Answer:Evolution is the process by which populations of organisms change over generations. Genetic variations underlie these changes
Explanation:
Most of the animals in existence today had their origins during the:
A. Mesozoic Era
B. Cambrian Period
C. Cretaceous Period
D. Devonian Period
Answer:
answer is B
Cambrian period
Answer:
the answer is b
Explanation:
In a single-celled organism, mitosis is used for
Your answer:
A. development.
B. reproduction.
C. growth.
D. repair.
Answer:
B, Reproduction
Explanation:
........................
Mitosis is the process by which all eukaryotic organisms, such as algae and aquatic plants, reproduce. One cell splits into two cells during the process of mitosis. Thus, option B is correct.
What is the importance of mitosis in Reproduction?Multicellular creatures depend on mitosis to produce new cells for growth and to replace damaged or worn-out cells, such as skin cells.
Mitosis serves as the main asexual reproductive mechanism for many single-celled organisms.
Mitosis is a typical and significant method of asexual reproduction in unicellular (single-celled) organisms.
It also goes by the name of binary fission and is a component of the related process known as multiple fission. When an organism undergoes mitosis, it duplicates itself exactly.
Therefore, In a single-celled organism, mitosis is used for reproduction.
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which example illustrates the difference a between community and a poopulation
Answer:
All the different kinds of animals in a zoo would be a community. All of the gorillas in the zoo would be a population.
(Does that make sense to you?)
Explanation:
Community- multiple different species in a place.
Population- a single species in a place.
I'm sorry, but the way you spelled population has me crying XDD
Have a nice day! :)))
Traits depend upon heredity true or false
Answer:
Physical traits yes, personality traits false. Just depends on what type of traits.
Explanation:
Hope this helps!!
When compared to eukaryotic cells prokaryotic cells are almost always- Answers (Smaller) (More complex) (Less rounded) (Faster)
Answer:
Smaller.
Explanation:
Prokaryotes are a lot smaller than eukaryotes. So this answer may be correct.
since i have a god complex i willl give 46 points becasue i am a good god
Answer:
XD THX!
Explanation:
help help help help e help.
Answer:
True!
Explanation:
Bile is a fluid that is made and released by the liver and stored in the gallbladder. Bile helps with digestion. It breaks down fats into fatty acids, which can be taken into the body by the digestive tract.
What type of energy is present in lightning?
Electrical energy
Chemical energy
Nuclear energy
Potential energy
Answer:
electrical energy
Explanation:
As the charges that cause the energy are moving, electrical energy is a form of kinetic energy.
The type of energy present in lightning is electrical energy. When the electrical difference gets really big, it makes a way for electricity to flow out as lightning.
What type of energy is present in lightning?Lightning is one that is known to be a natural electric shock that happens during thunderstorms in the sky.
Therefore, This happens when electrical energy builds up and is released in the atmosphere. Lightning happens when there is an imbalance in electrical charge between the ground and the sky, usually because of positive and negative charges in a thunderstorm cloud.
Hence option A is correct.
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What is the chemical formula for oxygen
Answer:
O2
Explanation:
......................
the synthesis of the three fundamental polymers of life, dna, rna and protein, is template-directed. this means that:
The synthesis of the three fundamental polymers of life, dna, rna and protein, is template-directed. this means that one by one, the monomers are put together according to the order that an existing polymer specifies.
What is central dogma of life?The fundamental tenet of molecular biology explains how genetic information moves from DNA to RNA to produce a protein, a useful end product.According to the core dogma, RNA acts as a messenger to transport the information from DNA to the ribosomes, where it is used to produce all of our proteins.In the cell, the ribosomes work as factories where information is "translated" from a code into the usable component.Gene expression is the process by which the DNA instructions are translated into the functional result.Transcription and translation are the two essential phases of gene expression.Learn more about the central dogma of life with the help of the given link:
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in what mitosis stage does the cell divide in two.
Answer:
The stage of mitosis in which the cell divides in two is at the end of the telophase, through a process called cytokinesis.
Explanation:
Telophase is the final stage of mitosis and implies completion of cell division, in which the cellular structures are distributed and take their rightful place in each daughter cell.
In the telophase stage, the mitotic spindle also disappears, the cell nucleus has divided and distributed for each cell and the process of restructuration of cell membranes and endomembrane systems begins.
When the daughter cells are ready, cytokinesis occurs, with the distribution of the cytoplasm and each daughter cell is independent, surrounded by its respective cell membrane.
What is the relationship between population number and caring capacity in a stable population
Answer:
As resources are depleted, population growth rate slows and eventually stops: This is known as logistic growth. The population size at which growth stops is generally called the carrying capacity (K), which is the number of individuals of a particular population that the environment can support
hope it helped!
Where do you find the x axis
Answer:
An x-axis is one of the axes of a two- or three-dimensional graph. The x-axis is the horizontal plane of a graph in a Cartesian coordinate system, which gives a numerical value to each point along the horizontal x-axis, as well as the vertical y-axis (in a two-dimensional graph).
Explanation:
X-axis is the line where the values of y-coordinate are zero for all the values of x. Then the data points for the x-axis are: (1,0), (-1.5, 0) Therefore the equation of the x-axis is y = 0, and its graph on the x and y graph chart is shown below.
Answer:
A coordinate grid has two perpendicular lines, or axes (pronounced AX-eez), labeled just like number lines. The horizontal axis is usually called the x-axis. The vertical axis is usually called the y-axis. The point where the x- and y-axis intersect is called the origin.
Explanation:
What part of the plant performs sexual reproduction?
Leaves
Flower
Roots
Stem
Answer:Flower
Explanation:
Which of the following options BEST describes the conditions present in the origins of planet Earth?
The oceans of early Earth contained complex organic molecules that formed simple inorganic molecules over time.
Earth's early atmosphere contained oxygen but no ozone and high amounts of UV radiation.
Before cyanobacteria, Earth's early atmosphere had high amounts of UV radiation, no ozone layer and no oxygen.
Protists were the first organisms that evolved and provided oxygen for the atmosphere.
Before cyanobacteria, Earth's early atmosphere had high amounts of UV radiation, no ozone layer and no oxygen.
Incidence without oxygen in the atmosphere as well as the ozone layer, UVC and UVB levels would be extraordinarily high, requiring life to exist in dimly lit, gloomy surroundings. The development of photosynthesis led to the formation of the ozone layer and boosted atmospheric levels of free oxygen.
Cyanobacteria- Photosynthesis is carried by by the cyanobacteria taxon of microbes. They are not algae, despite the fact that they were once referred to as blue-green algae. It belongs to the phylum of bacteria and includes over 1500 distinct species. According to the endosymbiont theory, cyanobacteria are the ancestors of chloroplasts (plastids). Their DNA profile demonstrates this.
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What is a good way to keep yourself warm at night? And what is a good temperature to sleep at?
Answer:
A GOOD WAY IS TO TURN IT UP TO AROUND 74 OR 75.
Explanation:
BEST TEMP NO DOUBTS.
hope this helps mate.
Augusto is a farmer who encounters several bones while plowing his field and wants to know if the bones are human. Which type of anthropologist should he call?.
Augusto should call a physical anthropologist to know if the bones he encountered on his farm are human bones.
Who is an anthropologist?An anthropologist is a person versed in the holistic scientific and social study of humanity, mainly using ethnography as its method.
Anthropologists study the origin, development, and behavior of humans by examining the cultures, languages, archeological remains, and physical characteristics of people in various background.
According to this question, Augusto is a farmer who encounters several bones while plowing his field.
However, to know if these bones are human's, Augusto should call a physical anthropologist because they deal with the evolution of humans, their variability, and adaptations to environmental stresses.
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Why is revision an important part of the engineering process? Explain and tie in any experience you have had inside or outside of class.
plss help me with thiss plsssss
Revision is an important part of the engineering process because it helps to record the status of the object at that particular day before they are dent out to other people.
What is Engineering?This is a field which is characterized by the use of scientific knowledge in other to build machines, structures etc. These are used to solve different types of problems and help to make work easier.
Engineering comprises of different processes such as revision and it is important because it helps to take a picture of the history of the product at the particular day and time in which it was sent out for testing.
This helps to eliminate many mistakes and arguments and save people from litigation as a result of the differences in the product should in case it was manipulated and detected when it was returned.
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effects on survival of bap1 and pbrm1 mutations in sporadic clear-cell renal-cell carcinoma: a retrospective analysis with independent validation.
A high-risk BAP1-mutant group and a favorable PBRM1-mutant group have been identified as mutation-defined subgroups of clear-cell renal cell carcinoma with differing clinical outcomes.
Why is the PBRM1-mutant group more advantageous and the BAP1-mutant group more risky?Different clinical behaviors are displayed by clear-cell renal-cell carcinomas. However, it is unknown what molecular genetic processes underlie these behaviors. We found that PBRM1 and BAP1 mutations are largely mutually exclusive and that BAP1 is mutated in roughly 15% of clear-cell renal-cell carcinomas.
145 patients from the University of Texas Southwestern Medical Center in the United States who had primary clear-cell renal cell carcinoma and known PBRM1 and BAP1 mutation status were evaluated between 1998 and 2011 for this retrospective investigation. We used The Cancer Genome Atlas (TCGA second )'s independent cohort (n = 327) for validation.
Those with BAP1-mutant tumors had considerably lower median overall survival in the UTSW cohort than patients with PBRM1-mutant tumors. Despite being rare (three in the UTSW cohort and four in the TCGA cohort), patients with mutations in both PBRM1 and BAP1 had the lowest overall survival.
These findings lay the groundwork for a molecular genetic classification of clear-cell renal cell carcinoma that may have an impact on future treatment choices.
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Select each correct answer. More than one answer may be correct.
Which of the following affects the force of gravity between two objects?
the objects' volumes
the distance between the objects
the objects' densities
the objects' masses
Answer:
I think it's A and D
Explanation:
Answer:
number 2 and number 3
Explanation:
What is the experimental setup?
Which domain(s) include(s) only prokaryotes?
A. Bacteria only
B. Bacteria and Archaea
C. Archaea only
D. Eukarya only
Each example of rock weathering can be categorized as either physical weathering or chemical weathering. Drag each item to the correct location. (2 points)
Answer:
Here are the answers
Explanation:
Physical Weathering:
Wind blowing off bits of rock over time
A prairie dog burrowing a hole in a rock
An insect digging a hole in rock for its home
Chemical Weathering:
Limestone in rock dissolving when acid rain flows across it
Bits of iron in rock rusting when exposed to oxygen and water
certain metals in rock oxidizing by exposure to air
I hope this is right
high mass stars include what ?
Answer:
High mass stars have very high-core temperatures, crushing stellar-core pressures, and are very big and very bright.
Explanation:
Identify and explain if cloning is a form of asexual reproduction or sexual reproduction.
Answer:
asexual
Explanation:
Label the transverse wave below
Students observed a plant left by a window over several days. The plant was watered daily. After three days, the plant began to grow towards the window.
Why is the plant growing towards the window?
Heat from the Sun caused the plant to grow towards the window.
⊝
The plant is leaning towards the window to get fresh air.
⊝
The plant is responding to the stimulus of sunlight.
⊝
The plant is responding to water in the air and growing towards it.
Answer:d
Explanation:
A.
Heat from the sun is the reason plants grow towards the window if they are inside.
Hope this helps
A few brown beetles left their population (the first population) and migrated to a population of green beetles (the second population). Which of the following occurs as a result?
If gene flow occurs between both populations, then genetic variability between populations will decrease, and variability within the second population will increase. Brown beetles introduce new genetic charge to the second population.
What is gene flow?
Gene flow is an evolutive force, together with natural selection and genetic drift.
Gene flow occurs in populations that express migration. This is, individuals from one population migrate to the other and vice versa.
For gene flow to occur, migration is not enough. Successful mating events must also occur, through which individuals from one population get to mate with individuals with the other population, and produce fertile offspring.
This is how the following generations will get genes from both populations.
Gene flow has the opposite effects of genetic drift.
It increases variability within each populationIt reduces genetic heterogeneity between populations
Different populations experiencing gene flow tend to be genetically more similar because they are interchanging genetic material.
Note: Since I could not find the complete question with the options, I will propose the result of the exposed situation.
The exposed situation of a few brown beetles leaving their population and migrating to another population of green beetles might be an example of gene flow.
If this is the case, once in the second population, brown beetles will mate with green beetles and produce new generations with a gene mixture.
Genetic variability between the first and second populations will decrease, and variability within the second population will increase.
Brown beetles introduce new genetic charge to the second population.
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Which type of wave can scientists study the
path of to find clues about what materials or
gaps lay deep underground?
A. seismic wave
B. visible light wave
C. tidal wave
Answer:
A: seismic wave
Explanation:
visible light couldn't penetrate the ground, and a tidal wave is from a tide in the ocean so I doubt it'd be any help to find what materials or gaps plus (correct if wrong) I don't think they've made any instruments to track tidal waves, but they do have seismometers
12. glycogen phosphorylase is activated in vigorously active muscle without significant changes in intracellular [camp]. explain.
glycogen phosphorylase is activated in vigorously active muscle without significant changes in intracellular [camp].
phosphorylase kinase is activated by increased concentrations of Ca 2+ or by the phosphorylation by cAMP dependent protein kinase A .
What is the role of glycogen phosphorylase ?The main role of Glycogen Phosphorylase is to provide phosphorylated glucose (G-1-P) which can be metabolize in glycolysis and produce ATP for the cell.
This phosphorylated glucose comes from glycogen and cellular phosphate, Glycogen is a polymer of non-phosphorylated glucose molecules.
Glycogen phosphorylase is an therapeutic target for type 2 diabetes which show great influence on blood glucose levels through the glycogenolysis pathway.
It acts on the reaction at the initiation of glycogen degradation, where glucose can be produced from glycogen. Glycogen phosphorylase causes phosphor clastic cleavage into glycogen, and produces glycogen-1-phosphate.
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