Select the correct answer. During which stage of fetal development do the heart and lungs of a fetus become fully developed and functional? A. first trimester B. second trimester C. fertilization D. third trimester

Answers

Answer 1

Answer: B the second trimester


Related Questions

xà phòng hóa hoàn toàn 66,6 gam hỗn hợp 2 este HCOOC2H5 và CH3COOCH3 bằng dung dịch NaOH thu được hỗn hợp X gồm 2 ancol. Đun nóng hỗn hợp X với H2SO4 đặc ở 140 độ C sau phản ứng xảy ra hoàn toàn thu được m gam nước. Giá trị của m

Answers

Answer:

IS THIS EVEN ENGLISH YES

Explanation:

ways in which soil organisms such as earth worms improve soil fertility

Answers

Answer:

by eating organic matter in the soil and excreting castings that are rich in nitrogen, phosphorus, and potassium which make the soil nourishing.

What climate zone includes much of North America, Europe, and Asia?

A. Temperate zone
B. Polar zone
C. Pacific zone
D.Tropical zone

Answers

Polar zone includes much of North America Europe and Asia

genesis high grade heat and pressure is steps in what

Answers

Answer:

Metamorphic rock.

Explanation:

This is the answer I hope this help you out. Enjoy your day!

Is Brewer's yeast a type of bacteria

Answers

Explanation:

Brewer's yeast is an ingredient used in the production of beer and bread. It is made from Saccharomyces cerevisiae, a one-celled fungus. ... Brewer's yeast is considered a probiotic and is used to aid digestion.

Answer:

Well Brewers Yeast is actually a Probiotic, and well a bacteria as well,

but its a good bacteria.

Explanation:

A poison placed on the tips of darts by natives of the Amazon rainforest paralyzes prey such as small mammals. Which of the prey's cells are most likely affected by the poison?
muscle cells
epithelial cells
red blood cells
white blood cells

Answers

Answer:

Muscle cells

Explanation:

If they are paralyzed it stops use of the muscles. like... just read it bro

The cells in the prey that are most likely influenced by the poison present in the darts exist the muscle cells.

What are muscle cells?

A muscle cell exists also known as a myocyte when directed to either a cardiac muscle cell or a smooth muscle cell as these exist both small cells. A skeletal muscle cell exists long and threadlike with many nuclei and is named a muscle fiber. Muscle cells originate from embryonic precursor cells named myoblasts.

The muscle cells exist as a specialized kind of cell (one of the four tissues) that can contract to exert action.

These cells (muscle cells) can be paralyzed by utilizing various inhibitors of movement such as poisons.

In conclusion, the cells in the prey that exist most likely affected by the poison present in the darts exist the muscle cells.

The cells in the prey that exist most likely influenced by the poison present in the darts exist the muscle cells.

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*EARTH SCIENCE CLASS*

1. Scales are used to figure out the ratio of the distance in the map to the actual distance between locations.

A. what is the name of two different types of scales found on maps?

B. how does each scale work?

Answers

Answer:

Bar and lexical.

Explanation:

Bar and lexical are the name of two different types of scales that are found on maps. Bar scales are used more frequently in the maps because they represent or show the distance ratio visually instead of in words, while on the other hand, lexical scales may be expressed in words, as a ratio, or as a fraction. Examples are 1:10,000 or 1/10,000. Using map scales is very important in the real world if you want to find out the distance you are traveling.

what is photosynthesis???
..


..​

Answers

Hope this helps! Please mark me as brainliest!

Have a wonderful day :)

the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product

My pet mouse had babies and then it ran away and i dont know what to do

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Are the babies still alive??

why should we drink 6 to 8 glasses of water everyday even water does not provide any energy? pls answer in short ​

Answers

Answer:

√7-2√10x/√6-√2/1-√3-5/√5

help is needed please!!

Answers

Answer:

That would be the 3rd option.

Explanation:

Plants rely on nitrogen fixation to fix atmospheric nitrogen into nitrogen that they can use to perform photosynthesis. By removing that step, there would be significantly less reliance on nitrogen fixation as plants can do the work.

pls help I will mark brainlest​

Answers

Answer:

Renewable resources can be replaced by natural processes as quickly as humans use them. Examples include sunlight and wind. Nonrenewable resources exist in fixed amounts. They can be used up.

I Hope this will help you if not so advance sorry :)

Renewable can be used again and again like sunlight but non-renewable once are used are gone forever

how do you think the weight and the lift should not be of the same magnitude​

Answers

Answer:

There is because one is short and one is long

I need help which one is it so I can pass summer school

Answers

Answer:

the correct answer is will be option b

Explanation:

I hope this help you have a great day

Which of the following statements about biomolecules is true?
I. Biomolecules are the basis of life.
II. Biomolecules are involved in the metabolic processes of all living organisms.
III. Biomolecules are inorganic molecules.

Answers

1. TRUE because Biomolecules are important for the functioning of living organisms
2. TRUE because they involve in all the metabolic process
3.FALSE because they are organic molecules

help is needed please!!

Answers

Answer:

| and ||

Explanation:

I haven't heard of heavy metal exposure causing nervous system damage, but I have heard that when you inhale during mining, you are inhaling all different particles and dust which causes other respiratory diseases, such as chronic obstructive pulmonary disease. Noise pollution is definitely true as people have lost their hearing from all the noise underground which also caused headaches. This is my opinion, sorry that I'm late!

In garden peas, the allele for tall plants is dominant over the allele for short plants. Imagine that a true-breeding tall plant is crossed with a short plant. Then one of their offspring is test crossed. Out of 20 offspring resulting from the test cross, about how many should be tall

Answers

Answer:

10

Explanation:

The allele for tall plants is dominant over the allele for short plants. A true-breeding tall plant is crossed with a short plant, and one of their offspring is test crossed. Out of 20 offspring resulting from the test cross, about 10 and should be tall.

what are the two characteristics of Pine due to which it is not placed under sub division angiosperms​

Answers

Answer:

The angiosperms, or flowering plants, are the largest and most species-rich phylum of plants, with more than 250,000 species estimated.

Defining Characteristics

The term "angiosperm" derives from two Greek words: angeion, meaning "vessel," and sperma, meaning "seed." The angiosperms are those plants whose seeds develop within a surrounding layer of plant tissue, called the carpel, with seeds attached around the margins. This arrangement is easily seen by slicing into a tomato, for example. Collectively, carpels together with the style and stigma are termed the ovary, and these plus associated structures develop into the mature

Explanation:

sler Test
Select the correct location on the image.
Identify the position on the graph that gives the carrying capacity of the population.
population
y 1
2,000
1,500
Population Size
1,000
500
0
6
24
12 18
Time (months)
Reset
Next

Answers

First, there is a need to understand what the carrying capacity is as it relates to the environment:

Carrying capacity refers to the maximum number of individuals of a particular species that and environment can support based on the resources it has. The population of a species in an environment grows and oscillates around the carrying capacity of the environment.

Now let us look at the graph. The population size grew from 0 and then leveled off at 2,000 with time. The leveling-off also happened without any oscillation, meaning that the maximum population size the environment can support is 2,000.

Hence, the portion on the graph that indicates the carrying capacity would be the plot where the population size is 2,000 and the time being between 12 and 18. This has been circled and labeled as 'K' in the attached image.

More about carrying capacity can be found here: https://brainly.com/question/20270121

Answer:

2,000

Explanation:

Right on Plato ;)

Determine if the statement is true or false, and why. “Most features are caused by a mixture of inheritance and environmental factors.”
A. False, it should read “Most features are caused by inheritance.”
B. True
C. False, it should read “Most features are caused by environmental factors.”
D. False, it should read “All features are caused by a mixture of inheritance and environmental factors.”

Answers

The statement is False, it should read, Most features are caused by inheritance of a character. Thus option A is correct.

What is inherited trait ?

Inheritance is defined as the transfer of genetic information from parents to their offspring.

The transferred characters or traits include eye color, hair color, and blood type.

Trait can be defined as the genetic character which can be transmitted by the parent to its offspring during fertilization.

The trait which is expressed phenotypically is called as dominant trait while the other trait which is not expressed called as recessive trait.

These variations are observed in the species due to survival benefits or genetic drift.

Acquired traits are acquired by an individual in his lifetime which is due to their own activities or external influence.

Like inherited traits, acquired traits are unable tp pass to the next generation like ability to dance, cook.

Thus option A is correct.

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PLSSS HELPP- Study the qualities below. Which unit of measure is being described? • used to measure length • smaller than a meter O centimeter 0 kilometer 0 hectometer O dekameter​

Answers

Answer:

centimeter

Explanation:

Description:

used to measure lengthsmaller than a meter

All answer choices are units that are used to measure length so the first hint isn't much help.  

The only unit listed that is smaller than a meter is a centimeter so the answer would be centimeter.

1 Centimeter = 0.01 Meter

( If it helps to remember centi means one hundredth, so centimeter means one hundredth of a meter )

centimeter is the lowest standard unit of measure the length.

What Is standard unit of measurement of length?

The product of speed and time can be represented as distance.

d=s×t, where d is the distance m, t is the time taken to cover s

s is the speed in m.s-1

Different units can be used to measure Length like centimeters, inches, meters, it can be classified into two types such as Standard units of measuring length and non-standard units of measuring length.

Standard Units of Measuring Length include the pre-defined  such as If two measure the length of the same object using any standard unit will get the same result.

standard units of length are measured in the form of meters, centimeters, inches, feet. It can be up two types such as Imperial units and metric system units.

Imperial System is based on existing units, examples are nautical mile,  mile, rod, inch etc.

Metric units are kilometer, hectometer, decameter, meter, centimeter, and millimeter etc.

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Which of the following is a start codon?
A.UAG

B.AUG

C.UAA

D.UGA

Answers

Answer:

AUG

Explanation:

you can use a codon chart to help or double check.

B) you can use a software to check

How many phenotypes are possible from the 3 alleles coding for human blood? A 3 B. 4 C. 5 D. 6​

Answers

A child receives one of the three alleles from each parent, giving rise to six possible genotypes and four possible blood types (phenotypes).
B. 4

There are 4 phenotypes are possible from the 3 alleles coding for human blood. The correct option is B.

What is phenotype?

The set of qualities or characteristics that can be observed in an organism are known as its phenotype in genetics.

The word includes an organism's anatomy, developmental processes, physiological and biochemical characteristics, behaviour, and the outcomes of behaviour.

The genotype of an individual is their own DNA pattern. More specifically, the two alleles a person acquired for a particular gene are referred to by this phrase.

The clinical presentation of a patient is the observable expression of this genotype, or phenotype.

A, B, AB, and O are the four phenotypes of blood that can occur. The gene that determines blood type has three alleles. Six distinct genotypes are possible because there are three different alleles.

Thus, the correct option is B.

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The active site of an enzyme is _____________. Group of answer choices the region of an enzyme that attaches to the product the region of a product that detaches from the enzyme the region of a substrate that is changed by an enzyme the region of an enzyme that attaches to a substrate the highly changeable portion of an enzyme that adapts to fit the substrates of various reactions

Answers

Answer: The correct option is (the region of an enzyme that attaches to a substrate).

Explanation:

The anabolic and catabolic processes in a cell are directed and regulated by enzymes. An enzyme has the ability to speed up a metabolic reaction by lowering the amount of energy needed to start the reaction. Without enzymes, these processes would be extremely slow. They also arrange the reacting molecules in a manner that will cause the chemical change to take place rapidly. It does so through the following steps:

--> molecules of substrate combine with the enzyme at its active site.

--> the substrate molecules combine with enzyme molecules for a short time, forming an enzyme-substrate complex.

--> New substance ( product) is formed which leaves the active site of the enzyme thereby making it free for another reaction to take place.

In conclusion, the ACTIVE SITE of an enzyme is the region of an enzyme that attaches to a substrate allowing chemical reaction to take place.

Give a positive and a negative impact of an environmental law or regulation.

Answers

Answer:

negative impact

Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water. These negative impacts can affect human behavior and can prompt mass migrations or battles over clean water.

positive impact  

Environmental regulations have greatly improved air and water quality, especially in areas that were dirtiest before regulation. Reducing airborne particulates is especially beneficial, saving thousands of lives and preventing millions of illnesses each year.

An atom with 17 protons 17 neutrons and 17 electrons has a net charge of what

Answers

Answer:

0

Explanation:

Since we have the same amount of protons and electrons, our net charge is 0.

Hope this helped,

~cloud

An example of a density-independent factor that affects a population's growth is Select one: a. insects eating your tomato plants. b. your tomato plants competing for water. c. a fungus infecting your tomato plants. d. frost killing all of your tomato plants. e. All answers are correct.

Answers

Answer:

The correct answer is - D. frost killing all of your tomato plants.

Explanation:

Density independent factors are the factors that are limiting factor that are affects the size of population of the living beings without being affected by density of population. In such factors density of population does not play any role or affect the size of population.

In the given option other than frost all are density dependent factors affecting size of population.

Biological method involves all the following except

(a) data collection (b) observation (c) proportion (d) experiment​

Answers

Its c you are very welcome

Signal transduction pathways that include a phosphorylation cascade

are generally initiated by a phosphorylase enzyme and limited to one step
are generally inactivated by a kinase enzyme and decrease signal transduction efficiency
are propagated by steroid hormone receptors to reach the final cellular response in one step
cause a structural change in each phosphorylated protein, with the addition of a phosphate group to activate the protein

Answers

Answer:

Signal transmission paths Learn how signals are transmitted within a cell from the cell membrane receptor. The chains of molecules that pass intracellular signals are known as intracellular signal transduction pathways.

Signal transduction pathways that include a phosphorylation cascade cause a structural change in each phosphorylated protein, with the addition of a phosphate group to activate the protein. Thus, the correct option for this question is D.

What is the Phosphorylation cascade?

The Phosphorylation cascade may be characterized as a series of signaling pathways that significantly involve the activation of one enzyme through the effect of other in order to accomplish the downstream signaling pathway.

According to the context of this question, the process of phosphorylation involves the addition of a phosphate group over the compound in order to stimulate its activity. This is accomplished by the structural change in each phosphorylated protein, with the addition of a phosphate group to activate the protein.

Therefore, the correct option for this question is D.

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I need help!! Identify the types of inheritance based on the expression of alleles in the organism.

Answers

Answer:

multiple, recessive, dominant

Explanation:

multiple, many traits show. recessive two can show because they share. and dominant rule out the other ones so it is the only one.

Answer:

This is the answer

Explanation:

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