What is an amniotic egg?

Answers

Answer 1

Answer: The amniotic egg was an evolutionary invention that allowed the first reptiles to colonize dry land more than 300 million years ago. Fishes and amphibians must lay their eggs in water and therefore cannot live far from water. ... Within the chorion is the amnion, the membrane for which the amniotic egg is named.

Explanation:


Related Questions

Choc
Fill in the blanks to complete these sentences about rock characteristics.
A rock is an
of minerals.
The
of a rock is a result of its mineral composition.
Most rocks contain more than one type of

Answers

Answer and Explanation:

A rock is an made of minerals??

The forming of a rock is a result of its mineral composition??

Most rocks contain more than one type of mineral??

Answer:A rock is an made of minerals??

The forming of a rock is a result of its mineral composition

Explanation:

Which nucleic acid serves as a strand for protein synthesis?
a. tRNA
b. ribosome
c.mRNA
d.dATP

Answers

Answer:

c.mRNA...............

A person with a bacterial infection begins to feel hot and feverish. This response MOST likely helps the body fight infection by —

Answers

Answer:

making it hard for bacteria to leave the body

Explanation:

The amount of energy at each trophic level in an ecosystem decreases as it moves through the ecosystem. Typically, only about 10 percent of the energy at one trophic level is transferred to the next level. The remaining energy is lost through metabolic processes as heat.

Suppose that, in the ecosystem modeled above, 150,000 kcal (kilocalories) of energy are contained within green plants. Assuming that the amount of energy transferred from one trophic level to the next is exactly 10 percent, determine the following amounts of energy in the ecosystem.

Answers

Answer:

Explanation:

Energy transferred to next trophic level=10%×150,000kcal

=10/100×150,000

=15,000kcal

The amount of the energy in the ecosystem should be considered as the 15,000kcal.

Calculation of the amount of energy:

Since there is  150,000 kcal (kilocalories) of energy are contained within green plants.

And, 10 percent of the energy at one trophic level is transferred to the next level.

So here the amount of energy be like

= 10% of 150,000

= 15,000 kcal

Hence, The amount of the energy in the ecosystem should be considered as the 15,000kcal.

Learn more about energy here: https://brainly.com/question/11233305

In order to assign a Richter magnitude to an earthquake event, a scientist would have to measure the _________ waves on a seismogram.
a. secondary
b. surface
c. primary

Answers

Primary waves on a seismograph

When you flex your knee, where are the fulcrum and the load? Where is the muscle that provides the effort located?

Answers

Explanation:

the fulcrum is the knee joint

the load is probably the radius and ulna with the muscle on it

while the effort could be tendons and the muscle on the femur

I NEED HELP ASAP PLEASE!!

Answers

Answer:

yes you're good. D its the right

PLEASE HELP ITS MY LAST QUESTION
Oxygen is a product of the electron transport chain.
True or False

Answers

Answer:

False :)

hope this helps m8

It’s False. I’m sure that this is the answer.

An igneous rock has a coarse texture and is dark in color. How else can this rock be accurately described?

small crystals
cooled quickly
produced from magma
formed at Earth’s surface

Answers

Answer:

C. produced from magma.

D. formed at Earth’s surface

Explanation:

Earth crust refers to the outermost layer or thin shell which makes up the earth such as sedimentary, metamorphic and igneous rocks.

The Earth crust is typically made up of two (2) main types;

1. Oceanic crust: this crust has a thickness ranging from 5 km to 10 km and comprises of denser rocks such as diabase, gabbro and basalt.

2. Continental crust: this crust has a thickness ranging from 30 km to 60 km and comprises of minerals such as quartz, silicate, feldspar, aluminum and less dense rocks such as granite

An igneous rock has a coarse texture and is dark in color. Also, an igneous rock can be accurately described as being produced from magma and formed at Earth’s surface.

Answer:

Produced from magma

Explanation:

I got it right on the test hope this helps

☺️

The concept of induced fit refers to the fact that a. Substrate binding may induce a conformational change in the enzyme, which them brings catalytic groups into proper orientation. b. When enzymes bind substrates, the substrates are bought into proximity to make a chemical reaction favorable. c. When a substrate binds to an enzyme, the enzyme induces a loss of water from the substrate. d. When a substrate binds to an enzyme, free energy is released due to non-covalent interactions.

Answers

Answer:

Option A, Substrate binding may induce a conformational change in the enzyme, which them brings catalytic groups into proper orientation.

Explanation:

Induced fit concept refers to introduction of continuous change of enzyme conformation on substrate binding. This change in the shape of enzyme either inhibit or enhance the activity of enzyme. This makes the enzyme catalytic and hence lower the activation energy thereby increasing rate of reaction.

PLS ANSWER QUICK! I WILL GIVE POINTS, ITS JUST A YES OR NO QUESTION!


In two or more complete sentences, describe a scenario where human activities are related to an increase or decrease in biodiversity in an ecosystem.

I WAS THINKING OF WRITING ABOUT THE DEFORESTATION IN THE AMAZON, HOW THAT CAN KILL THE ANIMALS. OBV IF THE ANIMALS ARE DEAD THAT CAUSES A DECREASE IN BIODIVERSITY. IS THIS RIGHT?

Answers

Answer:

Yes?

Explanation:

what does it mean to say that CO2 becomes "fixed" during photosynthesis

Answers

Answer:

What does it mean to say that CO2 becomes "fixed" in talking about photosynthesis?

A. CO2 becomes bonded to an organic compound.

Explanation:

The kidneys and sweat glands both work to prevent excesses of
a) either uric acid or urine in the body.
b)either water or salt in the body.
c)either carbon dioxide or oxygen in the body.
d) either feces or pH levels in the body.

Answers

Answer: The kidneys and sweat glands both work to prevent excesses of either water or salt in the body

Explanation:

The kidneys and sweat glands both work to prevent excesses of either water or salt in the body. Thus, the correct option is B.

What is function of kidney and sweat glands?

Both the kidneys and the sweat glands excrete nitrogenous wastes, water and electrolytes. They are also involved in maintaining acid-base balance.

kidney is the organelle present below the abdomen whereas the sweat gland is exocrine glands that release the substances into a duct or opening to the inside or outside of the body.

For more information regarding kidney and sweat glands, visit:

https://brainly.com/question/3657116

#SPJ2

practice: density calculations

Answers

What about it?
Tell us more

Which type of law is used to discipline members of the armed services?

Answers

Answer: D

Explanation: because they are in the military and that’s the only law I would recommend if someone needed discipline in the military

How does gene regulation relate to organism complexity?

Answers

Answer:

Organisms that are more complex, such as eukaryotes, have cells that are specialized for specific functions. Gene regulation needs to be more complex to produce these specialized cells for complex organisms.

Hope this helps!

More complex organisms such as eukaryotes have cells that are specialized for specific functions where gene regulation needs to be more complex for complex organisms to produce these specialized cells.

What is Gene regulation?

The process of turning genes on and off, defined as gene regulation which is an important part of normal development. For example, genes turn on and off in different patterns during development to make a brain cell look and function differently than a liver cell or a muscle cell.

Gene expression is controlled at two levels which is transcription which is controlled by limiting the amount of mRNA that can be produced from a particular gene and the second control is through post-transcriptional events which allow the translation of mRNA into protein.

Thus, more complex organisms such as eukaryotes have cells that are specialized for specific functions where gene regulation needs to be more complex for complex organisms to produce these specialized cells.

Learn more about Gene expression, here:

https://brainly.com/question/21217992

#SPJ6

The image here shows potential outcomes for chromosomes at a particular stage of meiosis. Which questions appropriately assess what is happening in the image. Select ALL that apply.
A) How does crossing over increase the outcome of meiosis?
B) How does fertilization increase genetic diversity in a diploid organism?
C) How does independent assortment increase genetic diversity during meiosis?
D) How many potential combinations result from chromosomes alignment during metaphase I?
E) How does chromosome methylation result in silencing specific genes during gamete formation?

Answers

According to the random arrangement of homologous chromosomes in the equatorial plane, the correct question is D) How many potential combinations result from chromosomes alignment during metaphase I?

How does the random arrangement of tetrads occur?

During metaphase 1, chromosomes' homologous pairs migrate to the equatorial plane. Once there, they randomly aline facing their kinetochores to the opposite poles.

The random arrangement of tetrads is different in every cell going through the meiosis process. This is because there is no equal alinement between two cells.

When tetrads arrange in the equatorial plane, there is no predetermined order. Each homologous chromosome of each tetrad faces any of the poles and then migrates to it while separating. Each of the chromosomes has two possibilities for orientation at the plane.

When the new haploid cells are formed, the number of variations in each cell is also different and depends on the chromosomes that form that cell.

This random order in the equatorial plane is what introduces variation into the gametes.

The correct question is D) How many potential combinations result from chromosomes alignment during metaphase I?

You can learn more about the random arrangement of homologous chromosomes at

https://brainly.com/question/14140702

https://brainly.com/question/8006347

https://brainly.com/question/1185300

Answer:

C and D

Explanation:i just did the problem on USA test prep

The diagram below shows a ciliated cell from the lining of the airway.

Which of the following states its function?Required to answer. Single choice.
(1 Point)


A)it is the place where diffusion of gases take place

B)it moves mucus and sweeps dust from lungs

C)it secretes trypsin

Pls tell meeee quickkk

Answers

Answer:

the answer is a. any ciliated cell in lungs catches bacteria & debris from lungs causing cough, difficulty breathing, etc.

can develop into asthma, infection of pleura, and bronchitis...

Sedimentary rocks such as sandstone often contain cracks or ripples. These marks show that a number of sedimentary rocks form

A. In pockets of molten rock.

B. Inside ice in mountain ranges

C. Under sands in the desert

D. At the bottom of bodies of water

Answers

C the under sands in the desert

A newly identified virus infects a eukaryotic host cell without producing virions right away, with a long period where the host is largely unaffected by the infection. What's the best description of this virus?
A: This virus rapidly causes lysis of the host cell
B: This virus has a long period of latency
C: This virus is a bacteriophage
D: This virus can't replicate

Answers

The best description of the virus is that the virus cannot replicate. The correct option is D.

What is a virus?

A virus is an infectious agent which is non-living normally, but it becomes alive when come in contact with any living cell. It causes many diseases in humans, animals, and plants.

Here, the virus is not producing virions, which means it doesn't cause lysis. It doesn't affect the host, so do not have a long period of latency, and is not a bacteriophage, so the virus is not replicating.

Thus, option D: This virus can't replicate is correct.

Learn more about viruses, here:

https://brainly.com/question/1427968

#SPJ2

I will mark brainiest for correct answer

A pelican has a dip netting beak. How does it eat?

A. It traps fish between its upper and lower mandible much like a scissor,
B. It takes a big gulp of water with fish and filters the water off of the fish before swallowing,
C. It opens holes in trees and eats insects beneath the surface of the wood,
D. It burrows in the mud to find insects and other small invertebrates beneath the surface

Answers

Answer:

b is correct

Explanation:

Answer:

b they scoop them and then drain the water a swallow all remaining animals

The maximum number of individuals that a population
can support and sustain is known as ?
A Carrying capacity
B Limiting Factor
C Migration
D Density

Answers

Answer:

the answer would be migration

Why don't you have mechanical energy
when
you are
laying on the ground?

Answers

Answer:

If an object is lying on the ground, and is nowhere near a "hole" or a cliff, then for the purposes of this system, the object would have a height of zero, therefore would have no gravitational potential energy. And therefore, no work could be performed on the object by gravity.

Explanation:

Prior to Mendel, scientists thought that an offspring _____.


inherited traits from only one parent

blended the traits of both parents

demonstrated traits randomly

exhibited certain traits from each parent

Answers

Answer:

blended the traits of both parents

Explanation:

through which plant structure does water move by capillary action?

Answers

Answer:

Xylem

Explanation:

Some argue that solar power should be the main energy source for the United States. Which argument could be used against this idea? A. It contributes to global warming. B. It can only be produced in sunny areas. C. It is a nonrenewable resource. D. It releases greenhouse gases.

Answers

Answer:

A. It contributes to global warming

Explanation:

Solar power is the power of the future and is an essential nonrenewable source of energy for man. Solar power is driven by the incoming solar energy in the form of solar rays.  Solar power is eco-friendly and doe not cause any harm can be sued in the summer season and has ample scope for greenhouse gases. As per the statement, the solar power should be used as the main energy source in U.S can be contradicted by saying it contributes to global warming.

At what light intensity do both sun plants and shade plants have the same rate of
photosynthesis?

Answers

Answer:

The rate of photosynthesis is at a maximum over a narrow range of light intensities.

Explanation:

Light provides the energy required to drive the process of photosynthesis. Starting from a low light intensity, the rate of photosynthesis increases as intensity increases.  Hopefully helps ig

What is the primary mechanism associated with the role of fluoride in prevention of dental caries?​ a. ​Fluoride increases calcium absorption, which increases crystal formation of teeth b. ​Fluoride increases salivation which aids in the removal of bacteria and the foods needed to sustain bacterial growth c. ​Decay is reduced due to the inhibitory effects of fluoride on growth of bacteria on the teeth d. ​Fluoride becomes incorporated into the crystalline structure of teeth, making them less susceptible to decay e. ​Decay is inhibited due to neutralization of organic acids produced by bacteria on the teeth

Answers

Answer:

d. ​Fluoride becomes incorporated into the crystalline structure of teeth, making them less susceptible to decay

Explanation:

Dental caries results when cariogenic (caries-causing) bacteria metabolize carbohydrates or sugars present in the mouth for their energy needs, producing organic acids as byproducts, thus lowering the pH of the plaque biofilm.

The hydroxyapatite of tooth enamel is composed mainly of phosphate ions (PO₄³⁻) and calcium ions (Ca⁺). Under normal conditions, there is a stable equilibrium between the calcium and phosphate ions in saliva and the crystalline hydroxyapatite. At low pH (acidic conditions), there is a shift in equilibrium resulting in the dissolution of hydroxyapatite from tooth enamel, a process known as demineralization. A reverse process called remineralization (the process of incorporation of minerals in tooth enamel) occurs when the saliva, acting as a buffer elevates pH. When equilibrium is shifted to favor continued demineralization, dental caries results.

However, when fluoride is present in saliva, fluorapatite, rather than hydroxyapatite, forms during the remineralization process as fluoride ions replace hydroxyl groups in the formation of the apatite crystal lattice.

Fluorapatite is less soluble than hydroxyapatite making it more resistant to demineralization, even under conditions of low pH. Thus, fluoride acts as an effective anticaries agent.

What is one characteristic that a star’s spectrum can reveal?
A.
its direction
B.
its temperature
C.
when it was formed
D.
its constellation

Answers

Answer:

B. Temperature

True or False: There are no shortcuts in
dichotomous keys!

Answers

True

You can’t skip any step; you need to do each step in order.

Answer:

True

Explanation:

No need to skip

Other Questions
Find the volume and explain your answer round to the nearest tenth!! similarities of ancient and modern philosophy A certain town never has two sunny days in a row. Each day is classified as being either sunny, cloudy (but dry), or rainy. If it is sunny one day, then it is equally likely to be either cloudy or rainy the next day. If it is rainy or cloudy one day, then there is 60% of chance that it will be the same the next day, and if it changes then it is equally likely to be either of the other two possibilities. In the long run, how frequent are we observing a day for which it is rainy and the next two days are also rainy what is the area of a rectangle whose length is (2x-1) cm and whose width is (X+2) cm?help. PLS HELP ASAP! GIVING BRAINLIST! In which situation would a system of currency exchange be necessary? A. A person in Nigeria trades his bicycle for his friends new skateboard. B. A business in Egypt pays its workers their wages at the end of the week. C. A person in Kenya pays the taxes she owes to the local government. D. A business in South Africa buys automobile parts from a business in China. Montana, Idaho, and ______ grow sugar beets. New Mexico Arizona Colorado Nevada write briefly about your house how are you this which are the rooms of your house write five or six complete in spanish A 2.00 g sample of ammonia (NH3) reacts with 4.00 g of oxygen (O2) according to the equation 4NH3+5O24NO+6H2O. How much excess reactant remains after the reaction has stopped ( knowing that NH3 is the excess reactant )? find the difference between (14-3x) and (-9x+7) 0.6 + 15 b + 4 = 25.6. There are 20 girlsand 12 boys in a class.What would be the probability ofrandomly selecting a girl? (Decimals please) alfred hershey and martha chase designed an experiment to determine the chemical makeup of griffith's transforming principle. define the term bacteriophage and explain why this organism was a good choice for this particular experiment. describe the procedure of the experiment using the terms bacteriophage, DNA, and proteins in your answer. Describe the results of the experiment and connect them to hershey and chases conclusion What does a model of the carbon cycle show? A. The amount of Earths carbon is constant. B. The amount of Earths carbon cannot be determined.C. The amount of Earths carbon decreases.D. The amount of Earths carbon increases. I think its A Read this excerpt from "A Student's Guide to Global Climate Change."Climate change will lead to more hot days and more heat waves. As a result, people will need to use more air conditioning to stay cool. As people use more air conditioning, electricity shortages and blackouts could increase. Because most electricity is currently produced by burning fossil fuels, using more electricity to run air conditioners will also add more greenhouse gases to the atmosphere.What problem does the excerpt present? There will be more hot days and heat waves in the future. People will need air conditioning more often in the future.Power shortages and blackouts may increase.Greenhouse gases are being added to the environment. WILL MARK BRAINLIEST!!!I MET a traveller from an antique landWho said: Two vast and trunkless legs of stoneStand in the desert ... Near them, on the sand,Half sunk, a shattered visage [face] lies, whose frown,And wrinkled lip, and sneer of cold command,Tell that its sculptor well those passions readWhich still survive, stamped on these lifeless things,The hand that mocked them, and the heart that fed;And on the pedestal these words appear:"My name is Ozymandias, king of kings:Look on my works, ye Mighty, and despair!"Nothing beside remains. Round the decayOf that colossal wreck, boundless and bareThe lone and level sands stretch far away.Select one piece of evidence that supports the situational irony of the poem.A Nothing beside remainsB I met a travelerC Its sculptor well those passions read When is season 4 of star coming out can someone look it up please Which of the following is the correct decreasing order of hydrogen ions concentrations? how many molecules of NaCl are in 32.5 G i need a description of the Jews of the Renaissance and Reformation