Answer:
a)Difference in physical state observed:
The difference between the two carrots is that the carrot in the plain water appears bigger or slightly swollen while the carrot in the salt water appears smaller and has shrank in length and slightly in width.
b)Process involved that has caused the changes:
The process that has taken place is osmosis.
c)Why has the process occured:
The process occurs due to the semi-permeable membrane of the cells of carrots that allow water either in or out of the cells.
In the plain water, the process that takes place is endosmosis where the cells of the carrot draw in water and hence the carrot increases in mass. The carrot in the salt water, on the other hand, experiences exosmosis, where water is drawn from the carrot's cells and the carrot becomes dehydrated and shrinks in length and width.
d) Beaker 1 : Water
Beaker 2 : Sugar Solution
e) example of endosmosis is absorption of capillary water from the soil by the root.
another example of endosmosis is is entrance of water in the xylem vessel from the soil by the root.
which best describes the scinetific proces?
cell theory establishes which of the following conclusions about cells?
A) all cells have the same size and shape
B) all cells form by free-cell formation
C) all cells are produced by other living cells
D) all cells have a cell wall
Answer:
C) all cells are produced by other living cells
Explanation:
Cell theory establishes the conclusion that " all cells are produced by other living cells". According to cell theory all the living cells are generated from pre- existing cells. Thus, option C is correct.
What is cell theory?Cell theory is a scientific theory given in nineteenth century and according to cell theory " cell is the structural and fundamental unit of life" and " every living cell is made up of pre existing cell".
The cells in multicellular organisms function differently from those in single-celled organism. A unicellular depends upon only one cell for all functions occurred in body. On the other hand a multicellular organism has cells specialized to perform several body functions that combinedly support the organism.
The main difference between unicellular organisms and multicellular organisms is that unicellular organism is unspecialized it means all the body function depends upon only on the single cell and in multicellular organism there is specific cells for specific purposes.
Multicellular and unicellular organisms are perform almost all the life running activities and processes such as respiration, reproduction digestion, breathing, and metabolism.
In unicellular organism division of levour is at the orgneele level on the other hand in multicellular the division of lavour at cellular, tissue, organs and organ system level.
Unicellular organism has simple body organization and multicellular organism have complex body organism.
Therefore,Cell theory establishes the conclusion that " all cells are produced by other living cells". According to cell theory all the living cells are generated from pre- existing cells. Thus, option C is correct.
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Which organisms are heterotrophs?
Answer:
HUMAN BEINGS AND OTHER ANIMALS EXCEPT PLANTS ARE HETEROTROPHS
Explanation:
HETEROTROPHS ARE ORGANISMS THAT CAN NOT MAKE THEIR OWN FOOD
E.G Human beings and other animals
Answer: Herbivores, omnivores, and carnivores are heterotrophs because they eat other organisms to get proteins and energy.
Explanation:
Our current understanding of evolution is called a theory because itches been
Answer:
Supported repeatedly as new discoveries have been made.
Explanation:
Which type of natural selection is a work here
Answer:
The correct answer is: C) stabilizing selection
Explanation:
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Temperate deciduous trees lose their leaves in Fall. Explain why trees in temperate rainforest and tropical rainforest don’t lose their leaves. PLS HELP ME!!!!!! O_O
Answer: Many are DECIDUOUS TREES that lose their leaves in fall, but the broad-leaved trees of a tropical rain forest are evergreen. The mass of leaves of adjacent trees form a CANOPY.
Explanation: I hope this helps, I am stuck on the same question too.
An amoeba consists of a single cell and has a nucleus. What is an amoeba
called?
Answer:
Eukaryote
Explanation:
Eukaryotes have a defined nucleus and amoeba is a single celled eukaryotic organism.
Researchers discovered that the level of lead poisoning can be determined by analysis of a blood sample. This is possible because of the interaction of—
A.
the muscular system and the immune system.
B.
the digestive system and the cardiovascular system.
C.
the skeletal system and the excretory system.
D.
the endocrine system and the reproductive system.
Answer:
Ok for me its B
Explanation:
Do you think killing lionfish is ethical? Why or why not?
Answer:
Well I don't like killing things but lionfish are technically taking over the ocean since they are traveling everywhere and a hurricane caused six fish from an aquarium to accidentally get swept out into the Atlantic Ocean. Female lionfish produce thousands of eggs at a time, which has allowed their population to increase rapidly in the Atlantic. There’s no firm estimate of the number of lionfish in the Atlantic Ocean right now. However, it might be as many as 375 to 1,000 lionfish per acre of the ocean. These fish have predators such as sharks and scorpionfish in their natural habitat. However, they don’t have many natural predators in the Atlantic Ocean, where the typical predatory animals don’t seem to recognize lionfish as food, so it probably is ethical.
Which are products of nitrogen fixation?
O A. Phosphorus, nitrates, nodules
O B. Oxygen, carbon, water
O C. Nodules, roots, fertilizer
O D. Ammonia, nitrates, nitrites
Answer:
D. Ammonia, nitrates, nitrites
Explanation:
option d is correct answer
he wavy movement that pushes the food into next organ of digestive system is called
Answer: peristalsis
Explanation:it's the contraction and relaxation of muscles as the bolus moves down the oesophagus
To which skeletal system do the carpals belong?
spongy skeleton
compact skeleton
axial skeleton
appendicular skeleton
Answer:
Appendicular skeleton
Explanation:
The carpals are bones that make up part of the hand, so the Appendicular system would be an appropriate answer. The Appendicular system got its name because it is the appendages of the axial skeleton. Your hand (as well as your arms , legs, pelvic girdle, feet,etc.) is considered your appendage so it would make sense for the bones that allow your wrist to move and rotate are considered it as well.
Answer:
appendicular skeleton
Explanation:
The carpals are bones that make up part of the hand.The appendicular skeleton is the portion of the skeleton of vertebrates consisting of the bones that support the appendages. The appendicular skeleton includes the skeletal elements within the limbs, as well as supporting shoulder girdle pectoral and pelvic girdle.
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Why are men today always seen as being toxic? Even though genetics clearly made men and women different and their roles in society different as well
Answer:
It's perception and genetics.
Explanation:
Gene dominance, a man whose father is very toxic and his mother calm, could produce either toxic or calm Gene(here dominance plays the bigger role). note some characters such as (toxic) can be learned;factors arising from society, upbringing and self-realization.
hope it helps, I'm just being general on the topic.
The diagram summarizes the light-dependent reactions of photosynthesis.
х
Light dependent reaction
Oxygen
Chemical
energy
What is the input of the light-dependent reactions, labeled X?
Answer:
Light energy.
Explanation:
Light-dependent reactions require light energy to make two molecules needee for the next stage.
What is the function of the hormone progesterone?
ОООО
preparation of the body for maintaining pregnancy
development of male secondary sex characteristics
development of female secondary sex characteristics
preparation of the fallopian tube for fertilization
Answer:
A. preparation of the body for maintaining pregnancy
Explanation:
Progesterone hormone function in preparing the body in order to maintainpregnancy.
What is Progesterone?Progesterone is a type of hormone that belong to group of steroid hormones called ‘progestogens’. This hormone play important in maintaining pregnancy. progestins is a Synthetic hormones that have a similar action to that of progesterone. Progesterone is secreted by the corpus luteum in the ovary during the second half of the menstrual cycle. It functions during menstrual cycle.
Therefore, Progesterone hormone function in preparing the body in order to maintain pregnancy.
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What are the monomers of DNA called
Answer: The monomer units of DNA are nucleotides.
Explanation: Hopefully this was helpful :)
Why does your pulse rate increase as your level of activity increases?
Please answer quick!
Answer:
In response to exercise, both aerobic and strength training, your heart rate increases Hopefully this helps!
What is the shape of a BH3 molecule?
Answer:
The shape of a BH3 molecule is trigonal planar.
Which type of deposition creates sandbars? glacial river wave wind
Answer:
C / Waves
Explanation:
I took on exam got 100%
The type of deposition that creates sandbars is waves. Waves build sandbars far from shore, until they rise above the water's surface
What is sandbars?A sandbar or offshore Bar is submerged or partly exposed ridge of sand or coarse sediment that is built by waves offshore from a beach.
Deposition that creates sandbarsThe type of deposition that creates sandbars is waves.
As waves break, this pulls material from the shoreline, migrating further into the ocean. During heavy storms, large waves can build sandbars far from shore, until they rise above the water's surface.Thus, the type of deposition that creates sandbars is waves. Waves build sandbars far from shore, until they rise above the water's surface.
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how does the kidney maintain blood pH
ok
Explanation:
the kidney helps control acid - base balance by excreting hydrogen ions and generating bicarbonate that helps maintaining blood plasma PH within a normal range
Explanation:
by the renal system. buffers ph in blood, by helping the excretion in h+.
blood plasma, proteins, phosphate, bicarbonate, carbonic buffers...
Describe the body’s first lines of defence: (not including the immune system)
Answer:
physical and chemical.
Explanation:
The first line of defence includes
1. Physical eg: nails
2. chemical : that are always ready and prepared to defend the body from infection.
These include your skin, tears, mucus, cilia, stomach acid, urine flow,
friendly bacteria
What’s the power house of a cell
Answer:
mitochondria
Explanation:
Mitochondria is known as power house of a cell
________________________________
Hey!!
Mitochondria is called the power house of cell.
It is called the power house of cell because it is responsible for release of energy.
Hope it helps...
Good luck on your assignment
#Stay safe#
______________________________
Identify the phase the cell is in
Interphase
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis
Answer:
The four stages of mitosis are known as prophase, metaphase, anaphase, telophase. Additionally, we'll mention three other intermediary stages (interphase, prometaphase, and cytokinesis) that play a role in mitosis. During the four phases of mitosis, nuclear division occurs in order for one cell to split into two
Explanation:
Give an example of human cells that use active transport.
Answer Active transport is usually associated with accumulating high concentrations of molecules that the cell needs, such as ions, glucose and amino acids. Examples of active transport include the uptake of glucose in the intestines in humans and the uptake of mineral ions into root hair cells of plants.
Explanation:
if water were a nonpolar molecule, how would it’s properties be different?
Answer:
Sep 28, 2016 - If water were a nonpolar molecule how would its properties be different. ... Water would no be able to form hydrogen bonds. D.
Explanation:
Where does carbohydrate production occur in a chloroplast?
A. In the cytosol
B. In mitochondria
C. In the thylakoid
D. In the stroma
Answer
D:In the stroma
Answer:B
Explanation:in the stroma
27. Which material inside bones is responsible for making blood cells?
O cartilage
O joints
O interstitial fluid
O red marrow
how oxygen produced??
Answer :
Plants take in carbon dioxide from the atmosphere, water from the soil and light energy from Sun.
Photosynthesis occurs.
Oxygen and energy are produced.
There are 21% of oxygen in the atmosphere.
Answer:
Explanation:
photosynthesis consists of two major phases
Light reactions
Dark reactions
oxygen is produced in light reaction by the oxidation and reduction of carbondioxide and water.
Oil formation occurs where millions of years ago there were large oceans.this is because oceans have
A- waves that are constantly moving
B- great numbers of tiny marine animals
C-currents that mix the water throughly
D-deep caverns where no light can reach
Answer: A- waves that are constantly moving
Explanation:
Oil is formed from remains that settles in the ocean over the year,this remains are be acted upon by bacteria in the oceans to form hydrocarbons from where fossil fuel is formed in the ocean floor. This is possible because of the movements of waves in the ocean that allows for mixing of this remain and its movement to ocean floor.
Name the two types of magnets?
Answer:
hourse and bar magnet tq mark
Answer:
Permanent magnets and electromagnets
