Answer:
B. Smaller fragments travel faster and farther than larger fragments.
Explanation: Shorter molecules move faster and migrate farther than longer ones because shorter molecules migrate more easily through the pores of the gel. This phenomenon is called sieving. [2] Proteins are separated by charge in agarose because the pores of the gel are too large to sieve proteins.
Hi PLS HELPP: 15 points
Which of the following is NOT a main reason myths were an important part of everyday life in ancient Greece? Group of answer choices They gave them something to do. They explained religious rituals. They explained the weather. They gave meaning to the world
Answer:
They gave them something to do.
Explanation:
PLEASE HELP DUE TODAY
1. What are some examples of different types of
asexual reproduction?
2. What are some types of advantages of asexual reproduction?
3. What are some of the disadvantages if asexual reproduction?
4. What is sexual reproduction?
5. What are alleles?
6. Which has greater variation, asexual reproduction or sexual reproduction?
Answer:
a) There are a number of types of asexual reproduction including fission, fragmentation, budding, vegetative reproduction, spore formation and agamogenesis. Spore formation occurs in plants, and some algae and fungi, and will be discussed in additional concepts
b) The advantages of sexual reproduction:
.) produces genetic variation in the offspring.
.) the species can adapt to new environments due to variation, which gives them a survival advantage.
.) a disease is less likely to affect all the individuals in a population.
c) The disadvantages of asexual reproduction include:
.) it does not lead to genetic variation in a population.
.) the species may only be suited to one habitat.
.) disease may affect all the individuals in a population.
d) the production of new living organisms by combining genetic information from two individuals of different types (sexes). In most higher organisms, one sex (male) produces a small motile gamete which travels to fuse with a larger stationary gamete produced by the other (female).
e) each of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.
f) Sexual reproduction gives rise to more viable variation than asexual reproduction. Because in sexual reproduction, genetic material from both the parents mixed (recombination of parent chromosomes) by fertilization...
Explanation:
such a long question .....
hope the answer was helpful ......
Plants and animals need a sugar called _______ in order to make _____ energy in a process called _______________ .
Reactants: _______________
Products: ________________
Answer:
Plants and animals need sugar called glucose in order to make instant energy (ATP) in a process called cellular respiration (photosynthesis for plants)
Explanatio
To what phylum do roundworms belong
Answer:
Nematoda
Explanation:
It is an
advantage for two species to share the same niche.
Answer:
False.
Explanation:
The competitive exclusion principle states that when two species compete for exactly the same resources (thus, they occupy the same niche), one is likely to be more successful. As a result, one species "outcompetes" the other species, and eventually the second species is eliminated.
Select the correct answer from each drop-down menu.
In an experiment, Dr. Travis examined the effects of calcium intake on osteoporosis, a condition that causes an increased risk of bone fractures. The amount of calcium is what
variable. The risk of bone fractures can be changed by what?
.
Answer:
By consuming necessary amount of calcium per day.
Explanation:
The amount of calcium is recommended for adults are 1000 mg per day whereas for aged people, it should be 1200 mg per day and for children it becomes 1300 mg per day in order to make the bones stronger and avoid the risk of fracture. The risk of bone fractures can be changed by consuming the recommended amount of calcium through your diet.
In the human body, each hormone is regulated by certain genes. These genes are turned on at times and turned off at other times. Which best explains this process?
Genes are directly regulated by hormones found in the integumentary system.
a. Genes are regulated by hormones secreted by the endocrine system.
b. The regulation of genes is only affected by external factors.
c. The regulation of genes is directly controlled by the nervous system.
Answer:
c. The regulation of genes is directly controlled by the nervous system.
Explanation:
C.The regulation of genes is directly controlled by the nervous system.
In the human body, each hormone is regulated by certain genes. These genes are turned on at times and turned off at other times the best explains this process is the regulation of genes is directly controlled by the nervous system.Thus, the correct answer is C.
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1. На какие классы подразделяются пыли по пожаро- и взрывоопасности. 2. На какие виды подразделяются по агрегатному состоянию горючие вещества? Приведите примеры. 3. Определить температуру вспышки и воспламенения пиррола C4H₅N, если его температура кипения 1300С. 4. Рассчитать температуру вспышки додекана, если его НТПВ равен 74оС. Рассчитать его температуру воспламенения. 5. Вычислить НКПВ и ВКПВ пентана. 6. Рассчитать НКПВ и ВКПВ смеси, состоящей из 30% этана, 60% этилена, 10% паров этилового спирта. 7. Какой объем воздуха потребуется на сгорание 66 грамм гексана? 8. Записать цепную реакцию C5H12+Br2
Where is the youngest rock in the Atlantic Ocean found?
plz hurry
Answer:
Mid-Atlantic Ridge
Explanation:
This is because they are deep down, near the earth's crust .
Sickle Cell anemia is a recessive trait that causes blood cells to be misshaped. A woman who has no history of sickle cell anemia marries a man whose father had sickle cell anemia. What are their genotypes?
Answer:
See the answer below
Explanation:
Let us assume the sickle cell anemia allele to be S and the alternate, non-sickle cell allele to be A.
Since the woman has no history of sickle cell in her family, she is totally free from the trait and, hence, would have the genotype of AA.
The man's father had sickle cell anemia. This means that the man has, at least, one sickle cell allele in his genotype with the other allele depending on the genotype of his mother. Hence, the man can be AS or SS depending on the genotype of his mother.
How does the size of a vacuole change from a plant to an animal cell?
Answer:
it changes since the plant cell is bigger than the animal's cell
Explanation:
Which point has the highest elevation?
Answer:
point b
Explanation:
Answer:
A
it's small and in the middle so it's a
Create a new sentence to help remember the names of the eight planets, in order.
Answer:
My very educated mother just served us noodles
Explanation:
I just made that up, have a good day
My Very Easy Method Just Speeds Up Names
M=Mercury
V=Venus
E=Earth
M=Mars
J=Jupiter
S=Saturn
U=Uranus
N=Neptune
help plz timed
What is the function of cellular respiration in plants?
to make sugars
to use up carbon dioxide
to break down sugars
to absorb sunlight
The function of cellular respiration in plants is to break down sugar
A woman has blood Type A, her baby has blood Type AB: Is it possible that a man who has the blood Type A could be the father? Show the Punnett Square and explain.
Answer:
No, it is not possible
Explanation:
Humans use the ABO blood group system where the A and B alleles are dominant over allele O but codominant with one another.
This system is such that;
Type A can only have genotype: iAiA or iAi
Type B can only have genotype: iBiB or iBi
Type AB can only have genotype: iAiB
Type O can only have genotype: ii
According to this question, a woman has blood Type A (iAiA or iAi) and her baby has blood Type AB (iAiB). This means that the father definitely contributed the allele B in order to have a baby with type AB. It also means that, according to the question, IT IS NOT POSSIBLE FOR A "Type A" father to produce that baby (see the punnet square attached).
Note: The father must contain an allele B in his genotype i.e. the father must be either type B (iBiB or iBi) or type AB (iAiB)
What are the similarities and differences between plant, animal, and fungal cells?
Answer:
They are eukaryotic cells, they present the three main parts: cell or cytoplasmic membrane, cytoplasm and nucleus defined with chromosomes and nucleolus. The three types of cells have in common the following structures: cell membrane, cytoplasm, nucleus defined with chromosomes and nucleolus, mitochondria, smooth and rough endoplasmic reticulum, ribosomes, Golgi apparatus, cytoskeleton and peroxisomes. But it differs in some. The plant cell has chloroplasts and a cell wall and the animal cell does not.
Explanation:
The animal cell has centrioles, lysosomes. It has no plastids, no cell wall, it has vesicles. They do not have the ability to produce their own food from inorganic components. The plant cell has plastids (chloroplasts), cell walls, large vacuoles. Fungal cells are organisms without chlorophyll, therefore they cannot photosynthesize. The reserve substances of the cytoplasm are not starch granules. As they are not able to synthesize their food, they have to obtain from other living organisms (they feed on other plant and animal residues contributing to decomposition) that is, they are heterotrophic. Fungal cells have a cell wall that is not present in animal cells and but plant cells have a cell wall. They have lysosomes and centrioles that the plant cell lacks but they are in animal cells. Animal cells, with a few exceptions, do not have vacuoles while plant cells do. The three types of cells have present nucleus, membrane, mitochondria, endoplasmic reticulum, Golgi system.
The Archean Time Period (Stage 1) had lots of oxygen available.
O True
O False
Answer:
True
Explanation:
Environment. The Archean atmosphere is thought to have nearly lacked free oxygen. Astronomers think that the Sun had about 70–75 percent of the present luminosity, yet temperatures on Earth appear to have been near modern levels after only 500 Ma of Earth's formation (the faint young Sun paradox).
Celestial body: Earth
Chronological unit: Eon
Alternate spelling(s): Archaean, Archæan
Lower boundary definition: Defined Chronome...
Hope it Helps! :D
Adaptation is -
A. the ability to change to fit one’s environment
B. a trait that helps an organism survive and reproduce
C. being the biggest organism in a population
D. turning a popular book into a movie
the study of the life cycle of mosquito is important for its control, why?
Hello Goodmorning...God bless..here is the answer to your following question- :)
Explanation:
By the study of life cycle of mosquito, we can conclude the female mosquito lays eggs in stagnant water and develop larva and pupa in it
with the help of life cycle of mosquito, we can control them.
Knowing the different stages of the mosquito's life will help you prevent mosquitoes around your home and also help you choose the right pesticides for your needs, if you decide to use them.
What is the name of the process that occurs in
the core of the sun producing the light and heat
energy for life as we know it on planet Earth?
For example, hydrogen atoms are fused together to form helium. In the process, an immense amount of heat and energy is released. Much of that energy is on the electromagnetic spectrum that we cannot see (eg: ultraviolet light), but the visible portion of the spectrum is what we can see and that produces the yellow glow of the sun.
hello everybody hru all
from india
what is reflection of light?
Answer:
Hii ! I am fine and u?
Explanation:
When light from an object is reflected by a surface,it changes direction.It bounces off the surface at the same angle as it hits it. smooth,shiny surfaces such as mirrors and polished metals reflect light well.
I hope it's helpful!
how do I figure out how to find the nucleus
Answer:
The mass number is the sum of protons and neutrons. This means to find the number of neutrons you subtract the number of protons from the mass number. On the periodic table, the atomic number is the number of protons, and the atomic mass is the mass number.
Answer:
Nucleus is found in the center of the Atom and is the only thing found in the center
Explanation:
hope that helps
A classmate thinks that cancer and apoptosis are both harmful to organisms. Do you agree or disagree? Explain your reasoning.
_________________________________
Disagree• Cancer Destroys Cells & Is Abnormal• Apoptosis Destroys Cells & Is Normal_________________________________
what happen if a person has brain injury?
Answer:
Mild traumatic brain injury may affect your brain cells temporarily. More-serious traumatic brain injury can result in bruising, torn tissues, bleeding and other physical damage to the brain. These injuries can result in long-term complications or death.
Explanation:
Besides Stonehenge, what is one other ancient astronomy site and which culture built it?
Answer:
Nabta Playa
Explanation:
The world's first astronomical site was built in Africa and is older than Stonehenge.
What could happen if two of the base pairs on this strand of DNA were switched?
In the DNA structure if the two base pairs exchange it leads to creating a mutation in the sequence and makes different proteins, hence option A is correct.
How do DNA base pairs change the protein?A mutation is any kind of change that leads to the creation of an abnormal protein, DNA has genetic information to synthesize any kind of protein.
The process of transcription by which genetic information stored in the DNA is passed to the RNA, which translate this information to make the protein.
Protein is the final output of the genetic information stored in the organism's cell, if any change in the DNA sequence it affects the final functional structure of the protien.
Therefore, different protein is the result of the base pairs on this strand of DNA being switched.
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How did Rudolph Virchow summarize his years of work
Answer:
He proposed that all cells come from existing cells.
Explanation:
He proposed that all cells come from existing cells, completing the cell theory.
What university did Watson and Crick work at
Answer:
The University of Cambridge
Explanation:
Late in 1951, Crick started working with James Watson at Cavendish Laboratory at the University of Cambridge, England.
Hope this Helps :)
3. In what stage do humans have an exceptionable ability to learn?
O Adolescence
O Adulthood
O Infancy
Childhood
