Answers
Related Questions
Why does the cell sometimes have to expend energy to move individual molecules across the cell membrane?
Answers
Answer:
Normally, molecules move naturally down a concentration gradient [From an area of high concentration to an area of low concentration] by a process called diffusion. However, sometimes the concentration of the needed substance is higher in the cell than out of it, so the cell uses a different process called Active Transport. Unlike Diffusion, Active transport requires energy, as it is going against a concentration gradient.
Cells expend energy to move cells across the cell membrane as they use Active transport rather than diffusion.
The most important structure in the lower respiratory tract is the alveolus.
O True
O False
Answers
Answer:
true
Explanation:
the lower respiratory tract contains:- trachea, bronchial tree, and lungs.
The largest mass extinction was in the
a. Precambrian time.
b. Cenozoic era.
C. Paleozoic era.
d. Mesozoic era.
Answers
Answer:
♡ hi fairy ♡
- Mesozoic, I just learned about this! it's so sad but it did help our society.
have a great day! hope i could help.
~madeline
✧･ﾟ: *✧･ﾟ:･ﾟ✧*:･ﾟ✧･ﾟ: *✧･ﾟ:･ﾟ✧*:･ﾟ✧
Explanation:
The largest mass extinction was in the: C. Paleozoic era.
The Paleozoic era is simply referred to as the earliest time of the three (3) geologic eras during the Phanerozoic era.
Generally, there are six (6) geologic periods in the Paleozoic era and they are listed from the youngest to oldest as;
The Permian.The Carboniferous.The Devonian.The Silurian.The Ordovician.The Cambrian.Some of the activities that took place between the start and end of the Paleozoic era time scale include;
I. In the early period of the Paleozoic era (The Cambrian), there were marine living organisms called phyla.
II. During the Paleozoic era, volcanic activities were experienced.
III. The Paleozoic era was prone to erosion and deposition of marine fossils.
IV. Lastly, the Paleozoic era was characterized by the largest mass extinction.
Read more: https://brainly.com/question/6560461
How might a plant cell compensate for the excessive membrane fluidity that occurs during prolonged exposures to elevated temperature?A) Reduce membrane cholesterol content.B) Alter the lipid composition to have longer fatty acyl tails and fewer double bonds.C) Alter the lipid composition to have shorter fatty acyl tails and more double bonds.D) Alter the lipid composition to have shorter and more unsaturated fatty acyl tails.E) Reduce cholesterol content and alter the lipid composition to have shorter fatty acyl tails.
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Answer:
E) Reduce cholesterol content and alter the lipid composition to have shorter fatty acyl tails.
Explanation:
Reducing the amount of fat makes the tissues or membranes have less plasticity, since these fatty acids with high temperatures increase their fluidity, are less dense and give greater plasticity in their elastic modulus.
n
Which type of energy refers to the sum of potential and kinetic energies in the particles of a substance?
SERE
motion
stored
internal
heat
Answers
Answer:
internal energy.
which of the following best describes the flow of energy in a cabbage plant?
A Solar Energy is absorbed by mitochondria, converted and stored in sugars, and released in chloroplasts.
B Solar Energy is absorbed by chloroplasts, converted and stored in sugar, and released in mitochondria.
C Chemical Energy is absorbed by chloroplasts, stored in sugars, and released in mitochondria.
D Chemical Energy is absorbed by mitochondria, stored in sugars, and released in chloroplasts.
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Explanation:
Hope this helps;)
What is inside a seed?
Answers
Answer:
inside a seed is a plant called the embryo
Explanation:
if u need more information msg me but i hope this helped u
Answer:
inside the seed will be a tiny plant cell called the embryo
2. Which of the following statements best describes exocytosis ? *
(1/1 Point)
The way cells grow and become adult cells
The way cells get rid of waste products
The way cell communicate with each other
The way cells take in food and other materials
O
Answers
What is the role of lay person like you in the mission of the church today?
Answers
Explanation:
base on the person opinion
19. What macromolecule is common to surface markers, receptors,
carriers and channels? *
protein
carbohydrate
lipid
nucleic acid
Answers
Which term best describes the organic molecule below?
Hint: There is a double bond in the center of the chain.
A. Cholesterol
B. Phospholipid
C. Saturated fatty acid
D. Unsaturated fatty acid
Answers
As a result of the double bond in the organic molecule below, we can tell that it is a D. Unsaturated fatty acid.
Unsaturated fatty acids:
Have at least a single double bond in their structure Are usually liquid at room temperature Are categorized into monounsaturated and polyunsaturatedOleic acid has a single double bond which makes it an unsaturated acid. It can be further classified as a monounsaturated acid due to it having just that one double bond.
In conclusion, Oleic acid is an unsaturated fatty acid on account of its double bond.
Find out more at https://brainly.com/question/4891995.
Which of the following explains the relationship of marbling to grade of beef?
the lower the amount of marbling, the better the quality of the carcass
the lower the amount of marbling, the higher the grade of the carcass
the more abundant the marbling, the higher the grade of the carcass
O the more abundant the marbling, the poorer the quality of the carcass
Answers
Answer:
the lower the amount of marbling, the higher the grade of the carcass
Explanation:
compare endocytosis and exocytosis. ( one similarity and one difference)
Answers
Answer:
Similarities include: Both are involved in transporting big molecules across the membrane. ... formed from the cell membrane which then gets into the cytoplasm. Exocytosis increases the size of the cell membrane while endo does the opposite.
which is true about both endocytosis and exocytosis? check all that apply
they use vesicles for cell transport
they require energy for cell transport
they remove wastes from the cell
they move small, fat-soluble substances
Answers
Answer: they use vesicles for cell transport and they require energy for cell transport
Explanation:
Both endocytosis and exocytosis use vesicles for cell transport, require energy for cell transport. The correct options are a and b.
What is endocytosis and exocytosis?Endocytosis is the transport of material into the cell, while exocytosis is the transport of material out of the cell.
The distinction can be seen because a vesicle forms around the molecule entering endocytosis. Exocytosis is basically the inverse of endocytosis.
Endocytosis and exocytosis both require energy in the form of adenosine triphosphate (ATP), which is used in the movement of substances into and out of the cell.
Endocytosis is classified into three types: phagocytosis, pinocytosis, and receptor-mediated endocytosis.
Exocytosis is the process by which vesicles fuse with the plasma membrane and release their contents outside of the cell. Exocytosis and endocytosis are both active transport processes.
Thus, the correct options are a and b.
For more details regarding endocytosis and exocytosis, visit:
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1 Which statement about the relationship between an organism's traits and its genes is true?
A.
An organism's genes are a direct result of its inherited traits.
B.
Genes code for proteins that determine an organism's traits.
C.
Traits code for the proteins that determine an organism's genes.
D.
Genes code for the DNA that determines an organism's traits.
2. A mutation occurs in a sequence of DNA. How could the DNA mutation affect the protein produced?
A.
The chromosomes in the protein could be changed.
B.
The protein would cause other proteins to mutate.
C.
The structure of the protein could be changed.
D.
The mutation could change every protein in the cell.
Answers
Answer:
1. The true statement about the relationship between an organism's traits and its genes is that genes encode the proteins that determine an organism's traits (option B).
2. A DNA mutation can cause the structure of the protein to be changed (option C).
Explanation:
DNA contains the genetic information necessary for the structure and function of living beings. It is a molecule that, once transcribed into mRNA, dictates the rules for protein synthesis.
1. Chromosomes are composed of a DNA molecule, whose segments form the genes that contain specific base sequences to determine a trait.
The information from the DNA is transcribed into the mRNA, which is responsible for carrying it to the cytoplasm where protein synthesis occurs. These proteins formed from the genetic code determine the different traits in living beings. So, genes encode the proteins that determine an organism's traits.
2. Since the DNA contains the information needed to transcribe it into the mRNA and for the mRNA to initiate protein synthesis, any alteration in the DNA base sequence -due to mutation- can be produced:
A transcription of the mRNA with the alteration That during mRNA translation, the codon that forms an amino acid, or that determines the stop of protein synthesis, is changed. The alteration or change, consequently, of the synthesized protein.There is a relationship between the DNA mutation and the structure of the protein being changed.
The process by which a modified stem or root of a parent plant grows offspring that remain attached is called(1 point)
vegetative reproduction.
fragmentation.
binary fission.
tuber reproduction.
Answers
Answer:
vegetative reproduction
Explanation:
～( TロT)σ believe it
The generation of a knock-out organism generally requires all the following EXCEPT ________. The generation of a knock-out organism generally requires all the following EXCEPT ________. knowledge of the sequence product embryonic stem cells knowledge of the target sequence a targeting vector
Answers
Answer:
knowledge of the sequence product
Explanation:
A gene knockout is a technique used in molecular genetics to deactivate target genes in an organism in order to study their functions by reverse genetics (i.e., gene loss). Knockouts are generated by different methods including, for example, homologous recombination or site-specific nucleases (zinc-fingers, TALENS, CRISPR/Cas9). These techniques require to know a priori the sequence of each gene to be knocked out in order to target desired mutations. In the last years, the CRISPR/Cas9 tool has gained attention to knockout genes of interest because it is a genome editing system that can be easily used for deletion or insertion of bases.
T/F Plants do not have cell membranes because they have cell walls.
A. True
B. False
Answers
Answer:
False
Explanation:
Plant cells have a cell membrane. They are eukaryotes because they have membrane bound organelles.
Hope this helped!
Consider the food chain grasshopper mouse snakes hawks. If snakes go extinct what will happen to the food chain
Answers
Answer:
This can actually cause a major problem if the number of grasshoppers were to increase out of control. They eat plants and the number of plants,which are the basis of the food chain, could severely decrease which would impact all of the levels operating above this trophic level.
Answer:
Lack of mice
Explanation:
If the grasshopper where to go extinct the mice population would decrease. Which would lead to it being harder for snakes to find food or they would begin to rely on a different food source. But the hawks would be able to find less snakes but would overall be fine.
How does weathering affect Earth's surface?
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Answer:
Weathering can wear away any exposed surface on earth over time. It can cause rough surfaces to become smooth, much like a tumbler smooths a rock. An obvious example of weathering is the change of the landscape at the sea. The tides can cause the beach to become smaller or larger.
Explanation:
Answer:
Weathering is the breaking down or dissolving of rocks and minerals on Earths surface.
Explanation:
Once a rock has been broken down, a process called erosion transports the bits of rock and minerals away. ... Weathering and erosion constantly change the rocky landscape of Earth. Weathering wears away exposed surfaces over time.
The first organisms to appear on Earth did not need?
a. oxygen.
cells.
b. nitrogen
d chemicals
C
Please select the best answer from the choices provided
Ο Α
B
C
Answers
D
explanation:
Answer:
ANS IS DDDDDDDDDDDDDDDDDDDDDDDDDDDDDdd
Explanation:
The creation of different breeds of dog by humans is an example of...
A) stabilizing selection
B) disruptive selection
C) artificial selection
D) sexual selection
Answers
Answer:
I believe it is artificial selection
Explanation:
i learned about this a little while ago lol
Select the correct answer.
Which statement about the scientific method is true?
A.
Opinions can be scientifically tested.
B.
Scientific theories are tentative and change as new data emerges.
C.
Hypotheses can be proved through experimentation.
D.
Facts can be scientifically tested.
Answers
it's D but I might be wrong
Answer:
C
Explanation:
In science, a hypothesis is an idea or explanation that you then test through study and experimentation. Outside science, a theory or guess can also be called a hypothesis.
Many scientists start with this as a need you make a prediction and base it around your experiment to prove your correct.
Hope this helped
(It could also be D but I'm more positive on C)
Which describes an altocumulus cloud?
a.
high, feathery cloud
c.
low storm cloud
b.
puffy mid-level cloud
d.
high cloud made of ice crystals
Please select the best answer from the choices provided
A
B
C
D
Answers
Answer:
Puffy mid level-cloud.
Explanation:
So the answer is B. Got it right on edge 2021 Stay safe!!
Answer:
the answer is B.)
Explanation:
i did the quiz a week ago-
NEED HELP RLLY BAD!!
What does glucagon do for the body
1. tells the body to release insulin to lower blood glucose levels
2. tells the body to release glycogen to increase blood glucose levels
3. tells the body to release insulin to increase blood glucose levels
4. tells the body to release glycogen to decrease blood glucose levels
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13. Keep a
to help you identify trends in your fitness habits that are particularly effective. (1 point)
grade book
sharp memory
video blog
fitness journal
Answers
It’s correct
When an object is not in motion, it can still have a form of energy. What form of energy does an object have due to its distance from Earth?
Answers
Answer:
Gravitational energy
Explanation:
An object's height above the ground (Earth) gives it gravitational energy.
Answer:
gravitational potential energy
Explanation:
correct on edge
Will give brainliest please help me.
Answers
Answer:
It looks like it could be the first one or last. But I'm pretty sure it's the last one.
According to the chart above, the largest percentage of a person’s carbon footprint comes from:
a.
Electricity
c.
Recreation and Leisure
b.
Food and Drink
d.
Gas, Oil and Coal
Answers
Answer:
D
Explanation:
D has the highest percentage at 15%. It is followed by C, at 14%.
is your name darel ibyibewbyqybyubycbywb
Answers
Answer:
hello i don't think my name is darel
Explanation: