Answer:(a)
Explanation:
**NEED ASAP** Worth 20 points- What is the largest structure in a plant cell?
I forgot what was the largest structure :(
How is oxygen carried from the lungs to the tissues?
a. It binds to a protein called hemoglobin in red blood cells
b. It is carried by cilia through the bronchioles
c. It leaves the alveoli and enters mucus
d. It leaves the bronchi and enters the capillaries
Answer:
It binds to a protein called hemoglobin in red blood cells.
Explanation:
I took the quiz.
Oxygen gas is carried in the body from the lungs to the tissues by binding to a protein called as hemoglobin in red blood cells. Thus, the correct option is A.
What is Hemoglobin?Hemoglobin is abbreviated as Hb or Hgb. It is the iron-containing oxygen-transport metalloprotein which is present in the red blood cells of almost all the vertebrates as well as the tissues of some of the invertebrates.
Hemoglobin is the main protein in the red blood cells which carries oxygen gas to body's organs and tissues and it transports carbon dioxide gas from the different body organs and tissues back to the lungs.
Therefore, the correct option is A.
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When unnatural pollutants are exposed to sunlight and heated up, they create
a. ozone
b. carbon dioxide
c. nitrous oxide
d. greenhouse gases
When unnatural pollutants are exposed to sunlight and heated up, they create ozone. The correct option is a.
What are unnatural pollutants?
It is the resulting pollution from human activity. It covers the use of fossil fuels in manufacturing, transportation, and thermoelectric power plants, as well as industrial gas emissions, mining, processing, and stone crushing.
The physical degradation or contamination of the environment caused by the release of hazardous, dangerous, or toxic chemical substances is known as pollution.
Oxides of nitrogen (NOX) and volatile organic compounds (VOC), commonly referred to as hydrocarbons, undergo chemical interactions that result in ozone. Both close to the earth and high in the atmosphere, this reaction is possible.
Therefore, the correct option is a. ozone.
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(04.01 LC)
Which of the following conditions is necessary for natural selection to occur? (3 points)
More organisms are born than can survive.
Each individual organism that is born must survive.
There must be no mutations among organisms.
There must be no variation among organisms.
Answer:
A
Explanation:
The condition that is necessary for the natural selection to occur is that each individual organism that is born must survive. The correct option is B.
What is natural selection?Natural selection is the process by which living organism populations adapt and change.
Individuals in a population are naturally variable, which means they differ in some ways. This variation indicates that some people have traits that are better suited to their environment than others.
Natural selection, Darwin proposed, is a mechanism for evolution in which heritable traits that help organisms survive and reproduce become more common in a population over time.
The phrase "survival of the fittest" refers to the process of natural selection, a mechanism that drives evolutionary change.
The condition for natural selection to occur is that each individual organism that is born must survive.
Thus, the correct option is B.
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Scientists have used genetic engineering to produce new types of grains and vegetables. These grains and vegetables can live in hot temperatures. This research is beneficial to humans because the research...
A. Could eliminate the need of fertilize crops
B. Make crops more resistant to pollutants
C. Show these crops are likely to be infested by insects and other pests
D. Indicates that these crops may grow in hot, dry areas
Answer:
I think its B but im not 100% sure
Explanation:
Which one of these cells have a nucleus prokaryotic or eukaryotic?
Answer:
eukaryotic
Explanation:
I think it is eokaryotic...sry if im wrong
Answer:
eukaryotic
Explanation:
Oxygen is transported by _____to the_____ where it is used to break down the ______ into water, carbon dioxide, and usable energy.
cells
heart
sugar
blood
This is science but there isn’t a science label. I WILL GIVE BRAINLIEST IF YOURE CORRECT.
Which of the following is true about spring tides but is not true about neap tides?
They must occur during a new moon in the spring.
They occur during the moon's first-quarter and third-quarter phases.
They only occur during a full moon.
They can occur twice a month, during a new or full moon.
Answer:
They can occur twice a month, during a new or full moon.
Explanation:
Please mark me brainliest and have a nice day! <3
Can some one help me on 4-5 I need the help plzzzzz
Answer:
What does the fox say?!?!?!?!?!?!?
Explanation:
NI NI NI NI NIN IN IN IN IN INININININININININNINI
Which of the following courses might a genetic engineer take in college?
Answer:
Explanation:
Undergraduate courses in genetic engineering are limited; undergraduate students wishing to study genetic engineering often enroll in biological science, genetic biology or chemistry degree programs, which may include relevant elective course options.
When you make chocolate milk, milk is the __, and the chocolate powder is the __ the mixture is now called a __.
a. solute, solvent, solution.
b. solution, solvent, solute.
c. solvent, solution, solute.
d. solvent, solute, solution.
Answer:
I think it's A but im not sure?
Answer:
D. Solvent, Solute, Solution
Explanation:
When you make chocolate milk, milk is the solvent, and the chocolate powder is the solute the mixture in now called a solution.
Help PLEASEEEEEE. WHAT DO I PUT IN THE GRAPH !!!!!111
The division of the organelles of eukaryotic cells into separate sections according to their processes is known as?
A. Sectioning
B. Separation
C. Partitioning
D. Compartmentalization.
Answer:
A. Sectioning
Explanation:
I hope it helps
I will mark u as brainliest correct answer only
Tiger frogs have similarities in their mitochondrial DNA that are not shared by other frog species
Answer:
I believe the answer is D.
Explanation:
Hope this helps! ^^
What stage of mitosis is this? Brainliest will be involved for the correct answer
Answer:
Metaphase
Explanation:
The answer is metaphase.
How did the temperature relate to the “recommended temperature limit” (solid horizontal red line)?
Will give extra points for right answer or explanation
Answer:
The “recommended temperature limit” indicates limit of the temperature that is good for our world.
Explanation:
The temperature related to the “recommended temperature limit” means that in the graph there is a limit of temperature for our world's environment. if the temperature is between this limit, there is less or no adverse effect on our environment while on the hand, if the temperature exceeds from this limit, then it adversely affected our world because the concentration of carbondioxide gas in the atmosphere increases due to this increase temperature..
how is it possible for one twin to get skin cancer but the other one doesn´t
Looking at most newborn twins squirm contentedly in their cribs, you'd never guess that some were recently in peril. That's because carrying multiples raises the risks that a woman can suffer complications before she actually delivers.
Many twins are miscarried early in the pregnancy, often before a woman even knows she's pregnant. As reported in the International Journal of Fertility, only about one in eight embryos that starts as a twin is born as a twin. If they do survive, twins are usually born healthy. However, they are still more likely than other babies to have birth defects or to be born prematurely or underweight.
Carrying twins can be hard on you, too. You'll be more likely to develop pregnancy-related high blood pressure or diabetes. And there's a greater likelihood you will have a cesarean section when you deliver.
If you're carrying twins, some simple lifestyle changes and good prenatal care may help you reduce the likelihood of the following complications.
Low birth weight
Because they have to share nutrients and living space, newborn twins tend to be smaller than single babies. Even full-term twins often weigh less than 5-1/2 pounds each, making them vulnerable to a variety of health problems. You can help your babies reach a healthy size by making sure you put on enough weight during pregnancy. Try to eat 300 calories more each day than you would if you had a single baby (about 2,700 calories in total). If you had a healthy weight before pregnancy, you should aim to put on about 35 or 45 pounds.
Unequal size
Twins don't always share equally. In roughly 30 percent all twin births, one baby will be larger than the other. Some studies suggest that if one of your babies is at least 25 percent heavier than the other, one or both of them may be more likely to have breathing problems or need intensive care. Your doctor will track the growth of both your babies throughout your pregnancy. The first signs of unequal growth usually appear in the third trimester.
Twin transfusion syndrome
Twin transfusion syndrome poses a dangerous threat to identical twins who share a single placenta. It's normal for such twins to exchange blood during a pregnancy. But in about 20 percent of cases, one twin starts pumping large amounts of blood to the other twin, putting both of them at risk. In severe cases, the twin receiving the extra blood may develop heart failure while the other twin becomes dangerously anemic. Early diagnosis and treatment can slow the abnormal blood flow and lower the risk of complications.
Birth defects
Birth defects are common in twins, especially identical twins. Taking folic acid before and during pregnancy can help prevent neural tube defects. As reported in the medical journal The Lancet, however, about 10 percent of all identical twins are born with a birth defect such as a heart problem, a shortened limb, a club foot, or a dislocated hip (the conditions listed are linked to having less space in the uterus and would not be affected by folic acid.) Most of these conditions are treatable, however.
Risks to the mother
Your doctor will check you regularly throughout the pregnancy for signs of high blood pressure or diabetes. When detected early, both of these conditions can be controlled before they have a chance to threaten your pregnancy.
Special care
Carrying twins means you'll probably get extra attention from your doctor throughout your pregnancy. The doctor may suggest cutting back on activities between the 20th and 30th week of pregnancy, even if you haven't had any signs of labor. Many physicians also recommend an extra monitoring check on the babies' heart rate and movement, such as an ultrasound or nonstress test. A biophysical profile, which checks on heart rate, movement, and the amount of amniotic fluid in your body, might also be indicated. If you do go into labor prematurely, your doctor may suggest drugs to stop the labor or use corticosteroids to speed up the development of the babies' lungs.
It's possible that you may be able to deliver twins vaginally. But if the labor is difficult, the birth canal is too narrow, or one or both of the infants is in the breech position, you may have to undergo a c-section, in which the babies are delivered through an incision in your uterus. Talk to your doctor about what you can do to prepare for delivery.
Twins are a special challenge, both before birth and after. For now, your job is to stay healthy and get top-quality prenatal care. Two important people are counting on you.
Does this help lol :D
Answer:
Skin cancer can be genetic but just because twins are twins doesn't mean the both must have cancer if it isn't genetic and one twin got it it docent assure you for both getting it if that makes sense example one twin scrapes their knee doesn't mean the other one will have a scraped knee too .
Explanation:
Can someone please help me:)
What color light is being reflected by green plants?
Explanation:
As such, plants look green because they absorb red light most efficiently and the green light is reflected.
Explain how DNA results in the expression of a gene using the following words: DNA, mRNA, tRNA, gene, transcription, and translation
Explanation:
in order for a gene to even be transcribed, it must be "turned on" or "expressed" meaning the nucleotides have moved away from each other. after it's expressed, the gene will unwrap and continue on with transcription, and make mRNA copy of a DNA strand. once RNA is made it will leave nucleus and enter cytoplasm to find a ribosome. once it attaches to ribosome, translation begins, and a tRNA will bind to anti-codon, and the building of a polypeptide/protein will begin.
Temperatures are low at the top of a thunderstorm cloud. Based on this evidence, which of the following commonly forms at the top of a thunderstorm cloud?
A. acid rain
B. air molecules
C. ice
D. oxygen
Thunderstorm cloud have low temperature at the top of the them, ice is formed in the thunderstorm. Thunderstorm clouds are the rain-bearing clouds. Thus, the correct option is C.
What is Thunderstorm cloud?Thunderstorm clouds are the rain-bearing clouds that also produces lightning. Thunderstorms are dangerous. Every type of thunderstorm produces lightning.
The thunderstorm clouds are menacing looking multi-level clouds, with heights extending up to the sky in towers or plumes. More commonly known as thunderclouds. It is the only cloud type that produces hail, thunder and lightning.
There are three basic ingredients required for the development of thunderstorm, which are moisture, an unstable atmosphere, and some way to start the atmosphere moving. However, the moisture is necessary component to produce the thunderstorm clouds and precipitation.
Therefore, the correct option is C.
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How many X chromosomes do males have? _______
Answer:
There are 2 sex chromosomes – X and Y. Females have 22 autosomes and two X chromosomes, i.e., 22 + XX, while males have 22 autosomes and an X and Y chromosome each, i.e., 22 + XY. hope it helps.
basically 22
Explanation:
Answer:
one
Explanation:
females have two and males have one
What group of organisms is found at the base of every energy
pyramid?
Answer:
Plants or other photosynthetic organisms (autotrophs) are found on the first trophic level, at the bottom of the pyramid. The next level will be the herbivores, and then the carnivores that eat the herbivores. The energy pyramid (Figure below) shows four levels of a food chain, from producers to carnivores.
Explanation:
I hope I hope
Which contributes most in supporting life on the deep ocean floor?
O A. cold water temperatures
O B. extreme water pressure
O
C. hydrothermal vents
O
D. lack of predators
Which of the choices below gives the best "big picture" snapshot of what is happening in the body?
Question 10 options:
Specialized cells have specialized DNA that allows them to produce specialized proteins needed by an individual cell
The brain sends mRNA as a messenger to specific cells telling them to send proteins to copy DNA from the ribosomes so other cells can get a copy of those genes.
Every cell in the body contains the entire DNA genome. Specialized cells turn on specific genes to make specific proteins, which are then released for use throughout the body.
Answer:
that last one
Explanation:
the process used by planta and other autotrophs to capture light energy and use it to power chemical reactions is called 1.) chemosynthesis 2.) biogeochemical 3.) heterotroph 4 photosynthesis
Answer:
Photosynthesis
Explanation:
Photosynthesis is the process by which green plants use sunlight to produce their food
Please help me with this
When food is being mechanically digested, it is being
(1) changed into another substance
(2) made smaller in size
(3) converted into energy
(4) excreted from the body
Answer:
(2) made smaller in size
Explanation:
Mechanical digestion involves physically breaking the food into smaller pieces.
Answer:
2
Explanation:
2 because it makes sense and we chew food to make it smaller to digest it easily
Mitosis Matching
Questions
1. What is mitosis?
2. In order, what are the four main stages of mitosis?
3. What is the name of the stage a cell goes through just prior to mitosis?
4. What is the main event of interphase?
5. What are the two important events of prophane?
6. What is the main event of metaphase?
7. What structure is involved in moving chromosomen during
mitosis?
8. What is the main event of anaphase?
9. What are the two important events of telophase?
10. At the completion of mitosis when the cell dividen, what name
is given to the two new cells
11. You begin life as a one-celled structure called a zygote. What
process then took place over and over to build a body
containing billions of cells?
Answers:
a. Interphase
b. The chromosomes in the nucleus of the cell make identical copies of
themselves.
c. The chromosomes move toward and line up along the center of the cell.
d. The nuclear membrane disappears and the chromosomes become distinct.
e. Mitosis
f. New nuclear envelopes form around each of the two sets of chromosomes,
and the cell divides into two daughter cells.
8. Prophase, metaphase, anaphase, and telophase
h. Daughter cells
i. Microtubules
j. Division of the nucleus of the cell (usually followed by division of the cell
itself)
k. The microtubules pull one set of chromosomes to one side of the cell and
an identical set to the opposite side of the cell.
PLEASE HELP DUE RIGHT NOW