Answer: A
Explanation:
Lobes were the beginning of arms and legs, the correct option is A.
What are lobe-finned fish?Lobe-finned fish, unlike other fish, have a core protuberance in their fins that contains many bones and muscles.
The fins are extremely flexible and may be useful for supporting the body on land, as seen in lungfish and tetrapods.
The majority of bony fish have ray fins. These thin fins are made up of skin webs that cover flexible spines. Lobe-finned fish, on the other hand, have fins that look like stumps.
The lobe-finned fishes are the ray-finned fishes' sister group. They are distinguished by paired, fleshy pectoral and pelvic fins espoused by a single bone.
Prehistoric records clearly show that terrestrial vertebrates evolved nearly 400 million years ago from lobe-finned fishes.
Thus, the correct option is A.
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All dna nucleotides contain the same ______, but different ______.
All DNA nucleotides contain the same deoxyribose and phosphate group, but different bases.
What is a DNA molecule?DNA is a biological polymer of deoxyribonucleic acid that has four different chemical groups, called bases: adenine, guanine, cytosine, and thymine.
The DNA molecule is made up of monomers called nucleotides, which is made up of the following:
Phosphate groupNucleotide basesFive carbon sugarThe five carbon sugar and phosphate group of a DNA molecule are the same but they possess different nucleotide bases.
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The __________ is also called the gradient and is equal to the change in elevation/distance, which means it changes as the river flows downhill.
A slope is also called the gradient and is equal to the change in elevation/distance, which means it changes as the river flows downhill.
What is the shift in elevation from a different location called?The shift in elevation from a different location is called the Contour interval. The shift in a ridge from one contour line to the next is always exact within the identical map.
A slope is effectively the gradient or inclined part of the land. This part of inclination is easily recognized in a hilly area.
Therefore, it is well described above.
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The major pathway of communication between the right and left hemispheres is the:.
The major pathway of communication between the right and left hemisphere is the corpus callosum.
The cerebrum is the recognizable gray covering of the human brain, appearing to comprise the majority of its mass. The cerebral cortex is the wrinkly area; the remainder of the anatomy is hidden behind that layer. The longitudinal fissure, which is a significant gap between the two sides of the cerebrum, exists. It divides the brain into right and left cerebral hemispheres, which are two independent parts. The main channel for communication between the two hemispheres of the cerebral cortex is provided by the white matter of the corpus callosum, which is located deep inside the cerebrum.learn more about corpus callosum here: https://brainly.com/question/13094825
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which type of study that a student is doing by exploring the external features of an animal
Answer:
ethology
Explanation:
I just looked it up
analyze and evaluate whether the examples are likely or not likely to result in differential reproductive success.
answer asap
The examples that most likely result in differential reproductive success are height, disease-resistant, intelligence level, colorful plumage, etc.
What is Reproductive success?Reproductive success may be defined as the methodology of the demise of genes to the next generation in a manner that they similarly can pass those genes on to the next generation.
Reproductive success is the outcome of relative fitness which include two parameters such as relative survival and relative reproduction.
Reproductive success is assumed a significant determinant of gatherings that are preferred by the strategy of natural selection.
Therefore, the examples of reproductive success are clearly mentioned above.
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What is the function of lysosomes?
Answer:
To break down bacteria
Explanation:
Answer:
it contains lytic enzymes that destroy aged and unwanted cell organelles. it sometimes destroys the entire cell.the key point is it destroys aged and unwanted cell organelles.
The cell membrane is said to be:
[tex]\huge\mathfrak\red{ANSWER}[/tex]
Semi-PermeableExplanation is in the pic
Hope it heps
Answer:
The cell membrane is said to be semi-permeable.Explanation:What is meant by a semi-permeable membrane?✈This is a membrane which allow only certain substances to go in or out of the cell.
The Cell membrane of living cells is said to be a semi permeable membrane.
Hope it helps!
Submit your air quality report for your area, showing seven days, the air quality color for each day, and each day's major pollutants. This information should have been obtained in the previous lesson. Also, write a one-paragraph explanation of where the pollutants in your area most likely come from. Part 2 Consider the area that you live in. In at least one paragraph, describe how each of the following factors could affect air pollution in your area. If none of them would affect you, explain why. Factors to consider: the presence of urban areas, topography (presence or absence of hills and mountains), summer temperatures, latitude (distance from the equator).
The amount of ozone and particle concentrations in a given area are influenced by a variety of weather-related factors, therefore the weather can have a significant impact on air quality.
What influences the air's quality?The quality of the air is influenced by a variety of climate-related elements, including temperatures, cloud cover, humidity, precipitation frequency and intensity, wind patterns, and others.
In India, more than 90% of people live in areas where the air quality is below WHO limits. The biggest sources of pollution are factories, coal-fired power plants, and automobiles.
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One half-life of a radioactive isotope has passed when:
a. all the parent nuclei have become daughter nuclei.
b. the number of daughter nuclei is twice the number of parent
nuclei.
c. the number of daughter nuclei is half the number of parent nuclei.
d. the numbers of parent and daughter nuclei are equal.
Answer:
C the number of daughter nuclei is half the number of parent nuclei.
Scientists want to track the wind speeds and precipitation for a hurricane that will affect the entire East Coast of the United States. Which weather equipment would be best to measure the impact of the storm for this entire region?
A.
an anemometer
B.
a rain gauge
C.
Doppler Radar
D.
global positioning system (GPS)
Answer:
Doppler Radar
Explanation:
Doppler radars are considered one of the best tools used for the detection of rainfall in a particular area. These radars work by way of sending beams out in a circular pattern all round the radar. Once a beam hits a hailstone or a raindrop, part of the beam is reflected back towards the radar.
Answer: C.
Doppler Radar
Explanation: ed mentum or plato
10 The table shows the scientific names and the common names of four plants.
scientific name
Althea officinalis
Hottonea palustris
Viola palustris
Viola tricolor
common name
marshmallow
water violet
marsh violet
wild pansy
Which word in their names shows that two of the plants share the greatest number of features?
A marsh
B palustris
C Viola
D violet
Answer:
A marsh the answer is A
Explanation:
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The word in their names shows that two of the plants share the greatest number of features is marsh. Therefore, option A is correct.
What is marsh ?A marsh is a type of wetland where herbaceous plant species, not woody ones, predominate. The transition between the aquatic and terrestrial ecosystems is commonly formed by marshes, which are frequently found along the borders of lakes and streams. Grass, rush, or reeds frequently rule over them.
Cattails, sedges, papyrus, and sawgrass are typical examples. Most aquatic creatures, including fish and salamanders, can survive in water with little oxygen.
In a marsh, herbaceous plants make up more than half of the vegetation, and the pH of the soil is neutral. There are fewer than 30% woody plants in the area. Throughout the growth season, a marsh has standing water for extended periods of time.
Thus, option A is correct.
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I need help. The four main types of macromolecules found in organisms are carbohydrates, lipids, nucleic acids, and ?
Answer:
Proteins
Explanation:
These are the carbohydrates, lipids (or fats), proteins, and nucleic acids. All of the major macromolecule classes are similar, in that, they are large polymers that are assembled from small repeating monomer subunits.
Which activity do you think accounts for the greatest percentage of your own personal water usage?
Answer: Taking a bath
Explanation:
From my perspective, taking a bath consumes the most water for your personal water usage. Washing your hands only takes little water, and brushing your teeth also only takes a small amount as well. As for other activities, I think they also only take a little. Taking a bath or washing your body takes the most amount, I think.
synergies, in the context of segmentation, are blank______ that can be achieved by focusing on horizontal or vertical lines within the market-product matrix.
Synergies, in the context of segmentation, are efficiencies that can be achieved by focusing on horizontal or vertical lines within the market-product matrix.
What is a synergy?A synergy simply means the interaction of organizations to produce a combined effort to achieve a goal.
In this case, synergies, in the context of segmentation, are efficiencies that can be achieved by focusing on horizontal or vertical lines within the market-product matrix.
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A simulation shows whether changing various weather conditions increases
the likelihood that a hurricane will form. Which type of model is this?
• A. It is mathematical.
•
B. It is physical.
• C. It is conceptual.
O D. It is computer-generated.
The type of model which shows the transformations of weather conditions that increase the likelihood that a hurricane will form is conceptual. Thus, the correct option is C.
What is Simulation?Simulation may be defined as a standard that is developed and designed to mimic the function and procedure of a current real-life system or genuine spectacle, so as to improve the knowledge to investigate, examine, and construct reported conclusions about it.
It shows the conceptual model of simulation because it demonstrates the association between the cause and the effect.
In the context of this question, the simulation which shows whether changing diverse weather conditions improves the probability that a hurricane will create is neglected.
Therefore, the correct option for this question is C.
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Question 7 (True/False Worth 1 points)
(05.03 LC)
The correct way to calculate population density is by dividing the total population by the land area.
O True
O False
Answer: true
Explanation:
A new allele added to the gene pool provides an advantage. The individual with the allele breeds and passes on the trait to their offspring.
This describes the evolutionary effects of what process?
A. genetic drift
B. gene flow
C. mutation
D. random mating
Which is not a symptom of cystic fibrosis
A lack of ability to strengthen muscles
B trouble digesting food
C thick layer of mucus that can block airways
Answer:
Its A
Explanation:
Lack of ability to strengthen muscles
Why was natural selection an important contribution to the theory of evolution?
Answer:
Natural selection is an important contribution to the theory of evolution because it increases an individual's ability to survive and compete and reproduce.
Explanation:
Information collected directly with the senses is
PLS HELPPP ASAP PLSSSS
The table below shows the role of different substances during photosynthesis.
Substance Role During Photosynthesis
Glucose Stores chemical energy
Water Combines with glucose to form carbon dioxide
Chlorophyll Traps sunlight
Which of the following statements would correct one of the roles listed in the table?
Glucose combines with carbon to form water.
Chlorophyll reacts with light to produce carbon dioxide.
Water combines with carbon dioxide during photosynthesis.
Chlorophyll stores chemical energy needed for photosynthesis.
Based on the number of offspring they produce at one time organisms are classified into two categories many offspring at once and a few at a time sort the characteristics based on the category they describe
Full question:
Drag each label to the correct location on the chart. Based on the number of offsprings they produce at one time, organisms are classified into two categories many offsprings at once and a few at a time. Sort the characteristics based on the category they describe.
A.Low percentage of offspring reach adulthood,
B.limited parental involvement,
C.High percentage of offspring reach adulthood,
D.Rapid maturation,
E.Parental care observed,
few offspring at once vs many offspring at once.
Answer:
At the same time, there are a few offspring
C. A high proportion of offspring grow up to be adults.
E. Observed parental care,
At the same time, many offspring
A. Only a small fraction of offspring grow up to be adults.
B. minimal parental participation;
D. Rapid maturation.
Few offspring at a time have a high percentage of offspring reaching adulthood. If a large percentage of offspring reach adulthood, the offspring are likely to be few and well cared for.
What is parental care?Parental care is seen to be unique to only a few offspring at a time. If the parents provide good care to their children, the offspring are likely to be few. It will be easier for the parent organism to care for a small number of children at once.
Many offspring at once have a low percentage of offspring reaching adulthood. Because there are so many kids at once, competition for room and food, as well as a lack of care, only a small percentage of them will reach adulthood.
Many offspring have limited parental participation at the same time. Because there were so many kids at the same time, the competition for parental care among the offspring would be strong. The parents' organism will be unable to care for the large number of children.
Rapid maturation is unique to several offspring at the same time. In order to survive, the organism will have to mature quickly. Due to the large number of children, survival will be determined by the fittest. The ability of the children to mature quickly will be aided by the survival of the fittest trait.
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Most transmembrane proteins have ___________ regions facing the intra- and extracellular fluid, and __________ regions embedded in the phospholipid bilayer.
Most transmembrane proteins have hydrophilic regions facing the intra- and extracellular fluid, and hydrophobic regions embedded in the phospholipid bilayer.
What is transmembrane protein?Transmembrane proteins are membrane proteins that surrounds the entire entity of the cell connecting both the outside and the inside of the cell.
The hydrophilic regions are the regions that are water loving which faces the intra- and extracellular fluid.
The hydrophobic regions are the regions that repels water and they are found within the phospholipid bilayer.
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During which phase of the cell is a cells DNA copied
Explanation:
Hi there!
Cell cycle has 2 phases (i.e M-phase and Inter-phase). Interphase is considered to be the longest phase. Interphase also has G1-phase, S-phase and G2-phase. In cell cycle while moving from M-phase it has two option either to go in G1-phase or G0 phase. It it goes to G0-phase it doesn't go under cell division but if it goes to G1-phase it starts to prepare materials required to replicate or copy DNA. After preparing all the material it goes in S-phase and copies DNA. It doesn't go to G2-phase until it copies DNA perfectly. Then it goes to G2-phase. In this phase it prepares material for replication of other cell organelles.
Therefore, DNA is copied in S-phase.
Hope it helps!
Answer:
S phase (Synthesis phase)
Explanation:
DNA is copied during interphase (S phase) before mitosis and just before meiosis. Mitosis is usually defined as the usual method of cell division, characterized typically by the resolving of the chromatin of the the nucleus into a threadlike form, which condenses into chromosomes, each of which separates longitudinally into two parts, one part of each chromosome being retained in each of two new cells resulting from the original cell. Meiosis is usually defined as part of the process of gamete formation, consisting of chromosome conjugation and two cell divisions, in the course of which the diploid chromosome number become reduced to the haploid (A single set of chromosomes). In human, mitosis produces diploid daughter cells which have the same number of chromosomes as the parent cell. Meiosis produces gametes (sperm or egg) which are haploid, meaning these cells have half the number of chromosomes as body cells such as skin cells. DNA is copies using a process called semiconservative replication.
More information:
What is DNA replication? What is its importance?A double-stranded DNA molecule is duplicated during DNA replication (by a variety of proteins) to create an identical double-stranded DNA molecule (so whereas the cell started with one copy, it ended up with two identical copies). Cell division would not be possible without DNA replication, hence it is crucial. In other words, either one cell would receive all the DNA while the other received none, preventing true cell division, or each cell would receive just half the DNA it requires, preventing the daughter cells from surviving (also leading to death of both daughter cells). DNA replication allows cells to replicate their whole set of DNA so that when they divide, each new cell has its own complete set of DNA. In theory, this allows for endless cell division.
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Please don't answer if you arent 100%
what is the deepest ocean zone called?
a. abyssal
b. intertidal
c. benthic
d. pelagic
Answer:
Pelagic
Explanation:
The deepest regions of the sea are Hado pelagic
Which describes the smallest basic unit of a substance that still displays the properties of that substance? Which describes the smallest basic unit of a substance that still displays the properties of that substance ?
Answer:
Atoms. An atom is the smallest unit of a pure substance or element that can exist and still retain the properties of the original substance or element.
Ozone consists of _______ molecules of oxygen, is found primarily in the ______ and protects us from ______
The blank spaces in the task content should be filled with is; Three(3), atmosphere and ultraviolet rays of the sun.
What is Ozone?Ozone is a trioxygen molecule; contained in the upper atmosphere with a sole aim of protecting biological life against ultraviolet rays of the sun. The ozone layer is however depleted to Oxygen molecule in the lower atmosphere.
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What controls differentiation? Choose the correct answer .
Gene expression controls differentiation of cells. Details about differentiation can be found below.
What is cell differentiation?Cell differentiation is a cellular process in which the cells of multicellular organisms advance in organization and acquire special organs for specific purposes.
Cell differentiation is what forms specific cells that are adapted to specific roles in multicellular organisms.
However, this process of differentiation is as a result of the expression of genes at different times, since, all cells of an organism contains the same genes.
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The most powerful fmri tests suggest that the language areas of the cortex are:
The most powerful fmri tests suggest that the language areas of the cortex are patchy, widespread, and variable.
What is a cortex?It should be noted that a cortex is the outer or the superficial part of an organ.
In this case, the most powerful fmri tests suggest that the language areas of the cortex are patchy, widespread, and variable.
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The table shows the osmotic potential of a range of sucrose solutions.
Concentration of sucrose/mol dm3
0.30
0.35
0.40
0.45
0.50
0.60
Osmotic potential/kPa
-860
-970
-1120
-1280
-1450
-1800
(a) Analyse the data in the graph and in the table to explain how the osmotic potential of tgese onion cells could be determined.
(b) Explain why the plant tissue was left in sucrose solution for 10 minutes before the cells were observed.
Explanation:
(b) Explain why the plant tissue was left in sucrose solution for 10 minutes before the cells were observed.