Answer:
In metaphase 1, chromosomes from the mother and father line up randomly along the middle of the cell.
Explanation:
In diploid (2n) organisms, the homologous chromosomes are the two copies of each chromosome, where one of these homologs is the chromosome from the mother, while the second one is from the father. During metaphase I, the homologous pairs of chromosomes pair together at the middle of the cell. The law of independent assortment, also known as or Mendel's Second Law, states that homologous chromosomes line up in random orientations at the metaphase plate during this period (metaphase I).
Answer:
B
Explanation:
Watch this video about how cell division works. Then use what you’ve learned to answer the following questions. Part A Cell division is the process of forming new cells from existing cells. Based on the video, explain why cell division is important for the growth of a new baby.
Answer:
Gunpowder was developed in Postclassil
Explanation:
Answer: Cell division allows for cells to continue to grow and divide. this is important for the growth of a new baby because the baby needs cells in order to grow. as cells replicate, grow, and divide, the baby is able to grow.
Why are the properties of a compound so different than the properties of the elements that make up the atom?
Answer:
The properties of compounds are different from the properties of the elements that form them—sometimes very different. That's because elements in a compound combine and become an entirely different substance with its own unique properties. Do you put salt on your food? Table salt is the compound sodium chloride.
Explanation:
Please Brainiest It will help me get to my quest!!??!?!
Explain the relationship between the number of whales, the number of plankton (Biomass), and the amount of CO2 (Carbon Dioxide) in the atmosphere.
Answer:
Plankton are producers therefore they use the CO2 in the atmosphere and convert it to oxygen. Whales eat the plankton while sometimes using the oxygen that the plankton produces. In this situation, the whale is a primary consumer, or a heterotroph, as the plankton is the producer, or autotroph. Hope this helped :D
AZT works by interfering with HIV's production of offspring inside a host cell. It does so by interacting with a molecule called reverse transcriptase.
a. True
b.False
Answer:
a. True
Explanation:
AZT is an abbreviation for azidothymidine and it is the first effective drug against the human immunodeficiency virus (HIV). Thus, azidothymidine is considered to be the first anti-retroviral drug used for the prevention and treatment of the human immunodeficiency virus (HIV).
AZT works by interfering with HIV's production of offspring inside a host cell. It does so by interacting with a molecule called reverse transcriptase.
Basically, the shape and composition of the reverse transcriptase plays a significant role in the interaction. Therefore, this anti-retroviral drug known as AZT may not work effectively if the shape and composition of the reverse transcriptase changes.
Furthermore, the high mutation or replication rate of the human immunodeficiency virus (HIV) owing to its enormous genetic diversity has made it extremely difficult to develop an effective and accurate vaccine against the virus.
Hence, the human immunodeficiency virus (HIV) possesses a high error rate.
Which of the following best describes a difference between a mutualistic relationship and a parasitic relationship? A. Parasitism harms both organisms, while mutualism harms only one organism. B. Parasitism benefits only one organism, while mutualism benefits both organisms. C. Parasitism involves only two organisms, while mutualism involves many organisms. D. Parasitism continues for many generations, while mutualism is limited to one generation.
Answer:A. Parasitism harms both organisms, while mutualism harms only one organism. B. Parasitism benefits only one organism, while mutualism benefits both organisms.
Explanation:i hope this helps
Which statement describes a disruption that can occur in the cell cycle, leading to the development of
cancer?
A. A virus interferes with checkpoints within the cell cycle, resulting in slower cell proliferation.
B. A virus interferes with checkpoints within the cell cycle, resulting in uncontrolled cell apoptosis.
c. A gene mutation interferes with cell cycle control mechanisms, resulting in uncontrolled cell
proliferation.
D. A gene mutation interferes with cell cycle control mechanisms, resulting in an increased rate of cell
apoptosis.
Answer:
The correct answer is - option C. A gene mutation interferes with cell cycle control mechanisms, resulting in uncontrolled cell proliferation.
Explanation:
Genetic mutations resulting in the change or absence of any regulatory proteins that used during checkpoints can result in the mechanism of turning on or turning off the cell cycle or allow a cell to move further for the division. Due to this change, the checkpoints are not able to prevent it from division.
Uncontrolled multiplication or proliferation of the cell, resulting in tumor development or cancer.
I need help because it’s not easy
Use the context of the urinary system to explain the term osmoregulation
Answer:Kidneys regulate the osmotic pressure of a mammal's blood through extensive filtration and purification, in a process known as osmoregulation. Kidneys filter the blood; urine is the filtrate that eliminates waste from the body via the ureter into the bladder.
Explanation:
Kidneys regulate the osmotic pressure of a mammal's blood through extensive filtration and purification, in a process known as osmoregulation. Kidneys filter the blood; urine is the filtrate that eliminates waste from the body via the ureter into the bladder.
PLS HELP ME ON THIS ONE TOO!!!:))
Answer:
it is c on 1 D on 4 A on 2 and Bon 3
Which cell carries oxygen though out the body?
Answer:
Blood cells are the cells that carry oxygen
blood cells dont only carry Oxygen, blood cells also carry water, minerals, nutrients, and proteins throughout the different parts of the human body
Explanation:
hope this helps :)
How do you think the systems on Earth work together to create what we see on Earth?
Answer:
The five systems of Earth (geosphere, biosphere, cryosphere, hydrosphere, and atmosphere) interact to produce the environments we are familiar with.
divide the planet into two main components: the biosphere, which consists of all life, and the geosphere. Because these subsystems interact with each other and the biosphere, they work together to influence the climate, trigger geological processes, and affect life all over the Earth
Explanation:
Please Answer 6 7 8 9 10 Pleaseeeee
Answer:
hey what if you dont know it
Explanation:
Which of the following are true statements about ozone holes? (Select the three best
answers.)
A.Ozone holes don't have any ozone in them.
B. Ozone holes allow ultraviolet light to reach the Earth's surface.
C. Chlorofluorocarbons make an ozone hole larger.
D. Ozone holes have more ozone than usual.
E. Ozone holes can be hole-shaped.
F. There is always just one ozone hole in the Earth's atmosphere.
Answer:
Ozone holes have more ozone than usual.
Correct Answer
Ozone holes allow ultraviolet light to reach the Earth's surface.
Ozone holes don't have any ozone in them.
Chlorofluorocarbons make an ozone hole larger.
Explanation:
Ozone has been the atmospheric layer that protects the earth. It allows the ultraviolet rays to enter the earth, and there is one ozone hole due to the Chlorofluorocarbons. Thus, options B, C, and F are correct.
What is an ozone hole?An ozone layer is defined by the presence of the ozone gas that is present in the atmosphere of the earth. The ozone hole is the hole in the ozone layer that is due to the depletion of the ozone gas in the layer due to increased global warming and pollution.
The increased concentration of Chlorofluorocarbons (CFCs) generated from aerosols, air conditioners, and refrigerants have resulted in a hole in the ozone layer. This lead to increased exposure of the organism to the harmful UV radiations emitted from the sun.
Also, this has resulted in increased climatic changes because of the global warming and heating of the atmosphere due to the entrapment of the UV and Sun rays. This leads to various diseases including cancer and eye irritation.
Therefore, the ozone hole is due to increased Chlorofluorocarbons. options B, C, and F are correct.
Learn more about ozone, here:
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Which type of echinoderm lacks tube feet that are used for movement?
O sea star
O brittle star
O sea urchin
O sea cucumber
Answer: B. brittle star
Explanation:
Which is the SI symbol for volume?
X m
g
L
к
Answer:
L
Explanation:
Someone do this plese! will give brainlist and alot of points
Answer:
Hi Hi really sorry may i get some points i need them to give it to other people cuz some people want points, ik its not the answer u wanted sorry but hope u get the answer soon!
Explanation:
Calculate the speed of a turtle that walked 280 centimeters in 7 seconds
Body cells are all I need help
What is the ABO blood classification based on?
antibody on the red blood cell
antigen in the blood
antigen on the red blood cell
hemoglobin in the blood
The ABO blood classification is based on antigen on the red blood cell. Therefore, option (C) is correct.
What do you mean ABO blood classification?Based on the presence or absence of antibodies and antigenic substances on the surface of red blood cells, a blood type is a classification of blood.
A framework used to human blood into various kinds, in view of the presence of specific on the outer layer of platelets. A, B, O, and AB are the four blood ABO types.
When there are more than two possible alleles for a single chromosomal locus, this is called a multiple allele. The ABO blood bunch is an exemplary illustration of this. Each person has two alleles for the ABO blood type because they have two number 9 chromosomes.
Learn more about ABO blood classification:
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Bloom syndrome is an autosomal recessive disease that exhibits haploinsufficiency. A recent survey showed that people heterozygous for mutations at the BLM locus are at increased risk of colon cancer. Suppose you are a genetic counselor. A young woman is referred to you whose mother has Bloom syndrome; the young woman's father has no family history of Bloom syndrome. The young woman asks whether she is likely to experience any other health problems associated with her family history of Bloom syndrome. What advice would you give her?
Answer:
The correct answer is - she is heterozygous for a mutated BLM allele and will have an increased risk of colon cancer.
Explanation:
Autosomal recessive disease expresses itself in next-generation only if there is both alleles are recessive for the gene. In haploinsufficiency, the dominant allele fails to express itself in the phenotype due to insufficiency. So, if even one allele of the recessive gene present in the haploinsufficiency case, it will affect and express its trait.
She is heterozygous for a blood syndrome, as her mother had but her father has no disease, allele and will have an increased risk of colon cancer.
the oxygen of air diffuses out from
Answer:
From higher concentration to lower.
Explanation:
The oxygen diffuses out from a region of higher concentration to the region of lower concentration because of diffusion. The air contain high amount of oxygen and human body has low oxygen level so the oxygen moves from the air to the lungs of the human body from there oxygen is loaded in the hemoglobin while on the other hand, carbondioxide is removed from the blood into the lungs which goes outside the body through breathing.
Help pls !!
How do increases in the carrying capacity of Earth for people affect the carrying capacity of Earth for other species?
1. It increases for all species .
2. It decreases for all species .
3. It increases for most species
4. It decreases for most species .
Answer:
It decreases capacity for other species
Explanation:
As humans clear and develop more and more land, the animals that live in the cleared land lose their homes, so they have nowhere to live. This decreases the animals carrying capacity while increasing humans carrying capacity.
Fill in the blank:-
▪︎Handpicking is used to separate larger size impurities from _________.
Define:-
1. Threshing
2. Winnowing
3. Sieving
Write in your words
Explanation:
Threshing- The process of separating grains from the harvested crop is called threshing.
winnowing-The grain is separated from the chaff with the help of wind is called winnowing.
Sieving- Sieving is a simple technique for separating particles of different size.
Original DNA Sequence:
TACACCTTGGC GACGACT
mRNA Sequence:
Amino Acid Sequence:
Explanation:
ATGTGGAACCG CTGCTGA
UTGTGGUUCCG CTGCTGU
7. How do the data support your claim above?
Explain your statement above. Be sure to refer to specific pieces of data from your experiment that
support your argument. HELP
Please help asap with 18
PLEASE HELP :( Match the vocabulary from this section with its example.
Answer:
3 community
4 population
5 ecosystem
2 abiotic
1 biotic
John was told by his physician that he was vitamin D blood levels were low. John needs to eat foods that are rich in
Answer:
Vitamin-D in the blank.
Explanation:
If you think you may have a deficiency, it's important that you speak to your doctor and get your blood levels measured. Fortunately, a vitamin D deficiency is usually easy to fix. You can either increase your sun exposure, eat more vitamin-D-rich foods, such as fatty fish or fortified dairy products.
Which statement describes the relationship between the deer and plants on the food web? (3 points) Tree is consumed by insect, which is consumed by the frog and lizard. The frog and lizard is consumed by the snake and the snake is consumed by the hawk. The mayfly is consumed by the fish and the fish is consumed by the bear. The plants are consumed by the deer and bear. The deer is consumed by the wolf. Group of answer choices Heterotrophs supply food for the autotrophs. Autotrophs and heterotrophs share the same food source. Autotrophs supply food for the heterotrophs. Autotrophs and heterotrophs compete for the same food source.
Answer is B - Autotrophs supply food for the heterotrophs.
A flower would be a type of autotroph and the deer would be a type of heterotroph. It would only make sense if it was B.
Also I took this test already on Canvas, and got it correct.
10
In the Rolling Plains ecoregion of Texas, some parts of rivers are in deep canyons and others have bottoms that are close to the level of
the surrounding land. What conditions are most likely to be found in a place where a canyon has formed?
OA.
fast-moving water and rock that is highly resistant to erosion
OB. slow-moving water and rock that is highly resistant to erosion
Oc. slow-moving water and rock that is easily eroded
OD. fast-moving water and rock that is easily eroded
Answer:
D
Explanation: its the most theorital and logical reason.