Which description best defines blastocyst? ОА. a fertilized egg OB. an egg released from the ovary Ос. a mass of specialized cells OD an embryo with a notochord Reset Next​

Answers

Answer 1

Answer:

ob

Explanation:


Related Questions

Within a plant cell, the glucose formed as a result of
photosynthesis may be used directly as
1) an energy source during cellular respiration
2) an enzyme for intracellular digestion
3) an absorber of radiant energy
4) a source of molecular oxygen

Answers

Answer:

an energy source during cellular respiration

During a dry year, which plant will most likely be able to survive in clay soil?

Answers

Answer:

A

Explanation:

Answer:4

Explanation:

Students are each given a 20-gram sample of an unknown solid compound in a clear plastic bag. They are instructed to break the material into smaller parts by gently hitting it with a hammer. Some of the parts break into large chunks and some look like a fine powder.
Which statement correctly describes these broken pieces of the sample?
The fine powder pieces are individual atoms broken from the solid.
The larger pieces are still compounds and the smaller pieces are elements.
Each piece contains the same number of atoms.
Each piece contains the same proportion of different elements.

Answers

Answer:

D - Each piece contains the same proportion of different elements

Explanation:

just took the quiz on edge 2021

D, I did the test just now and got 100% :)

I point
Bactrian camels, drcanedarves, llamas, and alpacas are all members of the same taxonomic farníly, Camelidae. Members of this family all have two tores, no homes,
true canine teeth, and a split upper lip. The family Camelidae originated in North America. The physical features of animals in this family and the family's
goopraphical origin provide evidence that all these animals -
have slowly evolved to become herbivores
live in the same type of ecosystem
have a common ancestor
exchanged DNA at some point in the past

Answers

Answer:

Have a common ancestor

Explanation:

All of these animals share many distinct traits ,while being in many different areas of the world

Why do you think species are endangered? Name some root cause of the problem.
How do you think this situation can be realistically improved?

Answers

Global warming from human activity. Mainly the burning of fossil fuels. There are many solutions that are already available. Such as solar, wind, and geothermal energy. The issue is that these solutions also have problems and are expensive. Likely a combination of them and the engineering of ways to safeguard pollutants so they don’t make it into the ecosystem will be the best way that this will improve.

Review the chart, which shows the population sizes of three African animals in 1990 and in 2000.

Population Estimates of Animals in Africa in 1990 and in 2000

1990
2000
Lions
100,000
47,000
Cheetahs
50,000
7,500
Zebras
15,000
2,500

Which explanation is best supported by the numbers in the chart?

Answers

Answer:

Population of lions are more than cheetahs and zebras.

Explanation:

The chart provides information about the population sizes of Lions, Cheetah and Zebras. According to this information, population of lions is the greatest as compared to Cheetah and Zebras. This is due to suitable conditions for the lions such as food and shelter etc in that jungle of Africa as well as strong competitor and its aggressive behaviour make them successfully survive and increase its population in the jungle.

DNA sequences in many human genes are very similar to the sequences of corresponding genes in chimpanzees. The most likely explanation for this result is that __________.DNA sequences in many human genes are very similar to the sequences of corresponding genes in chimpanzees. The most likely explanation for this result is that __________.chimpanzees evolved from humanshumans evolved from chimpanzeesconvergent evolution led to the DNA similaritieshumans and chimpanzees share a relatively recent common ancestor

Answers

Answer:

humans and chimpanzees share a relatively recent common ancestor

Explanation:

someone else has asked the same question

Some species form social groups only with members of the same gender. For example, elephants form groups with only females and their offspring. Once the male offspring reach a certain age, they leave the group and become solitary.

Which is a benefit of this type of social group structure?


Females do not have to compete for a mate.
Male offspring can belong to more than one social group.
Adult males can mate with females in several different social groups.
Females are the only ones responsible for taking care of the offspring.

Answers

Answer:

Females do not have to compete for a mate.

Explanation:

Due to grouping of animals, females do not have to compete for a mate because each group has its own male. They have a male with which she mate and produce fertile offspring and has a complete family so we can say that the benefit of such type of social group structures is that females do not have to compete for a mate in the population as compared to other animals.

Answer:

A. female's do not have to compete for mates.

Explanation:

Healthy biodiversity provides
A. Protection of water resources
B. soils formation and protection
C. Nutrient storage and recycling
D. all of the above

Answers

The answer is d, All of the above
D

Thanks me later, pa brainliest po ako salamattt

Nitrogen in plants and soil is changed into nitrogen compounds by _____.

nitrogen fixation
respiration
denitrification
photosynthesis

Answers

Answer:

I think it is denitrification but if that's not the answer then it's nitrogen fixation I'm pretty sure.

Explanation:

I'm sorry for not giving a sure complete answer

You are the RN starting your shift on a pediatric unit. You are taking care of a 7-month-old infant who has been alert and behaving in an age-appropriate manner on the previous shift. When you perform your first assessment, his parents tell you that in the last hour, he has become sleepier and did not cry when the lab technician drew blood a few minutes ago. Your response is to
A. encourage the parents to keep the room quiet to allow him to sleep.
B. document it and plan to recheck him in an hour.
C. tell his parents to make him wake up because it is not time for him to go to bed.
D. realize that lethargy in an infant is always an ominous neurological sign and immediately assess him.

Answers

Answer:

D. realize that lethargy in an infant is always an ominous neurological sign and immediately assess him.

Explanation:

Lethargy in infants can be seen in several ways. one of this is that the child may be sluggish and as if he or she has little or no energy. the child may find it difficult to be awake for feeding. And can lose alertness and pays less attention to sounds and the baby is always drowsy. The registered nurse has to assess this baby immediately because lethargy could happen because the baby may have an infection or probably have low blood sugar. Therefore the last option is the best option for the nurse to take.

can someone please help

Answers

Answer:

its the second one

Explanation:

your welcome :)


The density of a white dwarf is

Answers

Answer:

The density of a white dwarf is 1 x 109 kg/m3.

Explanation:

A typical white dwarf is half as massive as the Sun, yet only slightly bigger than Earth. An Earth-sized white dwarf has a density of 1 x 109 kg/m3. Earth itself has an average density of only 5.4 x 103 kg/m3. That means a white dwarf is 200,000 times as dense.

1 x 10⁹ kg/m³ is the density of white dwarf. It is 200000 times denser than Earth. And it is the second densest object we know after neutron star.

Based on the graph, which of these conclusions is correct? (2 points)
a
Heat is not added in portions BC and DE.

b
Heat is not added in portions AB and CD.

c
Change of state takes place in portions BC and DE.

d
Change of state takes place in portions AB and CD.

Answers

Answer:

The answer is "Option c".

Explanation:

Throughout the given question, Option c is acceptable which is based on the graph. The status of parts BC and DE are significantly changed because the temperature in the parts BC (0 degrees Celcius) & DE (100 degrees Celcius) is relatively stable to only the template would also have changed from ice and water into the vapor.

Need a bit of helpppppppppppppppppppppp thank you

Answers

Explanation:

If the concentration of molecules outside the cell is very high relative to the internal cell concentration, the rate of diffusion will also be high. If the internal and external concentrations are similar (low concentration gradient) the rate of diffusion will be low.

In an example food chain, rabbits only eat plants.
Which type of consumer are the rabbits?

Answers

plants and algae. These organisms are called primary consumers or herbivores. Some examples are rabbits, deer, tadpoles, and caterpillars. organisms are called secondary consumers.

Answer:

Herbivores

Explanation:

A rabbit is very close to the bottom and they are ‘consumers’. They are herbivores, meaning that they mainly eat plant matter. They are also prey animals so larger animals capture and eat them.

how are haploid gametes formed through meiosis​

Answers

Gametes are an organism's reproductive cells. During meiosis, a diploid parent cell, which has two copies of each chromosome, undergoes one round of DNA replication followed by two separate cycles of nuclear division to produce four haploid cells.

A certain stem cell produces only muscle cells. What kind of stem cell is this?
A. Pluripotent
B. Unipotent
C. Totipotent
D. Multipotent

Answers

the answer is (B. Unipotent)

Answer:

B) unipotent

Explanation:

Unipotent stem cells come from multipotent stem cells which can only become a few different cell types. Unipotent stem cells can be programmed to be only a specific cell type. They will only follow that one genetic path, thus the name "uni".

An object is placed at 0 on a number line. It moves 3 units to the right, then 4 units to the left, and then 6 units to the right. What is the displacement of the object?

Answers

Answer:

5

Explanation:

Distance is how far something goes and Displacement is how far it is from 0 or from the starting point. Additionally, displacement is a vector so it has a direction, in this case, left or right. To make this shorter let's just find displacement. So you're at 0 and you go 3 units to the right and so you're at positive 3 on the line. Next, you move 4 units to the left so now you're at -1. Finally, you move 6 units to the right and now you're at postive 5. Now you're +5 units away from 0 and so +5 is your displacement (5 units to the right is also correct)

Answer: +5 units or 5 units to the right (as long as it has a sign or a direction it's correct)

5
+5 units or 5 units to the right

When the stimulus voltage is increased, _______. When the stimulus voltage is increased, _______. sodium permeability into the cell decreases sodium permeability into the cell increases to overcome the potassium exiting a greater-than-threshold depolarization results a greater-than-threshold depolarization results and sodium permeability into the cell increases to overcome the potassium exiting.

Answers

Answer:

a greater-than-threshold depolarization results and sodium permeability into the cell increases to overcome the potassium exiting.

Explanation:

The occurrence of action potential requires the existence of active voltage-dependent channels to open and close in response to the membrane depolarization.  

When depolarization reaches and supers the threshold point, voltage-dependent Na+ channels open and the ion gets into the cell. The entrance of Na+ decreases the electric charge difference between the cellular interior and exterior. Membrane depolarizes and produces the action potential that tends to reach a potential equilibrium for Na+ = +60mV. The higher the Na+ input is, the greater is the depolarization and the greater is the Na+ permeability.

Once Na+ channels are closed, voltage-dependent K+ channels open, increasing the membrane permeability to the ion, letting K+ get out of the cell, following the electrochemical gradient.  

The closure of Na+ channels and opening of K+ channels are responsible for membrane repolarization.

what type of limiting factor affects a large population more than it affects a small population?

Answers

Answer:

density dependent limiting factor

Explanation:

How much has the rate of surface temperature been in the last 50 years?​

Answers

Answer:

The global average surface temperature rose to  0.6 to 0.9 degrees Celsius ((1.1 to 1.6° F)) between 1906 and 2005, and the rate of temperature increase has nearly doubled in the last 50 years!

Multiple Choice
Re-growing a forest will:

cause desertification in surrounding areas due to the trees' high water demands,

increase water run-off.
lead to eutrophication of nearby lakes,

reduce water run-off.

Answers

Answer: Reduce water runoff

Based on the article "Will the real atomic model please stand up?," why did J.J. Thomson experiment with cathode ray tubes?​

Answers

Answer:

To determine that electric beams in cathode ray tubes were actually made of particles

Explanation:

I hope this is correct, if it isn't then feel free to let me know and I will correct it. I'm sorry in advance if it is incorrect.

A population of tree frogs lives in an area that has many types of plants and trees. The skin of most of the frogs is gray, which blends in better with the bark of trees than with the leaves of plants. Some of the frogs have skin that is greener in color, which blends in better with grasses and leaves. Snakes and birds are predators of the frog. Humans have come to the area and are beginning to cut down the trees. Describe the probability of survival for the three frogs of each genetic variation of skin colour if most of the trees are cut down. Use evidence in the paragraph to support your answer.

Answers

Answer:

with the normal natural predators their chances of survival are high but when humans step in entire forests can be wiped out which will endanger every species of frog

If most trees are cut down, grey individuals will not survive because they will be more exposed to predation. Green frogs will show a greater survival rate. Directional selection is favoring the green phenotype and its genotype.

What is directional selection?

Directional selection is one of the different types of natural selection.

It increases the proportion of individuals with an extreme phenotypic trait.

It causes a decrease in the number of individuals expressing intermediate phenotype, and the other extreme phenotype.

This selection presents more frequently in those cases in which interactions between living organisms and the environment modify in the same direction.

In the exposed example, there is a natural environmental pressure: predation.  Frogs need to camouflage to avoid being seen by birds and snakes.

Most frogs are grey. They camouflage with the bark of treesSome other frogs are green. They camouflage with the grass and leaves.

The curve in a graph frequency vs phenotype shows a higher frequency of gray individuals.

When humans cut down the trees, they are applying another pressure to the population.

Since humans remove trees, grey frogs remain without a substrate in which to camouflage. They are now exposed to predation.

Birds and snakes can detect the gray frogs better and prey on them.

The grey phenotype and its genotype are affecting the animals' fitness. Grey frogs do not get to survive. So natural selection does not favor it.  

Natural selection tends to benefit the green phenotype, which is now the one that increases the frogs' fitness. Green animals are not seen by predators, so they get to survive.  

The curve in a graph frequency vs phenotype now shows a higher frequency of green individuals and a sharp decrease of grey frogs.

If more trees are cut down, grey individuals will not survive. However, green frogs will show a greater survival rate.

Directional selection is favoring the green phenotype and its genotype.

You will learn more about directional selection at

brainly.com/question/9761638

brainly.com/question/10519034

Which product forms from the reaction between nitrogen (N)
(CI)?
A. NCI
B. NCI
C. N2CI
O D. N2C1

Answers

Answer:

None of the above

Explanation:

Because as N has the valence of 3 when it reacts with Cl of 1 as valence they will form NCl3

Answer:

The product of the reaction between nitrogen (N) and (CL) is nitrogen trichloride (NCl3)

Explanation:

Although by seeing the question's answer choices, I think it was an error to detect the question (image) by Brainly as 2 of the answers is written the same.

However, when nitrogen gas reacts with chlorine gas, the product is gaseous nitrogen trichloride (NCL3), I guess 1 of your answer must be NCL3.

Besides the outside layer of the cell, where else is the phospholipid
bilayer found?

Answers

Answer: The phospholipid bilayer can also be found in organelles that have a membrane such as the nucleus, mitochondria, chloroplasts etc.

Reactions occur within the sun to change nuclear energy into electromagnetic energy. This is just one example of…

Answers

Answer:

Un ejemplo de reacciones de fusión son las que tienen lugar en el sol, en las que se produce la fusión de núcleos de hidrógeno para formar helio, liberando en el proceso una gran cantidad de energía en forma de radiación electromagnética, que alcanza la superficie terrestre y que percibimos como luz y calor.

Explanation:

primero:atiende a las clases de tu profesor

segundo:no seas vago

nada mas

name the gland that produces the hormone that stimulates growth

A. pituitary gland

B. thyroid

C. adrenal glands

D. pancreas​

Answers

Answer:

a ........Pituitary gland

Which of the two growth models, exponential or logistic, would you say that the human population portrays? Explain your answer.​

Answers

Answer:

The human population portrays an exponential model

Explanation:

The human population has grown very fast in the past 100 years after the addition of modern technology and easier and safer work people die less frequently hence more are born and there are more people to reproduce with each other and so on and so on

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