Can someone please help me with these 2 questions? ILL GIVE BRAINLIEST

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

Answer:

Light passes through air pretty freely, but gets absorbed and refracted a lot more in water.

Explanation:

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

chemical reaction- The process by which atoms of one or more reactants are rearranged to form different products is called chemical reaction.

         as example a figure is provided below.

so the answer is Atoms of the reactants which changes in a chemical reaction.

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

Answer: The answer is 300,

Explanation:

Jupiter is somewhere around 318 times larger then the Earth.

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.

Answer:

scanning tunneling microscope

Explanation:

Microscopes used to view metal surfaces.

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.

Answer:

Explanation:

option D is correct

Ans) They are close together and move past each other.

Therefore option D is correct.

Answer:

Confirmed

Explanation:

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.

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:

https://brainly.com/question/8507057

#SPJ2

Answer:

False

Explanation:

A cell membrane is not rigid a cell wall is rigid.

nutrition is the answer bcz without nutrition the diseases will effect more in a population

The mineralized remains of an animal or plant. In short fossil.

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:

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

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.

Answer:

Latitude on the equator is 0 degrees and longitude is 180 degrees.

If this helps, please give me brainliest.

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

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  

Answer:

1) knee bone or kneecap=part of arm

2) bones in finger and toes =patella

3)inside bone in the lower=ulna

Answer:

1. 90 units

2. third level consumers

Answer:

you should just change out the bs for ws. i used bs so it would be easier to see since my ws look the same capital or lowercase

Answer:

True

Explanation:

We are learning about this in science this week and im pretty sure this is true.

__________________________________________________________

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"

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

Answer:

A

Explanation:

values higher than pH7 is count as basic