Which of the following represents types of aquatic mammals from most aquatic to least aquatic?
Answers
Answer:
I would say polar beats
Explanation:
As polar bears actually don't have to get in water..
Not sure ok sorry
Related Questions
One of the first explanations of evolution was put forth by a French biologist, Jean-Baptiste
Lamarck. He theorized that animals, in responding to different environments, adopted new
habits. Their new habits caused them to use some organs more and some organs less, which
resulted in the strengthening of the former and the weakening of the latter. New characters
thus acquired by organisms over the course of their lives were passed on to the next
generation. His theory proposed this process of use and disuse, repeated over many
generations, was how species evolved.
He was wrong. Why?
Answers
Answer:
Traits acquired during an organism's lifetime cannot be passed
Explanation:
The law of use and disuse of organs as postulated by Jean Lamarck was wrong due to the fact that environmentally acquired characters cannot be passed to offspring.
Changes to organisms that are not the level of the gene cannot be passed to the offspring. For example, a wrestler that got big muscles due to constant work out cannot pass big muscles to his offspring. The offspring will need to work out in order to have big muscles. This is because big muscles in the wrestler is environmentally acquired.
Only changes that happen to the genome of an organism (mutation) can be passed to offspring.
The stereochemical designators α and β distinguish between:
A) enantiomers at an epimeric carbon atom.
B) enantiomers at an anomeric carbon atom.
C) epimers at an anomeric carbon atom.
D) epimers at a non-anomeric carbon atom.
Answers
Option(D) epimers at a non-anomeric carbon atom is correct. The stereochemical designators α and β are used to distinguish between epimers at a non-anomeric carbon atom, such as in carbohydrates.
How are α and β stereochemical designators distinguished?The stereochemical designators α and β are used to distinguish between epimers at a non-anomeric carbon atom. Epimers are stereoisomers that differ in their configuration at one carbon atom. Anomeric carbon atoms are those involved in forming a hemiacetal or hemiketal functional group. In the absence of an anomeric carbon, α and β designators are used to indicate the configuration of the substituents at the next available chiral center. These designators are commonly used in carbohydrates to distinguish between epimers such as glucose and galactose, which differ in the configuration at the C4 carbon atom. The α or β configuration can affect the chemical and physical properties of the molecule.
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Describe a conditional reasoning example. Be sure to describe your conditional (If A then B). Next describe one form of valid reasoning that can stem from this conditional (modus ponens or modus tollens). Finally, describe one form of invalid reasoning that can stem from this conditional (affirming the consequent or denying the antecedent).
Answers
A conditional reasoning example is a logical statement consisting of a hypothesis and a conclusion. "If A, then B" is a type of conditional statement, also known as a conditional statement. If the hypothesis (A) is true, then the conclusion (B) must be true. This is a modus ponens argument. If A is true, then B is true. A is true. As a result, B is true.
Affirming the consequent is an example of an invalid argument. If A is true, then B is true. B is true. As a result, A must be true. This is a false conclusion that cannot be logically derived. The statement "If the sky is cloudy, then it is going to rain" is an example of conditional reasoning. Modus tollens, a valid argument, can stem from this conditional. "If A, then B" is the first premise. "Not B" is the second premise. As a result, "Not A" is the conclusion. The statement "If it is not raining, then the sky is not cloudy" is an example of an invalid argument that can be derived from this conditional. If A is true, then B is true. A is false. As a result, B must be false. This is not a logical argument. It's incorrect.
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How does Anatomical evidence provide evidence of evolution
Answers
Answer:
Anatomical evidence of evolution focuses on similarities and differences in the body structures of different species. ... Similarities in anatomical structures of different species signify that the two species have a relatively recent common ancestor.
Define symbiotic Nutrition !!!!
Answers
Answer:
Symbiotic nutrition is the relationship between organisms in which they share their nutrition and shelter. This mutual relationship may or may not be beneficial to both partners.
Explanation:
An example of a symbiotic relationship is the mutually beneficial interaction between a clownfish and an anemone. The anemone's nematocysts, or stinging cells, protect the clownfish from predators and give clownfish pairs a safe place to lay their eggs.
Although the biological species concept can be useful when distinguishing among species, it is not as effective when pertaining to organisms that commonly undergo ______unavailable correct with other species and produce viable offspring.
Answers
Although the biological species concept can be useful in distinguishing among species, it may not always be effective when it comes to organisms that commonly undergo hybridization. Hybridization occurs when two different species interbreed and produce viable offspring.
In such cases, the biological species concept can be less effective because it relies on the idea that species are reproductively isolated from one another. However, if two species are capable of interbreeding and producing viable offspring, then it becomes more difficult to determine where one species ends and the other begins.
In some cases, it may even be necessary to redefine the concept of what constitutes a species in order to account for such hybridization. This is not to say that the biological species concept is entirely useless when it comes to hybridization.
It can still be used as a starting point for determining whether two organisms are likely to interbreed and produce viable offspring. However, it is important to recognize the limitations of this concept and to be aware of other factors that may come into play when trying to distinguish between different species.
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i need help to get the right question because i got it wrong
Answers
Answer:
last one
Explanation:
because they have no nucleus of any membrane bound organelles
Shown below is a simplified diagram of how the body maintains blood sugar level homeostasis. 1. Use the text in the blue boxes to label the boxes, a-g, on the diagram. 2. What enzyme is responsible for the liver breaking down glycogen to glucose? 3. In order for your cells to take up more glucose, what MUST be increased on the surface of the cells? HINT: think transport across cell membrane 4. The insulin receptor is a receptor tyrosine kinase—what kind of downstream pathways may get activated when insulin binds to the receptor? 5. Explain how diabetes results in elevated levels of blood sugar--what is not working? 6. What kind of receptor is the insulin receptor? 7. What are the typical events in a signaling pathway with this type of receptor?
Answers
Boxes labeled a-g on the diagram: a) Pancreas, b) Liver, c) Bloodstream, d) Insulin, e) Glucose, f) Cell Surface, g) Glycogen.
The enzyme responsible for the liver breaking down glycogen to glucose is glycogen phosphorylase. It catalyzes the hydrolysis of glycogen to release glucose molecules.
In order for cells to take up more glucose, the number of glucose transporters (GLUTs) must be increased on the surface of the cells. GLUTs facilitate the transport of glucose across the cell membrane by utilizing concentration gradients.
The insulin receptor is a receptor tyrosine kinase. When insulin binds to the receptor, it activates downstream pathways, including the PI3K-Akt pathway and the Ras-MAPK pathway, which regulate various cellular processes.
Diabetes results in elevated blood sugar levels due to the malfunction in glucose regulation. In type 1 diabetes, the pancreas doesn't produce enough insulin, and in type 2 diabetes, cells become resistant to insulin's effects. As a result, glucose uptake is impaired, leading to high blood sugar levels.
The insulin receptor is a receptor tyrosine kinase, a type of membrane receptor that has intrinsic enzymatic activity and phosphorylates tyrosine residues upon ligand binding.
The typical events in a signaling pathway with the insulin receptor involve insulin binding to the receptor, inducing receptor dimerization, autophosphorylation of tyrosine residues, and subsequent recruitment and activation of downstream signaling molecules. This activation leads to various cellular responses, including glucose uptake, glycogen synthesis, protein synthesis, and gene expression changes.
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Would you expect the frequencies of the alleles for PTC tasting and non-tasting to remain constant for North America over the next 200 years? Use what you know about the Hardy-Weinberg equation and the five conditions.
Write your answer here.
And I konw the answer , I just want let you guys can find it. caus I use longtime to do this work. the answer is right there
- Yes, frequencies of the allele for PTC tasting and non-tasting should remain constant for North America over the next 200 years. because it meets all the requirements necessary for Hardy-Weinberg equilibrium.
We know that when a population is in Hardy-Weinberg equilibrium it is not evolving, and allele frequencies will stay the same across generations. there are 5 conditions for population is in Hardy-Weinberg equilibrium.They are- no mutation, no gene flow, infinite population size, no natural selection and random mating. we will see how this meets all the requirements.
No mutation- yes mutation rates of the allele are very low.
No gene flow- only large migrations can change the frequencies of allele.
Infinite population size- yes population is large.
No natural selection- there is no known natural selection of the allele.
Random mating - yes mating is random because people in North America will not mate on the basis of ability to tasting PTC.
So frequencies of the allele for PTC tasting and non-tasting should remain constant for North America over the next 200 years.
Answers
Answer:
The Hardy-Weinberg equilibrium is a principle that describes the genetic makeup of a population that is not evolving. When a population is in Hardy-Weinberg equilibrium, the frequencies of alleles and genotypes remain constant over time. This principle is based on five key conditions, which include no mutation, no gene flow, infinite population size, no natural selection, and random mating.
In the case of the PTC tasting and non-tasting alleles in North America, it is reasonable to assume that these conditions are being met. First, there is no evidence to suggest that the mutation rate of the allele for PTC tasting and non-tasting is high, and therefore, we can assume that this condition is met. Second, gene flow, which is the movement of alleles between populations, is not likely to have a significant impact on the frequencies of these alleles, given that North America is a large population and there are no significant barriers to migration within the continent.
Third, the population size of North America is indeed large, and so it can be assumed that the condition of an infinite population size is being met. Fourth, there is no known natural selection that would favor one allele over the other, and therefore, this condition is met as well. Lastly, random mating is expected to occur in North America, as individuals are likely to mate randomly without any preference for the ability to taste PTC.
Based on these five conditions, we can conclude that the frequencies of the allele for PTC tasting and non-tasting should remain constant for North America over the next 200 years, as the population is expected to be in Hardy-Weinberg equilibrium. This means that the proportion of individuals who can taste PTC versus those who cannot taste it is likely to remain constant, barring any unforeseen factors that would disrupt the equilibrium.
P.S Can I get brainliest for making a whole essay? haha
What part of the Earth is it warm?
Equator
Poles
Answers
Answer: Equator
Explanation:
Dupree is writing an article on primitive people. He has to write about the use of biomass in primitive times. What should he write? A. Primitive people used stones as tools. B. Primitive people used animals as pets. C. Primitive people used wood as a source of energy. D. Primitive people used coal for cooking food.
Answers
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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Waves turn rocks into ___________________; it’s erosion.
Answers
Answer:
sand?
Explanation:
\(\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}\)
when waves turn rocks in to smaller rocks or sand... it's erosion
The average age at which an infant can sit unattended is approximately __________ months. a. two to three b. eight to nine c. three to five d. five to seven
Answers
The average age at which an infant can sit unattended is approximately five to seven months.
What is an infant?
The first year of life for a child: A baby is a child who is several years old; a minor is a person who is not of legal age. In brief, a kid is considered a baby until the age of two months, an infant until the age of one, a toddler until the age of three, and a preschooler after the age of three. As follows: Infant: 8 days to 2 years old (inclusive); infants under 8 days old are not permitted to travel; Between the ages of 2 and 11 years old. When inside the uterus, a fetus is considered to exist from eight weeks following conception until term. Infants are live births that are under 365 days old.
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Answer:
D
Explanation:
i took the test foo
1. What is science ?
A. Study of living things
B. study of nature
C. Study of law
D. All of the above
Answers
Science is the systematic study of the natural world, including living things and non-living things, through observation, experimentation, and analysis. The correct option is B.
Through observation, experimentation, and analysis, science is the methodical study of the natural world, encompassing both living things and non-living objects.
It incorporates a variety of academic fields and seeks to define fundamental ideas and cosmic rules.
Scientific understanding is founded on facts and actual data, and it is constantly improved and increased via study and inquiry.
Acquiring information, finding solutions to issues, and strengthening our comprehension of the world around us are the ultimate goals of science.
Thus, the correct option is B.
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what are the main organs within the nervous system?
Answers
The main organs of the nervous system are the brain, spinal cord, and nerves.
In biology, the anxious system is the particularly complicated part of an animal that coordinates its movements and sensory information by transmitting signals to and from specific elements of its body. The nervous system consists of the brain, spinal cord, and a complex network of nerves that helps in sending and receiving signals from different parts of the body.
Each organ in the nervous system has a distinct feature to perform and thus helps in the proper coordination of the body. The brain helps in interpreting the information, the spinal cord runs through the back and helps in transferring signals whereas nerves relay messages among the different parts of the body.
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g Successful completion of the _______________ will be noted on a students trancript. Biopsychology specialization. SONA participation. Certificate of Psychology in the Workplace. All of the above.
Answers
What would you expect to happen to a plant experiencing a lack of water in its chloroplasts?
a. Less oxygen would be released to the environment with fewer H2O molecules present
b. Less ATP and NADH would be produced without the electrons from H2O
c. Less energy would be available in the light independent phase to build carbohydrate molecules
d. All of the above
Answers
Answer:
Its A Less oxygen would be released to the environment with fewer H2O molecules present
Explanation:
Mark all of the terms that relate to the structure of RNA.
a
thymine
b
double helix
c
ribonucleic acid
d
adenine
e
cytosine
f
single helix
g
guanine
h
uracil
i
hydrogen bonds
j
deoxyribonucleic acid
Answers
in humans, brown eyes are dominant to blue and brown hair is dominant to blonde. Cross a homozygous dominant brown-eyed blonde man, with a blue-eyed and heterozygous brunette women.
Answers
A blue-eyed, heterozygous brunette woman and a brown-eyed, homozygous dominant blonde man. The child would almost certainly have blonde hair and brown eyes.
An heterozygous dominant is what?As contrasted to being homozygous, heterozygosity has two different alleles. You received several incarnations of your parents. In a dominant phenotype, the dominant allele triumphs over disadvantaged one. The dominant trait will consequently show up.
Is YY dominant homozygosity present?One chromosome from every chromosome pair is passed down by each parent. The qualities of a person are the same for both alleles. They could be homozygous dominant (HD) or genetically different (HR) (YY). The notation tt represents the homozygous state, in which the homologous pair contains the same variations of a gene.
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Study the illustration.
Which term best describes the circular, enclosing structure
formed by the cell membrane in squares 3 and 4?
O sac
O vesicle
O lysosome
O enzyme
Answers
The best term that describes the circular, enclosing structures formed by the cell membrane in squares 3 and 4 is vesicles; option B
What are vesicles in a cell?Vesicles are small membrane-bound sacs that are used by the cells to transport materials within or outside the cell.
These vesicles transport materials such as proteins and fluids surrounded by lipid bilayers to or out of the cell.
Within the cell, vesicles are produced by the Golgi apparatus to transport materials within or outside the cell.
The cell membrane also forms vesicles that enclose substances to be taken into the cell.
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A group of tudent i propoing an experiment to tudy the impact of wavelength of light on plant. They hypotheize, "When we grow plant in green light and blue light and compare the height, we expect the one grown in blue light to be taller. " What’ miing from thi hypothei?
Answers
They postulate, "We predict the plant grown in blue light to be higher when we compare the height of the one grown in blue light to that grown in green light.
Plants' vegetative growth is strongly influenced by light with a wavelength of 400–520 nm, which includes light violet, blue, and green. Far red/infrared light with a wavelength of 720–1000 nm is used for germination, however very little absorption happens in this wave band. Plants may do a variety of tasks with the aid of various coloured light. For instance, blue light aids in promoting vegetative leaf growth. Plants can blossom when exposed to red and blue light. Indoor plant growth thrives under cool fluorescent lighting.
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where is the only bone in the body that does not connect to another bone?
Answers
Answer:
Tongue
Explanation:
The only bone in the human body not connected to another is the hyoid its a V-shaped bone located at the base of the tongue
If water were a nonpolar molecule how would it’s properties be different
Answers
Which of the following species of fish have cartilaginous skeletons?
Answers
In addition to intrinsic alterations in the contractile apparatus and sarcoplasmic reticulum function, muscle fatigue relates to considerable reductions in what mineral concentration?
Answers
In addition to intrinsic alterations in the contractile apparatus and sarcoplasmic reticulum function, muscle fatigue relates to considerable reductions in calcium concentration.
Muscle fatigue is the physiological inability of a muscle to sustain or generate force. It may occur in single muscle fibers or the entire muscle at the level of the neuromuscular junction. It is characterized by a decrease in the force-generating capacity of a muscle or muscle group due to previous exercise.
The role of calcium in muscle fatigue: Calcium ions play a vital role in muscle contraction by binding to the regulatory proteins troponin and tropomyosin, causing them to change shape and expose the binding site for the actin-myosin cross-bridge. A decrease in the concentration of calcium ions in the muscle cells results in reduced actin-myosin interactions, which is one of the primary causes of muscle fatigue. As a result, calcium pumps in the sarcoplasmic reticulum and the sarcolemma actively transport calcium ions out of the cell to restore calcium homeostasis, allowing the muscle to relax and return to its resting state.
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Suppose there are 70 bacteria in a Petri dish at start time. Nine hours later, there are 230 bacteria in the dish. 1.) Express the number of bacteria, P, as a function of t hours passed. Note: Round the growth rate to 4 dec. places. P(t)= 2.) Use the model from part a to determine the number of bacteria, rounded to a whole number, in the dish after 14 hours:
Answers
The number of bacteria in the dish after 14 hours, rounded to the nearest whole number, is approximately 946.
1.) To express the number of bacteria, P, as a function of time, t, we can use the exponential growth formula:
P(t) = P0 * e^(rt)
Where P0 is the initial number of bacteria, r is the growth rate, and e is the base of the natural logarithm.
Given that there are 70 bacteria initially and 230 bacteria after 9 hours, we can use these data to find the growth rate, r. Rearranging the formula:
r = ln(P(t)/P0) / t
Substituting the values:
r = ln(230/70) / 9
After performing the calculations, the growth rate is approximately 0.2275 (rounded to 4 decimal places).
Therefore, the function representing the number of bacteria, P, as a function of time, t, is:
P(t) = 70 * e^(0.2275t)
2.) To determine the number of bacteria in the dish after 14 hours using the model obtained in part 1, we substitute t = 14 into the equation:
P(14) = 70 * e^(0.2275 * 14)
P(14) = 946
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why is it incorrect to refer to conjugation as bacterial sex? choose one or more: a. it does not involve gametes. b. the transferred dna is not required for normal cellular function. c. the transferred dna cannot replicate. d. the recipient is haploid for the transferred genes. e. it does not require physical contact.
Answers
The refer to conjugation as bacterial sex because it does not involve gametes and it does not require physical contact. Additionally, the transferred DNA is not required for normal cellular function and cannot replicate. The recipient is also haploid for the transferred genes.
The while it is a form of genetic exchange between bacteria, it is not a process that can be accurately compared to sexual reproduction. I'm happy to help with your question. The reason it is incorrect to refer to conjugation as bacterial sex is because of option A: it does not involve gametes. Conjugation is a process where genetic material is transferred between bacterial cells through direct cell-to-cell contact. Unlike sexual reproduction in eukaryotes, which involves the fusion of gametes, conjugation does not involve the fusion of bacterial cells or their reproductive units. Additionally, the transferred DNA is not required for normal cellular function and cannot replicate. The recipient is also haploid for the transferred genes.
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Construct and label a diagram of the immune complex that forms between RF in a patients serum, abd gamma globulin present on the surface of the inert latex particles; from using an RF direct slide test.
Answers
The RF direct slide test forms immune complexes between RF in patient serum and gamma globulin on latex particles.
The RF direct slide test involves the interaction between RF (Rheumatoid Factor) and gamma globulin on inert latex particles. The patient's serum, containing RF, is placed on a glass slide, and latex particles coated with gamma globulin are added. The RF antibodies in the serum specifically bind to the gamma globulin molecules on the surface of the latex particles, forming immune complexes.
These complexes appear as visible clumps or aggregates on the slide, indicating a positive result for RF. The degree of clumping is often correlated with the RF level. This test allows healthcare professionals to detect the presence of RF in the patient's serum, aiding in the diagnosis of conditions such as rheumatoid arthritis.
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plzz help
Which describes a promoter?
a. the first part of an operon that regulates where, when, and to what level a gene is
expressed
b. the part of an operon that, if attached by a repressor protein, suppresses the
expression of a gene
c. a cluster of genes that are expressed or repressed as a group
d.an enzyme that helps DNA unzip prior to transcription
Answers
Answer: A
Explanation: email for more help my address is
charlescarey0906(at symbol)g ma il.com
no spaces or caps
Answer:
a :)
Explanation: