Question 1/4
According to the Big Bang theory, what happens if you reverse the galaxy motion and go back in time?
A. Everything would become condensed into one dense point
B. Some things would remain the same, while others go back
C. Everything would be the same as it is today.
D. You would find everything in a large cloud of cold isolated gas
According to the Big Bang theory, if you reverse the galaxy motion and go back in time A. Everything would become condensed into one dense point.
The Big Bang Theory simply explains how the universe was formed from a large explosion. According to the Big Bang theory, the universe was formed as a result of the explosion of particles.
The reverse of the Big Bang Theory simply means the scenario where the expansion of the universe reverses. This is also called the Big Crunch. This will lead to the recollapse of the universe.
In this case, the cosmic scale also reaches zero. Then, everything would become condensed into one dense point.
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Mitosis is the process through which a cell replicates its DNA and produces two identical daughter cells. If a cell undergoing mitosis is currently in anaphase as shown in the diagram below,
The duplicated genetic information found in a parent cell's nucleus is divided into two identical daughter cells during the fourth stage of mitosis, referred to as anaphase. Thus, option B is correct.
What mitosis process through which cell replicates its DNA?The sister chromatids are able to separate because the protein “glue” holding them together is degraded. Each chromosome now exists on its own. The opposing ends of the cell are drawn to the chromosomal pairs in each pair.
The replication fork is connected to a number of proteins that aid in the The way DNA polymerase creates new strands is mostly by include nucleotides that complete each (template) strand. The S-stage of interphase is when DNA replication happens.
Therefore, Sister chromatids split from one another and are drawn to the opposite ends of the cell during anaphase.
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3.1
Suggest which leaf carries out more photosynthesis and explain why.
Explanation:
Leaf that are really green, because they contain Lots of chlorophyll in the chloroplast which is the main site for photosynthesis
Please help this is science
[tex]\sf\purple{23}[/tex] (No. of chromosome pairs) x 2 = [tex]\sf\red{46}[/tex] (No. of chromosomes) ✅
................................................MORE:-Humans have 23 pairs of chromosomes, for a total of 46 chromosomes.The two types of chromosomes are:-[tex]\sf\blue{Autosomes}[/tex] - There are 22 pairs of autosomes in humans. [tex]\sf\pink{Gonosomes\:or\:sex\:chromosomes}[/tex] - They are X and Y chromosomes. In the case of males, they have one X and one Y chromosome, while females possesses two X chromosomes...................................................[tex]\circ \: \: { \underline{ \boxed{ \sf{ \color{green}{Happy\:learning.}}}}}∘[/tex]
Natural selection is best described as
a. disruptive selection
b. stabilizing selection
С. a mechanism of evolution
d directional selection
Imagine researchers following up on seeley's study brought some flat periwinkles appledore island into the lab to test for heritability. What results could they observe that would support the hypothesis that shell thickness is heritable in these snails?
Answer:
If thick-shelled snails have thick-shelled offspring and thin-shelled snails have thin-shelled offspring then this is good evidence that shell thickness is heritable.
Explanation:
Inheritance is a natural mechanism by which genetic information contained in the DNA sequence is passed from parents to offspring. Moreover, heritability is a measure of the genetic influence on the variation in a particular phenotypic trait (e.g., height, eye color, etc.) between individuals in a population. The values of heritability for a particular phenotypic trait range from zero (when all variation in a population comes from environmental factors and therefore is not heritable) to one (when all variation in a population comes from genetic factors and therefore is heritable). For example, in this case, if parental snails always have offspring with the same phenotype for the trait ‘shell thickness’, it would indicate that the heritability for this trait is equal to one, thereby evidencing that all of the variability for the trait 'shell thickness' comes from genetic differences.
Which of the following correctly identifies the function of the given cell component
What is the difference between convergent plate boundaries that have plates of the same density to convergent plate boundaries with plates of different densities.
Answer: If they have the same density, they will be pushed up together creating a mountain. If the plates have different density then the one with more density overlaps the other.
Explanation:science
Strong contrasts in texture have what effect on a monochromatic design?
Answer:
It prevents monotony
Explanation:
Strong contrasts in texture have a primary effect on monochromatic design by ensuring it’s more eye catching and not too plain.
Contrasts is a term used to describe the display of an objects dissimilar sides. A monochromatic light is known to have just one color and the strong contrasting texture however makes it possible for it to have different color differences thereby preventing monotony.
12. Which color of visible light extends to the deepest depth in the open ocean?
O A, Blue
O B. Yellow
O C, Red
OD. Orange
Answer: Blue is the answer
A. Somalia B. Kenya C. Spain D. Nigeria
Answer:
Somalia
Explanation:
The process of natural selection is seen most quickly in organisms that can reproduce many generations in the shortest amount of time. Based upon this information, which type of organism would exhibit the most rapid rate of evolution?
1.bacteria
2.fruit flies
3.finches
4.humans
Answer:
2
Explanation:
one time within 2 days my house was filled with fruit flies
Answer:
Bacteria
Explanation:
Bacteria reproduce most quickly . Fruit flies can go from the egg to sexual maturity in 3 weeks while bacteria can reproduce once they are "born" and can do so multiple times a day, while fruit flies can reproduce if mature once every day about.
Finches and humans obviously have much slower rates of reproduction.
If your body’s hypothalamus is not functioning properly, which of the following will happen?
Answer:
You may become dehydrated because your kidneys will not hold onto enough water.
Explanation:
How can you tell from a food web which organisms will have the greatest biomass?
Answer:
How can you tell from a food web which organisms will have the greatest biomass?
The tropic level contains the greatest biomass in most ecosystems is producers. This occurs because producers get their energy from the sun, the sun is the most available resource, so there are the most at that level.
Explanation:
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Question 1
Which statement best describes adaptation?
A)Adaptation is the process of species gradually changing over many generations
B)Adaptation is process of plant gradually changing over time
C)Adaptation is a trait that helps an organism survive and reproduce
D)Adaptation is a difference between individuals of the same species
Answer:
C
Explanation:
Process of elimination
A= Evolution
B= Should have nothing to do with plants
C= Makes sense
D= Variation
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Two dogs–a boxer and a poodle–were the first to have their entire genomes sequenced. The dog genome contains 2.8 billion2.8 billion base pairs across 3939 pairs of chromosomes. They have 19,00019,000 protein-coding genes, most of them with close counterparts in other mammals, including humans. What is the total number of chromosomes in a dog?
Answer:
78 chromosomes
Explanation:
Since the number of chromosomes in a dog are diploid, we have 2n chromosomes where n = number of chromosome pairs.
Since n = 39.
The number of chromosomes is 2n = 2 × 39 = 78 chromosomes
So, a dog has 78 chromosomes.
What genetic and other changes might have caused these cells to escape normal cell cycle regulation these cells are hela cancer cells
Answer:
Cancer cells such as Hela cells escape to normal cell cycle by mutations that lead to the misexpression and/or overexpression of regulatory molecules (e.g., cyclins and cyclin-dependent kinases) and faulty checkpoint control of the cell cycle
Explanation:
The term cell cycle refers to the mechanism of DNA replication and cell division, which involves a series of sequential steps. The control of the cell cycle depends on 1-cyclins and cyclin-dependent kinases (CDKs) that regulate the cell cycle by a cascade of protein phosphorylations and 2- a group of checkpoint controls that monitor the completion of critical cellular events. HeLa is an immortalized cell line derived from cervical cancer cells. These cells (HeLa) contain 76 to 80 total chromosomes (instead of the 46 chromosomes that contain normal-diploid body cells), some of which are heavily mutated. These mutations can affect CDKs that control the cell cycle as well as checkpoint-control mechanisms (for example, those resulting from DNA damage), thereby cells do not enter programmed cell death (apoptosis) and proliferate uncontrollably.
Where does most of the water that evaporates from the Earth come from?
A.
Oceans
В.
ponds
C.
rivers
D.
lakes
Answer:
A
Explanation:
what is adaptive radiation
Answer:
Adaptive radiation is the process where organisms diversify rapidly from an ancestral species to a multitude of different, new forms. More particularly when a change in the environment makes new resources available.
Why does glucose more soluble in water comparing to benzoic acid?
Thanks :)
Answer:
because it dissolves in water very well
Explanation:
Reproductive system
Explain How does a fetus get nourishment up
until the time it is born?
Answer:
The fetus gets it's nourishment through the umbilical cord that is connected to the mother's uterus
As a population grows past the ecosystem's ______ the size of the population will _____ until the size of the population stabilizes at a constant level
Answer:
carrying capacity , increase
Explanation:
Up to the the population carrying capacity the the population will increase to give a perfect balance and when the population will be much then the population will decrease.
How is gamete different from other type of cells in a persons body?
A. It has four times the number of chromosomes
B. It has no chromosomes
C. It has twice the number of chromosomes
D. It has half the number of chromosomes
(I’ll give points + brainalist for the correct answer)
Answer:
d
Explanation:
it has half the chromosomes
what Occurs when the agents of erosion (water, wind, ice, gravity) slow down
or stop, and lay down sediment.
Answer:
then landscape would rarely happens and the there will be a lot of rocks smooth surface
Explanation:i really don't know
You have identified a new, recessively inherited trait in dogs: floppy ears. To determine if the gene for Floppy Ears is X-linked or not, you should:
Answer:
Cross a non-floppy-eared male to a floppy-eared female and observe if males offspring have the floppy ear trait
Explanation:
Mammals (e.g. dogs) have two sex chromosomes: X and Y. In the XY sex-determination system, the female gamete (i.e., the ovum) contributes to an X chromosome, while the male gamete (i.e., the sperm) contributes either an X chromosome or a Y chromosome: normal females are XX and normal males are XY. In consequence, a male always inherits its X chromosome from the mother and its Y chromosome from the father. In this case, the presence of the floppy ear trait in all males F1 offspring obtained by crossing a non-floppy-eared male to a floppy-eared female indicates that this trait is linked to the X chromosome because males inherit the floppy ear trait from the mother.
3. Which statement describes a difference between
the nitrogen and carbon cycles?
a. The carbon cycle involves only plants.
Ob. The nitrogen cycle requires a process
called nitrogen fixation that is carried out by
certain bacteria.
O c. The carbon cycle requires freezing
temperatures.
d. The nitrogen cycle occurs entirely in
the ocean.
Answer:
a.
Explanation:
The carbon cycle involves only plants. The nitrogen cycle requires a process called fixation, which makes the nitrogen more usable for living organisms. The carbon cycle requires that temperatures be above 27 °C (80 °F).
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The statement that best describes a difference between the nitrogen and carbon cycles is the nitrogen cycle requires a process called nitrogen fixation that is carried out by certain bacteria.
What are the main differences between the nitrogen and carbon cycles?The main difference between nitrogen cycle and carbon cycle is that nitrogen cycle describes the conversion of nitrogen into multiple chemical forms and its movement between the different ecosystems. Whereas the carbon cycle describes the movement of carbon and its multiple chemical forms between the atmosphere, lithosphere and hydrosphere.
Microbes are involved in the nitrogen cycle process. Both plants and animals participate in the carbon cycle.
Thus, the statement that best describes a difference between the nitrogen and carbon cycles is option (b).
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True or False? Wind, water, and ice may take millions of years to cause changes to landforms.
Answer:
true.
Explanation:
To get rid of waste generated by thousands of sailors aboard each of its aircraft carriers, the US Navy is using a process called pyrogenesis. In this process, waste is subjected to extraordinary heat. How is pyrogenesis different from the process of setting garbage on fire in a landfill
Answer:
Its location.
Explanation:
The main difference between pyrogenesis and setting garbage on fire in a landfill is that pyrogenesis process occurs on the surface whereas garbage on fire in a landfill occurs inside the soil at certain depth. Pyrogenesis is an extreme thermal process that converts organic matter into gas made up of hydrogen and oxygen whereas garbage on fire in a landfill decomposes garbage that breaks down materials in simpler substances.
Please don't use this question for points or you'll be reported I am timed can you please help?
The table below shows data collected in an experiment about gases in inhaled and exhaled air. Percentages of Chemicals in Air O2 CO2 Inhaled 20.94% 0.03% Exhaled 16.37% 4.46% Suppose a similar experiment was set up to measure changes in air composition immediately before and two days after twenty potted plants were placed in a clear, sealed aquarium near a window. Percentages of Chemicals in Air O2 CO2 Before 20.94% 0.03% After ? ? How would the second row of values in the plant experiment most likely compare to the second row of values in the original experiment? Oxygen levels would be higher, but carbon dioxide levels would be lower. Carbon dioxide levels would be higher, but oxygen levels would be lower. Oxygen levels would be higher, but carbon dioxide levels would be the same. Carbon dioxide levels would be higher, but oxygen levels would be the same.
Answer:
Option A is the answer
Explanation: I took the test
Answer: A
Explanation: Edge 2020
what describes when energy is released from an ATP molecule?
Answer:
hydrolysis
Explanation:
The process of hydrolysis is when one phosphate group is removed by breaking a phosphoanhyride bond. Then energy is released and ATP converts into ADP.