Answer:
B
Explanation:
A book is sliding along a desktop. Because the book is in motion, you know that the forces acting on the book are ______? What is the force acting against the book?
Answer:
Normal force, gravity and Friction.
Explanation:
The forces acting on the book are normal formal force which act or exerts by the table on the book while on the other hand, gravity is a force that acts in the downward direction. Friction is the force that acts against the motion of the book and is responsible for lowering speed of the book that is sliding on the surface of the table. If the friction is low between the book and table then the book moves easily on the surface.
oxygen transport in humans involves the bonding of oxygen with
A : white blood cells
b :platelets
C :Hormones
D Hemoglobin molecules
Answer:
i think it's d. hemoglobin molecules
Oxygen transport in humans involves the bonding of oxygen with hemoglobin molecules. Therefore, option (D) is correct.
Human oxygen transport is essential for delivering oxygen, a key gas needed for cellular respiration, to all tissues and organs. Haemoglobin molecules in red blood cells deliver oxygen.
Oxygen diffuses into the bloodstream and meets haemoglobin in the lungs. Oxyhemoglobin is formed when haemoglobin binds to oxygen molecules. Oxygen partial pressure and other factors affect reversible binding.
The heart pumps oxygenated blood via the circulatory system to tissues and organs. Oxyhemoglobin releases its oxygen, allowing cells to use it in cellular respiration to make energy. The mechanism efficiently supplies oxygen for metabolic needs. Life and physiological activities depend on this mechanism. Therefore, option (D) is correct.
Learn more about Hemoglobin, here;
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Living organisms are made up of energy and matter.
5. Microwave
Situation: John saw his mother place a cold bread inside a microwave oven. After 3 minutes, his mom removed the bread from the oven and gave it to John John observed that the bread is warm after it was placed in the microwave oven. John wondered what caused the cold bread to warm up after it was placed in the microwave oven.
Observation/s:
Inference:
What is the entire object shown in the image?
List and describe 4 features of the ocean floor
Answer:
Humans beings haven't touched the ocean floor.but the features is -The deep ocean is dark, very cold and has tremendous pressure from the overlying water.Scuba divers can explore only to about 40 meters, while most submarines dive only to about 500 meters. Scientific research submersibles have explored the ocean’s deepest trenches, but most are designed to reach only the ocean floor.Today much of our exploration of the oceans happens using sonar and remotely operated vehicles.Features of the ocean include the continental shelf, slope, and rise. The ocean floor is called the abyssal plain. Below the ocean floor, there are a few small deeper areas called trenches. Features rising up from the ocean floor include seamounts, volcanic islands and the mid-oceanic ridges and rises.Which of the following is a function (job) of proteins?
Select all that apply.
A . Proteins act as antibodies to defend the body from harmful substances.
B . Protein act as the main fuel source for cells
C. Proteins build structures such as muscles .
D . Proteins help to speed up chemical reaction in the cell .
During reduction, PGA reacts with ATP and NADPH. What does ATP contribute to the reaction?
carbon
Answer:
During reduction, 3-PGA reacts with ATP and NADPH. What does ATP contribute to the reaction? ... The L-D reactions require light energy and water, and the L-IND reactions require ATP, NADPH and CO2. In the chemical equation for photosynthesis, carbon dioxide and water are converted to glucose and oxygen.
Explanation:
correct me if I'm wrong
carry on learning!;)
mass extinction definition
Answer:
The extinction of a large number of species within a relatively short period of geological time, thought to be due to factors such as a catastrophic global event or widespread environmental change that occurs too rapidly for most species to adapt.
Explanation:
Hope this is helpful.
1. True-or-false: All of the substances present in nature are made up of less
than 100 types of particles. These particles are called molecules.
Answer:
False
Explanation:
there are billions of known molecules.
The density of a white dwarf is
Answer:
The density of a white dwarf is 1 x 109 kg/m3.
Explanation:
A typical white dwarf is half as massive as the Sun, yet only slightly bigger than Earth. An Earth-sized white dwarf has a density of 1 x 109 kg/m3. Earth itself has an average density of only 5.4 x 103 kg/m3. That means a white dwarf is 200,000 times as dense.
1 x 10⁹ kg/m³ is the density of white dwarf. It is 200000 times denser than Earth. And it is the second densest object we know after neutron star.
If the following is the sequence of an mRNA, what would be the DNA
sequence?U ACCCGUUAA
1. Members of a Boy Scouts troop were advised by their leader to take water with them on their hike into the mountains. One boy decided to drink a large quantity of water before leaving on the hike. Explain how his body functions to deal with the excess water.
2. Explain why the composition of urine produced would differ in someone who drank a lot of water compared to someone who had no water for over 24 hours.
How does ocean expansion occur?
Answer:
Global sea level has been rising over the past century, and the rate has increased in recent decades. ... The two major causes of global sea level rise are thermal expansion caused by warming of the ocean (since water expands as it warms) and increased melting of land-based ice, such as glaciers and ice sheets.
Explanation:
Hope this helps
Which statement describes the chemical property of copper that results in
the formation of tarnish?
O A. It does not burn.
O B. It has a very high boiling point.
C. It has a low density.
O D. It reacts easily with other substances.
Answer:
it reacts easily with other substances. This is why they easily rust and oxidize when in contact with oxygen, and tarnish when meets water.
Scientists compare fossils of extinct organisms to modern organisms. Fossils show that:
A. Modern organisms have not changed from their ancestors
B. Modern organisms and extinct organisms are not related
C. All of the answer choices are correct
D. Extinct organisms have homologous structures with modern organisms
D. Sinh vật tuyệt chủng có cấu trúc tương đồng với sinh vật hiện đại
Mã di truyền có tính phổ biến
Herbicides are chemicals that kill plants by interrupting important biological processes. Different herbicides affect different plant processes. The herbicide atrazine prevents the chemical reactions that use energy from sunlight.
A plant is sprayed with atrazine.
Exposure to atrazine causes an immediate decrease in the production of two substances in plant. Select the substance.
A. DNA
B. Carbon dioxide
C. Oxygen
D. Phospholipids
Answer:
oxygen because that's one of the substance that plants produce.
You can also do this by the process of elimination. Knowing that atrazine impedes the production of substances in plants, we know that it can't be DNA and Phospholipid. Carbon Dioxide is used by plant, not produced; thus, oxygen is the answer.
A herbicide is a type of pesticide that is used for controlling the weeds so that the plants can get nourishment. They are common weed killers used to clear taw waste groups and constructional areas.
These herbicides are used for different plants and prevents the chemical reaction that makes use of energy. The plants are sprayed with the chemical called atrazine which is used to decrease the production of oxygen.Hence the option C is correct.
Learn more about the kill plants by interrupting important biological.
brainly.com/question/13970708.
Knowing that the lava from the ring of fire has
lots of silica in it, name ONE extrusive Igneous
rock that you may find near the ring of fire.
Please help this is due today
Answer: Granite
Explanation:
hope it helps
Which of the following is attached to the transfer RNA (TRNA)? *
ribosome
RNA
codon
O amino acid
Answer:
One end of the tRNA binds to a specific amino acid (amino acid attachment site) and the other end has an anticodon that will bind to an mRNA codon.
Explanation:
name the gland that produces the hormone that stimulates growth
A. pituitary gland
B. thyroid
C. adrenal glands
D. pancreas
Answer:
a ........Pituitary gland
Why do caves form in Sandy Glacier, but not in larger thicker glaciers?
Select the correct answer.
Which organ connects the kidney to the urinary bladder?
A.
gallbladder
B.
rectum
C.
renal pelvis
D.
ureter
E.
urethra
How is the waxy cuticle of land plants an adaptation for living in land?
What part of the body is not working as it should when you have diabetes
Answer:
blood vessels
Explanation:
Each type of diabetes involves the pancreas not functioning properly. The way in which the pancreas doesn't function properly differs depending on the type. No matter what type of diabetes you have, it requires ongoing monitoring of blood glucose levels so you can take the appropriate action.
Answer:Liver / kidneys/ heart are mainly affected but all your organs are affected. Explanation: Both type one and two do damage to organs over time from lack of nutreints. Or an overload of sugar.
the scientific method uses observation and what other process to answer a question
→ The correct answer that would answer the given question above would be EXPERIMENTATION. The scientific method uses observation to gather information, and to answer the questions based on the information gathered, this would involve experimentation. This is the testing of the information so that it would given a clear evidence on the answer.
I hope it's helps ╮(＾▽＾)╭
#CarryOnLearningGlycolysis occurs during aerobic or anaerobic conditions.
True
False
pls help
Answer:
true
Explanation:
Glycolysis occurs in both aerobic and anaerobic states. In aerobic conditions, pyruvate enters the citric acid cycle and undergoes oxidative phosphorylation leading to the net production of 32 ATP molecules. In anaerobic conditions, pyruvate converts to lactate through anaerobic glycolysis
Which of the following is NOT essential for protein synthesis? *
Oribosomes
O
tRNA
O
mRNA
carbohydrates
Answer:
carbohydrates
Explanation:
3. The absorptive effectiveness of the small intestine is enhanced by increasing the
surface area by
A villi.
C. digestive juices
B. enzymes.
D. elasticity of intestine,
Answer:
A villi.
Explanation:
Small intestines have finger-like extensions that basically increase the surface area for nutrients to attach and get transported inside the bloodstream or cells.
Answer:
ashlaylawrence can you fart on my face
4. Kaden is hanging out at Mason's house. They have been friends forever. They
are playing a video game when, all of a sudden, Mason leans over and kisses
Kaden. Kaden is shocked and doesn't know how to respond. Mason continues
kissing Kaden and starts to touch Kaden. Kaden pulls away and explains the
uncomfortableness of the situation. Mason insists they have strong feelings for
each other and need to take it to the next level. Mason continues to encourage
Kaden to just let it happen. Kaden is still hesitant. Finally, Mason realizes Kaden is
not consenting since Kaden has not actively said "YES" and decides to talk about
it. Mason is correct to stop and talk instead. *
True or false?
Answer:
true
Explanation:
you should never proceed with sexual advance, or any advance really without a for sure verbal consent given.
Which of the two growth models, exponential or logistic, would you say that the human population portrays? Explain your answer.
Answer:
The human population portrays an exponential model
Explanation:
The human population has grown very fast in the past 100 years after the addition of modern technology and easier and safer work people die less frequently hence more are born and there are more people to reproduce with each other and so on and so on