the placenta allows group of answer choicescarbon dioxide and other wastes to diffuse from the maternal blood to the embryonic blood.the fetus to enlarge without rupturing the mother's abdomen.oxygen and nutrients to diffuse from maternal blood to the embryo.maternal blood to mix with fetal blood.

Answers

Answer 1
Answer: oxygen and nutrients to diffuse from maternal to the embryo

Related Questions

On the African savanna, grasses feed wildebeest, gazelles, and hares. Lions, hyenas, and cheetahs hunt the wildebeest and gazelles. Vultures eat the remains from predator kills. Bacteria and fungi break down anything that is left over from the carcasses. Dung beetles eat the feces left behind from grass-eating animals like hares and elephants.

Which organism is a detritivore in this example?

Answers

Answer:

dung beetles

Explanation:

they reuse our waste for their needs

ere are 5 sacral vertebrae that are fused into ____________ sacrum.There are ____________ cervical vertebrae, some of them containing a transverse foramen.There are ____________ thoracic vertebrae, most of them with a long spinous process.The vertebral column is composed of ____________ vertebrae distributed into 5 regions.There are ____________ to 5 bones in the coccyx, with variability in the fusion.There are ____________ lumbar vertebrae, which have large verte

Answers

Answer:

There are 5 sacral vertebrae that are fused into one sacrum. There are seven cervical vertebrae, some of them containing a transverse foramen. There are twelve thoracic vertebrae, most of them with a long spinous process. The vertebral column is composed of thirty-three vertebrae distributed into 5 regions. There are three to 5 bones in the coccyx, with variability in the fusion. There are five lumbar vertebrae, which have large vertebral bodies.

Explanation:

The vertebral column has 33 vertebras and five sections. They are the cervical spine with seven vertebrae, the thoracic spine with twelve vertebrae, the lumbar spine with five vertebrae, the sacrum with five fused vertebrae, and lastly, the coccyx with three to five vertebrae. The vertebrae in each section have different characteristics. For example, the length of the spinous process changes becoming longer as we descend in the cervical and the thoracic spine, or the body of the vertebrae has different shapes in each section, or the presence of the transverse foramen in the cervical spine, which allow the passage of a nerve plexus, an artery, and a vein. Each section, with its characteristics, aligns to form the vertebrae column containing and protecting the spinal cord.  

The products or photosynthesis are carbohydrates and oxygen. Which process uses these substances as reactants?

Answers

Answer:

Respiration is the correct answer. Respiration process that occurs in the presence of oxygen is called aerobic respiration, generally seen among humans.

Explanation:

Which best explains why viruses do not have special structures or enzymes that allow them to make their own food?
Viruses can use energy of living cells that they infect.
Viruses can replicate inside a host that they infect.
Viruses can cause contagious illnesses in host cells.
Viruses integrate their RNA or DNA into infected cells.

Answers

Answer:

Viruses can replicate inside a host that they infect. ... The epiglottis closes the air pathway so that food will not enter it.

Answer:

B.) Viruses can replicate inside a host that they infect.

Explanation:

I just finished this test and got it right. This was the answer for me

"In fruit flies, eye color is a sex-linked trait: Red is dominant to white. What are the sexes and eye colors of flies with the following genotypes: XRX' XRY- XX: XRXR: d. XY: What are the genotypes of these flies: White eyed male: White eyed, female: red eyed female (heterozygous): d. red eyed_ male: Show the cross of a white eyed female XX' with red eyed male XRY. Show cross between pure red eyed female and white eyed male What are the genotypes of the parents How may are= White eyed and male: White eyed and female: Red eyed and male: Red eyed and female:"

Answers

The genotypes and eye colors of the flies are as follows:

XRX' and XRY: Red-eyed male and female, respectively.

XX: Red-eyed female.

XRXR: Red-eyed male.

XY: White-eyed male.

The genotypes of the parents in the crosses are:

1. White-eyed female (XX') and red-eyed male (XRY).

2. Pure red-eyed female and white-eyed male.

The number of flies with each eye color and sex cannot be determined without additional information or the specific inheritance pattern of the traits.

To determine the sexes and eye colors of fruit flies with the given genotypes, we need to understand the sex-linked inheritance of eye color in fruit flies.

X represents the X chromosome, and Y represents the Y chromosome, which determines the sex of the flies. The prime symbol (') denotes the mutant version of the gene.

Given genotypes:

1. XRX': This represents a red-eyed female.

2. XRY: This represents a red-eyed male.

3. XX: This represents a female with an unknown eye color.

4. XRXR: This represents a red-eyed female.

5. XY: This represents a male with an unknown eye color.

To determine the genotypes of flies with specific eye colors:

1. White-eyed male: The genotype would be XrY.

2. White-eyed female: The genotype would be XrXr.

3. Red-eyed female (heterozygous): The genotype would be XRXr.

4. Red-eyed male: The genotype would be XRY.

For the crosses:

1. Cross between a white-eyed female XX' and a red-eyed male XRY:

Genotypes of parents: Female (XX') and male (XRY)

Offspring: All female offspring will be red-eyed (XRX') and all male offspring will be white-eyed (XrY).

2. Cross between a pure red-eyed female and a white-eyed male:

Genotypes of parents: Female (XRXR) and male (XrY)

Offspring: All female offspring will be red-eyed (XRXr) and all male offspring will be white-eyed (XrY).

To summarize the genotypes of the parents and their eye colors:

White-eyed and male: XrY

White-eyed and female: XrXr

Red-eyed and male: XRY

Red-eyed and female: XRXr

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scientists originally believed that intelligence was located in the _____ of the brain.

Answers

Answer: Frontal lobe

Explanation:

a random urine specimen and plasma glucose test that are to be drawn and collected at the same time can be used to confirm:

Answers

Non pathogenic Glycosuria

Complete the sequences below: A T G C T A A C C T G C
DNA sequence: ______
mRNA sequence: ______
Amino Acids: ______

Answers

Answer:

DNA: A = T and T = A. C = G and G = C

T A C G A T T G G A C G

mRNA: A = T and T = U . C = G and G = C

T U C G U T T G G U C G

Amino Acids:

A = Adenine

T = Thymine

G = Guanine

C = Cytosine

U = Uracil

What does condensation release into the atmosphere?

Answers

Answer:

Condensation is the change of water from its gaseous form (water vapor) into liquid water. Condensation generally occurs in the atmosphere when warm air rises, cools and looses its capacity to hold water vapor. As a result, excess water vapor condenses to form cloud droplets.

Explanation:

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15. Cells found in plants and animals have similarities but can differ in function. Consider the following two organisms: a corn plant cell (Zea mays) and a camel cell (Bactrianus ferus). What is the best explanation for the difference in the cellular vacuole size between these two biotic organisms?

A. The corn cells' have a small vacuole size because it does not need long term water and
electrolyte storage.

B. The camel cells' have a small vacuole size because it does not need long term water and electrolyte storage.

C. The camel cells' have a small vacuole size because it is not in contact with toxins that need to be removed from the cell.

D. The corn cells' have a large vacuole size because it is in contact with many toxins in the soil which need to be removed from the cell.

Answers

The best explanation for the difference in the cellular vacuole size is option d. The corn cells' have a large vacuole size.

Explanation to the difference in the cellular vacuole size:

When there is the difference in the vacuole size that lies between the two biotic organism so it is due to the corn cells that contain high vacuole since they are in contact with various toxins in the soil that need to be eliminated from the cell.

hence, the correct option is d.

And, the rest of the options are wrong.

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How does weathering of rock expanding and breaking rocks apart impact water quality?

answer asap please
thanks

Answers

Weathering describes the breaking down or dissolving of rocks and minerals on the surface of the Earth.

Do you think new helpful species of bacteria will evolve with different functions? What would they do? What traits could they have to help them do these things?
please help

i will give brainliest and 5 * and 10 points for the best answer

i don't want to see any link as an answer

if i do you will be reported

Answers

My buddy is golf Wednesday night at the school and I’m going to go get a new car for a couple of hours to get my hair and then I’ll slap you ortepw and I don’t

Which of the following molecules of RNA would you predict to be the most likely to fold into a specific structure as a result of intramolecular base-pairing?
Group of answer choices
5′-CCCUAAAAAAAAAAAAAAAAUUUUUUUUUUUUUUUUAGGG-3′
5′-UGUGUGUGUGUGUGUGUGUGUGUGUGUGUGUGUGUGUGUG-3′
5′-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA-3′
5′-GGAAAAGGAGAUGGGCAAGGGGAAAAGGAGAUGGGCAAGG-3′

Answers

The molecule: 5′-GGAAAAGGAGAUGGGCAAGGGGAAAAGGAGAUGGGCAAGG-3′ is the most likely to fold into a specific structure as a result of intramolecular base-pairing, option D is correct.

This is because it contains complementary regions that can form stable base pairs. Specifically, the sequence contains several repeated stretches of the nucleotide G, followed by A, forming G-A base pairs.

These repeated motifs increase the likelihood of stable base pairing interactions and formation of secondary structures, such as stem-loop structures. In contrast, molecules A, B, and C lack repeated motifs or complementary regions, making it less likely for them to form specific structures through intramolecular base-pairing, option D is correct.

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The complete question is:

Which of the following molecules of RNA would you predict to be the most likely to fold into a specific structure as a result of intramolecular base-pairing?

A) 5′-CCCUAAAAAAAAAAAAAAAAUUUUUUUUUUUUUUUUAGGG-3′

B) 5′-UGUGUGUGUGUGUGUGUGUGUGUGUGUGUGUGUGUGUGUG-3′

C) 5′-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA-3′

D) 5′-GGAAAAGGAGAUGGGCAAGGGGAAAAGGAGAUGGGCAAGG-3′

DNA undergoes ____to produce_____.RNA undergoes____to produce_____

Answers

I am not really sure but you can get the answer from it :

They discovered a fundamental mechanism of how proteins protect chromosomes while DNA is being copied (a process called DNA replication), which relies on a protein called RPA. Cells have a limited amount of this protein, which they use as 'band aids' to protect the DNA temporarily during replication.

Which best describes a method of obtaining energy that may cause changes in water temperature and harm to fish populations?

Answers

generating electricity in a hydroelectric power plant.

Which choice is involved in both sexual and asexual reproduction

Answers

A choice that is involved in both sexual and asexual reproduction are spores.

which cellular processes would be directly affected by the improper functioning of mitochondria

Answers

Answer:

Cellular respiration

Explanation:

The Krebs cycle takes place in the mitochondria, so if the mitochondria wasn't able to function correctly, cellular respiration would be unable to take place.

DNA double helix. Hydrogen bonds break and helix opens. Each strand of DNA acts as a template for synthesis of a new, complementary strand. Replication produces two identical DNA double helices, each with one new and one old strand.

Answers

Answer:

The process described above is known as DNA replication.

Hope this helps you! Have an amazing day!

What is the function of the flower of a plant?

Answers

Reproduction. The other answer is a hack. Any link with that beginning is just a spam/ hack.

a point mutation that changes a uac codon into a uag codon is a: missense mutation. nonsense mutation. silent mutation. frameshift mutation.

Answers

Answer: silent mutation

Explanation:

Prokaryotic cells do not have a distinct nucleus and are missing other organelles. This is a characteristic of which domains?

Help me!!!!! ​

Answers

Answer: Eukaryotes

Explanation:

Eukaryotes have membrane bound organelles like nuclei. Arcahea and Prokaryotes don't have memrbane bound organelles

estimate how many calories a
person burns from physical activity.

Answers

Answer:

For men: 66 + (6.2 x weight) + (12.7 x height) – (6.76 x age)

For women: 655.1 + (4.35 x weight) + (4.7 x height) – (4.7 x age)

Explanation:

Agriculture is the main sources
lincome of Nepal Justify
this statments
give me long answer ​

Answers

Answer:

Agriculture is the mainstay of the economy, providing a livelihood for more than 70% of the population and accounting for a little over one-third of GDP,” according to the CIA. “Industrial activity mainly involves the processing of agricultural products, including pulses, jute, sugarcane, tobacco, and grain.

Many of the cell's hydrolytic enzymes are located in the lysosome, where the pH is ~5. a) What would you expect to be the optimum pH for these enzymes? b) Explain why this specific pH optimum would have a protective effect on the rest of the cell. c) Explain how this principle can be used to regulate enzyme activity in vitro.

Answers

a) Optimum pH for lysosomes hydrolytic enzymes is approximately 5.

b) pH 5 in lysosomes protects the rest of the cell by limiting enzyme activity outside the lysosome.

c) In vitro, enzyme activity can be regulated by adjusting pH, providing control over enzymatic reactions.

a) The optimum pH for hydrolytic enzymes in the lysosome would be around 5, as they are adapted to function effectively in this acidic environment.

b) The specific pH optimum of 5 in lysosomes helps protect the rest of the cell because it creates a barrier that prevents the enzymes from functioning optimally outside the lysosome, reducing the risk of uncontrolled hydrolytic activity that could damage cellular components.

c) In vitro, enzyme activity can be regulated by adjusting the pH of the surrounding solution. By setting the pH to the optimum level of the specific enzyme, its activity can be enhanced or inhibited, allowing precise control over the enzymatic reactions for experimental or therapeutic purposes.

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Which of the following has to be "tailed" before it migrates to the cytoplasm?
Group of answer choices, pick one:
mRNA
tRNA
pre-mRNA
rRNA

Answers

Pre-mRNA has to be "tailed" before it migrates to the cytoplasm, option C is correct.

Pre-mRNA is the initial transcript synthesized during transcription in eukaryotic cells. Before it can be transported from the nucleus to the cytoplasm for translation, the pre-mRNA molecule undergoes a process called RNA processing or RNA splicing. This process involves the removal of non-coding regions called introns and the joining together of coding regions called exons. Once the pre-mRNA has undergone splicing, it is converted into mature mRNA, which can then be transported to the cytoplasm for translation.

Pre-mRNA processing is a crucial step in gene expression regulation in eukaryotic cells. After transcription, the pre-mRNA molecule contains both introns and exons. Introns are non-coding regions that do not contain instructions for protein synthesis, while exons are the coding regions that contain the protein-coding sequences, option C is correct.

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The complete question is:

"Which of the following has to be ""tailed"" before it migrates to the cytoplasm?Group of answer choices, pick one:

A.mRNA

B.tRNA

C.pre-mRNA

D.rRNA"

7. During DNA replication, a complementary strand of DNA is made for each original DNA strand. Thus,
if a portion of the original strand is CAGGTTACG, then the new strand will be
a. CAGGTTACG.
c. GTCCAATGC.
b. GTCCTTAGC.
d. GTCCTTACG.

Answers

Answer:

i think its b i took the test but i forgot the answer

Explanation:

what is the correct answer?

Answers

Answer:

Purple. Phenotype=visual characteristics

All of the following adaptations allow for reproduction on land except
external fertilization.
eggs with sufficient food supply.
desiccation-resistant eggs.
amniotic eggs.

Answers

External fertilization (a) is the adaptation that does not allow for reproduction on land, while the other adaptations listed (b, c, d) enable successful reproduction in terrestrial environments.

The adaptation that does not allow for reproduction on land is a. external fertilization. External fertilization refers to the process of fertilization that occurs outside the body, typically in aquatic environments. This method is commonly observed in many aquatic organisms, where eggs and sperm are released into the water, and fertilization takes place externally.

On the other hand, the remaining adaptations listed (b. eggs with sufficient food supply, c. desiccation-resistant eggs, and d. amniotic eggs) are all adaptations that enable reproduction on land.

b. Eggs with sufficient food supply: Land-dwelling organisms, such as reptiles and birds, produce eggs with a sufficient food supply to support the developing embryo. These eggs contain nutrients and protective structures that allow for successful development outside of water.

c. Desiccation-resistant eggs: Many terrestrial organisms, including insects and amphibians, have evolved desiccation-resistant eggs. These eggs have specialized membranes and structures that prevent them from drying out in dry environments, enabling them to survive and develop on land.

d. Amniotic eggs: Amniotic eggs are a defining feature of reptiles, birds, and monotremes. These eggs have a specialized protective membrane called the amnion, which surrounds the developing embryo and provides a stable internal environment. This adaptation allows for the development and hatching of embryos on land.

Overall, external fertilization (a) is the adaptation that does not allow for reproduction on land, while the other adaptations listed (b, c, d) enable successful reproduction in terrestrial environments.

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Transport is the function of the protein known as hemoglobin . State the name and function of another protein. Do not use enzymes or membrane proteins for your answer . Name :

Answers

Answer:

keratin.

Explanation:

keratin is a fibrous protein that has protective and structural functions in the body.

to fulfil it's functional necessities keratin has characteristics that makes it insoluble and repellent to damage.

to fulfil it's functional necessities keratin has characteristics that makes it insoluble and repellent to damage.in the human body, keratin can be present in - hair and finger nails.

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a. 21. Angiosperms produce flowers, while gymnosperms do not. Which is a property of the flowers of angiosperms that is not shared by the reproductive structures of gymnosperms?
A. flower can produce many seeds at the same time.
b. The same plant can produce many flowers.
C. Flowers can be pollinated without the involvement of animals.
d. Flowers produce seeds that are encased in protective fruits ​

Answers

Answer:

Its not a flower can produce many seeds at the same time

Explanation:

D. Flowers produce seeds that are encased in protective fruits is a property of the flowers of angiosperms that is not shared by the reproductive structures of gymnosperms.

What are gymnosperms?

Gymnosperms are a group of seed-bearing plants that produce seeds that are not enclosed within a fruit. They are found in a wide range of habitats, from deserts to mountainous regions, and include many well-known species such as pine, spruce, and fir trees.

Gymnosperms are an ancient group of plants that have been around for over 300 million years, and they play an important role in many ecosystems by providing habitat, food, and other resources for wildlife and humans.

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I. Answer the questions following the fact patterns using the IRAC format:Cicily and Angela have been best friends since kindergarten. Angela has always invited Cicily to dinner for "Friday nights out". When Cicily has invited others Angela has paid for them as well. Either Cicily or Angela has told Waiter to add the bill to Angelas tab. Angela always pays the tab the following week.A] Cicily visits restaurant on Friday night without Angela. She and her friends enjoy food and drinks. Cicily tells waiter to put it on Angelas tab. He does so. Angela refuses to pay. What is restaurants best argument to recover for the bill? Explain. The figure shows a right-angled triangle ABC, where the point A has coordinates (-4,2), the angle B is 90 and the point C lies on the x-axis. The point M(1.3) is the midpoint of AB. Find the area of the triangle ABC Civil war unification Customer loyalty programs such as airline frequent flyer miles are an attempt to: Whatt is/are used to identify methicillin-resistant staphylococcus aureus? What is the effective rate corresponding to 18% compounded daily? Take 1 year is equal to 360 days.A. 19.61 %B. 19.44 %C. 19.31 %D. 19.72 % If the respondent must select an answer from among a list provided by the researcher, they are answering____________________. 5. a decrease in the price of popcorn will increase the quantity demanded of popcorn. t/f in the thought bubble, write a classic koan that samurai would meditate on. I need help writing a paragraph (300 words) about "Exporting Oil To Improve Countries Relationships", And how does it affect political, economic and social factors?Just write what you know or think about this topic. Confucian work dynamism or long-term versus short-term orientation includes ______ .A. a sense of shame and ordering relationships B. tonal languages a solution with a ph of 2 has how many more hydrogen ions (h ) in it than a solution with a ph of 4? group of answer choices 5 times more because each ph unit represents a 5x difference in hydrogen ion concentration 10 times more because each ph unit represents a 10x difference in hydrogen ion concentration 100 times more because each ph unit represents a 10x difference in hydrogen ion concentration 1000 times more because each ph unit represents a 1000x difference in hydrogen ion concentration Element A has two isotopes. The first isotope is present 18.18% of the time and has a mass of147.99. The second isotope has a mass of 127.76. Calculate the atomic mass of element A. (To twodecimals places) Canada has been a leader in legislating strategicassessment and considering big policy issues such as cumulativeeffects.Select one:TrueFalse Help me pls!!!2.a) One fraction is between 1 and 2 less than another fraction or decimal. List three possible pairs of fractions or fractions and decimals. Circle the value in each pair that is less.b) Represent each pair together on a single number line. It is far more difficult to make a perfect copy of an analog wave because a. ) analog waves travel at speeds too great for modern Technologies to use. B. )the exact value of any one piece of information is not clearly defined. C. ) each individual piece of information is either a 0, a one, or a two. D. ) most analog waves have wavelengths that are too long to reproduce in copies true/false. your living environment, whether urban or rural, can affect your level of physical fitness. which of the following graphs represents a function that has a positive leading coefficient Ferrante Company sells 27,000 units at $47 per unit. Variable costs are $26.32 per unit, and fixed costs are $184,300. Determine (a) the contribution margin ratio, (b) the unit contribution margin, and (c) income from operations. please give me a answer soon. thank youFLECTION QUESTIONS: 1. What is important to pay attention to as you read media stories about Indigenous business?