During which stage of fetal development do the heart and lungs of a fetus become fully developed and functional?

A.
first trimester
B.
fertilization
C.
third trimester
D.
second trimester

Answers

Answer 1

Answer:

C.

Explanation:

The fetus will develop a set of lungs in the 36th week, which is the third trimester

Answer 2

Answer:

Third trimester

Explanation:

Plato


Related Questions

All of the following are found in a DNA molecule except

Answers

Answer:

But in a molecule of DNA you can find four nitrogen-containing nucleobases: cytosine, guanine, adenine, and thymine. It also contains a sugar called deoxyribose and a phosphate group.

Explanation:

The Last Supper, also called the Lord's Supper, was originally the Passover.

A).True

B).False

Answers

Answer:

f

Explanation:

Answer:

(A) True

Explanation:

When you move material across the cell membrane from an area of
high concentration to an area of low concentration.

1. Passive Transport
2. Active Transport

Answers

Passive Transport

Explanation:
When rolling a wagon up a hill, it would require more energy (activity) to get to the top; this is similar to moving from a low concentration to a higher. When rolling down a hill with a wagon, it would be more easy (passive); this is similar to moving from high to low concentration.

Answer: it’s a type of active transport.

Explanation:

Just took it on edge:)


How did the moon fom?

Answers

Answer:

It was formed around 4.5 billion years ago when something the size of mars smashed into the Earth, which made matter fly into orbit.

Indicate the relative ages of the fossilized organisms listed below by
placing them in a strata on the diagram of a cross section of sedimentary rock below

Answers

Answer:

a-youngest fossils

b-mammal fossils

c-first dinosaurs

d-first land plants

e-trilobites

f-oldest fossils

a-youngest fossils

b-mammal fossils

c-first dinosaurs

d-first land plants

e-trilobites

f-oldest fossils

What is fossils?

Fossils generally helps in relative dating of rocks. The Trilobites are considered the oldest in this rock sequence when we apply the principle of superposition of strata. The principle states that "in an undeformed/undisturbed sequence of rock, the oldest is always at the bottom while the youngest is on top". This principle therefore explains why the Trilobites at the base are considered the oldest.

How is the layer of iridium used to tell the relative age of different rock strata and fossils" it can be said that rock strata and fossils can have there ages detected by following the layer of irudium over the newer ones recently dropped.

It is important to note that iridium is an element that has had its deep root on earth for the longest of times Because of this unending  deposition of iridium all over the earth. There is a particle of iridium on most rock strata and fossils allover the earth. Now rock strata and fossils can have there ages detected by following the layer of irudium over the newer ones recently dropped.

Therefore, a-youngest fossils

b-mammal fossils

c-first dinosaurs

d-first land plants

e-trilobites

f-oldest fossils

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Metano (CH4) puede regresar a la atmosfera como dioxido de carbono a traves del proceso de? Porfa ayuden es un examen >.

Answers

Answer:

Combustión

Explanation:

La combustión es el proceso mediante el cual la materia reacciona con el oxígeno y se convierte en dióxido de carbono y agua.

Otro nombre para la combustión es quema. Cuando el metano se quema en el aire, se convierte en dióxido de carbono y se devuelve a la atmósfera según la reacción;

CH4 (g) + 2O2 (g) -----> CO2 (g) + 2H2O (g)

When mRNA is made from DNA it is called
The then gets translated into a
protein with the help of a ribosome. In a Gene each base triplet or stands for either start,
stop, or These are what chain together to form

Answers

I haven’t took biology since last year but I’m pretty sure your answer is Amino Acids

Answer:

When mRNA is made from DNA it is called transcription

Each base triplet or Codon

Start, Stop, or an Amino Acid

these are amino acids that chain together to form Proteins

Hopefully I got all the blanks.  Maybe put underscores or something in next time.  Very Confusing

what does it mean when they say that rock erodes?
a. it gits thicker and more compact
b. it pushes up through the ground
c. it breakes down and dissolves
d. it forms a new kind of rock

Answers

Answer: c) it breaks down and dissolves

Answer:

c

i don't know how to explain it but erode means to gradually wear away so that gives you the answer

Someone help me match the last two with their definition?
Diffusion and facilitated diffusion

Answers

Answer:

Explanation:

3. diffusion

4. facilitated diffusion

can anyone help me with this question?


how do enzymes affect activation energy in a chemical reaction

Answers

Answer:

Enzymes lower the activation energy that is needed, making reactions happen at a lower temperature that they could without the enzyme. This speeds up the rate of reaction.

Explanation:

Answer:

they speed up the chemical reaction

Trisodium phosphate The prefix Tri means what? *

Answers

Answer:

the prefix tri means three

Answer:

tri means "three"

Explanation:

common english vocabulary words that contain this prefix include trio and triangle.

Which of the following is a major challenge to volcano preparedness?

Answers

Answer:

The main parts of a volcano include the magma chamber, conduits, vents, craters and slopes.

Explanation:

6 ways volcanoes benefit Earth, our environment

Atmospheric cooling. ...

Land formation. ...

Water production. ...

Fertile land. ...

Geothermal energy. ...

Raw materials.

what is an important effect of mars low temperature and low air pressure

Answers

Standing on the ground and looking up, you are looking through the atmosphere. It might not look like anything is there, especially if there are no clouds in the sky. But what you don’t see is air – lots of it. We live at the bottom of the atmosphere, and the weight of all the air above us is called air pressure. Above every square inch on the surface of the Earth is 14.7 pounds of air. That means air exerts 14.7 pounds per square inch (psi) of pressure at Earth’s surface. High in the atmosphere, air pressure decreases. With fewer air molecules above, there is less pressure from the weight of the air above.

Pressure varies from day to day at the Earth’s surface - the bottom of the atmosphere. This is, in part, because the Earth is not equally heated by the Sun. Areas where the air is warmed often have lower pressure because the warm air rises. These areas are called low pressure systems. Places where the air pressure is high, are called high pressure systems.

A low pressure system has lower pressure at its center than the areas around it. Winds blow towards the low pressure, and the air rises in the atmosphere where they meet. As the air rises, the water vapor within it condenses, forming clouds and often precipitation. Because of Earth’s spin and the Coriolis Effect, winds of a low pressure system swirl counterclockwise north of the equator and clockwise south of the equator. This is called cyclonic flow. On weather maps, a low pressure system is labeled with red L.

A high pressure system has higher pressure at its center than the areas around it. Winds blow away from high pressure. Swirling in the opposite direction from a low pressure system, the winds of a high pressure system rotate clockwise north of the equator and counterclockwise south of the equator. This is called anticyclonic flow. Air from higher in the atmosphere sinks down to fill the space left as air is blown outward. On a weather map, you may notice a blue H, denoting the location of a high pressure system.

How do we know what the pressure is? How do we know how it changes over time?  Today, electronic sensors in weather stations measure air pressure. These sensors are able to make continuous measurements of pressure over time. In the past, barometers were used and measured how much air pushed on a fluid, such as mercury. Historically, measurements of air pressure were described as “inches of mercury.” Today, meteorologists use millibars to describe air pressure.

Air pressure depends on temperature and density.

When you inflate a balloon, the air molecules inside the balloon get packed more closely together than air molecules outside the balloon. This means the density of air is high inside the balloon. When the density of air is high, the air pressure is high. The pressure of the air pushes on the balloon from the inside, causing it to inflate. If you heat the balloon, the air pressure gets even higher.

Answer:

not sure

gfghyn fesdf

Explanation:

What process converts RNA to an Amino Acid?

Answers

Answer:

translation

Explanation:

Translation is the process that takes the information passed from DNA as messenger RNA and turns it into a series of amino acids bound together with peptide bond

translation is the process

The graph below describes the velocity, measured in meters per second (m/s), of an object over a period of time, measured in seconds (s). Velocity over Time A B C D Velocity (m/s) 0 4 4 8 8 12 16 Time (s) Which section of the graph represents negative acceleration?​

Answers

Answer:C

Explanation:

Answer:

The answer is C

Explanation:

First part science pls help

Answers

Answer:

I am pretty sure its ribosome

Explanation:

if it's right please give me a heart hope it helps

Answer:

lysome

Explanation:

I am sure of that answer

Match the statements.​

Answers

Answer:

PHOTOSYNTHESIS:

- Light energy is absorbed

- Glucose and oxygen are products

- Carbon dioxide and water are inputs

- Chemical energy is produced

CELLULAR RESPIRATION:

- Carbon dioxide and water are outputs

- Chemical energy is released

- Glucose and oxygen are inputs

- ATP, motion and heat energy are produced

Explanation:

- Photosynthesis is process by which autotrophic organisms synthesize their food (glucose) in the presence of sunlight. The process combines carbon dioxide (CO2) and water (H20) to produce glucose (C6H12O6) and oxygen (O2), by the energy derived from absorbing light. In the process, light energy is transformed to chemical energy (glucose). The reaction is as follows:

6CO2 + 6H2O → C6H12O6 + 6O2

- Cellular respiration is the opposite of photosynthesis as it involves the metabolic breakdown of glucose molecule to produce energy usable by the cell (ATP). Cellular respiration combines glucose and oxygen (inputs) to yield carbon dioxide and water (outputs). ATP, motion and heat energy are produced in the process. The equation is as follows:

C6H12O6 + 6O2 → 6CO2 + 6H2O

9. Why is the law of conservation of mass true?
a. All atoms at the start of a chemical reaction are present at the end of the reaction.
b. All the molecules in a substance remain intact during a chemical reaction.
c. The substances at the start of a chemical reaction gather more atoms to make up
for those lost in the reaction.
d. All molecules at the start of a chemical reaction are present at the end of the
reaction

Answers

Answer:

I think it's D but I'm not too sure. Let me know if it's correct !

What are the types of asexual reproduction? Describe each.

Answers

The types of asexual reproduction include binary fission, fragmentation, and budding. Binary fission occurs when a parent cell splits into two identical cells of the same shape.

the digestive system is responsible for breaking down food into usable nutrients for the body, which other organ system works with the digestive system to transport nutrients to all the muscles, organs, and cells in the body?

Answers

Answer:

Circulatory System

Explanation:

As soon as 5he digestive system has broken down the foods to their smallest unit, the circulatory system helps to move the nutrient to where they are needed.

Blood is a medium of transport in higher vertebrates and is being pumped by the heart and flows through network of capillaries. Blood also transport oxygen that helps in the breakdown of carbohydrates to produce energy and get rid of waste such as carbondioxide through the excretory system.

Would the light reactions be affected if there were no concentration gradient of protons across the thylakoid membrane?

Answers

yes, If there were no concentration gradient of protons across the thylakoid membrane, the ATP synthase would not be able to convert ADP to ATP.

Space exploration has advanced our knowledge of the universe. Which space journey would take the longest?
A. A journey from Earth to the Sun.
B. A journey from Earth to the Moon.
C. A journey from Earth to the nearest galaxy to the Milky Way.
D. A journey from Earth to the farthest planet in our solar system.

Answers

Answer:

a journey from earth to the nearest galaxy in milky way

Answer:

A journey from Earth to the nearest galaxy

Explanation:

My big brain

What several ways in which invasive species can be introduced? (intentionally or unintentionally).

Answers

Answer: Invasive species can harm both the natural resources in an ecosystem as well as threaten human use of these resources. An invasive species can be introduced to a new area via the ballast water of oceangoing ships, intentional and accidental releases of aquaculture species, aquarium specimens or bait, and other means.

100 POINTS
a gene has the following nucleotide sequence TTCAGAGGT What amino acid sequence will the resulting protein have?

Answers

It’s very confusing sorry for that

Answer:

im not gay

Explanation:

In a codon which of the nucleotides tends to be less important for determining the corresponding amino acid and why

Answers

Answer:

el sapo

Explanation:

Since many proteins share the same first two bases, the third base is the least important.

What is codon?

A codon is a three-nucleotide (DNA or RNA) sequence that forms a unit of genomic information encoding a specific amino acid or signaling the end of protein synthesis (stop signals).

There are 64 different codons, 61 of which specify amino acids and three of which serve as stop signals.

As a result of genetic code degeneracy, many amino acids share the third base and differ only in the first two bases, making the third base less important.

Stop codons are base triplets that do not code for amino acids; there are three stop codons: TAG, TAA, and TGA.

Thus, these tends to be less important for determining the corresponding amino acid.

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The production of insulin, which is used to treat people with diabetes, is done by using bacteria. The gene for insulin is inserted into the genetic code of the bacteria. The bacteria then produce insulin in the same way as other materials. Which explanation describes one reason why bacteria are able to produce insulin?
a. All organisms produce insulin
b. Insulin is found only in humans.
c. Bacteria replicate all genes continuously
d. Bacteria and humans use comparable nucleotides in genes.​

Answers

Answer:

Explanation:

c. Bacteria replicate all genes continuously


This is due in exactly 15 minutes! I need help please ASAP!

5. Describe prokaryotic cells. Include general characteristics and indicate the one feature that eukaryotic cells have that the prokaryotic cells do not.

Answers

Answer: Prokaryotic cells lack a nucleus and membrane-bound structures. Eukaryotic cells have a nucleus and membrane-bound structures called organelles.

Hope this helps :)

Helppppp........!ASAP

Answers

Answer:

E. Confident

Explanation:

Holding eye contact, having firm movements and a strong voice are all clear indictators of a sense of self-confidence.

Answer:

I'm pretty sure it's e sry if I get it wrong

Based on the information in the table, how should the researcher classify each fungus?

A.
Fungus X is a common mold, and fungus Y is a chytrid.
B.
Fungus X is a chytrid, and fungus Y is a sac fungus.
C.
Fungus X is a chytrid, and fungus Y is a common mold.
D.
Fungus X is a common mold, and fungus Y is a sac fungus.

Answers

Answer: C, Fungus X is a common mold and fungus Y is a Chytrid.

Explanation:

I just took the test

Answer:

A. Fungus X is a common mold, and fungus Y is a chytrid

answer this question plsss

Answers

The answer is for you question is b
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