Answer:
The double dna to helix
Explanation:
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List three things you learn today about meiosis, two things you found interesting or that you would like to learn more about and one question you still have.
Please just give me random stuff to say
Answer:
Meiosis is important because it ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes . Meiosis also produces genetic variation by way of the process of recombination .
Explanation: Meiosis is important for three main reasons : it allows sexual reproduction of diploid organisms , it enables genetic diversity , and it aids the repair of genetic defects .
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Answer:
Describe the three ways meiosis produces genetic variability. We have seen that meiosis creates variation three ways: crossing over, mutations caused during crossing over, and independent assortment.
Five students get sick with a cold after a weekend field trip to the aquarium with their classmates. Which best explains why these students became sick?
A contact with an infected fish
B. contact with an infected person
C. contact with contaminated food
D contact with a contaminated water
Answer:
The answers is B
Explanation:
I just took a test that had this question on it.
B. contact with an infected person
Transmission occurs when an infected person interacts or exchanges bodily fluids with another person. This can happen before the infected individual even realizes they are sick.
After a weekend field trip to the aquarium with their classmates, five pupils catch a cold. Because they may have come into contact with an infectious person, students became ill. Students became sick as a result of B. contact with an infected person
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what is something that could become an extra variable in an experiment if it is not managed properly.
A. Scientific theory
B. Scientific law
C. Constant
D. Control
Answer:
A. Scientific Theory
Explanation:
I can't breathe
Which of the following are examples of geological processes that occur slowly
Answer:
Explanation:
Earth changes in its own natural ways. Some changes are due to slow processes, such as erosion and weathering, and some changes are due to rapid processes, such as landslides, volcanic eruptions, Tsunamis and earthquakes.
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The examples of geological processes that occur slowly is soil erosion and weathering.
What do you mean by soil erosion?Soil erosion is the denudation or wearing away of the upper layer of soil. It is a form of soil degradation. This natural process is caused by the dynamic activity of erosive agents, that is, water, ice, snow, air, plants, and animals.
Soil erosion occurs primarily when dirt is left exposed to strong winds, hard rains, and flowing water. In some cases, human activities, especially farming and land clearing, leave soil vulnerable to erosion.
Removing trees and plants, plowing fields, and overgrazing by livestock disrupts roots that stabilize sediment and soil. These human activities can increase erosion rates 10 to 100 times that of non-human geologic processes.
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When purchasing an electrical device, what are the two financial costs you need to consider? Are there any environmental considerations you would make? Explain your reasoning.
Answer:
Initial price and operating cost
Why are antibiotics unhelpful for treating the common cold?
•
A. Colds are caused by viruses.
• B. Antibiotics cannot treat illnesses.
• C Bacteria are not killed by antibiotics.
O D. Colds are caused by antibiotics.
What is a network of water-filled canals with thousands of tube feet called?
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Why is suburban sprawl tightly linked with environmental problems caused by
transportation?
A. Commuters who live in suburbs are dependent on automobiles that emit air
pollution.
Х
B. Commuters who live in suburbs are more likely to walk and suffer from air
pollution
C. Commuters who live in suburbs are dependent on mass transit systems that
emit air pollution.
D. Commuters who live in suburbs are dependent on mass transit systems that
add to water pollution.
A shoreline's first line of defense against hurricanes is
Answer:
Mangroves
Explanation:
Ruffled trees that grow on the north Atlantic coast of Florida. Mangroves are rapidly adapting to climate change. When an area becomes hospitable, its seed, which can float away for a long time, soon begins to germinate and take root in it. They represent a unique ecosystem and usually grow in shallows near the coast.
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Answer:
moving materials in and waste products out
Explanation:
What are the three major phases stages of the cell cycle?
Answer:
Interphase Cytokinesis .MetaphaseEach do and have different parts while doing different things.
Explanation:
I looked it up..
Hope this helps you out!
Answer:
the three major phases are:
Explanation:
1) interphase
2) cytokineses
3) metaphase
Would a cell that did not undergo cytokinesis be able to function properly? Explain.
Answer:
If cytokinesis wouldn't really occur, the cytoplasm would not be broken and two similar daughter cells would not function as a result. Therefore a cell should not be divided into two separate cells to stay at rest.
Explanation:
Cytokinesis, which is the final step of mitosis, is split into two isolated, equivalent daughter-cells by the material.
QUESTION 5
How does a plant cell split into two new cells?
Plants cells do not go through cytokinesis
A cleavage furrow forms
A cell plate forms
The cell pinches in
what virus is this i need help
Answer:
Worm virus
Explanation:
They entering our butt to make our popoo
Answer:
Ebola
Explanation:
Compare transport in animals and plants cells
Answer:
Transport in both plants and mammals is by a system of specialised tubes. ... In mammals this forms a circulatory system of arteries, capillaries and veins. In flowering plants, transport is not circulatory and occurs in microscopic xylem and phloem.
Explanation:
Mammals:
ºSpecialised tubes - arteries, capillaries and veins.
ºAll tubes are composed of living cells.
ºThe concentration of substances transported is controlled (see homeostasis). The ºconcentration of the substances being transported is not controlled.
ºThe heart controls the circulatory system. The heart is controlled by the nervous system.
ºThe rate of flow is moderate and is regulated by vasoconstriction and vasodilation.
ºUses water as a medium in which to transport substances (it is a good solvent, it has a high specific heat capacity, has good surface tension but is not viscous, and is unreactive).
º The substances being transported are: respiratory gases, glucose, amino acids, fatty acids, glycerol, vitamins, minerals, hormones.
Plants:
º Specialised tubes - xylem vessels and tracheids and phloem sieve tubes.
º Some tubes are composed of living cells, e.g. phloem. Others are composed of dead cells, e.g. xylem.
º The concentration of the substances being transported is not controlled.
º There is no such control in plants.
º The rate of flow in the xylem and phloem is quite slow. The rate of flow in the xylem is controlled by external factors via the stomata (e.g. temperature, wind, humidity).
º Uses water as a medium in which to transport substances.
ºSubstances being transported are: sucrose, amino acids, fatty acids, glycerol, vitamins, hormones (in the phloem) and minerals and water (in the xylem). Respiratory gases are not transported by this system but move via a series of inter-connecting air spaces.
Help plzzzzzzzzzzzzzzzz
Answer:
I'm pretty sure it's D the diagram is kinda hard to interpret tho ngl
Explanation:
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Darwin used the term 'Natural Selection' to be
him explain his theory of evolution What did
Darwin mean by the term Natural Selection?
!!pleas help!! :((
Answer:
Resources are limited in nature, organisms with heritable traits that favor survival and reproduction will tend to leave more offspring than their peers, causing the traits to increase in frequency over generations.
Darwin meant this my term 'Natural Selection'
Answer:
He defined natural selection as the "principle by which each slight variation, if useful, is preserved".
Explanation:
Darwin's Theory of Evolution by Natural Selection
More individuals are produced each generation that can survive. Phenotypic variation exists among individuals and the variation is heritable. Those individuals with heritable traits better suited to the environment will survive.
Which of the following is a consequence of humans using fossil fuels?
A. All of these
B. Destruction of habitats
c. More severe storms
D. Rising sea level
Answer:
A
Explanation:
got it right on edge
How does the body protect itself from the majority of pathogens it encounters?
Answer:
In general, your body fights disease by keeping things out of your body that are foreign. Your primary defense against pathogenic germs are physical barriers like your skin. You also produce pathogen-destroying chemicals, like lysozyme, found on parts of your body without skin, including your tears and mucus membranes. In response to infection, your immune system springs into action. White blood cells, antibodies, and other mechanisms go to work to rid your body of the foreign invader. The immune system has a vital role: It protects your body from harmful substances, germs and cell changes that could make you ill. It is made up of various organs, cells and proteins.
Once infected cells have sensed an invading pathogen, they secrete molecules called cytokines and chemokines. These cells are then primed to resist an infection with the invading virus. Cytokines such as interferons activate anti-viral genes in the infected and neighbouring cells.
Microorganisms capable of causing disease—or pathogens—usually enter our bodies through the eyes, mouth, nose, or urogenital openings, or through wounds or bites that breach the skin barrier. Organisms can spread, or be transmitted, by several routes.
The second line of defense is nonspecific resistance that destroys invaders in a generalized way without targeting specific individuals: Phagocytic cells ingest and destroy all microbes that pass into body tissues. For example macrophages are cells derived from monocytes (a type of white blood cell).
If pathogens do manage to enter the body, the body's second line of defense attacks them. The second line of defense includes inflammation, phagocytosis, and fever.
Answer:
your skin protects itself because of all the oils on your glands .. but when you get a cut the while blood cells trap and eat them
Explanation:
which enzyme is responsible for creating a primer that allows the DNA replication process to start
Answer:
Primase
Explanation:
Primase: the enzyme responsible for initiating synthesis of RNA primers on the lagging strand during DNA replication.
Answer:
Primase
Explanation:
2. There are many different types of cancer.
Which of the following is one thing they all have in common?
a. They are all caused by uncontrolled cell death.
b. They all start in the lungs and migrate to different parts of the body.
c. They are all caused by uncontrolled cell growth.
d. All of the above
e. None of the above
Answer:
i think its a im not sure though
For this cell division, you can see that 4 daughter cells are made that have half the genetic information as the original. What type of cell division is this?
a) Diffusion
b) Mitosis
c) Meiosis
d) Photosynthesis
Answer:
The cell division where 4 daughter cells with half of the genetic information of the original are obtained is meiosis (option c).
Explanation:
Meiosis is a type of cell division through which sex cells or gametes are obtained. It is a reductive division, since the daughter cells resulting from the process contain half of the chromosomal charge with respect to the original one.
In the process of meiosis, four haploid cells are obtained from a diploid cell, each of which is involved in the reproduction of the species. This mechanism of division occurs in two stages, called meiosis I and II.
The other options are not correct because:
a) Diffusion: it is a passive trans-membrane transport mechanism.
b) Mitosis: is the cellular division of somatic cells, where the result is two daughter cells identical to the original.
d) Photosynthesis: is the mechanism by which plants obtain energy and nutrients, from solar energy.
help Which phrases describe S waves?
Answer:
I think it is A
Explanation:
1. When do you expect the number of WBCs in a person's blood to be more—when the person is
healthy or when he/she is suffering from an infection? Give reason
Answer:
when he /she is suffering as the WBC WILL BE PRODUCED TO FIGHT WITH THE INDIGENOUS BACTERIA THAT IS AFFECTING THE PERSON.
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if a 900 newton tv is moved 3m in 60 seconds. how much power used urgent plzzzz
Which of the pair of terms is not related?
Fat-lipid
Starch-carbohydrate
Starch-nucleic acid
Sugar-carbohydrates
Answer:
starch nucleic acids uwu
Explanation:
please please help me with this one
help please!!! don’t mind the answer that’s filled in already i don’t know the answer
Answer:oop
Explanation:thats hard
HELP BIOLOGY ITS IMPORTANT
Answer:
Wild Type (brown), Chinchilla, Himalayan, Albino
I could be totally off but based on the research I've gathered and my knowledge on genes, that's from most common to least common.
Is the Y chromosome an accurate indicator of a persons external sex? Paragraph explanation would be appreciated. :)