Answer:
During cytokinesis in animal cells, a ring of actin filaments forms at the metaphase plate. The ring contracts, forming a cleavage furrow, which divides the cell in two. In plant cells, Golgi vesicles coalesce at the former metaphase plate, forming a phragmoplast.
Explanation:
How can genetic mutations increase the variation in a population over time?
Answer:
The flow of individuals in and out of a population introduces new alleles and increases genetic variation within that population. Mutations are changes to an organism's DNA that create diversity within a population by introducing new alleles.
Explanation:
meaning of flucking?
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science btw
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Chromosomal rearrangements are considered large-scale mutations. Point mutations are considered small-scale mutations, and are of two general types. The first is a single nucleotide-pair substitution. What occurs here?
Answer:
Please find what occurs in the single nucleotide-pair substitution below
Explanation:
Single nucleotide-pair substitution is a type of point mutation as stated in this question. Point mutation is when one nucleotide base (single) is affected in the sequence. In this single nucleotide-pair substitution, ONE nucleotide base is substituted by another base.
For example, in a DNA sequence that reads: TAA GTC GGG, a mutated sequence affected by single nucleotide-pair substitution will read as follows: TAA GTC TGG. Note that in the last codon (GGG), a single nucleotide G has been replaced by another nucleotide T. Therefore, single nucleotide-pair substitution is said to have occur.
Joe walks from his house to the movies 6 miles away. It takes him 2 hours. What is his speed
Answer: 3 mph
Explanation: The formula for calculating speed is distance divided by time.
6 divided by 2 is equal to 3, meaning he is traveling 3 miles every hour that passes.
Please help me on this
As one moves from left to right across the periodic table, what trend are evident?
A.) Atomic radius increases moving left to right
B.) Nonmetallic character increases moving left to right
C.) Electron affinity increases across the periodic table
D.) Elements change from solids to liquids and then gases.
E.) Most reactive elements on left and least reactive in n the right.
Answer:
C
Explanation:
Moving from left to right across a period, atoms become smaller as the forces of attraction become stronger. This causes the electron to move closer to the nucleus, thus increasing the electron affinity from left to right across a period. Electron affinity increases from left to right within a period.
Identify the muscle marked by the star (*): *
Your answer
Answer:
The infraspinatus
Explanation:
Which of the following could describe the velocity of a rocket?
Answer:i don’t know
Explanation:i don’t know
Answer: 8,000 m/s
Explanation: m = meter , s = speed
appendectomy equipment ?
Explanation:
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What are two advantages of displaying data in a chart?
407 QUESTIONS
It makes it easier to see and work with the data.
It makes it harder to make sense of the data.
It allows the data to be organized in meaningful ways.
It increases the number of words needed to describe the data
SUES
Answer:
A and B
Explanation:
answer this question fast
Answer:
Explanation:
There is no question to answer.
MULTIPLE CHOICE
In the space provided, write the letter of the term or phrase that best completes
each statement or best answers each question.
__6. Organisms that live in estuaries must adapt to changes in
a. temperature and precipitation,
b. sunlight and nutrients.
C. oxygen and pollutants.
d. water level and salinity.
7. Why doesn't photosynthesis occur in deep ocean water?
a. The water temperature is too cold.
b. There is no sunlight.
c. There are not enough nutrients.
d. The salinity level of the water is too high.
8. In estuaries, fresh water and salt water mix, forming a(n)
a. algal bloom.
C. coastal boundary.
b. habitat for shellfish.
d. nutrient trap.
9. Most of the nutrients in an arctic ecosystem come from
a. melting ice.
c. sunlight
b. the ocean.
d. lakes.
10. The majority of marine organisms are found in
a. deep ocean waters.
b. shallow, coastal waters.
c. hydrothermal vents.
d. salt marshes.
Answer:
6 is D
7 is C
8 is D
9 is C
10 is B
Explanation:
Following are the answers:
d. water level and salinity
b. There is no sunlight
C. coastal boundary
a. melting ice
b. shallow, coastal waters
What are estuaries?
An estuary is a body of water where a freshwater river or stream meets the ocean. The mixing of these two bodies of water creates a unique environment that supports a diverse range of plant and animal life. Estuaries are important for many different species of fish and shellfish, as well as for waterfowl and other migratory birds.
They also serve as important breeding and feeding grounds for many species. Human activities such as agriculture, urbanization, and pollution can have a negative impact on estuaries and the wildlife that depends on them.
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What are the two main characteristics scientists use when classifying plants?
Answer:
color, shape, size, how they reproduce, and their flowers or seeds.
hope this helps!!:)
Explanation:
On which end of a growing polypeptide chain is the next amino acid added?
C-terminal
N-terminal
5'-end
3'-end
Answer:
The correct answer is - C-terminal
Explanation:
Polypeptide chains are nothing but the linked amino acid sequences together which is takes place with the help of mRNA, ribosome, and tRNA in a living cell or organism. Polypeptide chain has two ends with two functional groups a carboxyl group end and an amino group end of the polypeptide chain.
The next amino acid added to the carboxyl group end of the polypeptide chain with the bond known as peptide bond and the reaction known as a condensation reaction and a molecule of water is released.
true or false
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science btw
What structures are responsible for the movement of chromosomes to the center of the cell in metaphase and their separation in anaphase
Answer:
The structures that are responsible for the movement of chromosomes to the center of the cell in metaphase is the spindle fibers, the cell attaches the centromeres to the spindle fibers to pull the sister chromatids to the center
In anaphase the sister chromatids are separated at the centromere and are pulled to the opposite poles of the cell by the spindle fibers
Explanation:
The structures responsible for the movement of chromosomes to the center of the cell in metaphase and their separation in anaphase would be the spindle fibers.
The spindle fibers are formed from microtubules near the two poles of a dividing cell. Spindle formation starts from prophase and continues to grow and extend towards the centromere of chromosomes.
At metaphase, the spindle fibers would have successfully attached to each chromosome at the kinetochore of their centromeres. Once this is done, the spindle fibers start shortening, pulling sister chromatids apart towards opposing poles in the process.
The shortening of the spindle fibers serves as the vehicle that transports sister chromatids to the poles.
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Explain how breast-cancer genes are still present in the population, despite cancer-related surgeries and deaths.
Answer:
the correct answer would be - inheritance.
Explanation:
BRC1 is one of the genes that cause breast cancer which is thought to be inherited from the parents and even surgery can remove it from the person or it removed with the death of the person but genes already passed on next generation.
Surgery can not remove the gene but the tumor only and can reappear again. It is impossible to remove the complete gene from the population.
Read the following scenario:
John Doe walks into the bank to deposit his weekly paycheck. While there, one of his hairs falls off the back of his shirt and onto the floor. After depositing the money, he leaves and returns to work. About fifteen minutes later, the bank is robbed at gunpoint by a masked man who is about the same height and build as John Doe. The bank manager is asked to provide a listing of all customers who visited the bank in the past week. The plan to carry out the investigation included searching the crime scene for evidence. Upon doing so, one of the investigators finds the hair belonging to John Doe and tags it as evidence.
Answer the following questions:
Provide at least 3 reasons the hair evidence alone can't be used to pinpoint John Doe in the robbery.
What other evidence in the investigation could have been collected in the attempt to identify the bank robber? the perpetrator.
Explain why hair evidence is generally considered "class" evidence.
Answer:
Hair evidence is considered "class" evidence because the hair can be connected to a certain group.
Explanation:
The hair evidence alone can't be used to pinpoint John Doe in the robbery because he also came to deposit his weekly paycheck so may be the hair drop at that time in the bank. The other reason is that may be the hair has been dropped by the real thieves in order to be caught the John Doe in the crime. Hair evidence is considered "class" evidence because the hair can be connected to a certain group.
A fungus with white spores cross fertilizes a fungus with black spores. If 10% of the progeny bear white spores while 90% of the progeny bear black spores, what must be true?
A.
The trait for spore color is determined by exactly one gene.
B.
The trait for spore color is determined by more than one gene.
C.
The allele for black spores is dominant over that for white spores.
D.
The allele for white spores is dominant over that for black spores.
Answer:
C. The allele for black spores is dominant over that for white spores
Explanation:
Since there are more of an outcome of black spores it would make sense that this trait is dominant.
White spores seem to be recessive in this case too.
It is also suspected that the parents are both heterozygous. They both carry one trait for black and one for white.
Ants secrete pheromones, which can warn other ants of danger or announce which colony an ant belongs to.
Please select the best answer from the choices provided
T
F
True
Explanation:
I took the test for school
1. What must be true to have offspring with black fur?
2. What must be true to have offspring with white fur?
3. What must be true to have offspring with black eyes?
4. What must be true to have offspring with red eyes?
5. What must be true to have offspring with red eyes and white fur?
Answer: Genetics
Explanation: This may sound a little strange, but in order to have animals with certain traits, they must be born with or have in the blood line to have said traits. Even then the traits exhibited may not be hereditary. There is a 50% chance that the genetics that you want the offspring to have, may not occur. When a child is made, this means that the parents donate chromosomes from both sides to give the child some of their looks. This could mean disease, eye color, hair thickness.
Answer:
1) At least one dominant allele
2) Two recessive alleles
3) At least one dominant allele
4) Two recessive alleles
5) Pure recessive
Explanation:
teacher went through it with us so it’s right :)
what sugars are easily used by our bodies?
Answer:
Carbohydrates are the body's most important and readily available source of energy. They're a necessary part of a healthy diet for both kids and adults. The two main forms of carbs are: simple carbohydrates (or simple sugars): including fructose, glucose, and lactose, which also are found in nutritious whole fruits.
Explanation:
each of these statements is a key characteristic of science, except: group of answer choices science focuses on explaining the natural world. science is based on the premise that things and events that happen in the natural world occur in consistent patterns that are comprehensible through careful systematic study. science is a process for producing knowledge which may be abandoned or modified in light of new evidence or reconceptualization of prior evidence and knowledge. scientists will never seek additional data once they confirm a hypothesis. both c and d.
Answer:
scientists will never seek additional data once they confirm a hypothesis
Explanation:
All the options are characteristics of science except the one that says that scientists will never seek additional data once they confirm a hypothesis.
That a hypothesis is confirmed does not mean that scientists are done and dusted with that phenomenon. One of the reasons the experiments that are used to test hypotheses are usually reproducible is to allow for continuous testing even after hypotheses have been confirmed. Continuous confirmation of hypotheses by many independent researchers turns the hypotheses into law and from there, theories can become laws when they are overwhemingly accepted worldwide and test against a wide range of phenomena.
Generally, science is a process of producing knowledge about the natural world. A previously held belief in science can be abandoned or modified once new evidence emerges
Present state and current conditions of the atmosphere.
air mass
Weather
Cloud cover
temperature
Answer:
weather
Explanation:
Help what is A and B
Answer:
A is carbon dioxide and B is ATP
Explanation:
hope this helps
Answer:
A is Carbon Dioxide
B is Oxygen
Explanation:
the change in weather is what causes the change in seasons?
Answer:
no Seasons are dependent on the Earth's orbit around the sun
Explanation:
In a tropical coastal swamp, students came across a mangrove forest with many roots that above the ground. Their teacher explains that they are specialized roots that stick up above the soil and absorb oxygen from the air when the the soil is covered by water. What is the name given to these roots?
A)
prop roots
B)
tabular roots
C)
haustorial roots
D)
pneumatophores
E)
contractile roots
Answer:
A. Prop roots
Explanation:
because you can look it up
Describe one way plants defend themselves against losing sap to insects like Mabel?
Answer:
Explanation:
The first line of defence in plants is an intact and impenetrable barrier composed of bark and a waxy cuticle. If the first line of defence is breached (the mechanical damage), the plant resorts to a different set of defense mechanisms, such as toxins and enzymes.
Why might both cells be considered equally successful
Explanation:
https://edu-answer.com/biology/question20838131#
Question 7
1 pts
Which of the following situations is an example of artificial selection?
O A farmer breeds cows, developing larger, more muscled calves
O A species of mouse develops lighter fur, reducing the likeliness that it will be seen by predators.
O A species of spider develops the ability to produce thousands of eggs, ensuring that some of its offspring
will survive.
O A species of anteaters develops narrower snouts, making it easier to eat ants in their anthills
Answer:
A
Explanation:
Because we people select cows for breeding for their traits of big muscles and producing lots of milk so us humans artificialy seselct these healthy cows for their traits
The correct answer is option A farmer breeds cows, developing larger, more muscled calves.
What are artificial and natural selection?Artificial selection is a measure taken by humans to identify desirable traits of plants and animals and to improve and maintain those traits in future generations.
Natural selection is natural selection, and artificial selection is human selection. The main difference between natural selection and artificial selection is that natural selection produces a large amount of biodiversity, whereas artificial selection produces the following types of organisms. B. Improved crops and livestock.
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