Answer:
D.
Explanation:
I looked it up and the first thing I saw was Crabs. I hope this answer helps. :)
By continuously maintaining a state of disequilibrium between the concentrations of Na+ and K+, the sodium-potassium pump regulates the membrane potential of the neuron. He's working with the membranes of crab nerve cells. Thus, option D is correct.
What sodium potassium pump do?Na-k pump controls the levels of Na+ and K+ throughout the cell membrane.
The concentrations of Na+ and K+ are higher on the inside and outside the cell, respectively, when the cell is at resting membrane potential.
When various ions pass across the neuron membrane, action potentials are produced. Sodium channels first open as a result of a stimulation.
Sodium ions rush into the neuron because there are far more of them on the outside, and because the inside of the neuron is negative in comparison to the outside.
Therefore, crab nerve cells use to study the sodium potassium pump.
Learn more about sodium potassium pump here:
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Can someone help with these two questions? Its due in an hour.
Answer:
1. 90 units
2. third level consumers
6H2O has _ hydrogens total.
Answer:
12
Explanation:
6H2O or hexahydrate is a group of 6 water molecules or 6 molecules of dihydrogen monoxide. When looking for the total particular number of elements in a substance, find the subscript or smaller number in front of that atom, and look out for the coefficient or bigger number of the whole substance, and multiply that coefficient by the subscript to find the total atoms of that element.
Since there are 2 hydrogen's in each molecule of water, 6 molecules would make that a total of 12 hydrogen's for 6 molecules of water.
Photosynthetic organisms living deep in the water will have pigments that can absorb
A. orange light
B. blue light
C. yellow light
D. red light
Answer:
Light passes through air pretty freely, but gets absorbed and refracted a lot more in water.
Explanation:
Which will have the greatest impact on the effects of disease in a population?
A. climate
B. nutrition
C. location of habitat
D. number of organisms within a population
nutrition is the answer bcz without nutrition the diseases will effect more in a population
How does a logistic growth curve differ from an exponential growth curve?
Answer:
A logistic growth curve is S-shaped. Populations that have a logistic growth curve will experience exponential growth until their carrying capacity is reached, at which point their growth begins to level. An exponential growth curve is J-shaped.
Explanation:
Answer:
Explanation:
A logistic growth curve is S-shaped. Populations that have a logistic growth curve will experience exponential growth until their carrying capacity is reached, at which point their growth begins to level. An exponential growth curve is J-shaped.
Which microscope is often used to view metal surfaces?
scanning electron microscope
scanning tunneling microscope
transmission electron microscope
compound light microscope
Answer:
scanning tunneling microscope
Explanation:
Microscopes used to view metal surfaces.
A cell membrane is a rigid structure that can prevent a cell from bursting due to increased internal water pressure.
True
False
Answer:
False
Explanation:
A cell membrane is not rigid a cell wall is rigid.
The mass of Jupiter, compared to the Earth, is approximately:
3 times greater
1,300 times greater
300 times greater
Answer: The answer is 300,
Explanation:
Jupiter is somewhere around 318 times larger then the Earth.
can someone confirm if this is the right sequence?
Answer:
Confirmed
Explanation:
In a chemical reaction, which aspect of the reactants changes?(1 point)
A. atoms
B. mass
C. nuclei
D. total mass
chemical reaction- The process by which atoms of one or more reactants are rearranged to form different products is called chemical reaction.
Reactants - reactants are the starting materials that undergo changes during a chemical reactionProducts- a product is a substance that is formed as the result of a chemical reaction.as example a figure is provided below.
so the answer is Atoms of the reactants which changes in a chemical reaction.
What are 6 abiotic limiting factors
Answer:Physical factors or abiotic factors include temperature, water availability, oxygen, salinity, light, food and nutrients; biological factors or biotic factors, involve interactions between organisms such as predation, competition, parasitism and herbivory.
Explanation: read the answer!
Answer:
Abiotic limiting factors: wind, climate, weather(Ex: rainfall), soil composition, natural disasters, sunlight
How are water molecules arranged in a liquid?
A. They are far apart and stay in one place.
B. They are close together and stay in one place.
C. They are far apart and move past each other.
D. They are close together and move past each
other.
Answer:
Explanation:
option D is correct
Ans) They are close together and move past each other.
Therefore option D is correct.
all of the following will take place during the first trimester except?
a. heartbeat can be detected
b. external sex organs show the sex of the baby
c. lenses of the eye appear
d. wake and sleep cycles become regular
Answer:
b
Explanation:
Match the following vocabulary words.
phalanges
1. knee bone or kneecap
2. bones in fingers and toes
3. inside bone in the lower
part of the arm
ulna
patella
Answer:
1) knee bone or kneecap=part of arm
2) bones in finger and toes =patella
3)inside bone in the lower=ulna
Nucleic acid segments and are nucleic acids that can store biological information based on the sequence of their nucleotide monomers. Figure 1 shows a short segment of each of the two types of nucleic acids. Which of the following best describes a structural difference between and ?
Full Question (figure attached):
Nucleic acid segments and ar
DNA and RNA are nucleic acids that can store biological information based on the sequence of their nucleotide monomers. Figure 1 shows a short segment of each of the two types of nucleic acids. Which of the following best describes a structural difference between DNA and RNA?
A. DNA contains four types of nitrogenous bases, whereas RNA contains only two types of nitrogenous bases
B. The backbone of DNA contains deoxyibose, whereas the backbon e of RNA contains ribose.
C. A DNA molecule is composed of two parallel strands with the same 5'-3' directionality, whereas an RNA molecule is composed of only one strand
D. Phosphate groups provide rigidity to DNA, but RNA is flexible and contains no phosphate groups
Answer:
B. The backbone of DNA contains deoxyibose, whereas the backbon e of RNA contains ribose.
Explanation:
A. DNA contains four types of nitrogenous bases, whereas RNA contains only two types of nitrogenous bases - this is false. Both contain four types of nitrogenous bases. DNA contains cytosine, guanine, adenosine and thymine, whereas RNA contains cytosine, guanine, adenine, and uracil.
B. The backbone of DNA contains deoxyibose, whereas the backbon e of RNA contains ribose. - this is true, each nucleotide in DNA contains a deoxyribose sugar, whereas each nucleotide in RNA contains a ribose sugar
C. A DNA molecule is composed of two parallel strands with the same 5'-3' directionality, whereas an RNA molecule is composed of only one strand - this is false. DNA is composed of 2 strands, and RNA is composed of one, but the DNA strands run in an anti-parallel configuration (one runs 5'-3', the other runs 3'-5')
D. Phosphate groups provide rigidity to DNA, but RNA is flexible and contains no phosphate groups - this is false, both DNA and RNA nucleotides contain phosphate groups
Ben uses a reusable storage bag to carry snacks to school. Debbie uses a similar bag to store pencils so her backpack doesn’t get dirty. Which cell organelle performs a similar function?
A.
cell membrane
B.
Golgi body
C.
lysosome
D.
ribosome
E.
vacuole
Answer:
A Cell Membrane
Explanation:
the cell membrane works as a way to protect the cell but it also works as a way to let things in and out of it
I need help with this question on Study island I need help because i am stupid and don´t pay attention in class-
Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?
A.
slightly basic
B.
strongly basic
C.
strongly acidic
D.
slightly acidic
Answer:
A
Explanation:
values higher than pH7 is count as basic
A scientist concludes that genetic inheritance of a mutated (changed) gene, such as a gene change that creates different-colored organisms in a population, is more beneficial to an organism over time and contributes to biological fitness. Discuss why a scientist would make that claim.
Answer:
If there is a change in the gene, this can further create a new generation of organisms with this change. With certain changes, it enables organisms to survive in other conditions.
Pls mark as brainliest
Inherited traits can be dominant, recessive or neither.
True
False
ANSWER FAST PLS!!
Answer:
True
Explanation:
We are learning about this in science this week and im pretty sure this is true.
Pls answer it guy.. It is in the picture tap it to see the full picture
__________________________________________________________
6- Parasitism; is Symbiotic Relationship in which one the parasite, lives on or inside another organism which is called the host causing it some harm. Parasite is benefitted and Host is harmed
7- Commensalism; is an association between two organisms in which one benefits and the other derives neither benefit nor harm.
8- Predator; is an animal that eats other animals
9- Mutualism; is a relationship between two organism where both of them are benefitted
10- Prey; gets eaten by the predator
11- Symbiosis; is A long term relationship
_____________________________________Best Regards,
"Borz"
How is HIV able to evade the immune system and keep destroying T cells?
Need help with this check smart people answer this fast
Answer:
her arms are puffy red and swollen
Explanation:
These are physical signs (symptoms) that show that the girl may have an allergic reaction. Hope this helps
Suppose you are visiting the equator. It is noon. The Sun is at its highest point in the sky for the day, which is directly over your head. You call a friend on the phone, and she says it is also noon where she is but the Sun is not directly overhead at that location and time. It is a little lower in the sky for her. Compare the longitude and latitude where you are with the longitude and latitude where your friend is. Are they alike or different? How do you know?
Answer:
Latitude on the equator is 0 degrees and longitude is 180 degrees.
If this helps, please give me brainliest.
which process produces large amounts of energy in a star by combining lighter elements into a heavier element
Answer:
Fusion
Explanation:
A star's energy comes from the combining of light elements into heavier elements in a process known as fusion, or "nuclear burning". It is generally believed that most of the elements in the universe heavier than helium are created, or synthesized, in stars when lighter nuclei fuse to make heavier nuclei.
Answer:
Nuclear fusion
Explanation:
which best describes a gene? 1. the short arm of a a chromosome 2. tightly coiled strands of DNA 3. the center of a chromosome 4. a segment of chromosomal DNA
Answer:
It's D. A segment of chromosomal DNA.
Explanation:
The functional and the physical element of genetics are called genes. They get inherited in the form of pairs from the parents of the offspring.
The genes are best described as:
Option 4. A segment of chromosomal DNA.
The statements can be explained as:
The short arm of the chromosomes is called a P-arm found on the chromosomes either the above or the below section of the centromere.Chromosomes are the tightly bonded thread-like configurations of DNA surrounding the histone protein.The centromere is in the middle of the chromosome that holds the two sister chromatids of the chromosomes.Genes are the element of the DNA that codes for proteins and determine the functions of the cells and attributes.Therefore, the correct option is D.
To learn more about genes follow the link:
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Warm-Up: What does it mean to be a prokaryotic cell? What
does it mean to be a Eukaryotic Cell? Which one came first?
(Think about the root words)
Answer:
eukrayotic cell l guess
Explanation:
A prokaryotic cell is a simple, single-celled (unicellular) organism that lacks a nucleus, or any other membrane-bound organelle. We will shortly come to see that this is significantly different in eukaryotes. Prokaryotic DNA is found in the central part of the cell: a darkened region called the nucleoid (Figure 1).
Unlike Archaea and eukaryotes, bacteria have a cell wall made of peptidoglycan, comprised of sugars and amino acids, and many have a polysaccharide capsule (Figure 1). The cell wall acts as an extra layer of protection, helps the cell maintain its shape, and prevents dehydration. The capsule enables the cell to attach to surfaces in its environment. Some prokaryotes have flagella, pili, or fimbriae. Flagella are used for locomotion, while most pili are used to exchange genetic material during a type of reproduction called conjugation.
Eukaryotic Cells
In nature, the relationship between form and function is apparent at all levels, including the level of the cell, and this will become clear as we explore eukaryotic cells. The principle “form follows function” is found in many contexts. It means that, in general, one can deduce the function of a structure by looking at its form, because the two are matched. For example, birds and fish have streamlined bodies that allow them to move quickly through the medium in which they live, be it air or water.
A eukaryotic cell is a cell that has a membrane-bound nucleus and other membrane-bound compartments or sacs, called organelles, which have specialized functions. The word eukaryotic means “true kernel” or “true nucleus,” alluding to the presence of the membrane-bound nucleus in these cells. The word “organelle” means “little organ,” and, as we learned earlier, organelles have specialized cellular functions, just as the organs of your body have specialized functions
What is the meaning of Gago ka?
No stupid answer or else I report you!!!!!
Gago ka!!
Gago is a descendant of the Portuguese word gago and gaguejar, meaning "stupid", "foolish" or "ignorant".
Answer:
iT means not intelligent it wont let me say the other word
Explanation: no need to explain
what is an example of direct impact on mining
Answer: The key direct impact of mining on forest ecosystems is the removal of vegetation and canopy cover. Indirect impacts include road-building and pipeline development, which may result in habitat fragmentation and increased access to remote areas.
What would happen to the concentrations of
Pyruvate, NADH and intermembrane H+ if the ETC
stopped working?
Answer:
Stay the Same, Increase, Decrease
Explanation:
Glycolysis produces pyruvate which is functioning normally if only the ETC (electron transport) stopped working because the ETC happens AFTER glycolysis, hence pyruvate is being produced and used at a normal rate (no change). NADH is produced in the cellular respiration stage PRIOR to the ETC so it is being created at a normal (or average) rate, however, it is not being used and split properly (meaning, not enough) in the ETC stage hence it's concentration increases. H+ decreases because it cannot be made if the prior step(s) were not complete.
What would happen to the concentrations of pyruvate, NADH and intermembrane H+ if the ETC stopped working are:
Pyruvate would stay the same and not be affected.that is it would remain the same.NADH would increaseH+ in the intermembrane would decrease.The concentration of the Pyruvate would not be affected If ETC stopped working and so this will make NADH would increase. Due to the fact that there is no electrons been transported down the chain, so therefore, no H+ would be moved and this in turn would make the concentration of H+ in the intermembrane space to reduce.Conclusively, we can therefore say that what would happen to the concentrations of pyruvate, NADH and intermembrane H+ if the ETC stopped working are:
Pyruvate would stay the same and not be affected.that is it would remain the same.NADH would increaseH+ in the intermembrane would decrease.Learn more from
https://brainly.com/question/19329260
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