what photoreceptor(s) do color-blind individuals either lack or have diminished quantities of?spirillumconesrodsspirochete
Answers
Color-blind individuals either lack or have diminished quantities of cones (option c), which are the photoreceptor cells responsible for color vision.
Cones are specialized cells in the retina of the eye that are sensitive to different wavelengths of light, allowing us to perceive colors. There are three types of cones, each sensitive to a specific range of wavelengths corresponding to different colors: red, green, and blue.
Color blindness, also known as color vision deficiency, occurs when one or more types of cones are absent or not functioning correctly. The most common form of color blindness is red-green color blindness, where the red and green cone types are affected. This results in difficulties distinguishing between red and green colors.
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Related Questions
"Sexual selection" refers to a type of selection that favors
adaptations that help individuals compete with other individuals
for opportunities to reproduce. (T/F)
Answers
True. "Sexual selection" does refer to a type of selection that favors adaptations aiding individuals in competing with others for opportunities to reproduce.
The statement is true. Sexual selection is a concept in evolutionary biology that describes a form of natural selection focused on an individual's ability to successfully mate and reproduce. It specifically pertains to the selection pressures that arise from competition for mates or the choice of mates based on specific traits.
Sexual selection can operate through two main mechanisms: intrasexual selection and intersexual selection. Intrasexual selection involves competition between members of the same sex (usually males) for access to mates, such as through direct combat or displays of strength. This type of selection favors adaptations that enhance competitive abilities and increase chances of successfully mating.
Intersexual selection, on the other hand, involves mate choice by one sex (often females) based on certain desirable traits or behaviors displayed by the other sex. This type of selection favors adaptations that make individuals more attractive to potential mates, such as bright plumage, elaborate courtship displays, or other characteristics that indicate good genetic quality or fitness.
In summary, sexual selection is a type of selection that favors adaptations aiding individuals in competing with others for opportunities to reproduce. It encompasses both intrasexual competition and intersexual mate choice, shaping the evolution of traits related to mating success in various species.
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you are doing a biochemical analysis of molecules from cells from patients with a certain disease compared to cells from control patients who do not have the disease. you find that patients with the disease have unusually high levels of cytosine molecules with ch3 groups attached to their cells. which modification has taken place in the cells from the disease patients?
Answers
The phrase "epigenetic modification," also known as "DNA methylated bases," refers to the cell change associated with variable levels of cytosine methylation on the cytosine bases of ill patients.
How do disease and epigenetics interact?Inadequate epigenetic markings can cause birth abnormalities, childhood illnesses, or disease signs at various stages of life. Additionally, epigenetic systems control how an organism develops and adapts throughout its lifetime, and changes to these mechanisms may cause numerous diseases like cancer.
What are genes, and why is epigenetics important to understand?A person's appearance, susceptibility to certain diseases, and gender at birth are all determined by their genes, which are segments of DNA. Gene on/off status is affected by epigenetic modifications. Epigenetic alterations only affect which genes are activated and inactive, not the DNA code.
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Is eclogite a mineral or a rock?
Answers
Answer:
yea
Explanation:
Eclogite, any member of a small group of igneous and metamorphic rocks whose composition is similar to that of basalt. Eclogites consist primarily of green pyroxene (omphacite) and red garnet (pyrope), with small amounts of various other stable minerals—e.g., rutile.
From google btw
What is the history of GMOs, and how does it relate to selective breeding/domestication that we've been doing for thousands of years?
Answers
Answer:
In selective breeding, the individuals have to be from the same species. In GMO the scientists create new combinations of genes. In selective breeding, genes combine on their own. The first GMO was produced in 1973.
What is gel electrophoresis used for?
O A. Cutting DNA into sections
O B. Separating strands of DNA
O C. Performing reverse transcription
O D. Cloning organisms
Answers
Answer:
B. separating strands of DNA
Gel electrophoresis used for separating strands of DNA
What is electrophoresis?Electrophoresis can be defined as a technique used to separate molecules of DNA, RNA or protein molecules on the basis of their electrical charge and size
It also used to identify microorganismsIt is also used in genetic testingElectrophoresis analysis is used in forensics to compare DNA,Below are four major components of gel electrophoresis:
DNA is extractedIsolation and amplification of DNADNA added to the gel wellsElectric current applied to the gel.Learn more about gel electrophoresis:
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Which of the following CANNOT occur during a chemical reaction
Answers
Answer: No atoms can be created and no atoms can be destroyed.
(don't know if thats what you were looking for)
Explanation:
What is the function of insulin?
Answers
Insulin is a hormone produced in the pancreas (gut) .
Function:
Insulin regulates the amount of glucose in the blood. The lack of insulin causes a form of diabetes.
Explanation:
Insulin is a hormone secreted by the beta- cells of Islets of Langerhans of pancreas.
Its function is to regulate blood sugar level in the body by decreasing it. If the sugar level of the blood increases, it is detected by the pancreatic cells and it releases insulin.
Hope it helps.
If you have any query, feel free to ask.
PLEASE ANSWER AS SOON AS POSSIBLE, How can we prove that the Earth, Sun, and Moon are all moving through space?
Answers
Answer:
Yes
Explanation:
They are all moving through earth because they are always rotating around the sun, while the moon is rotating around the rotating earth.
A critical rewiew of the literature is necessary in nearly all research projects. True False QUESTION7 OLioctivity and parsimony ase toet rolated to the rigor of an invesigatoo? Truse False QUESTION B Scientific itwestigatoo is characterized by a good theoretical base and a sound methodological design. These charactetistics are both relsted to the of the invesigation Wist must be filled on the line? Rigor Precision and contidance. Otinectivity Farnemeriv.
Answers
1. True 2. True 3. Scientific investigation is characterized by a good theoretical base and a sound methodological design. These characteristics are both related to the Option a. Rigor
True - A critical review of the literature is necessary in nearly all research projects. It helps researchers understand the existing knowledge and gaps in the field, identify relevant theories and methodologies, and build upon previous studies.
True - Objectivity and parsimony are both related to the rigor of an investigation. Objectivity refers to the impartiality and lack of bias in conducting and interpreting the research, while parsimony refers to the principle of simplicity in explaining phenomena or choosing the most straightforward explanation. Both objectivity and parsimony contribute to the rigor of a scientific investigation.
a. Rigor - Scientific investigation is characterized by a good theoretical base and a sound methodological design. These characteristics are both related to the rigor of the investigation. Rigor refers to the thoroughness, precision, and reliability of the research process, including the theoretical underpinnings and the robustness of the methods employed.
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The correct question is:
1. A critical review of the literature is necessary in nearly all research projects.
True
False
2. Objectivity and parsimony are both related to the rigor of an investigation?
True
False
3. Scientific investigation is characterized by a good theoretical base and a sound methodological design. These characteristics are both related to the of the investigation What must be filled on the line?
a. Rigor
b. Precision and confidence.
c. Objectivity
d. Parsimony..
The two contributing factors for how regular physical activity lowers blood pressure includes reduced __________ nervous system activity and altered __________ function that facilitates elimination of sodium.
Answers
The two contributing factors for how regular physical activity lowers blood pressure includes reduced sympathetic nervous system activity and altered renal function that facilitates elimination of sodium.
Regular physical activity has been shown to have a positive impact on blood pressure. There are two contributing factors to how it lowers blood pressure. The first factor is reduced sympathetic nervous system activity. The sympathetic nervous system is responsible for the "fight or flight" response in our body. When we engage in regular physical activity, it helps to reduce the overactivation of the sympathetic nervous system, leading to a decrease in blood pressure.
The second factor is altered renal function that facilitates the elimination of sodium. Physical activity helps to improve the function of the kidneys, which play a crucial role in regulating sodium levels in the body. Sodium retention can lead to an increase in blood pressure. Regular physical activity enhances the kidneys' ability to excrete excess sodium, thus helping to lower blood pressure.
Regular physical activity reduces sympathetic nervous system activity and improves renal function, leading to a decrease in blood pressure. This is achieved by reducing the overactivation of the sympathetic nervous system and facilitating the elimination of excess sodium.
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Precipitation is one of the main processes involved in the water cycle. It involves the formation of water falling to the ground from clouds and transforming into either rain, snow, sleet, or hail. Which of the following properties of water can be used to explain why when water falls from clouds it is able to form a rain drop? *
A. cohesive ability
B. universal solvent
C. expansion upon freezing
D. moderation of temperature
Answers
Answer: A
Explanation: Hydrogen bonds between the water molecules on the liquid surface are relatively strong and pull on each other more than air molecules. This bond strength results in surface tension that tends to minimize the liquid surface area and produce a spherical raindrop.
Precipitation is the one of the main processes in the water cycle. It involves the formation of clouds and transforming into either rain, snow, sleet, or hail. This is possible due to the property of cohesive ability of water molecules. Thus, the correct option is A.
What is Precipitation?
Precipitation is one of the main processes involved in the water cycle. It is the liquid or frozen water which forms into the atmosphere and falls back to the Earth in the form of rain, sleet, snow, or hail. It comes in many different forms. Along with the evaporation and condensation of water, precipitation is one of the three major parts of the global water cycle.
Precipitation is achieved by the cohesive ability of the water molecules which explains the formation of clouds and rain drops. Cohesive forces are responsible for binding the compounds together such as a rain drop containing water molecules.
Therefore, the correct option is A.
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A student performs a diffusion lab using a starch/glucose solution, iodine solution, and dialysis tubing (cell membrane). The student waits 10 minutes before making observations. The student reports that iodine moved across the cell membrane. What observation helped the student draw their conclusion?
Answers
Answer:
Diffusion takes place in this process where iodine and glucose molecule diffuses through the dialysis tubing whereas the starch did not. Diffusion takes place on the basis of the size of the molecules.
Starch molecules are large in size whereas iodine and glucose are much smaller therefore they are able to diffuse. If both iodine and starch would have diffuses through the tubing the color would change into dark purple by mixing thee both molecules.
Please help with answer 3 :)
Answers
Answer:
1) Diffusion : Is the movement of molecules / ions from a region of higher to lower concentration. It may or may not occur across a semi permeable membrane.
In diffusion there is no challenge involved as it is along the concentration gradient, but in active transport movement of molecules occur against concentration gradient ie; from lower to higher concentration.
2) For active transport, energy is vital for movement, in this case protein molecules function as molecular pumps to enable the cell accumulate glucose/ions, against concentration gradient. Here metabolic energy ATP is required.
3)Facilitated diffusion is a type of passive transport in which ions/molecules cross the semi permeable membrane because permeases present in the membrane facilitate the transport.
Like simple diffusion facilitated diffusion doesn't require metabolic energy and simply occurs across the concentration gradient.
4) Osmosis : is movement of water from hypotonic solution (lower concentration) to hypertonic solution (higher concentration) through a semi permeable membrane.
The cell membrane being permeable to water allows to and fro movement of water molecules along the concentration gradient.
Darwin thought that significant evolution was much too slow to be witnessed in a human lifetime. recent experiments by biologists have _____.
Answers
Significant evolution, in Darwin's opinion, moves much too slowly to be seen in a person's lifetime. Recent biological tests have demonstrated that some populations may develop extremely quickly, with significant changes happening over many generations in the lab.
What role does Darwin's theory of evolution play?
Charles Darwin, a scientist of the 19th century, investigated the idea of natural selection. Natural selection provides an explanation for how a species' genetic features might evolve through time. This might result in speciation, or the creation of a new, separate species.The genesis and adaptations of species entered the scientific canon with Darwin's finding of natural selection. The adaptive characteristics of creatures might now be explained by natural processes, much as the occurrences of the inanimate universe, without the need for an Intelligent Designer.Learn more about Darwin here:
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wall of Gram-positive bacteria cell vihig layer of peptnloglycan a thick layer of peptidoglycan due to its thickness, an exdeTent barrier to moat molecules. ains an outer membrane containing LPS cont D contains a thin layer of peptidoglycm AND contains an outer membrane containing LPS s wah rtp filian B. Mycobacterium tuberculosis C. Staphylococcus aures 17. All the bacterial cells that result from the roplication of a single organism are said to be a A. population. B. pure culture. C lag culture. D. mutant etlture 18. The solidifying agent used most successfully in bacterial nutrient media is A. gelatin. B. peptone C. agar D. starch. 19. The simplest technique for isolating bacteria in growth media is referred to as the A. pour plate method. streak plate method. C. serial dilution method D. MPN method. the bacteria are rapidly increasing in number in the 20 in the growth curve of a bacteria population, the bacteria are rapidly increasing in mumber in the A. lag phase 3exponential (log) phase stationary phase. decline phase. E boomer phase. 21. During which phase of growth are bacteria most susceptible to antibiotics? A. lag B, stationary C. exponential (log) D. decline 22. When doing experiments with bacteria A. it is usually not necessary to standardize which stage of growth is used. B. it is best to use colonies as all the bacteria in a colony are at the same stage of growth. C it is best to use bacteria from the same stage of growth. D, the age of the bacteria is not important.
Answers
Wall of Gram-positive bacteria cell has a thick layer of peptidoglycan due to its thickness, an excellent barrier to most molecules. The outer membrane of Gram-negative bacteria contains LPS, while the cell membrane contains a thin layer of peptidoglycan.
Antibiotics are chemical compounds or compounds that restrict the growth or destroy bacteria, fungi, viruses, or parasites without damaging the host's tissues.
The questions and their respective answers are: 17. All the bacterial cells that result from the replication of a single organism are said to be a A. population. B. pure culture. C lag culture. D. mutant culture Answer: B. pure culture.
18. The solidifying agent used most successfully in bacterial nutrient media is A. gelatin. B. peptone C. agar D. starch. Answer: C. agar
19. The simplest technique for isolating bacteria in growth media is referred to as the A. pour plate method. B. streak plate method. C. serial dilution method D. MPN method. Answer: B. streak plate method.
20. In the growth curve of a bacterial population, the bacteria are rapidly increasing in number in the A. lag phase B. exponential (log) phase C. stationary phase. D. decline phase. E boomer phase. Answer: B. exponential (log) phase
21. During which phase of growth are bacteria most susceptible to antibiotics? A. lag B, stationary C. exponential (log) D. decline Answer: C. exponential (log)
22. When doing experiments with bacteria A. it is usually not necessary to standardize which stage of growth is used. B. it is best to use colonies as all the bacteria in a colony are at the same stage of growth. C. it is best to use bacteria from the same stage of growth. D. the age of the bacteria is not important. Answer: C. it is best to use bacteria from the same stage of growth.
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Water can act as either a(n) _____ or a _____.
Answers
Answer:
acid or base?
Explanation:
i used the googles
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is a car a living or non living thing? Explain why
Answers
Answer: non living
Explanation:
because it's not alive
The FitnessGram PACER Test is a multistage aerobic capacity test that progressively gets more difficult as it continues.
The test is used to measure a student's aerobic capacity as part of the FitnessGram assessment. Students run back and forth as many times as they can, each lap signaled by a beep sound. The test get progressively faster as it continues until the student reaches their max lap score.
The PACER Test score is combined in the FitnessGram software with scores for muscular strength, endurance, flexibility and body composition to determine whether a student is in the Healthy Fitness Zone™ or the Needs Improvement Zone™.
The best description of the bonds that form polypeptides and the difference between polypeptides and proteins is.
Answers
Answer:
Explanation:
A peptide is two or more amino acids joined together by peptide bonds, and a polypeptide is a chain of many amino acids. A protein contains one or more polypeptides. Therefore, proteins are long chains of amino acids held together by peptide bonds.
hope this helps :)
Polypeptides are collections of amino acid chains linked by what are known as peptide bonds. The carboxyl group of one amino acid and the amino group of another amino acid condense, forming these peptide bonds and releasing a water molecule in the process.
The size and complexity of polypeptides and proteins primarily differentiate them from each other. Polypeptides are amino acid chains that are usually less than 50 amino acids long. On the other hand, proteins are larger and more complex molecules made up of one or more polypeptide chains folded into certain three-dimensional (three-dimensional) structures known as tertiary and quaternary structures of proteins .
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15. the hormones that stimulate the ovarian cycle are secreted by the ; the hormones that stimulate the uterine cycle are secreted by the . a. anterior pituitary gland; hypothatlamus b. hypothalamus; anterior pituitary gland c. uterus; anterior pituitary gland d. anterior pituitary gland; ovary e. anterior pituitary; posterior pituitary gland
Answers
The hormones that stimulate the uterine cycle are secreted by the: anterior pituitary gland and the ovary. The correct option is D.
The menstrual cycle or uterine cycle, which is influenced by various hormones, is the time between menstruation and the beginning of the next period. Hormones that stimulate the uterine cycle are secreted by the anterior pituitary gland and the ovary.
These hormones are the follicle-stimulating hormone (FSH), luteinizing hormone (LH), estrogen, and progesterone. These hormones act on the ovary and the uterus, causing the maturation of the ovarian follicle and the preparation of the endometrium for implantation.
The follicle-stimulating hormone is responsible for initiating the growth of follicles in the ovary. Luteinizing hormone causes ovulation to occur. Estrogen is produced by the developing follicle and helps the uterine lining (endometrium) to thicken in preparation for a fertilized egg.
Progesterone prepares the endometrium for implantation of a fertilized egg by thickening the endometrial lining further. Therefore, the menstrual cycle is a highly regulated physiological process involving the endocrine system.
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8. xanthophylls and carotenes: a. are the principal photosynthetic pigments in green plants. b. are the principal sources of vitamin c for humans. c. are carotenoids. d. are normally present in the cytosol rather than in plastids. e. can substitute for chlorophylls in photosynthesis.
Answers
Carotenoids are a group of natural pigments that are widely distributed in type and are responsible for the yellow, cantaloupe, and red banner of many fruits, produce, and flowers. xanthophylls and carotenes: c. are carotenoids.
What are xanthophylls?
Xanthophylls and carotenes are two types of carotenoids.In green plants, the principal photosynthetic pigments are chlorophylls, not xanthophylls and carotenes (alternative a is incorrect).
While few carotenoids, such as being tested-carotene, can be convinced into vitamin A in the carcass, they are not a significant beginning of vitamin C for persons.
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An organism’s traits are determined by the
A. number of the A-T and G-C pairs in RNA
B. sequence of the deoxyribose sugar in DNA
C. number of thymine bases in RNA
D. sequence of the nitrogenous bases in DNA
Answers
An organism’s traits are determined by the sequence of the deoxyribose sugar in DNA option (B)
what is an organism?Any living system that performs as a separate unit is referred to as an organism. All living things are made up of cells. Organisms are classified by taxonomy into groups such as multicellular animals, plants, and fungi; or unicellular microorganisms such as protists, bacteria, and archaea
what is DNA?Deoxyribonucleic acid is a polymer made of two polynucleotide chains that form a double helix around one another. All known living things, including many viruses, have genetic material in their polymers that direct how they should function, grow, and reproduce. Nucleic acids include ribonucleic acid and DNA.
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The different shapes and function of different protiens detemined by
A.The R groups of the amino acids they contain.
B.The amino acids of the amino acids they contain.
C.the carbonxyl groups of the amino acids they contain
D.whether or not they contain any amino acids .
Answers
Answer:
The answer is B
Explanation:
I had this question on my test last week
What are 2 ways PCR is used in everyday life?
Answers
Answer:
including genotyping, cloning, mutation detection, sequencing, microarrays, forensics, and paternity testing. I hope this helps! Explanation:
hello please help i’ll give brainliest
Answers
Answer:
D an organism killing another organism for food.
Answer:
lolvyvycyvhbuubokininibu
the breaking apart of an intervertebral disk resulting in a bulge that can put pressure on spinal nerve roots are called?
Answers
The rubbery discs between both the vertebrae of the spine are made up of a softer inside (nucleus) and a more robust outer (annulus). When a section of a nuclei pushes through a tear in the annulus.
What results in a disc bulging?As they get older, discs start to show wear and tear. The cartilage of discs stiffens and dehydrates over time. These modifications can lead the outer layer of the disc to protrude rather uniformly the all way around its circumference, giving it the appearance of a hamburger with a bun that is too big.
What does a spine bulge mean?Any part of the spine can develop a herniated disc, but the lower back is where it most frequently does. It is also known as a protruding, bulging, or ruptured disc. It is among the most typical causes of sciatica, leg discomfort, and lower back pain.
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which sequence is correct for the following events? 1. fibrinogen ----> fibrin 2. clot retraction 3. activation of prothrombin 4. prothrombin ----> thrombin a. 3, 1, 4, 2 b. 3, 4, 1, 2
Answers
The correct sequence for the given events is option (b): 3, 4, 1, 2. The process of blood clotting involves a series of steps that occur in a specific sequence.
The first step is the activation of prothrombin (factor II) into thrombin (factor IIa), which occurs through a series of reactions involving several factors such as factor X and calcium ions.
This step is represented by event 3, followed by the conversion of fibrinogen to fibrin, which is catalyzed by thrombin.
This step is represented by event 4, where prothrombin is converted into thrombin, which then catalyzes the conversion of fibrinogen to fibrin.
Once fibrin is formed, it forms a mesh that traps blood cells and platelets, leading to the formation of a blood clot. This process is known as clot retraction and is represented by event 2. Thus, the correct sequence for the given events is 3, 4, 1, 2.
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Strands of replicated DNA held together
as pairs are called
_____
chromatins
chromatids
centrioles
centromeres
Answers
Answer: chromatids
Explain: Because chromatids are replicated DNA held together as pairs .
Answer:chromatids
Explanation:
If the black horse is homeozygous, what is its genotype?
Answers
Answer:
the genotype is BB.
Explanation:
How blood is transported from the vena cava to lungs?
Answers
Answer:Blood is transported from the vena cava to the lungs in the following steps:
Blood enters the heart at the right atrium.Then the atrium contracts, and
the atrio-ventricular valves open.
This causes blood to pass into the right ventricle.
Then the ventricles contract, and
the semilunar valves open.
This causes blood to pass from the pulmonary artery to the lungs.
Explanation:
a technological application that uses biological systems or living organisms to make or modify products or processes for specific use is called: group of answer choices biotechnology. biosphere outcome. metatechnology. biology
Answers
A technological application that uses biological systems or living organisms to make or modify products or processes for specific use is called biotechnology.
Biotechnology is the branch of science that deals with the usage of living systems for making human lives easier.
Through biotechnology, products are either modified or produced in such a manner through living systems that they can benefit humans.
Examples of biotechnology include copying of DNA through PCR, DNA cloning, production of vaccines etc.
Biotechnology is an emerging field and is doing wonders in helping humans to sustain life and make the world a better place.
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