellar (H) antigens present in the cell wall of Salmonella species. In this classification system, 'O' antigens are determined based on oligosaccharides which are associated with lipopolysaccharide, while the "H" antigens are distinguished by the protein content of the Salmonella flagella.Learn more about this topic here:
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what is the name of reproduction part in femal
A researcher is studying three wolf packs that hunt in the same area. The first pack preferentially kills mature, healthy moose; the second pack preferentially kills sick, old moose; and the third pack tends to kill an equal number of healthy and sick moose. Which pack likely plays the greatest role in determining the birth rate of the moose population
Answer:
The correct answer is - the pack that preferentially kills mature, healthy moose.
Explanation:
The birth rate is the number of individuals born in a population in a particular amount of time period. The birth rate can be determined by the individual born in a particular time period and that depends on how many healthy and viable individuals in a population can reproduce and produce new individuals.
Old and sicks are not the ones who can actively participate in reproduction and, however, if the number of healthy and mature individuals are killed there would be fewer newborns in the population.
Thus, the correct answer is the pack that preferentially kills mature, healthy moose.
PLS HELP ASAP 4 EXAM Which field of biology has caused
some ethical concerns?
A. biotechnology
B. ecology
C. molecular biology
D. evolution of disease
Answer:
D. evolution of disease
Explanation:
Biotechnology's growth and regulation has sparked debate in a variety of academic disciplines, including economics, law, politics, and even history. The genetic engineering of living cells, plants, animals, and humans, in particular, has raised ethical concerns.
OAmalOHopeO
The presence of Reed-Sternberg cells in an
individual indicates that the person has
O mononucleosis.
O Hodgkin's lymphoma.
O non-Hodgkin's lymphoma.
O lupus.
Answer:
The presence of Reed-Sternberg cells in an individual indicates that the person has [tex] \small{\underline {\boxed{ \sf{Hodgkin's \: \: lymphoma.}}}}[/tex]
Passive transport:
requires ATP.
appears to stop when equilibrium is reached.
contains molecules which move up the concentration gradient.
requires protein channels.
Answer:
Passive transport requires protein channels
Explanation:
What happens with the release of DDT into the food chain zooplankton -- small animal -- large animal-- bald eagle? And what process is involved
Answer: The process involved is called BIOACCUMULATION.
Explanation:
Dichlorodiphenyltrichloroethane (DDT) is a type of pesticide used in agricultural control of pests. It's use has been restricted because of its involvement in bioaccumulation. The pesticide is known for accumulating in food webs and persisting in soil and river sediments. This leads to it's accumulation (build up) in living organisms.
Pesticides and fertilizers are used in crop cultivation. Rain and irrigation water wash these chemicals, especially the soluble nitrate fertilizers, into the ground water and they eventually get into rivers, lakes and seas.
These pesticides such as DDT are synthetic organic compounds that are non-biodegradable. When they are washed into the ground water, they accumulate in the bodies of plants (zooplankton). These are eaten by small fishes which are in turn consumed by larger fishes. These large fishes are hunted as prey by the bald eagle.
DDT builds up in these bald eagle causing them to lay eggs with thin shells. As a result, the eggs break easily causing a fall in the eagle population.
Question 1 (True/False Worth 1 points)
(01.02 LC)
Sustainable practices refer to the practices, services, and guidelines we develop to protect ourselves within our environment.
True
False
Answer: True
Explanation:
Sustainable practices refer to the practices, services, and guidelines that are developed in order to protect ourselves within our environment.
Sustainable practices support human, ecological, economic and human health. With sustainability, it's agreed that there are finite resources and they should be used conservatively and maintained for future generations.
The statement is true.
Answer:
False; I did the quiz and I answered "True" and got it incorrect
The blood is injected with a special dye that stains the areas where it passes through. Where in the brain and spinal cord would you expect to see the stain?
Answer:
脑循环是特殊区域循环的最重要组成部分。例如人脑的耗氧量约为全身耗氧量的1/5，人脑血流量约占全部心输出量的13%～15%。充足的脑血流量是lanation:
A mitosis inhibitor is a medication that is designed to prevent mitosis in certain cells. Why would these be helpful in the treatment of tumors
Answer:
because cancer cells are able to grow and eventually spread through the body (metastasize) through continuous mitotic division. Thus, cancer cells are more sensitive to inhibition of mitosis than normal cells.
Explanation:
Does skeletal connective tissue have nucleus?
Answer:
Fibroblasts are the most common cell type of connective tissue. They produce both fibers and amorphous ground substance. Typically only the oval nuclei are visible. ... In the tendon, fibroblasts are seen as elongate nuclei found sandwiched between collagen fibers .
*EARTH SCIENCE CLASS*
1. Scales are used to figure out the ratio of the distance in the map to the actual distance between locations.
A. what is the name of two different types of scales found on maps?
B. how does each scale work?
Answer:
Bar and lexical.
Explanation:
Bar and lexical are the name of two different types of scales that are found on maps. Bar scales are used more frequently in the maps because they represent or show the distance ratio visually instead of in words, while on the other hand, lexical scales may be expressed in words, as a ratio, or as a fraction. Examples are 1:10,000 or 1/10,000. Using map scales is very important in the real world if you want to find out the distance you are traveling.
help can be needed please!
Answer:
can't see
Explanation:
i can't see the pic
Assume that you are a genetic counselor and that a couple seeks genetic counseling from you. Both the man and the woman are phenotypically normal, but the woman is heterozygous for a pericentric inversion on chromosome 8. The man is karyotypically normal. What is the probability that this couple will produce a child with a genetic syndrome as the result of crossing over within the pericentric inversion
Answer:
50%
Explanation:
An inversion is a genetic phenomenon that occurs when a chromosome breaks into two genomic sites, thereby the resulting DNA fragment is reversed and subsequently inserted into the same chromosome location. A pericentric inversion occurs when the chromosome breaks are located on opposite arms or sides of the chromosomal centromere. Moreover, crossing over (or recombination) is the exchange of genetic material between non-sister chromatids during gamete production. An inversion carrier, as in this case the woman who is heterozygous for a pericentric inversion, can produce four types of gametes. If there is no crossing over, half the chromatids will produce normal gametes (without the recombination event) and half the chromatids will produce balanced gametes that will transmit the pericentric inverted chromosome. On the other hand, if there is crossing over, half the chromatids will have one duplication on the first chromosome arm together with a deletion on the second chromosome arm, and the remaining half of the chromatids will have an inverse arrangement.
Write note on pearl formation
Answer:
A pearl is a hard, glistening object produced within the soft tissue (specifically the mantle) of a living shelled mollusk or another animal, such as fossil conulariids. Just like the shell of a mollusk, a pearl is composed of calcium carbonate (mainly aragonite or a mixture of aragonite and calcite)[3] in minute crystalline form, which has deposited in concentric layers. The ideal pearl is perfectly round and smooth, but many other shapes, known as baroque pearls, can occur. The finest quality of natural pearls have been highly valued as gemstones and objects of beauty for many centuries. Because of this, pearl has become a metaphor for something rare, fine, admirable and valuable.
I HOPE THIS WILL HELP YOU IF NOT THEN SORRYHAVE A GREAT DAY :)
What is the correct order of structures in a chromosome from smallest to largest? nucleosome, nucleotide, histone, tight helical fiber, supercoil, chromosome nucleotide, histone, nucleosome, tight helical fiber, supercoil, chromosome nucleotide, nucleosome, histone, supercoil, tight helical fiber, chromosome nucleotide, histone, tight helical fiber, nucleosome, chromosome, supercoil
Answer:
nucleotide, histone, nucleosome, tight helical fiber, supercoil, chromosome.
Explanation:
Genomics refers to the scientific study of genes (DNA) found in living organisms such as humans and animals.
A genome can be defined as the complete set of hereditary instructions that is typically found in the deoxyribonucleic acid (DNA).
The complex structures of deoxyribonucleic acid (DNA) and protein found in the cell nucleus are generally referred to as chromosomes.
Chromosomes are found in the cell nucleus and are comprised of deoxyribonucleic acid (DNA), histone proteins, etc. Thus, they are used to store genetic informations in living organisms.
The human somatic cell is made up of 46 chromosomes which are sub-divided into 22 pairs of autosomes and a pair of sex chromosomes (X and Y). An autosome is one of the numbered chromosome that is typically not a sex chromosome.
In Genetics, the correct order of structures in a chromosome from smallest to largest are; nucleotide, histone, nucleosome, tight helical fiber, supercoil, chromosome.
A child is suffering from fever but the doctor cannot immediately pinpoint the ailment on the basis of this one symptom. Explain why. Also mention another two such general symptoms.
the child can also have sore and or maybe stomach problems. it can be indigestion
so there are various conditions one can go through and this may take time for a doctor to discover or bring to light the medical condition that the person I'd goin thru
Explanation:
please notify me if I'm incorrect
The receptor of sound waves in the ear is the
O a. pinna.
O
b. ossides.
O c. organ of Corti.
O d. tympanic membrane.
Please help me to fill in the blanks. Thanks!
Sediments minerals rock remains sedimentary millions
When animals and plants die, their bodies fall into __________. Some of these decays while some become part of ______________ rocks. Rock layers build up and the rock becomes a solid. The ______________ in the rock replace the ________________ in parts of dead bodies. This takes place over _______________ of years. The_______________ of living organisms that have changed to ________________ are fossils.
When animals and plants die, their bodies fall into sediments. Some of these decays while some become part of fossilized rocks. Rock layers build up and the rock becomes a solid. The minerals in the rock replace the soft parts in parts of dead bodies. This takes place over millions of years. The remains of living organisms that have changed to stone are fossils.
What is the function of the Calvin cycle?
it generates NADH for use in mitochondrial ATP production
it produces NAD+ from NADH to keep glycolysis going when oxygen is absent
it fixes atmospheric carbon dioxide gas
it creates a proton gradient
Answer:
it generates NADH for use in mitochondrial ATP production
The function of Calvin cycle is to generate NADH for use in the mitochondrial ATP production in the process of cellular respiration. Thus, the correct option is A.
What is Calvin cycle?
Calvin cycle is also known as the C3 cycle or citric acid cycle. It is the cycle of chemical reactions where the carbon atom from the carbon cycle is fixed into various different molecules of sugar. It occurs in the chloroplast of the plant cell.
Calvin cycle is an important mechanism as it involves performing chemical reactions by plants to fix carbon from CO₂ into the three-carbon sugars (glyceraldehyde). Afterward, the plants and other creatures can transform these three-carbon compounds into amino acids, nucleotides, and other more complex sugars like starches. Calvin cycle generates NADH for use in the mitochondrial ATP production.
Therefore, the correct option is A.
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Which is a possible outcome of global warming?
A. Hurricanes and other extreme weather will increase
B. Most crops will grow better in warmer climates
C. Sea levels will drop all around the world
D. Disease will not be able to spread as quickly
A possible outcome of global warming is that hurricanes and other extreme weather events may increase. Therefore, the correct statement is option A.
What causes an increase in the temperature of Earth?The gradual rise in the Earth's atmosphere's average temperature that results from the buildup of greenhouse gases, primarily carbon dioxide, released by human activities like the burning of fossil fuels and deforestation is known as global warming.
The Earth's climate and weather patterns may alter as a result of this temperature rise, which might result in more frequent and severe weather events like hurricanes, floods, and droughts.
Due to alterations in precipitation patterns, increased pest pressure, and other factors, it is unlikely that most crops will grow more effectively in warmer climates. Because of the melting of glaciers and ice caps, sea levels are more likely to increase, resulting in floods in low-lying places.
Therefore, a possible outcome of global warming is that hurricanes and other extreme weather events may increase.
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Which of the following is a start codon?
A.UAG
B.AUG
C.UAA
D.UGA
Answer:
AUG
Explanation:
you can use a codon chart to help or double check.
B) you can use a software to check
PLLZZZ HELP!!
Diagram the alternation of generations life cycle of a plant. Put the following terms in order and type arrows (>) between the terms to show which direction the life cycle is going: sporophyte, gametes, gametophyte, spores, meiosis, sporangium. Label which parts are haploid and which parts are diploid. You may also list the terms in numerical order.
Answer:
i know that gametes and meiosis are both haploid, but i havent heard of the others yet, i cant help you there :/
We have all heard about earthquakes or the cyclones that attack the coastal regions. Think of as many different ways as possible in which people's health would be affected by such a disaster if it took place in our neighbourhood. (a) How many of these health -related events would occur long after the actual disaster, but would still be because of the disaster? (b) How can it affect the life of people if in case of a pandemic?
Answer:
The disease spread to the neighbourhood.
Explanation:
If the disaster such as earthquake and pandemic etc occurs in the neighbourhood so it also affected the health of the people of that region as well as the people that lives in the neighbourhood. In the case of pandemic, the disease spread to the neighboring area and affect the health of people while on the other hand, in earthquake the people of neighbourhood is also affected if the intensity of earthquake is higher.
Then write how sponges an Cnidarians are alike and different?
Differences:
Cnidarians have groups of similar cells that work together as tissues, while sponges have no tissues, only disconnected regions of specialized cells.
Similarities:
They contain nematocyst (cells that sting)
some are sessile/free swimming
Some corals have a symbiotic relationship with algae, they need to grow in shallow waters so that light can penetrate for the algae to photosynthesize.
As an adaptive immune response progresses, the production of variant antibodies that compete more effectively for antigen occurs, and B cells producing these antibodies are preferentially selected on the basis of their improved binding to antigen. This phenomenon is referred to as _______.
Answer:
a
Explanation:
1. Most students in Britain take the GCSE when ____________.
A. They are 11 years old
B. They are 16 years old
C. They finish grade 10
D. They begin grade 11
2. What is the first thing you’ll notice when you visit almost any school in Britain?
A. The school logo
B. The school gate
C. The school playground
D. The school uniform
3. What do most teenagers in Britain prefer to wear?
A. Trendy labels
B. Expensive uniforms
C. Fashionable hats
D. Economical trainers
4. The word ‘highlight’ in paragraph 2 is closest in meaning to __________ .
A. Confuse
B. Remark
C. Emphasise
D. Decrease
5. According to the passage, which of the following statements is NOT true?
A. Students in Britain can take 8 subjects at the GCSE.
B. Most British teenagers spend 2-3 hours watching TV after school.
C. Most 16-year-old students in Britain don’t like school uniforms.
D. Many British teenagers judge their friends by their shirts or trainers.
Answer:
1.c
2.d
3 .d
4.a
5.c
this is all I got
According to the cell theory, which describes cells?
Answer:
Living organisms are not created spontaneously
Explanation:
All living organisms are made out of cells, cells are the basic unit of life, and cells come from preexisting cells
