Explanation:
To prove the necessity of carbon dioxide in photosynthesis following steps need to do
Insert a part of the leaf of a destarched plant into a conical flask containing potassium hydroxide.
Potassium hydroxide solution absorbs the carbon dioxide gas from the air present in the glass bottle.
Leave the plant sunlight.
After few hours, perform a starch test to this and another leaf of the same plant.
Observation-
Leaf exposed to the atmosphere are bluish black.
Leaf exposed to KOH does not change to blue-black colour
Result- Starch is present in the green part of the leaf.
Conclusion- Presence of starch proves that chlorophyll is necessary for photosynthesis as it traps sunlight.
8. Example Eight 14.3
The diagram below represents a cell.
2
Which organelle is the site where amino acids are synthesized into proteins?
A.1
B.2
C.3
D.4
The cell organelle which serves as the site of protein synthesis in the cell is the ribosomes.
What are cell organelles?Cell organelles are membrane-bound structures whivh are found embedded within a cell cytoplasm and which perform specific functions for the cell.
Some cell organelles include:
mitochondria ribosomeslysosomesGolgi bodiesThe ribosome is a cell organelle which functions as the site for protein synthesis in the cell.
Therefore, the site of protein synthesis in the cell is the ribosomes.
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please help on these two pictures
Answer:
1.) D.
2.) A.
3.) C.
4.) Mutualism
5.) either parasitism or predator-prey
6) toxins
7) host
8)viruses
Which of these organisms has a sac body plan, and radially symmetry?
Answer:
?
Explanation:
I'm gonna need a picture or some options because you question makes no sense
The organisms like Jellyfish, Corals, and sea anemones have a sac body plan, and radially symmetry.
What do you mean by Radial symmetry?
Radial symmetry may be defined as the symmetry in which the sides indicate correspondence or regularity of the parts around a central axis.
Apart from the above organisms, the member of the phylum Coelenterate which contains approximately 10,000 species also possesses the same body plan.
Therefore, the organisms like Jellyfish, Corals, and sea anemones have a sac body plan, and radially symmetry.
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which of the following species of fish would likely contain the highest levels of contaminants? mahi-mahi swordfish flounder salmon
Swordfish would likely contain the highest levels of contaminants.
When using a high magnification lens, how can you bring the object you are viewing into sharper focus?Question 2 options:
adjusting the diaphragm
use the coarse adjustment knob
moving the stage clips
use the fine adjustment knob
Answer:
Use the fine adjustment knob
How is a nerve impulse generated when most sensory receptors are activated?.
Answer:
The trigeminal nerve is the part of the nervous system responsible for sending pain, touch and temperature sensations from your face to your brain. It is a large, three-part nerve in your head that provides sensation.One section called the mandibular nerve involves motor function to help you chew and swallow.Explanation:
What is the only form of nitrogen that plants can absorb?.
The only nitrogen plants can absorb is nitrate. Nitrogen assimilation in plants. Plants absorb nitrogen from the soil in the form of nitrate (NO3−) and ammonium (NH4+). In aerobic soils where nitrification can occur, nitrate is usually the predominant form of available nitrogen that is absorbed.
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Natural killer (NK) cells ________. A) are also called cytotoxic T cells B) are a type of phagocyte C) are cells of the adaptive immune system D) can kill cancer cells before the immune system is activated
Natural killer (NK) cells are also called cytotoxic T cells (Option A).
What are NK cells?The NK (Natural killer) cells are cytotoxic lymphocytes that trigger responses from the innate immune system.
Natural killer cells are one of the most important types of lymphocytes (white blood cells) in human cells.
These cells have cytotoxic properties because they produce cytotoxic granules and different cytokines.
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S
11. Evaluate how a person's blood calcium levels
would be affected if his or her thyroid gland
stopped working.
our thyroid glands plays a main role in a human body. It secretes thyroxine and calcitonin. In which thyroxine help in growth and cellular metabolism and calcitonin helps to regulates calcium concentration in blood . If thyroid gland stops working then there is low level of calcium in our blood, which leads to mental and hormonal disorder. In this way a person's blood calcium level would be affected if his/her thyroid gland stops working.
Explain the structure and function of the eye as a sensory receptor including the role of;
A) The cornea and lens
B) The iris
C) Rod and cone cells in the retina
NOTE - the letters listed are NOT answers, they are separate points that need clarifying.
Answer:
A) The cornea is the transparent outer covering of the eye,The lens is a curved structure in the eye that that bends light and focuses it for the retina to help you see images clearly.The lens works together with the cornea to focus light correctly on the retina. When light hits the retina (a light-sensitive layer of tissue at the back of the eye), special cells called photoreceptors turn the light into electrical signals.
B)The iris is the part of the eye that makes up your eye color. A circular muscle with a hole in the middle.The iris controls the amount of light that enters the eye by opening and closing the pupil. The iris uses muscles to change the size of the pupil. These muscles can control the amount of light entering the eye by making the pupil larger or smaller.
C)Rod cells are highly sensitive to light and function in nightvision, whereas cone cells are capable of detecting a wide spectrum of light photons and are responsible for colour vision.
Note - hope this is accurate :)
Name the cell that contains lots of chloroplasts for photosynthesis
Answer:
parenchyma cells of the leaf mesophyll
Explanation:
Answer:
Palisade cells have the most chloroplasts per cell, making them the major site of photosynthesis in the leaves of plants with them, turning light energy into chemical energy in the form of carbohydrates.
Explanation:
The study of embryological similarities and differences among species is called _______.
Comparative embroyology
explanation:
Comparative embroyology is the study of the similarities and the difference.
Match the key terms to their corresponding definition!
Answer:
Denature - Break down, Substrate- What an enzyme acts on, Inhibitor- Decrreeses activity, Transition state- Highest energy
Explanation:
Peroxidase is a protein. What is this protein’s function, and how did it get its name?.
Answer:
Most peroxidases are ferric heme proteins; one notable exception being the glutathione peroxidase, which is a selenium-containing enzyme. They are present in virtually all living species.
Protein has many roles in your body. It helps repair and build your body's tissues, allows metabolic reactions to take place and coordinates bodily functions. In addition to providing your body with a structural framework, proteins also maintain proper pH and fluid balance.
Humans use more fresh water for ________ than for any other purpose.
Answer:
hello.
The answer is “irrigating crops”.
Answer:
Agriculture
Explanation:
Humans use more freshwater for irrigating crops than for any other purpose.
In and agricultural area, heavy rainfall caused a flash flood. the topsoil from a freshly fertilized field washed into a local stream. as a result, the amount of nitrogen in the water drastically increased, causing algae to grow record levels and cover the surface of the stream. what effect did this bloom of algae have on the stream?
Answer:
The algae can release harmful chemicals known as "bio-toxins" that can contaminate the water and kill the organisms living in the ecosystem
Explanation:
Question 23 (1 point)
Which below is NOT part of the lymphatic system?
a
spleen
b
bone marrow
C
lymph nodes
Od
tonsils
Choose the best option to complete the sentence.
Scientists worried that cloned animals would age rapidly because their cells contain _____ as old as the individual they were cloned from.
a. cytoplasm
b. RNA
c. proteins
d. DNA
Answer:
D DNA
Explanation:
I took the test and got it right
Which of the following is required for photosynthesis to take place? a. sugar b. oxygen c. atp d. water please select the best answer from the choices provided a b c d
The answer will be :
D. water.
Water, is required for photosynthesis to take place.
How does photosynthesis work in plants?Photosynthesis is the process of creating sugar and oxygen from carbon dioxide, water and sunlight. It happens through a long series of chemical reactions.
But it can be outlined like this Carbon dioxide, water and light go in. Glucose, water and oxygen come out.
Thus, Water, is required for photosynthesis to take place.
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why was soil in wheat farms so much more vulnerable to erosion?
Explanation: The potential soil erosion increases if the soil has no or very little vegetative cover of plants/grass and/or crop residues. Plant and residue cover protects the soil from rain impact and splashes from it. It tends to slow down the movement of runoff water and allows excess surface water to infiltrate.
I hope this helps you! Have a nice day or night!!
Which question about a soil sample can be answered using the sense of touch?(1 point) What color is the soil? What color is the soil? Is the soil grainy? Is the soil grainy? How quickly does water flow through the soil? How quickly does water flow through the soil? Does the soil smell good or bad? Does the soil smell good or bad?
The question that can be answered using the sense of touch is : ( B ) is the soil grainy
Sense of touch
The graininess of the soil can be felt by the touch of the hands because it is a physical attribute of the soil that can be seen and touched as well. the color of the soil and how quickly water flows through the soil can only be examined with the physical eyes but cannot be felt.
Hence we can conclude that the question that can be answered using the sense of touch is the soil grainy.
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For which of these reasons is the word expedite a verb?
O A. It can easily be pictured.
O B. It ends in -ite.
O C. It can be broken down into three parts.
O D. It has no antonyms.
Help
Answer:
answer is d
Explanation:
I just guest that hope it's correct
Answer: It ends in -ite.
Sea urchins tend to have great camouflage because they sometimes carry what two animals on there shells?
Sea urchins tend to have great camouflage because they sometimes carry algae and rocks on their shells.
What is camouflage?Camouflage is a defense mechanism used by certain organisms to avoid predation or surprisingly attack their prey.
Different animals possess different camouflage mechanisms. For example;
Chameleons change their color to that of their immediate environmentCertain snakes hide in vegetations that blend with their skin color.However, sea urchins are aquatic animals that tend to have great camouflage because they sometimes carry algae and rocks on their shells.
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If oxygen is absent during the second stage of cellular respiration,
a.) fermentation will occur.
b.) the Krebs cycle begins.
c.) the electron transport chain works more efficiently.
d.) glycolysis stops.
Answer:
Fermentation will occur.
The Krebs cycle occurs when acetyl-CoA combines OAA (oxaloacetate), C makes no sense, and Oxygen is vital for glycolysis...
label the parts of cells using words from the word bank?
1. organelles
2. membrane
3. cytoplasm
4. nucleus
biologydictionarynet
Question 4 of 10
What is the name of the planet next to the label A?
Solar System
EARTH
SUN
O A. Venus
B. Mars
Ο Ο Ο Ο
C. Saturn
OD. Mercury
The ______ are a series of fibrous connective tissue membranes covering the central nervous system.
Answer:
meninges
Explanation:
A student is investigating the strength of electromagnets she created using batteries, wire, and nails.
She uses two different-sized nails and varies the number of coils of wire around the nail to determine how many paper clips each configuration can lift. She makes a data table of the results.
The student hypothesizes that the number of coils has a cause-and-effect relationship on the strength of the magnetic devices she made. Which would be the best way for the student to test the devices to be sure that her hypothesis is accurate?
Explanation:
You will change two variables to make different electromagnets: the number of wire coils around the nail (10 or 20) and the number of D cell batteries.
10. In the process of photosynthesis, the ____
a. Calvin cycle yields CO2.
c. Calvin cycle breaks down H,O.
b. light-dependent reactions release oxygen.
d. light-dependent reactions produce NADP+.
Please answer asap for chance of brainiest! How would you expect the rate of meat digestion to differ in an animal whose digestive tract had less of the enzyme pepsin?
Answer:
The four basic types of digestive systems in animals are monogastric, avian, ruminant, and pseudo-ruminant. Monogastric animals, such as swine, eat rations high in concentrates. The avian digestive system, found in poultry, is completely different from the other three types of digestive systems.
Explanation:
The four basic types of digestive systems in animals are monogastric, avian, ruminant, and pseudo-ruminant. Monogastric animals, such as swine, eat rations high in concentrates. The avian digestive system, found in poultry, is completely different from the other three types of digestive systems.
Carnivores or meat eater, digestive system of them is very short because meat is very easy to digest, hence the level of acid in the stomach is high while the digestive system of herbivores are long so their digestion is slow and the level of acid in the stomach is high.
Who are Carnivores and Herbivores?A carnivore is an organism that eats meat, or the flesh of animals. Sometimes they are also called hunters while some prey are called prey. Carnivores are a major part of the food web.
A herbivore is an organism which feeds on plants, ranges from in small size tiny insects such as aphids to large, lumbering elephants to large animals like cow, buffalo . Herbivores are a major part of the food web.
Herbivores eat only plant or plant products like sheep, cow, goat, etc. Carnivores are those who can eat animals only, for example lions, tigers, etc.
Thus, Carnivores or meat eater, digestive system of them is very short because meat is very easy to digest, hence the level of acid in the stomach is high while the digestive system of herbivores are long so their digestion is slow and the level of acid in the stomach is high.
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