Alexis is using models of the cell membrane to compare the types of cellular transport. One
model shows a molecule entering through a protein pump. Which ope of cell transport is
being modeled?
A
diffusion because protein pumps are needed to move substances from a higher
concentration to a lower concentration
8
endocytosis, because protein pumps transport substances that are too large to
pass through the cell membrane
active transport, because protein pumps are needed to move substances against a
concentration difference
D
osmosis, because protein pumps allow water to cross the cell membrane
Answers
Answer:
C. active transport, because protein pumps are needed to move substances against a concentration difference
Explanation:
There are two major types of transport in living cells namely: passive transport and active transport. The passive transport moves molecules down a concentration gradient and hence, do not need energy (ATP) to occur. However, on the other hand, ACTIVE TRANSPORT moves substances against their concentration gradient, thus, require energy input.
Active transport makes use of PROTEIN PUMPS to achieve this process. Hence, in this case where Alexis is using models of the cell membrane to compare the types of cellular transport. The model that shows a molecule entering through a protein pump is modelling ACTIVE TRANSPORT.
Related Questions
Why do you think scientists further classified vertebrates into smaller categories
Answers
Can cells leave g0?
A. Yes
B. Very rarely, but yes when there is a injury on a certain cell
C. No
please help I need the help:)
Answers
How do the structures of the paramecium help it survive? Give specific examples.
Answers
Mitosis is an important process for maintaining homeostasis in organisms. Which of the
statements below does NOT reflect a function of mitosis.
A. Contributing to the growth of organisms.
B. Responding to the loss of cells due to natural cell death.
C. O Producing gametes for sexual reproductive purposes.
D. Being the process for asexual reproduction in single celled organisms.
Answers
Answer:
C. Producing gametes for sexual reproductive purposes
Answer:
C. Producing gametes for sexual reproductive purposes.
what are two major roles that protists play in aquatic food chains
Answers
Answer:
Explanation:
Photosynthetic protists serve as producers of nutrition for other organisms.
Protists like zooxanthellae have a symbiotic relationship with coral reefs; the protists act as a food source for coral and the coral provides shelter and compounds for photosynthesis for the protists.
What is the role of an enzyme in a reaction with the reaction ? would the reaction happen without an enzyme?
Answers
Answer:
Enzymes are not used up in a chemical reaction. Usually, the enzyme will “reset” and be ready to use in another reaction. This is due to the fact that enzymes are proteins, and their shape is what they use in a chemical reaction.
Explanation:
Enzymes serve a similar purpose for chemical reactions in an organism's body, which is to lower the amount of "activation energy" needed for a particular chemical reaction to occur. Without enzymes, many chemical reactions would occur at a much slower rate because the amount of activation energy required would be far greater.
A scientific theory
A)is like a guess
B)can never be disproven
C)has not been disproven, but could be
D)has been proven 100%
Answers
Answer:
the answer should be c
Explanation:
Answer:
it is c.
Explanation:
because it has never been disproven i know alot because in science I am studing it
NEED ASAP WILL GIVE 40 POINTS!!!
What type of conditions might effect crossing over in Sordaria?
Answers
Answer:
To observe crossing over in Sordaria, one must make hybrids between wild-type and mutant strains of Sordaria. ... When mycelia of these two different strains come together and undergo meiosis and then mitosis, the asci that develop will contain four black ascospores and four tan ascospores.
Explanation:
True or false: the age of invertebrates in the Cenozoic era
Answers
Answer:
True
Explanation:
Answer:
true got it right
Explanation:
Which type of mutation results in a frameshift
mutation?
substitution
insertion
deletion
point mutation
Answers
Answer:
Insertion and deletion result in a frameshift mutation. Frameshift mutations caused by "indel" mutations, meaning insertion or deletion mutations. These mutations shift the way the DNA is read. A frameshift mutation can throw off all of the nucleotide that follow in a DNA sequence, making them particularly likely to lead to significant consequences.
Answe me if you can, thank you
Answers
Chloroplasts are found in Eukaryotic Autotrophs i.e. those who can make their own food with the help of sunlight using carbon dioxide and water. Eukaryotes are Eukaryotes are organisms whose cells have a nucleus enclosed within a nuclear envelope.
_____________________________________Example:The Example of Eukaryotic Autotrophs are Plants and Algae. They are the producers in the food chain also the main source of the oxygen, as they use Carbon Dioxide for a glucose's carbon structure and releases oxygen as By-Product.
_____________________________________Why are they green?Chloroplasts get their green color by the presence of chlorophyll, which is the main site for the process of photosynthesis. It is a green photosynthetic pigment found in plants, algae, and cyanobacteria. Chlorophyll absorbs mostly in the blue and all the other colors to the lesser extent while reflecting green. They are present in leaves, and as the chlorophyll reflect green color, Thus the leaves look green to us.
_____________________________________Best Regards,'Borz'Root systems are classified as fibrous root systems and taproot systems.
Which property distinguishes the two types of root systems from each other?
A)
the method of water absorption
B)
the branching pattern of the roots
C)
the presence of xylem and phloem
D)
the growth rate of the roots
Answers
Answer:
B) the branching pattern of the roots
Explanation:
Plant roots function as anchors, food storage and aid in the uptake of water and minerals- other modifications include gas exchange and chemical signaling.
Root systems are mainly classified as taproots, usually found in dicots or fibrous roots found in monocots - some plants are a varying combination of the two systems. While tap roots consist of a larger, vertical main root surrounded by smaller lateral roots, fibrous roots are typically a dense network of roots that grow near the surface of the soil.
Taproots are thought to be more common in plants inhabiting regions experiencing water scarcity, while fibrous roots are thought to grow in more lush, water-abundant regions.
Examples of these roots systems include...
taproots: dandelions, carrots, turnipsfibrous roots: grasses, cornwhat causes a seismic waves
Answers
Answer:
Seismic waves are the waves of energy caused by the sudden breaking of rock within the earth or an explosion. They are the energy that travels through the earth and is recorded on seismographs. Earthquakes radiate seismic energy as both body and surface waves.
Explanation:
Answer:
caused by the sudden breaking of rock within the earth of an explosion.
Explanation:
dont judge me if im wrong
15. The predator -prey relationship is a common type of A. commensalisms. B. animal interaction .C. plant interaction.D. mutualism .
Answers
Answer:
B. animal interaction
Explanation:
Answer:
Animal interaction
Explanation:
balls
Can someone help with this pls (8th grade science)
Answers
Answer:
B to C
Explanation:
acceleration mean speeding up so that means it is B to C because that line is going down not up.
Explanation:
Its b because it's going down not up
Which of the following is the best evidence to support the belief that air is matter?
A you can't see air
B you can feel air blown from a fan
с air weighs nothing and has no mass
D air is what we breathe
Answers
Answer:
Explanation:Its C
We can feel air blowing from a fan because air is matter. It has its volume and mass. Thus, option B is correct.
What is the matter?Something that has volume and mass is called matter, which occupies space and can be weighed. The matter is affected by gravity due to its mass. There are generally three states of matter and that are solid, liquid, and gas. Everything you can see is matter. It is made up of very fine particles and we can not see these particles by the eye.
Even if air can not be seen but it has a volume and it can be weighed. When we blow a balloon, air goes inside the balloon, and its size increases because air has, it takes up space and we can weigh the balloon.
We can feel wind because air is matter. Therefore, the correct option is B.
Learn more about the matter, here:
https://brainly.com/question/13288978
#SPJ5
Which is an effect of lower levels of solar radiation striking Earth?
Answers
Answer:
B) decreased rates of photosynthesis
Explanation:
Plants, phytoplankton, algae, and other microorganisms photosynthesize using energy in the form of solar radiation. Photosynthesis is a chemical process that's integral to these organisms, which are called producers.
They combine light energy from solar water and carbon dioxide, in a complex process that produces chemical energy in the form of glucose.
[tex]6CO_{2} + 6H_{2} O + light ---> C_{6}H_{12}O_{6}[/tex][tex]+6O_{2}[/tex]
Photosynthesis is a rate-limited reaction; it depends on various factors including carbon dioxide availability and light intensity. When light is limited, the rate of photosynthesis decreases due to its slowing effect on the light-dependent reaction in photosynthesis, occurring in the chlorophyll.
All organisms must have water for survival. If a drought causes the water in an ecosystem to become scares the organisms in this
ecosystem will not have as much water accessible to them
A decrease in the water available to an organism for cellular processes will most likely result in
CA
a decrease in optimal temperature ranges
e.
an increase in activity level
C, a decrease in metabolic activity
an increase in metabolic activity
Answers
Answer:
C, a decrease in metabolic activity
Explanation:
Water is an essential compound needed for the survival of all organisms in nature.
The bulk of most organisms is made up of water. Most importantly, water is integral part of cellular metabolic processes.
In the time of drought, metabolic activities will reduce. Organisms will tend to be inactive so as to conserve the little water they might have access to. This is an important adaption for organisms.What are some characteristics that protists and fungi both have that make them eukaryotes?
Answers
Answer:
They have a nucleus and other membrane bound organelles.
Explanation:
hoped this helped :)
The characteristics that protists and fungi both have that make them eukaryotes is the possession of a membrane bound nucleus and other organelles.
EUKARYOTES:
Eukaryotic cells are cells that possess a membrane-bound nucleus to house their genetic material (DNA). Eukaryotes also possess other membrane bound organelles like mitochondria, golgi apparatus etc. This feature particularly differentiates them from prokaryotic cells. Eukaryotic organisms include plants, animals, fungi, some protists etc. Therefore, it can be said that the possession of a membrane bound nucleus and other organelles is the characteristics that makes fungi and protists be considered eukaryotes.Learn more: https://brainly.com/question/21196976?referrer=searchResults
Anatomy: If an agonist produces flexion, the primary action of the antagonist will be...
A. Extension
B. Abduction
C. Pronation
D. Adduction
In need of help!!!!
Answers
Answer:
If an agonist muscle produces a flexion, the primary action of the antagonist muscle will be extension.
Explanation:
Muscles are the organs of the musculoskeletal system that, through their contraction and relaxation, allow body movements.
Due to the location of each muscle in relation to the bone and joint, they can perform diverse movements, there being the so-called agonist and antagonist muscles for each movement.
If an agonist muscle makes a movement, the antagonist muscle or muscles will make the opposite movement, so the extension corresponds to the antagonistic action of the flexion.
The other options are not correct because:
B y D. Abduction and adduction are antagonistic movements, not related to flexion.
C. The antagonistic movement of pronation is supination.
What structure is the least complex
Answers
Answer:
In order, from least complex to most complex:
cells.
tissues.
organs.
organ systems.
organism.
Explanation:
Placing the egg in which fluid would give a different result?
Answers
Answer:
Orange juice and vinegar both contain acids which react with the calcium carbonate in the eggs to produce carbon dioxide gas. This is why the eggs fizz in those liquids. Over time, this reaction has the effect of destroying the egg shells and leaving behind the inside of the egg.
Explanation:
Are fish gills a Physiological adaptation or a Structural Adaptation?
Answers
Answer:
yes
Explanation:
A group of scientists recently proposed the idea that beets should replace salt for melting winter ice. The scientists pointed out that because beets grow underground, they continue to grow in freezing conditions. Thus, they hypothesized, an extract of beet roots could melt ice on roads in winter. Make a prediction.
Answers
Answer:
Extract of beet roots has the capacity to melt ice
Explanation:
A prediction in research is a tentative statement that can be proven or disproven using an experiment. Predictions are otherwise referred to as hypotheses.
In the illustration, the prediction would be that the extract of beet roots has the ability to melt ice. After the experiment, the prediction would either be proven right or otherwise.
Yeasts reproduce by budding. During budding, a yeast cell splits into two cells. Then the two cells split, making four cells. Determine how many yeast cells would result from 5 buddings.
Show your work.
Answers
Answer:
20 yeast cells would be formed.
Explanation:
You have five cells. Each of those five cells split into two, so now we have 10 cells. Think about it like multiplication, so 5 times 2 = 10. Now we have 10 cells. We know that they split even further, so now those 10 cells become 20 cells. Here is a more simple explanation:
5 cells:
* * * * *
Now those five cells split up into 2:
* * * * *
* * * * * * * * * *
Then those new ten cells split into four:
* * * * *
* * * * * * * * * *
* * * * * * * * * * * * * * * * * * * *
Add 4+4+4+4+4 = 20 or 4 times 5 which would also equal 20.
And that is the answer, hope that helped :)
asteroid, meteorite, craton, Canadian shield, differentiation, microcontinent, Precambrian shield, banded-iron formation, stromatolite, Ediacaran Biota
1)fossils of various multicellular organisms from about 630 Mya
2)the top of a craton exposed at Earth's surface
3)Metallic or silica rich object that bombard early Earth, generating heat energy
4)a small fragment of an orbiting body that has fallen to Earth; generating heat; does not completely burn up in Earth's atmosphere and strikes Earth's surface; sometimes causing an impact crater
5)a small fragment of granite rich crust formed during the Archean
6)name given to the Precambrian shield in North America because much of it is exposed in Canada
7)Alternating bands of iron oxide and chart; and cherty; an iron-poor sediment rock
8)continental core formed from Archean or Proterozoic microcontinents; deepest and most stable part of a continent
9)process in which a planet becomes internally zoned, with the heavy materials inking toward the center and the lighter materials accumulating near its surface
10)large mat of mound composed of billions of photosynthesizing cyanobacteria that dominated shallow oceans during the Proterozonic
Answers
Answer:
what's your question? I can help If I know what your looking for
At 1:00 a.m., someone breaks a window in the back of a store and robs the safe. On the way out, the thief cuts himself (or herself) on a piece of the broken glass. You are a forensic detective called to the scene. You test the sample of blood left behind by the thief. It is O-. While you are there, police bring in a suspect with a cut in the forearm who was arrested just three blocks from the store. You take a sample of the suspect’s blood and mix it with anti-A. You immediately know that the suspect is not the person who cut himself on the broken glass in the store. How do you know this?
2. Suppose the same suspect's blood does not agglutinate when tested with anti-A or anti-B, but does agglutinate when tested with anti-Rh. Would this connect the suspect with the crime scene? Explain
3. Tom and Jane participate in a Red Cross blood drive. Both are first-time donors. As part of the screening.
A. What ABO antibody is found in Tom's blood?
B. What ABO antigens are found in Janes blood?
4. The same Tom and Jane's blood donations are sent to a processing center where the blood cells from the plasma in each of the two samples. The separated cells and plasmas are then sent to a hospital. A blood researcher wishes to use Tom's blood in an attempt to extract and identify the A antigen. Should she attempt the extraction process on his blood cells or on his plasma?
Answers
Answer:
Explanation:
When a blood group matches with an antibody it agglutinate this indicate an agreement furthermore when they do not agglutinate it denotes they aint compatible.
The suspect's whose blood is unknown on mixing with anti-A blood agglutinate and is immediately ruled out this is because the criminal who is 0- should agglutinate with anti-B.
When the suspect blood agglutinate on testing with anti-Rh it indicates that the suspect is O+ and not O-
Plasma are mostly filled with water blood samples should be extracted from blood cell.
A blood test is done by using chemicals that coagulate with the blood sample if it is positive for the test.
1. The suspect was not the same person was determined by using the blood test.
When the sample from the suspect is taken and mixed with the Anti A it would have got coagulated.For a blood sample to be O⁻ it should not agglutinate with either Anti A or B antibodies as the blood group O does not contain any antigen on its cell surface.2. If the blood sample does not agglutinate for both the Anti A and Anti B antibodies it indicates the blood type to be O.
But if agglutinates with the anti-Rh that means that it is an O⁺ blood group and not O⁻. Therefore, it cannot be connected with the crime scene.3. A. Tom's blood group is A+ the ABO antibody can be determined by:
According to the ABO blood group system, two types of antibodies are present antibody A and B in the plasma while two types of antigens anti - A and B are found in the blood cells. Tom have blood group A+ that means that he has antigen A in his RBC while antibody B is in his plasma. Therefore, Tom has antibody B in his blood as he is A+.B. Jane's blood group is AB+ which means that Jane has both the antigen A and B in her blood cells while there are no antibodies in her plasma.
4. The process of the extraction of antigen A from Tom's sample should be done from the blood cells as RBC contains the antigen while plasma is of no use because they contain the antibodies.
To learn more about the blood group systems follow the link:
https://brainly.com/question/15177700
what is reproduction
Answers
Answer:
1st definition the process of duplicating something.
2nd definition The process by which an organism produces its offspring is called reproduction.
Answer:
To make a copy or to duplicate something
Explanation:
Hope this helps!
JM0206
aka old account
Jade0206
Which is it?? DNA, RNA, or Both??
1. Single-Stranded
2. Double-Stranded
3. Nitrogen bases
4. Thymine
5. Uracil
6. Double Helix
Answers
2. DNA is double stranded
3. Nitrogenous bases can be found in both RNA and DNA.
4. Thymine is found in DNA
5. Uracil is found in RNA
6. DNA has a double helix structure
4. What is the name of the membrane in blood cells that allows for certain
substances to pass through it, but not others? *
Cell wall.
Semipermeable membrane.
Cell membrane.
plasma membrane
Answers
Answer:
It is Plasma Membranes.
Answer: Plasma membrane
Explanation:
Can I be Brainliest bc i was first