Question 21 (5 points)
Which of the following terms describes a collection of hollow cells that implants on
the uterus wall after fertilization, but is not yet differentiated (in other words, all cells
are the same type of cell still)?
Fetus
Haploid
Mitosis
Blastocyst

Answers

Answer 1

Answer:

The answer is option D.

Blastocyst

Hope this helps

Answer 2

Answer:

Blastocyst

Explanation:

Once an egg is fertilized by a sperm, it begins to divide by mitosis into a 2, 4, and then 8 celled structure. Eventually, this large collection of cells keeps dividing and becomes a hallow collection of undifferentiated cells called a blastocyst. The blastocyst will implant on the wall of the uterus where it will begin to grow and develop during pregnancy into a fetus.


Related Questions

Which statement summarizes a change that occurs during photosynthesis?

Answers

Answer:

It converts light energy to chemical energy.

Explanation:

Its absorbing sunlight and changing in to chemical energy for the plants nutrients.

During photosynthesis, light energy will be changed into chemical energy.

What is photosynthesis?

Photosynthesis was a process used mostly by plants as well as other creatures to transform sunlight into chemical energy which, via cellular respiration, might subsequently be produced to fuel the organism's functions.

What is chemical energy?

Chemical energy was the energy that would be generated while chemical substances engage in a chemical reaction but also change into some other substances.

Therefore, during photosynthesis, light energy will be changed into chemical energy.

To know more about photosynthesis and chemical energy.

https://brainly.com/question/1388366

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Antimicrobial peptides can do all of the following except:_________A) regulate body temperature.B) target intracellular components.C) insert themselves into target cell membranes.D) disrupt plasma membrane and/or cell wall.E) stimulate leukocytes.

Answers

Answer:

Option A

Explanation:

Antimicrobial peptides cannot regulate body temperature. They can do all of the rest.

=> target intra cellular components.

=> insert themselves into target cell membranes.

=> disrupt plasma membrane and/or cell wall.

=> stimulate leukocytes.

what is cellular affinity in biology?

Answers

Answer:

affinity. Attraction between particles. Biology: A measure of the attraction of one biological molecule toward another molecule, either to modify it, destroy it, or form a compound with it. Examples are enzymes and their substrates, or antibodies and their antigens.

Which statement best describes monsoons?
They force cool, moist air from oceans to rise.
They are winds that blow in the opposite direction of a normal wind.
They bring heavy rain in the winter and in the summer.
They influence precipitation as wind moves near a mountain.

Answers

Answer:

The correct answer to the following question will be Option B and C.

Explanation:

Monsoon seems to be a change throughout the course including its predominant hot air flowing from either the south-western oceans of India towards India.The summer monsoon gives a luxurious atmosphere as well as heavy rains to something like the coastline of Asia (south-east), where many monsoon showers of rain undergo their rainy season throughout the winter.

The other choices are not related to the given circumstances. So that Option B & C would be the appropriate choice.

Answer:

Pretty sure its B not sure tho. If its correct, mark as brainliest

Explanation:

A biologist is studying how green sea turtles choose where to lay their eggs. She makes a hypothesis that because this species is related to other sea turtles through common ancestry, they probably all use the same process. This biologist formed her hypothesis using:________

a. A hunch
b. The unifying theory of evolution
c. Experimentation
d. The scientific method
e. Observations of green sea turtles' behavior

Answers

Answer:

Option b

Explanation:

Hypotheses are carried out as proposed explanation made on the basis of limited evidence which serves as a beginning point for further study.

The biologist in this case has a limited evidence with regards to this species which is just only about its ancestry, so her hypothesis was based on the unifying theory of evolution which is the framework within which biologists ask questions about the living world providing predictions with regards to directions about living things.

The correct answer, unequivocally, is (B).

- This is because she used her knowledge that, from an standpoint of evolution, these turtles were related to each other.

DNA damage checkpoints are crucial for preventing cell proliferation when DNA damage has occurred. The role of DNA checkpoint proteins in the cell cycle is closely tied to the roles of DNA repair enzymes, although these proteins perform different functions.1. Which of the following statements is true for DNA checkpoint proteins and not for DNA repair enzymes? a. These proteins remove a single nucleotide of damaged DNA. b. These proteins nick the phosphodiester backbone of the damaged DNA. c. These proteins prevent the cell cycle from progressing if damaged DNA is detected. d. These proteins remove the region of damaged DNA. 2. Which cell cycle phases contain critical DNA damage checkpoints?a. Gob. G1c. G2d. M

Answers

Answer:

1. C. These proteins prevent the cell cycle from progressing if damaged DNA is detected.

2. C. G2

Explanation:

1. All other choices apply uniquely to DNA repair enzymes (i.e. not to DNA checkpoint proteins).

2. Go doesn't contain any critical DNA damage checkpts. because it's not even an official part of the cell cycle; it's simply a phase in which cells are arrested. G1 doesn't contain any critical DNA damage checkpts. because it's before DNA is replicated. G2 is right after S phase when the DNA is replicated; thus, it contains critical DNA damage checkpts.

The diagram below shows the stages of succession in a forest ecosystem. A diagram showing 4 stages of succession in a forest ecosystem. Stage A: A mature forest. A fire occurs, resulting in Stage B, a burnt forest where nothing is growing. Stage C, pioneer plant species grow in the bare ground. More species follow and grow bigger. Stage D: A mature forest with several tree species and younger trees. Which area shows the climax community of secondary succession?

Answers

Answer:

D

Explanation:

just took the test

Answer:

D

Explanation:

Area D shows the climax of secondary succession.

Researchers cross a corn plant that is pure-breeding for the dominant traits colored aleurone (C1), full kernel (Sh), and waxy endosperm (Wx) to a pure-breeding plant wiht the reccessive trains colorless aleurone (c1), shrunken kernal (sh), and starchy (wx). The resulting F1 plants were crossed to pure-breeding colorless, shrunken, starchy plants. Counting the kernals from about 30 eats of corn yields the following data:
Kernel Phenotype Number
Colored, shrunken, starchy 116
Colored, full, starchy 601
Colored, full, waxy 2538
Colored, shrunken, waxy 4
Colorless, shrunken, starchy 2708
Colorless, full, starchy 2
Colorless, full, waxy 113
Colorless, shrunken, waxy 626
6708
A) Why are these data consistent with genetic linkage among the three genes?
B) Perform a chi-square test to determine if these data show significant deviation from the expected phenotype distribution.
C) What is the order of these genes in corn?
D) calculate the recombination fraction between the gene pairs.
E) what is the interference value for this data set?

Answers

D) #recombinant=116+601+4+2+113+625=1462

   #nonrecombinant=2538+2708=5246

  RF=R/(N+R)=1462/6708=0.2

  E) I=1-Q

I-interference

Q-coefficient of coincidence

Q=O2Xo/E2xo(2xo-double crossovers)

O2xo=6

P=(distance from C1 to Sh/100)*(distance from Sh to Wx/100)

=(3.38/100)*(18.28/100)=0.006

E2xo=0.006*6708=40.248

Q=6/40.248=0.15

I=1-0.15=0.85

What are gyres?
1.Large plants that move in circles in the ocean.
2.Large circulating parts of the ocean
3.Large animals in the ocean that move in circles in the ocean.

Answers

Answer:

A gyre is a circular ocean current formed by the Earth's wind patterns and the forces created by the rotation of the planet..

Explanation:

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DNA damage checkpoints are crucial for preventing cell proliferation when DNA damage has occurred. The role of DNA checkpoint proteins in the cell cycle is closely tied to the roles of DNA repair enzymes, although these proteins perform different functions.1. Which of the following statements is true for DNA checkpoint proteins and not for DNA repair enzymes? a. These proteins remove a single nucleotide of damaged DNA. b. These proteins nick the phosphodiester backbone of the damaged DNA. c. These proteins prevent the cell cycle from progressing if damaged DNA is detected. d. These proteins remove the region of damaged DNA. 2. Which cell cycle phases contain critical DNA damage checkpoints?a. Gob. G1c. G2d. M Represent 1/3 and 5/2 on the same number line. Rectangle ABCD is graphed in the coordinate plane. The following are the vertices of the rectangle: A(2, -3), B(4, -3), C(4,5), and D(2,5) What is the perimeter of rectangle ABCD 04Apples cost a and bananas cost b. Which is a correct expression for how 1 pointmuch 4 apples and 5 bananas cost? *4a + 5b4a 5b9ab4 + 5Simplify fully In 1999, more than 100,000 pro-democracy protestors gathered in Tiananmen Square. true False Need help with this question please: Question 15 A party rental company has chairs and tables for rent. The total cost to rent 8 chairs and 3 tables is $38 . The total cost to rent 2 chairs and 5 tables is $35 . What is the cost to rent each chair and each table? Which equation could be used to find the length of the hypotenuse?5 cmB8 cm De acuerdo al calendario ecolgico 2020, escriba cuanto CO2 produce el Ecuador y en un resumen mximo de 7 lneas, determine porque son importante los humedales en la biodiversidad. What was the term used by Churchill in reference to the Soviet Union's rule over Eastern European nations? A the Marshall Plan B Iron Curtain C the Warsaw Pact D NATO Will give brainliest answer An athletics coach states that the distribution of player run times (in seconds) for a 100-meter dash is normally distributed with a mean equal to 13.00 and a standard deviation equal to 0.2 seconds. What percentage of players on the team run the 100-meter dash in 13.36 seconds or faster Mountain Lake Corporation's accounting records show the following at year-end December 31, 2014:Purchase Discounts $7,230 Beginning Inventory $32,660Freight-In 8,730 Ending Inventory 29,170Freight-Out 12,260 Purchase Returns and Allowances 4,190Purchases 164,250 Assuming that Mountain Lake Corporation uses the periodic system, compute the cost of goods purchased and cost of goods sold.1. Cost of goods purchased$=?2. Cost of goods sold$=? Find all pairs $(x,y)$ of real numbers such that $x + y = 10$ and $x^2 + y^2 = 56$. For example, to enter the solutions $(2,4)$ and $(-3,9)$, you would enter "(2,4),(-3,9)" (without the quotation marks). Please answer this correctly What would happen to a satellite if its orbit speed doubled? Mario writes the equation (x+y ) 2 = z 2 +4( 1 2 xy) (x+y)2=z2+4(12xy) to begin a proof of the Pythagorean theorem. Use the drop-down menus to explain why this is a true equation. What is a result of the nation's inactivity?A.It has prevented death from cardiovascular disease.B.It has caused the percentage of overweight young people to decrease.C.It has contributed to the increasing number of cases of cancer and heart disease.D.It has helped to improve the nation's healthcare budget. Where does the doctor work? What does he do ? Is the profession of a doctor important? Why ? How does a doctor face corona? What are the doctor's tools? PLEASE HELP!!!! Find the common difference