Answer:
The capillaries
Explanation:
This is where the exchange of gases , nutrients and waste occurs between the tissues and the blood due to the small pores and spaces are between the cells
what are nodes and inter nodes
Answer:
Nodes are the regions on the stem from which leaves develop, while internodes are the regions between two nodes.
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How does mitochondria help the cell get the material it needs
Answer:
Known as the “powerhouses of the cell,” mitochondria produce the energy necessary for the cell's survival and functioning. Through a series of chemical reactions, mitochondria break down glucose into an energy molecule known as adenosine triphosphate (ATP), which is used to fuel various other cellular processes.
A chemical bond formed when two atoms transfer electrons is called
Answer:
covalent
Explanation:
The Krebs cycle forms many products. Which option lists the correct products of the Krebs cycle after 1 molecule of glucose goes through it?
net 2 NAD+, 2 ATP, 4 CO2, 2 FADH
net 1 NADH, 1 ATP, 2 CO2, 1 FADH2
net 4 NADH, 4 ATP, 8 CO2, 4 FADH2
net 2 NADH, 2 ATP, 4 CO2, 2 FADH2
Answer:
Net 2 NADH, 2 ATP , 4 CO2, 2 FADH2
Explanation:
The correct products of the Krebs cycle after 1 molecule of glucose is ( option 4 ) ; Net 2 NADH, 2 ATP , 4 CO2, 2 FADH2
The Krebs cycle is a cycle/series of chemical reactions utilized by aerobic organisms in the generation of energy that is stored in phosphate bonds (ATP) through oxidizing acetate ( gotten from carbohydrates, fats and protein) into [tex]CO_{2}[/tex].
Hence when 1 molecule of glucose through the Krebs cycle the correct products will be Net 2 NADH, 2 ATP , 4 CO2, 2 FADH2
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Which of the following is NOT one of the four systems into which scientists divide earth
A.biosphere
B.hemisphere
C.geosphere
D.hydrosphere
Answer:
Should be D
Explanation:
The one that is not one of the four systems into which scientists divide earth is hemisphere. The correct option is B.
What are the spheres of Earth?
The four main subsystems of the Earth are the land, the water, the living beings, and the air. The term "spheres" refers to these four subsystems.
They are the "geosphere" (land), "hydrosphere" (water), "biosphere" (life) and "atmosphere," specifically (air).
The biosphere, geosphere, hydrosphere, and atmosphere are the spheres. Together, they are in charge of establishing and preserving the Earth's climate, geological processes, and life.
The main significance of the hydrosphere is that it supports a variety of life forms, is crucial to ecosystems, and regulates the atmosphere. All of the water on the Earth's surface is covered by the hydrosphere.
Thus, the correct option is B.
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Why does dna need to replication short answer please
DNA replication needs to occur because existing cells divide to produce new cells.Each cell needs a full instruction manual to operate properly. So the DNA needs to be copied before cell division so that each new cell receives a full set of instructions!
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What type of energy is used to break the bonds in glucose?
Answer:
adenosine triphosphate, or ATP.
Answer:
Chemical energy is used.
The root word “lun” or lune refers to the ____________
Answer:
Lun or Lunar are references for the moon.
Explain how roots hair cells use osmosis to take up water.
Answer:
Plants absorb water from the soil by osmosis. They absorb mineral ions by active transport, against the concentration gradient. Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption.
Explanation:
Answer:
Plants absorb water from the soil by osmosis. They absorb mineral ions by active transport, against the concentration gradient. Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption.
If carbon dioxide was removed from a plant's environment, what would you expect to
happen to the plant's production of sugars?
O fewer sugars will be produced
more sugars will be produced
O carbon dioxide does not affect the production of sugars in plants
o the same number of sugars will be produced but without the carbon dioxide
Answer: Fewer sugars will be made because plants use carbon dioxide in photosynthesis.
Hope this helps
Plants are autotrophs, which prepare their food in the presence of sunlight, water, and carbon dioxide to yield sugar and oxygen.
The carbon dioxide is removed from the plant's environment, then less sugar will be produced.
Photosynthesis is a metabolic process in which plants prepare food in the presence of sunlight, carbon dioxide, and water. The products of photosynthesis are oxygen and sugar molecules.
The carbon dioxide if removed or reduced from the plant's environment, then the plants will be unable to perform photosynthesis properly, and in the limited resources, the products formed will be reduced.
Thus, the correct answer is Option A.
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Give two uses of energy transferred by respiration in eukaryotes
Answer:
Most aerobic respiration takes place inside mitochondria. Some of the energy released in respiration is used to make larger molecules from smaller ones, to enable muscles to contract and to keep temperature steady. Some of the energy released in respiration in plants is used to make amino acids and proteins.
Explanation:google said it and i had this question in my science class and got it right
The uses of energy are - energy for metabolic reaction and growth and development of cells.
Cellular respiration provides energy with the series of complex chemical reaction cycles that is used for:
Working your muscles - for movement and physical activities energy is required.Growth and repair of cells - dividing cells, repairing them and development of the cells also require energy.Building larger molecules from smaller ones for instance proteins from amino acids.Allowing chemical reactions to take place.Absorbing molecules in active transport.Thus, The uses of energy are - energy for metabolic reaction and growth and development of cells.
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How do calcium ions help amplify the signal?
HELP PLEASE!!!
Answer:
Calcium signaling is the use of calcium ions (Ca2+) to communicate and drive intracellular processes often as a step in signal transduction. Ca2+ is important for cellular signalling, for once it enters the cytosol of the cytoplasm it exerts allosteric regulatory effects on many enzymes and proteins. Ca2+ can act in signal transduction resulting from activation of ion channels or as a second messenger caused by indirect signal transduction pathways such as G protein-coupled receptors.
Explanation:
Wikipedia
Which statements describe oceanic crust? Select the two correct answers.
A. It’s age ranges from very young to more than 4 billion years old.
B. It is formed at zones of volcanic activity on the ocean floor.
C. It is made of all types of rocks.
D. It is between 25 and 70 km thick.
E. It contains silicate minerals high in iron and magnesium.
Answer:
The correct answers are options B. "It is formed at zones of volcanic activity on the ocean floor. ", C. "It is made of all types of rocks" and E. "It contains silicate minerals high in iron and magnesium."
Explanation:
In Geology, the continental crust is defined as the layer of the Earth that allowed the formation of the continents. This layer is made of all types of rocks, including igneous, metamorphic, and sedimentary rocks. This layer is also considered silica-rich, or felsic, because of its high content of silicate minerals. Regarding the thickness of continental crust, it is between 25 to 70 km thick. This is considerable thick considering that oceanic crust which barely reaches 10 km thick.
please help me :( did anyone took the isat ( International student admission test) ??
If you want to move a 12kg object at 2m/s, how much force must be applied?
Answer:
F = 24 N
Explanation:
im not 100% sure if this is correct but tried
what are the proteins used in active transprot called
all the facts and observations gathered in an experiment are called A.conclusions B.Data C.theories D.hyposthesis
Answer:
data
Explanation:
All the facts and observations gathered in an experiment are called data. Therefore, option B is correct.
What is an experiment?An experiment is a technique used to confirm or deny a hypothesis, as well as assess the likelihood or effectiveness of something that has never been tried before. Experiments show what happens when a specific factor is modified, which sheds light on cause-and-effect relationships.
The three primary categories of scientific experiments are quasi-experimental, observational, and experimental (non-experimental). The most rigorous type of scientific investigation is experimental, often known as randomized control. The most control is present, as the name would imply.
Data are the facts and the observations gathered in an experiment. Therefore, option B is correct.
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Essential nutrients move through a cell membrane by both passive transport and active transport. Which of the following correctly describes the transport of materials across a cell membrane?
a) Active transport requires chemical energy to move nutrients from areas of low concentration to areas of high concentration.
b) Passive transport requires chemical energy to move nutrients from areas of low concentration to areas of high concentration.
c) Active transport moves nutrients from areas of high concentration to areas of low concentration without the use of chemical energy.
d) Passive transport moves nutrients from areas of low concentration to areas of high concentration without the use of chemical energy.
Answer:
I think it would be d.
Explanation:
Do ocean currents affect aquatic life? What do you think and why?
How does the change in atmospheric conditions affect aquatic life? Explain your response.
The ocean life would die off because less salinity in the water and if the currents decrease in strength the nutrients they carry would not make to the life in the oceans and ocean life would die.
examples of bacteriophage
Examples of bacteriophages are: 1) Temperate phages (mu and lambda) 2) Filamentous and spherical phages , both having ssDNA (single stranded DNA)
glucose molecules moving through protein channels is an example of what type of transport
A- Facilitated diffusion
B- Active transport
C- Passive transport
D- Osomosis
Answer:
B-active transport
Hope it will help
Thank you
Describe how radiocarbon dating method is used to find the absolute age of a fossil?
Answer:
Radiocarbon dating involves finding the age of an ancient fossil by measuring its carbon-14 content. Carbon-14 (radiocarbon), is a naturally occurring radioactive isotope that forms when cosmic rays in the upper atmosphere strike nitrogen molecules, which then oxidize to become carbon dioxide.
Please help me if you want!
Answer:
Your answer is C
Is RNA Is a double helix
Amoeba Sisters: Cell Cycle and Cancer Video notes
All living things are made of cells is part of the
Functions of
our cells are regulated as part of something called the
Cells can grow and increase in size, however, a multicellular organism increases in size
through
Cancer partly comes from cells that
With some cancers, there may be
links, meaning it might run in
families. Other causes, in addition to genetics, may be exposure to
radiation, or excessive exposure to
from the sun's rays.
When cancer cells divide, it can give rise to a
Some of them stay put
but some do not. Treatments have been developed, such as radiation and
therapy that target cells that
rapidly.
Cells are in one of two different phases of the cell cycle:
-- where the cell is growing, replicating their DNA, and doing their cell
functions.
_- includes splitting of the DNA, cytoplasm, and dividing to make more
cells.
Cells spend most of their time in
which is made up of
(synthesis), and DNA is replicated in phase.
The cell cycle has checkpoints to make sure things are happening correctly, there is one
in one in and one in
There are many
_involved with regulating the cell cycle.
Some cells do not go through all of the phases. Some cells are in which is a
phase for cells, such as the cells in the
and spinal cord.
This is why damage to these organs can have challenges with healing, because many of
those cells may not be able to
Answer:
if u ask a tutor u can get the answer faster than having to wait on random people to answer your question for you
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What macromolecules make up the cell membrane? Based on the information you have from the diagram. (check all that apply)
- polysaccharides
- proteins
- lipids
- nucleic acids
How is radioactive decay related to radiometric dating
Answer:
Radiometric dating, often called radioactive dating, is a technique used to determine the age of materials such as rocks.
Explanation: It is based on a comparison between the observed abundance of a naturally occurring radioactive isotope and its decay products, using known decay rates.
The function of root cap is.....
A.
Absorb water
B.
Enlarge the absorption of water
C.
Growth of root
D.
Protects apical meristem
Which type of weathering occurs most frequently at high elevations, and can bring mountains down to sea level over time?
The reactants for photosynthesis are carbon dioxide, water and sunlight (light energy).
true or false