A blastocyst is a group of cells that forms after a human egg is fertilized. The
blastocyst consists of two types of cells. Some of these cells will become the
placenta. What do the other cells develop into?
A. All of the cells of a developing fetus
O
B. The skeletal and muscular systems of the fetus
a
C. The umbilical cord linking the fetus and mother
O
D. The nervous and endocrine systems of the fetus
SUBV
Answers
Answer:
A. All of the cells of a developing fetus
Explanation:
As stated in the question, the blastocyst is a collection of cells formed as a result of several divisions of the ZYGOTE. This means that the zygote at some point becomes a blastocyst. The blastocyst itself is a collection of cells that make up the inner and outer layer. The outer layer is called trophectoderm, which gives rise to the trophoblast that later develops into the PLACENTA that nourishes the embryo.
The cells that make up the inner layer forms the embryo. These cells are stem cells that will eventually differentiate into all the cell types that makes up an embryo.
Answer:
A
Explanation:
Related Questions
Scientists who search for fossils often use the term transitional fossil to describe some of their finds. An example of a transitional fossil is Dimetrodon, which lived 280-265 million years ago. Dimetrodon had a lizard-like appearance but had a sail-like structure sticking out from its back that allowed it to regulate its body temperature, an ability that is found today in modern warm-blooded mammals. While Dimetrodon swallowed its prey whole like reptiles do, it also had different types of teeth, a trait also common to mammals. Which of these statements best explains how transitional fossils support the theory of evolution?
A. Transitional fossils show traits common to ancestors as well as descendants.
B. Transitional fossils show how the organisms' characteristics remain the same over time.
C. Transitional fossils show how individual organisms can change their characteristics during their lifetimes.
D. Transitional fossils show how populations of past organisms were not able to change their characteristics over time.
Answers
Answer:
A. transitional fossils show traits common to ancestors as well as decendants.
Explanation:
Transitional fossils show traits common to ancestors as well as descendants. Therefore, option A is correct.
What are transitional fossils?Any fossilized remains of a living form that exhibit characteristics shared by both its ancestor group and its descended descendant group are considered transitional fossils. This is crucial in cases where the descendent group's physical anatomy and way of life clearly distinguish them from the ancestor group.
The link between two species of creatures that demonstrates the relationship between the two species is known as a transitional fossil. These are the missing pieces in the chain of species evolution.
Thus, transitional fossils show traits common to ancestors as well as descendants, this is how transitional fossils support the theory of evolution. Therefore, option A is correct.
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State the functions of the skeletal system, including the number and the major bones in the human skeleton.
Answers
The skeletal system serves several important functions in the human body. These functions include:
1. Support: The skeleton provides the structural framework for the body, giving support and shape to the organism.
2. Protection: The skeletal system protects vital organs such as the brain, spinal cord, heart, and lungs. For example, the skull protects the brain, the ribcage protects the heart and lungs, and the vertebrae protect the spinal cord.
3. Movement: Bones act as levers for muscles, enabling body movement. The skeletal system works in conjunction with the muscular system to facilitate motion.
4. Mineral storage: Bones store essential minerals, such as calcium and phosphorus, which are necessary for various body functions.
5. Blood cell production: Red and white blood cells, as well as platelets, are produced in the bone marrow, which is found in some bones.
6. Energy storage: Yellow bone marrow, found in the medullary cavity of long bones, stores energy in the form of fat.
The human skeleton consists of 206 bones in adults. Some of the major bones include:
1. Skull: Comprised of the cranium and facial bones, it protects the brain and supports the structures of the head.
2. Spine (vertebral column): Consists of 33 vertebrae, which protect the spinal cord and support the upper body.
3. Ribcage: Includes 12 pairs of ribs, the sternum, and the thoracic vertebrae, which protect the heart and lungs.
4. Humerus: The long bone in the upper arm, connecting the shoulder to the elbow.
5. Radius and Ulna: The two bones in the forearm, connecting the elbow to the wrist.
6. Femur: The long bone in the thigh, connecting the hip to the knee, and is the longest bone in the body.
7. Tibia and Fibula: The two bones in the lower leg, connecting the knee to the ankle.
8. Pelvis: A basin-shaped structure that supports the spine and organs of the lower abdomen, and connects the spine to the lower limbs.
These are just a few examples of the major bones in the human skeleton.
Answer:
Explanation:skeletal system functions are diffrent of types . In addition to defining our shape and traits as humans, it:
enables movement: Your skeleton helps you stand and move by supporting your weight. Your bodily components are movable thanks to the cooperation of joints, connective tissue, and muscles.
Bone marrow, which makes blood cells, is found in bones. The bone marrow makes RBC AND WBC
supports and shields organs: Your ribs shield your heart and lungs, your backbone shields your spine, and your skull shields your brain.
Mineral storage: Your bones are where your body stores minerals like calcium and vitamin D.
Highly organized systems like living cells should have _____.
a. High energy
b. High entropy
c. Low entropy
d. Low energy
Answers
Lily feels tired and weak in the evenings after work. Before starting her chores, she eats dinner. Which characteristic of life does Lily exhibit?
A.
growth
B.
need for energy
C.
organization
D.
regulation
Answers
Answer:
B: Need for energy
Explanation:
Lily exhibits this characteristic of life because she feels tired and weak in the evenings, meaning that she used all of her energy, and before starting her chores she eats dinner to replenish that lost energy.
Please help me and thank you
Which option describes how genetic testing may be used in the future?
People may choose to have genetic testing done early and receive antibiotic medication to treat possible infections that may happen later in their life.
People may decide to have genetic testing done only when their child gets sick, to see if they passed on an illness to them.
People may decide to have genetic testing done only when they get sick, to see which illness they have.
People may choose to have genetic testing done early and receive preventive gene treatments for disorders that may develop later in their life.
Answers
Answer:
D i think, sorry if i am wrong. it sounds most accurate thought
Explanation:
PLEASE HELP Enzymes that produce energy are called _________ enzymes.
Answers
Answer:
NADH OR ATP I think
Explanation:
Villi are finger-like projections richly supplied with ______. They help in _____ in the small intestine.
Answers
Answer: supplied with blood vessels, i dont know bout the second line
Explanation:
First blank: blood vessels
Second blank: digestion, or something related to taking in nutrients.
Which is capable of housing astronauts while they conduct research?
a rover
a satellite
a space station
a space observatory
Answers
Answer:
space station
Explanation:
My explanation : A space observatory because that’s where all their things are.
Consider the feeback loop that occurs when you pull your hand away from something hot. How does this reflex help to maintain homeostasis?
Answers
Answer:
This reflex helps by not causing the temperature in the part of your body that is touching the hot object to get to hot, which saves you from a very painful burn
Explanation:
Answer:
This reaction protects you from a burning burn by preventing the temperature in the part of your body that is touching the hot object from rising too far.
Explanation:
10 points people, imma give a brainiest to whoever has best answer.
Answers
Answer:
B
Explanation:
i did this before
i think it’s this
What do ALL living things need from their environment?
A sunlight
B energy
C nutrients
D all of the above
Answers
What is the DNA sequence to the following mRNA strand? AUUCGGUACUGUACUAC
Answers
Among us code:
SRCSMF
Answers
Answer:
You say my answer...I think. ALL my answers got deleted. All...60. of. them.
Explanation:
Light Waves and Sound Waves
Record your findings about sound and light waves for each of the following.
• Traveling through air
• Traveling through metal
• Why light travels faster
Answers
Explain the role of blood vessels in homeostasis.
Answers
Answer:
Explanation:
It helps to maintain homeostasis through the release or conservation of warmth. Blood vessels expand and contract when they react to outside organisms, such as bacteria, and to internal hormone and chemical changes. These actions move blood and heat closer to or farther from the skin surface, where heat is lost.
A student is studying a gray pine (conifer/gymnosperms), an apple tree and an avocado tree. After conducting research about them she discovers some similarities and differences between them. What are some of the differences and similarities she probably discovered? (Hints: think about how they reproduce)
Answers
Which type of heat transfer takes place in a vacuum?
Conduction
Convection
Radiation
Thermal
Answers
Answer:
Your answer should be C.) Radiation.
Explanation:
Radiation does not need matter in order to transfer heat. Take for example, The sun heats our planet even through the vacuum of space through radiation.
Answer:
conduction
Explanation:
50 POINTS!
Energy is transferred into the ecosystem when
1.when bacteria absorbs nitrogen from other organisms
2. dead organisms decay and form organic matter
3. rodent prey on invertebrates
4.plants grow from the soil
Answers
Answer:
2
Explanation:
Energy is transferred between organisms in food webs from producers to consumers.
The energy is used by organisms to carry out complex tasks. The vast majority of energy that exists in food webs originates from the sun and is converted (transformed) into chemical energy by the process of photosynthesis in plants.
Answer: between organisms in food webs from producers to consumers.
Explanation:
Please answer this ill give the brain thing but i need a answer QUICK!
Answers
Answer:
He needs oxygen, protein and, glucose. Foods are converted into ATP (adenosine triphosphate) as energy.
Explanation:
Simplify.
((67)4)−2(67)−4
Answers
Answer:
Math Error
Explanation:
((67)4)−2(67)−4 there is no answer it's a MATH ERROR
Answer:
130
Explanation:
BRAINLIEST
While savannas and temperate grasslands are both types of
grasslands and share many characteristics, they also have
some differences. Compare them below by writing each
characteristic in the correct location. You will use each only
once.
• home to many types of grazers
• experience all seasons of weather
• home to bison
• home to the African elephant
• example: tallgrass prairies of North America
• example: Serengeti in Tanzania
• also known as tropical grasslands
• few trees due to little rainfall
1)
(Savannas)
(Both Types of
Grasslands)
(Temperate
Grasslands)
Answers
Answer:
S - Savannas are typically found in tropical or subtropical regions.
S - Savannas tend to have more trees and shrubs.
S - Savanna's climate is drier than that of a grassland.
G - Grasslands are found in temperature regions.
G - Temperature Grasslands are mainly devoid of trees, receive less rainfall than Savannas & endure broader temperature extremes.
G - Grasslands make up 25 percent of the Earth's land surface and dominate in regions with limited rainfall, which prevents forest growth. This results from nearby mountain ranges that cause rain shadows over adjacent open-range lands.
B - Both represent the world's richest and most diverse ecosystems. They both provide a home for a quarter of the world's population and a habitat for thousands of plants and animals.
B - Many species gather in vast numbers, graze on the varied grasses, and can be found nowhere else on Earth. The coexistence between wildlife and grasses is key to healthy ecosystems. Animal migrations regenerate the landscapes, by controlling pests, dispersing seeds, and trampling invasive species. Through this partnership, grasslands and savannahs generate vital benefits for both people and nature.
B - Ecosystems such as these two in specific are essential for climate mitigation – they store carbon, locking it deep in the soil and extensive root systems. They are the source of or support many of the world’s biggest rivers and wetlands, ensure food security, support livelihoods, and are embedded in the cultural identity of millions of people.
(Also, A savanna or savannah is a mixed woodland-grassland<---similarity)
Explanation: Just research. I decided to state 3 characteristics for both The Savanna and The Grasslands, and then 3 for "B" (both).
(Both Types of Grasslands) experience all seasons of weather, few trees due to little rainfall
(Temperate Grasslands) home to bison, example: tallgrass prairies of North America
What was the first planet discovered obiting a star?
Answers
Answer: 51 Pegas b
Explanation:
Answer:
51 Pegasi b: 1st planet found orbiting a sunlike star
Explanation:
Astronomers officially designated the new planet as 51 Pegasi b, in accordance with the nomenclature already decided upon for extrasolar planets. The b means that this planet was the first discovered orbiting its parent star.
A scientist genetically engineered a grain cereal. The genetically engineered variety can produce its own vitamins and is drought resistant. What is the likely impact of growing such a cereal crop on the society?
May trigger an adverse climate change
May worsen the water crisis around the world
Would be beneficial for the malnourished population
Would increase the shortage of food around the world
Answers
A boy has two slides to choose from at the park. One slide has a rough surface and the other one has a smooth surface. Which slide will he slide down faster?
He will travel faster on the rough slide because there is less friction.
He will travel faster on the rough slide because there is more friction.
He will travel faster on the smooth slide because there is less friction.
He will travel faster on the smooth slide because there is more friction.
Answers
He will travel faster on the smooth slide because there is less friction. The amount of friction between the slide and the boy's body affects how quickly he can slide down. The rough surface will create more friction, slowing down the boy's speed. The smooth surface will create less friction, allowing the boy to slide down faster.
Answer:
Option d
Explanation:
He will travel faster on the smooth slide because there is more friction.
What is the energy level of a liquid?
Answers
Answer:
The energy level of a liquid refers to the amount of energy that is stored within the molecules of the liquid. This energy can take various forms, including kinetic energy (the energy of motion), potential energy (the energy of position), and thermal energy (the energy of heat).
please help, I will give you brainliest!!!
1.) Which term refers to the movement of materials through a cell membrane without using the cell’s energy?
A concentration
B passive transport
C active transport
D collision
2.) Which term refers to the diffusion of water molecules through a selectively permeable membrane?
A active transport
B engulfing
C passive transport
D osmosis
3.) This one is on a screenshot
4.) Diffusion occurs due to differences in _____.
D temperature
B concentration
C size
D collisions
5.) Which are types of passive transport?
A diffusion and engulfing
B engulfing and transport proteins
C transport proteins and osmosis
D osmosis and diffusion
6.) What is a function of water in a cell?
A helping the cell move and grow
B producing lipids and carbohydrates
C assisting in the production of proteins
D preventing rapid temperature changes
7.) Which describes DNA and RNA?
A proteins
B nucleic acids
C lipids
D carbohydrates
8.) Sugar molecules can combine with one another to form large molecules called _____.
A enzymes
B proteins
C lipids
D starches
9.) Active transport requires a cell to use _____.
A diffusion
B its own energy
C collisions
D osmosis
10.) The cell membrane and water are both involved in _____.
A the movement of materials into and out of the cell
B preventing chemical reactions from taking place
C directing the cell’s activities and functions
D making and packaging proteins for the cell
11.) Which describes engulfing?
A active transport in which the cell membrane forms a new vacuole
B passive transport in which the cell membrane surrounds a particle
C active transport in which proteins move molecules in and out of the cell
D passive transport in which water moves through the cell membrane
12.) Which describes starches and sugars?
A proteins
B enzymes
C carbohydrates
D lipids
13.) Which is involved in engulfing?
A endoplasmic reticulum
B cell membrane
C Golgi bodies
D transport proteins
14.) Which term refers to the movement of molecules from an area of higher concentration to an area of lower concentration?
A diffusion
B concentration
C collision
D active transport
Which describes a selectively permeable membrane?
A allows only certain substances to pass through
B permits all substances to pass through in small quantities
C permits only certain substances to leave but all to enter
D allows large quantities of every substance to pass through
Thanks, if you did help me
Answers
Answer:
1) Passive transport
4) Concentration
5) Osmosis and diffusion
9) It's own energy
14) Diffusion
15) Allows only certain substances to pass through
I'm not sure about the others
2) Osmosis
3)
4) concentration
5) D
6) C
7) B
please help!!!!
options:
W - between 2.5 and 3.5/greater than 3.5/less than 2.5
X - between 2.5 and 3.5/between 3.5 and 6.5/greater than 6.5
Y - between 2.5 and 3.5/less than 2.5/greater than 6.5
Next Sandra tests the hardness of each mineral by scratching it with different materials as shown in the chart. The values in the chart are based on the Mohs Scale of hardness, which ranks the hardness of minerals on a scale of 1 to 10. The harder the mineral is, the higher its rating will be. If the material is harder than the mineral, it will scratch the mineral. For example, according to this scale, if a mineral is unable to be scratched by a steel nail, then the mineral has a hardness greater than 6.5.
TELL ME THE ANSWER
Answers
W between 2.5 and 3.5/greater than 3.5/ less than 2.5
Hope it helps
List 3 negative impacts does plastic pollution have on the ocean?
Answers
Ingestion
And suffocation
Answer:
Negative physical impact on marine life, chemical impact on the water, and transport of native species.
Explanation:
Negative physical impact on marine life:
Plastic can be dangerous to creatures living in the ocean. Marine animals can fatally swallow plastic, become entangled in it, and even become physically impaired for the rest of their life.
Chemical impact on the water:
Plastics carry chemicals such as PCBs and DDT that can invade the water and cause harm to marine ecosystems.
Transport of native species:
Plastic can carry organisms from one part of the ocean to a relatively remote area. By introducing new organisms to an ecosystem, the flow can be disrupted and result in major consequences.
i need help reasonably defining 10 parts of a cell.
parts of the cell: cell membrane, nucleus, cytoplasm, endoplasmic reticulum, ribosomes, golgi bodies (or golgi apparatus), lysosomes, cytoskeleton, mitochondria, and vacuoles
Answers
Muscle is soft tissue. Many elastic fibers make up the muscles. The body has over 600 muscles. Different muscle types have different tasks. Some muscles help you run, jump, and perform delicate tasks like threading a needle. Other muscles enable breathing and food digestion. Your heart is a hard working muscle that beats thousands of times a day. There are three types of muscle tissue in the body. They are:
Skeleton: As part of the musculoskeletal system, these muscles work in concert with bones, tendons and ligaments. Tendons attach skeletal muscles throughout the body to bones. Together they support the weight of the body and aid movement.
You control these voluntary muscles. Some muscle fibers contract rapidly, expending short bursts of energy (fast-twitch). Others move slowly like this: B. Back muscles that help with posture.
Heart: These muscles line the walls of the heart. They help the heart pump blood through the cardiovascular system. They do not control the heart muscle. Your heart tells them when to contract.
Smooth: These muscles line organs such as the bladder, stomach, and intestines. Smooth muscle plays an important role in many body systems, including the female reproductive system, the male reproductive system, the urinary system, and the respiratory system.
These muscle types work without you thinking. They perform important tasks such as moving waste products through the intestines and helping the lungs expand when breathing.
The components of the cell are as follows:
Cell membraneCell wallCell organelles
Nucleolus
Nuclear membrane
Endoplasmic reticulum
Golgi Bodies
Ribosome
Mitochondria
Lysosomes
Chloroplast
Vacuoles
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What is psyllium pease help me
Answers
Psyllium is a soluble fiber used primarily as a gentle bulk-forming laxative in products such as Metamucil. It comes from a shrub-like herb called Plantago ovata that grows worldwide but is most common in India
Answer:
a leafy-stemmed Eurasian plantain
Explanation: