Answer:
Work
Explanation:
Work can be referred to as the application of a force (F) over a distance (d). In other words, WORK is done when an applied force causes a body to move. Hence, work is a product of the force and the displacement in the direction of the force i.e. W = F × d
In this case, a desk is PULLED along the floor in your classroom, this best indicates WORK because a force (pull) is applied on the desk causing it to move over a distance in the direction of the pull.
Gas exchange involves the transport of two respiratory gases, oxygen and carbon dioxide. Review how each gas is transported between the atmosphere and the cells of your body by completing this exercise.1. required for cellular respiration
2. net diffusion from alveoli to lung capillaries3. sometimes transported as bicarbonate
4. net diffusion from body tissues to blood
5. net diffusion from lung capillaries to alveoli
6. waste product of cellular respiration7. enters alveoli during inhalation
8. transported by hemoglobinA. Oxygen onlyB. Carbon Dioxide OnlyC. Both Oxygen and carbon dioxide
Answer:
When we breathe, we inhale oxygen and we exhale carbon dioxide.
Explanation:
1. For the cellular respiration, the body cells are provided with oxygen during gas exchange in respiration.
2. Oxygen gas diffuses from alveoli to the capillaries in our lungs.
3. Carbon dioxide is always transported in plasma or bounded to the hemoglobin or in some form of bicarbonate.
4. Carbon dioxide gas diffuses from our body tissues to the blood.
5. In our lungs, carbon dioxide gas diffuses from capillaries in to alveoli. Carbon dioxide leaves the body when we exhale.
6. During cellular respiration, we give give out and removes carbon dioxide from our body which is a waste product.
7. When we inhale, both oxygen and carbon dioxide gases enters the alveoli,
8. All the oxygen present in blood is bounded by hemoglobin and it is carried to all the body tissues and body and diffuses from our blood to our body tissues.
Many tropical ferns can live on other plants without withdrawing nutrients from them. These ferns are said to be:________. a. Epiphytes b. Bryophytes c. Gametophytes d. Saprophytes
Many tropical ferns can live on other plants without withdrawing nutrients from them, and these ferns are said to be epiphytes that are present in Option a as the tropical ferns have many ornamental values, ecological values, etc.
What is the significance of the ferns?Ferns have many symbolic meanings, such as: tropical ferns are popular for their ornamental value, they play a role in regulating the climate by absorbing carbon dioxide and releasing oxygen, thus regulating the climate, they have been used for medicinal purposes, such as curing inflammation, etc.
Hence, many tropical ferns can live on other plants without withdrawing nutrients from them, and these ferns are said to be epiphytes that are present in Option A as the tropical ferns have many ornamental values, ecological values, etc.
Learn more about the ferns here.
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James wants to know which brand of shoe will help him run faster. He thinks the more expensive shoe should be the one that helps him run faster. He tries three different types of running shoes. He runs one lap on the track with pair of shoes ( shoe A) and times how long it takes. He rests for 15 minutes. Then, he tries on another of shoes (shoe B) and runs a lap around the track, while timing how long it takes. He rests for 15 minutes before repeating the lap with the last brand of shoes (shoe C). Which type of investigation did he plete ?
Answer: shoe c
Explanation: shoe c he ran 3 laps in total
List at least four factors that
determine the type of vegetation
that occurs in a terrestrial
biome.
Pleaseeee help
Answer:
Differences in temperature or precipitation determine the types of plants that grow in a given area (Figure 1). Generally speaking, height, density, and species diversity decreases from warm, wet climates to cool, dry climates. Raunkiaer (1934) classified plant life forms based on traits that varied with climate.
Explanation:
What is the measure of the average kinetic energy of the particles in a material known as?
Answer:
Temperature
Explanation:
Answer:
Tempature
Explanation:
10. In multicellular organisms some cells need to be large because of the
functions they perform (i.e .nerve cells, muscle cells). What shape would
be most desirable for these larger cell ? Explaining why in a single word will
not give you credit. *
Answer:
En mi opinión la forma es la ovalada. Es la forma donde se mantiene mas fácilmente la integridad y reproducción de la célula.
Explanation:
The part of Earth that is liquid water is called the
Answer:
Hydrosphere
Explanation:
The wording is quite confusing but if you are talking about the 'spheres' of earth's bio-systems, then the answer should be: The part of Earth that is liquid water is called the Hydrosphere
Which planet(s) in the solar system has/have retrograde orbits around the Sun?
Answer:
As viewed from a position in space north of the solar system (from some great distance above the Earth's North Pole), all the major planets revolve counterclockwise around the Sun, and all but Venus and Uranus rotate counterclockwise on their own axes; these two, therefore, have retrograde rotation.
Explanation:
got it from google hope it helps
Answer Choices:
O Earth, Mars, and Saturn
● Venus and Uranus
O Uranus
O Jupiter
Explanation:
Venus and Uranus rotate clockwise when viewed from the north pole of the sun, while the sun spins counterclockwise. This difference in the rotational and orbital directions is defined as retrograde motion.
Which molecules are connected by hydrogen bonds?
Answer:
water molecules
Explanation:
7. What is an antipode?
Answer:
The direct opposite of something (ex: place, location, etc.)
Explanation:
My dictionary told me.
Explain 2 reasons of why burning down a forest increases the carbon dioxide in the air. NEED TO Know ASAP!
Explanation:
The surplus carbon is stored in the plant, helping it to grow. however when trees are cut down and burned or allowed to rot, their stored carbon is released into the air as carbon dioxide .
Answer: because the lesser trees the more carbon dioxide there will be plus your burning them down which just polluted it even more because the fire is releasing a lot of carbon dioxide
Explanation:
What is another name for the ocean floor
Answer:
abyssal plain
PLEASE HELP!! WILL MARK BRAINLIST!!!!!!
Two factors that affect human sleep patterns are the time of day and level of melatonin, a chemical found in one's body. For example, as the Sun goes down at night, the body knows it is time to go to sleep. Similarly, when a person's level of melatonin changes, they can become alert or sleepy. Using this information, how could these stimuli be described?
A. Hours of sunlight per day and melatonin levels are both Internal stimuli.
B. Hours of sunlight per day and melatonin levels are both external stimull.
C. Hours of sunlight per day is an external stimulus, while the level of melatonin in a person is an internal stimulus.
D. Hours of sunlight per day is an internal stimulus, while the level of melatonin in a person is an external stimulus.
E. Hours of sunlight per day and melatonin levels are both internal and external stimuli.
Answer:
C. Hours of sunlight per day is an external stimulus, while the level of melatonin in a person is an internal stimulus.
Explanation:
Melatonin is a hormone therefore internal. Sunlight is outside of the body therefore external
-
Which type of cell division is shown in the diagram above?
meiosis because it results in haploid cells
meiosis because it involves one parent cell
o
mitosis because the daughter cells are identical
mitosis because the daughter cells are not identical
Answer:
:^6⁶⁶
Explanation:
Answer:
There is no diagram
Explanation:
plss anyone wanna Help?
Answer:
M is the answer
Explanation:
It is a fact that cells come from preexisting cells.
Why are surface antigens on sperm cells not recognized as “self,” and why do they require a blood-testis barrier to prevent antibody formation?
Answer: Sperm cells are recognised as foreign cells by the immune system and requires blood testis barrier to prevent antibody formation.
Explanation:
Shortly after birth, the immune system of an individual starts to recognize the surface antigens of its body cells as 'self' and avoids forming an antibody against it. Spermatozoa (sperm cells) are formed at puberty, between the age of 10 and 14. Hence, the body immune system will recognise the antigen on the sperm cells as 'non-self' and stimulate antibodies against it. This is prevented by the blood testis barrier.
The blood testis barrier which are formed from the Sertoli cells at the seminiferous tubules helps in the isolation of the sperm cells and protects it from immune surveillance. This barrier also prevents sperm cells from coming in contact with blood.
Sperm cells formed during puberty hence immune system recognize them as non-self. Immune attack is prevented by the blood-testis barrier.
Blood-testis barrier:
It is the barrier that is made from the Sertoli cells in the seminiferous tubule. This helps to isolate the sperm cells from the immune surveillance. This also protects sperm cells to come in contact with blood.
Sperm cells formed during puberty hence immune system recognize them as 'non-self'.
Therefore, Sperm cells formed during puberty hence immune system recognize them as non-self. Immune attack is prevented by the blood-testis barrier.
To know more about the blood-testis barrier,
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describe what happens final stage of cell devision
Answer:
Cytokinesis takes place.
Explanation:
Cytokinesis is when cytoplasmic separation of cells at the end of mitosis or meiosis, which results in division into two daughter cells.
HELP ME ASAP!!!!
Select the correct answer.
What are ectothermic species?
A.
species that can generate heat from their internal processes
B.
species that live in cold climates
O c. species that derive heat from the environment
D.
species that live in the ocean
Answer:
A.........................
Answer:
Your answer is C). The prefix "ecto-" means outer or outside, meaning an ectothermic species gathers heat from outside their bodies.
What is an exmaple of a chemical reaction?
Answer:
Iron and oxygen combining to make rust
Explanation:
A chemical reaction happens when one or more chemicals are changed into one or more other chemicals. Examples: iron and oxygen combining to make rust. vinegar and baking soda combining to make sodium acetate, carbon dioxide and water.
An acentric fragment is one result of crossing-over between a normal chromosome and a chromosome that has undergone what kind of mutation?
Answer:
paracentric inversion
Explanation:
A paracentric inversion happens as a result of a portion of one chromosome , or a packet of genetic information, which is flipped such that there are changes in the order of genetic information. Every of the chromosome has a part that is near the middle which is referred to as a centromere. Paracentric inversions do not include the involvement of the centromere of a chromosome.
Which soil would most likely be found in the Arctic?
Answer:
tundra
Explanation:
because I've done this question
Answer:
tundra soil is also classified as B Gelisols
Explanation:
Draw A Punnett Square For Qq and QQ . Explain What The Punnett Square Represents.
Answer:
QQ, QQ, Qq, Qq
Explanation:
Set it up and then solve.
Altering the DNA of an organism in order to get the traits we want is
called
A.Human Genome
B.Genetic Engineering
C.Inbreeding
What acronym means "as needed"?
Answer:
PRN
Explanation:
Answer:
PRN
Using PRN or “As Needed” Medicines Safely.
Brainliest?
CAN SOMEONE HELP ME WITH THE PICTURE ABOVE
Answer:
The answer is C, Species A is a predator and species B is its prey.
Explanation:
I found a random PDF earlier that has all the answers to like a hundred ecology questions and this was one of them.
Which of the following choices includes two structures that are found in plant cells, but not in animal cells?
chloroplasts, ribosomes
A.lysosomes, mitochondria
B.cell wall, nucleus
C. cell wall. large central vacuole help pls
Answer:
C.
Explanation:
The smallest unit of life is a
_____, and all organisms have at least one.
Answer:
cell
Explanation:
Answer:
cell
Explanation:
That is the smallest unit of life, and every living thing has at least one cell, such as unicellular living things.
What happens when a cell reaches the Hayflick limit ? Why does this have to happen for the health of the cell?
Answer:
The Hay-flick Limit is a concept that helps to explain the mechanisms behind cellular aging. The concept states that a normal human cell can only replicate and divide forty to sixty times before it cannot divide anymore, and will break down by programmed cell death or apoptosis.
What is dehulled rice grain called?
Answer:
Brown rice.
Explanation:
It is known as brown rice because it is covered in a brownish pericarp
What is the term used to describe the energy of moving particles
Answer:
Kinetic energy
Explanation:
Because the particles are moving, they have kinetic energy. The faster they move, the more kinetic energy they have. When an object is hot, the particles move faster.
