1. (b) How does transpiration provide water for essential life processes in plants?
Answer:
Concentration gradient forces the water to flow passively from the soil to the root, and to move up through the stem in the xylem and evaporates through stomata in the leaf. In such a way transpiration provides water for essential life processes in plants.
Which of the following organisms is a third-order consumer in the food web shown above?
Answer:Humans
Explanation:
its just the answer
Which organ is the site of gas exchange?
Answer:
lungs
Explanation:
lungs
During gas exchange oxygen moves from the lungs to the bloodstream. At the same time carbon dioxide passes from the blood to the lungs. This happens in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.
The lungs exchange gases
Which of the following lists organisms from oldest to youngest organisms on Earth?
a. bacteria, mammals, reptiles, fish
b. fish, bacteria, mammals, reptiles
c. bacteria, fish, reptiles, mammals
d. reptiles, mammals, fish, bacteria
Answer:
c
c is the correct anwser because if you date back to the young earth ot was nothing but water and bacteria was the first thing on earth and then came fish and then the land for reptiles
Distinguish which action would result in a reduction of mineral use? Smelting copper
B.
Refining crude oil
C.
Strip mining land
D.
Developing nanotechnology
Developing nanotechnology would result in a reduction of mineral use since only minute amounts of minerals are required.
What are minerals?Minerals refers the elemental form of elements found in the earth's crust either in the free or combined state with other elements.
Mining of minerals refers to the process of extracting minerals from the earth.
Nanotechnology would results in the use of minerals as it requires only very minute amount of these minerals in its processes.
Therefore, developing nanotechnology would result in a reduction of mineral use.
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Nutrients Nutrients are substances in food that supply the body with energy and raw materials needed for growth, repair, and mainteNnce. The nutrients that the body needs are water, carbohydrates, fats, proteins, vitamins, and minerals.
- Many of the body's processes take place in water. Water makes up a large part of blood and other body fluids.
- Simple and complex carbohydrates are the body's main source of energy. Complex carbohydrates, such as starches, must be broken down into simple sugars to be used for energy.
- Fats are formed from fatty acids and glycerol. Fats help the body absorb fat-soluble vitamins and are a part of cell membranes, nerve cells, and certain hormones.
- Proteins supply raw materials for growth and repair of structures such as skin and muscle. Many enzymes and hormones are proteins.
- Vitamins are organic molecules that the body needs in very small amounts. They are needed to help the body perform chemical reactions.
- Minerals are inorganic nutrients the body needs in small amounts. Examples of minerals include calcium and iron.
17. What are three ways the body loses water?
Answer:
The three ways that the body losses water are The body losses water through urinating.The body lossescwater through sweating after cooling the body.The body losses water by excess vomiting.(2)
why might stem cells from human embryos be more useful than stem cells
from adults?
Answer:
Embryonic stem cells are more useful than the adults stem cells because;
* Embryonic stem cells have the ability to create any cell type in the human body while, the adults stem cells are more specialized( they generally make cells only from their tissue of origin).
They have the capacity to divide into additional stem cells or any kind of body cell.
What is the importance of stem cells of embryo?Embryonic stem cells can develop into any type of human cell, whereas adult stem cells are more specialized and typically can only produce cells from the tissue from which they originated.
Additionally, it is simple to produce embryonic stem cells in a lab setting. There is always the option to manufacture more cells as needed because the cells can be developed through cultures.
Since embryonic stem cells are pluripotent, they are more adaptable in scientific experiments than adult stem cells. Finding novel treatments for ailments, wounds, and organ failure is one of the possible advantages of studying embryos.
Therefore, Embryonic stem cells are more useful than the adults stem cells.
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Why is a sidereal day longer than a solar day on Venus?
Answer:
The backwards rotation makes Venus the only planet in the solar system where the sidereal day is actually longer than the solar one. The sun returns to it highest point in the sky before the planet has completed one rotation. Combining all this together leaves Venus with a solar day that takes 117 Earth-days.
Explanation:
I have some great teachers. hope this helps!
How can 2 locations roughly the same distance from the equator (the same amount of sunlight) have such a different climates?
Answer:
Explanation:
Latitude or distance from the equator - Temperatures drop the further an area is from the equator due to the curvature of the earth. The humid subtropical climate is generally located between 25° and 35° latitude on the east sides of continents. Also, temperatures decrease as you move away from the equator.
which is the primary source of energy for most cells in the body
What evidence in the fossil record supports gradualism?.
Answer:
The evidence in the fossil record that supports gradualism is the intermediate forms of organisms showing graual change. An evolution pattern showing tiny changes in a species gradually adding up to major changes over long periods of time.
Explanation:
Photosynthesis and ______are considered opposite reactions. The matter is _______
between each process, because the products of one reaction are the reactants of the
other reaction.
The electrical impulse of the heart normally begins at the:.
Answer:
SA node (sinoatrial node)
Explanation:
SA node (sinoatrial node) – known as the heart's natural pacemaker. The impulse starts in a small bundle of specialized cells located in the right atrium, called the SA node. The electrical activity spreads through the walls of the atria and causes them to contract. This forces blood into the ventricles.
There are two main parts of the human skeleton: the __________ and _________ skeletons.
Answer:
axial skeleton and appendicular skeleton
The biological information stored in organisms is in the sequence of nucleotide bases (i.s., A, T C and G) in DNA molecule. true false
Answer:
True
Explanation:
DNA: ATCG
RNA: UTCG
Imagine a bird has a very specific adaptation. Another similar bird in the area doesn’t have the same adaptation. I’m just wondering, how does this work? Why don’t they have the same adaptation?
Answer:
evolution
Explanation:
adaptations are the result of evolution. Evolution is a change in a species over long periods of time.
hheelpp the test is happennig noww
Answer:
Option A
Explanation:
Xylem is made of dead cells that transport water. Stomata are pores in leaves that help CO2 enter the plant. Chlorophyll absorbs sunlight (it cannot accept green light which is why leaves are green, cuz they reflect the green wavelenght)
2. What are three characteristics of carbon that contribute to the diversity of organic compounds?
Catenation:
The property of self linkage among identical atoms to form long chain compounds is known as catenation. Carbon exhibits maximum catenation, when compared to elements like sulphur and silicon, due to strong carbon-carbon bonds and tetra valency. Due to this catenation, carbon atoms can form various types of straight chains, branched chains and ring structures.
Formation of multiple bonds:
Carbon atoms are capable of forming multiple bonds with other carbon atoms.
Hydrocarbons:
All the carbon compounds which contain just carbon and hydrogen are called hydrocarbons.
isomerism arises from the difference in the structure of carbon chain which forms the nucleus of the molecule. It is, therefore, named as chain, nuclear isomerism or Skeletal isomerism. For example, there are known three pentanes which have the same molecular formula.
6. An important role of bicarbonate ions in human blood is to
(A) carry oxygen
(B) act as a buffer
(C) bind with hemoglobin
(D) supply cells with carbon
(E) increase the rate of cellular respiration
Bicarbonate ions present in body performs a variety of functions, in blood it carries carbon dioxide. Its other functions include keeping the balance of acids and bases in the body. It acts as a buffer.
What is a buffer?Buffer is a type of solution that resists pH change either by the addition of acid or base.
Bicarbonate is a base, which the body requires to keep a normal acid-base (pH) balance.
This balance prevents the body from having too much acid means maintaining buffer. The lungs and kidneys helps to keep a normal blood pH by removing excess acid.
Thus, the correct option is B.
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Fragments of _________ released from Gram-negative bacteria into the bloodstream produce fever and shock. Lipopolysacharide N-acetylmuramic acid Phospholipid N-acetylglucosamine
Fragments of Lipopolysaccharide( LPS ) released from the Gram-negative bacteria into the bloodstream produces fever and shock
What is a gram negative bacteria ?Gram negative bacteria is classified based on its color after it must undergone a chemical reaction known as gram staining. Gram negative bacteria have a thin peptidoglycan layer.
The fragment of Lipopolysaccharide when released into the bloodstream will send the body into shock and fever as it is released from the Gram-negative bacteria.
Hence we can conclude that Fragments of Lipopolysaccharide( LPS ) released from the Gram-negative bacteria into the bloodstream produces fever and shock.
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Where does photosynthesis occur?
A. leaves
B. roots
C. bark
D. seeds
Answer:
a and b
Explanation:
because some plants with out leaf occurs in a root
A friend tells you that plants only need water to grow. do you agree? explain.
What is a zygote and how is it formed
Answer:
A zygote is a fertilized ovum. The germ cells undergo meiosis to reach a haploid state (n) as part of spermatogenesis and oogenesis. The sperm and the unfertilized ovum reinstates a chromosome set in zygote in a diploid state (2n).
After fusing with the sperm, the second stage of meiosis takes place for separation of chromatids. Post-fertilization, mitosis of the zygote is initiated which develops into a mature offspring exhibiting characteristics of its parent.
Explanation:
The zygote stage development occurs in the first week of fertilization. The genome of the zygote is the combination of DNA in each gamete and contains all the genetic information required to form an individual.
Answer:
Zygote is a diploid cell resulting from the fusion of two haploid gametes
it forms when a sperm penetrates the outer surface of an egg.
1. How do you think your organs work together to digest food?
2. What other inventions do you think are based on the functions of the digestive system?
3. How might you be able to tell that enzymes are working in your body?
4. How do different types of food change the number of digestive enzymes present in your body?
Answer:
1. Food moves through your GI tract by a process called peristalsis. The large, hollow organs of your GI tract contain a layer of muscle that enables their walls to move. The movement pushes food and liquid through your GI tract and mixes the contents within each organ.
2.The SmartPill is an ingested, wireless device for measuring the health of the digestive system. As it passes through the digestive tract, the capsule transmits data to a receiver, which is later returned to the doctor and the information downloaded onto a laptop computer.
3. When its not working many of the uncomfortable reactions such as an upset stomach, allergy-like symptoms or irritability are actually signs that the enzymes are working. The body is cleaning itself out and the healing process is starting.
4.One of the main reasons for reduced output of digestive enzymes is poor exocrine pancreatic function. The causes of Exocrine Pancreatic Insufficiency (EPI) are very diverse ranging from: Problems with the endocrine part of the pancreas such as insulin dysregulation from diet high in refined carbohydrates and diabetes.
Explanation:
I don’t need the answer, I just want to know what my teacher is expecting me to do. Am I supposed to say whether it’s multicellular or am I supposed to describe it some other way? If so, then what way?
Thanks, I just need your opinion ^^
Answer:
I think you have to describe it's features and characteristics and underline or circle the correct option f or unicellular or multicellular
Which organelle converts the chemical energy stored in food.
Answer:
Mitochondria
Explanation:
using oxygen available within the cell convert chemical energy from food to energy in a form usable to the host cell. The process is called oxidative phosphorylation and it happens inside mitochondria.
Label this diagram with the 3 options
Which interaction helps stabilize the tertiary level of protein organization?.
Answer:
Interactions among R groups results in hydrophobic interactions, hydrogen bonds, salt bridges, and sulfur-sulfur covalent bonds.
Explanation:
The above listed interactions help stabilize the protien organization (R group is the main player)
organisms swimming _______ are moving with the flow of water.
A) Downstream
B) Meltdown
C) Turbine
D) Ethanol
E) Passive solar cooling
F) Utility
G) First Law of Energy
H) Refinery
I) Isotopes
J) Second Law of Energy
Answer:
A) Downstream
Explanation:
Hope this helps! ;-)
When a chemical reaction does not occur, what happens to the atoms of the reactants
Answer:
In a chemical reaction, the atoms and molecules that interact with each other are called reactants. ... No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.
Explanation: