Whether a molecule can cross the plasma membrane depends upon D. All of the above
Which molecule can pass the plasma membrane?
Small nonpolar molecules, consisting of O2 and CO2, are soluble in the lipid bilayer and consequently can effectively cross cell membranes. Small uncharged polar molecules, which include H2O, can also diffuse thru membranes, however large uncharged polar molecules, inclusive of glucose, cannot.
How do molecules pass across the plasma membrane?Explanation: Molecules pass throughout the plasma/mobile membrane through diffusion. If they're not small sufficient, they need to break down by means of other substances, which include enzymes, which can be biological catalysts. If they are small enough, usually, the easiest way for them to move is through diffusion.
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what is the molar mass of MgF2?
A.24.3g
B.19.0g
C43.3g
D.62.3g
Answer:
62.3018 g
Explanation:
I also had this question on my quiz
Which option describes a similarity between scientific laws and scientific theories? 1.Both can change in light of new evidence. 2.Both explain how a phenomenon works. 3.Both are purely observations of nature. 4.Both are suggested explanations that are starting points.
Answer:
1.Both can change in light of new evidence
2.Both explain how a phenomenon works
Explanation:
Law and theory can be defined to be part of the nature of scientific knowledge. A scientific theory is a well-established explanation for observations of the natural world which can be verified by applying the scientific method, while a scientific law is a statement obtained from repeated experimental and/or observational procedures to describe and/or predict natural phenomena. Scientific theories can change when researchers discover new lines of evidence, while scientific laws also change based on new empirical evidence.
Amoeba Sisters Video Recap: Enzymes
Can you help me?
How would the seasonal paths of the Sun change for a location that is more North of this latitude?
Answer:
At the North Pole, the sun is above the horizon for six straight months (March through September), spinning around in horizontal circles, reaching a maximum height of 23.5° above the horizon at the June solstice. As you travel southward in the northern hemisphere, the noon sun gets higher and higher.
Explanation:
Add the north pole the sun is above the horizontal for six straight months
Cell membrane questions
Please help will give brainlist
Answer:
IM DEAD BUT ALIVE BUT IM DEAD
Explanation:
Answer:
false
true
false
true
false
true
false
true
false
true
what do plants use nutrients for?
Answer:
they help create new cells
Which base sequence is complementary to this strand of DNA?
Answer:
I believe the answer is D
Which of the following is the correct sequence for the pollen tube to eventually reach the egg in a flowering plant?
a. stigma, ovary, ovule, style
b. style, stigma, ovary, ovule
c. stigma, style, ovary, ovule
d. ovule, ovary, style, stigma
Answer:
b
Explanation:
.......................
Answer:
The pollen tube eventually reaches the egg in a flowering plant by passing through the stigma, style, ovary, and ovule.
Explanation:
Hope this helps!
Why is the world's loss of biodiversity a source of concern?
O a. Humans depend upon other organisms for food and oxygen
b. Species have value to humans, both monetary and because we like them
c. Tourism depends on the preservation of certain animal species
d. Both (a) and (b)
Answer:
a) Humans depend upon other organisms for food and oxygen
Explanation:
Biodiversity refers to the richness in the species of organisms on Earth i.e the variety of biological organisms on the Earth. The importance of biodiversity cannot be overemphasized because of our dependence on the sustainability of biodiversity in our ecosystems.
The loss of biodiversity, which is becoming rampant by the day, is a major concern to us because we humans depend upon other organisms for food and oxygen. Humans are strictly heterotrophic and hence are reliant on variety of organisms for food. Plants also release oxygen gas via their photosynthetic process, which is key to our survival as a population.
The study of the environment is called ecology.
The correct answer is A.
The loss of animals and plants in the ecosystem is called loss of biodiversity. These reasons for the loss is as follows:-
Overexploitation.Invasion of alien speciesGreedHabitat lossThe loss of these species has a high impact on the ecosystem as these have an important function to form forests.
All the species are dependent on each other.
Hence, the correct option is A that is humans depend upon other organisms for food and oxygen
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such fossil evidence supports which statement put forth by alfred wegener regarding the geologic history of earth
Answer:
Continental drift was a theory that explained how continents shift position on Earth's surface. Set forth in 1912 by Alfred Wegener, a geophysicist and meteorologist, continental drift also explained why look-alike animal and plant fossils, and similar rock formations, are found on different continents.
Explanation:
Answer: C) The continents were once United into a single supercontinent named Pangea, which broke apart and the continents gradually moved their current positions. (USATestprep)
Explanation:
The “Explanation” is all in the answer, really. :)))
What two subatomic particles affect the charge of an atom?
Answer:
♡Hi darling!♡
-- The answer is protons and neutrons♡
Hope I could help!
~Clara
✧･ﾟ: *✧･ *:･ﾟ✧*:･ﾟ✧･ﾟ: *✧･ﾟ *:･ﾟ✧*:･ﾟ✧✧･ﾟ: *✧･ *:･ﾟ✧*:･ﾟ✧･ﾟ: *✧･ﾟ
Explanation:
what is the function of Queen Bee?
Explanation:
HONEY BEE QUEEN'S ROLE IN THE COLONY
The Queen Bee plays a vital role in the hive because she is the only female with fully developed ovaries. The queen's two primary purposes are to produce chemical scents that help regulate the unity of the colony and to lay lots of eggs.
Answer:
the function of queen bee are
1. to lay's egg
2. queen fed with royal jelly
Explanation:
What characteristics are used to categorized stars?
Answer:
Characteristics used to classify stars include color, temperature, size, composition, and brightness.
Need hlp pls thanks
if u give good answer i will make u brainly answer
Answer:
the answer is option D
Explanation:
During a chemical reaction, increasing the temperature often
OA increases the rate of chemical change.
ОВ.
decreases the rate of chemical change
OC.
reverses the direction of chemical change.
OD. prevents a chemical change from occurring.
Answer:
A increases the rate of chemical change.Explanation:
Elements undergo chemical bonding-where electrons are shared, and rearranged to form various molecules and compounds. Bond formation in chemical reactions have specific requirements for molecular configurations and energy.
Molecules usually collide at random til conditions are favorable for bonding. Chemical change or reactions occur at faster rates at higher temperatures. Heating molecules increases their collision frequency and makes it more possible for the correct molecular orientation (for breaking and forming bonds) and energy to react are present.
Which processes are involved in metabolism?
a. synthesis, growth, repair
b. decomposition, energy release
c. reversible reactions, equilibrium
d. synthesis and decomposition
e .exchange reactions, control of pH
f. all of the above
PLZ HElP!!
All the members of one species that live in the same geographic area make up a
Answer:
population
Explanation:
Which of these represents transfer of heat through conduction when a fireplace is lit in a room?
Hot air rises through the chimney.
Cool air is drawn in from the sides.
A spade placed in the fire turns hot.
A person sitting nearby feels the hea
Answer:
A spade placed in the fire turns hot.
Explanation:
if your poop is green, is that a good thing or a bad thing.
Answer:
All shades of brown and even green are considered normal. Only rarely does stool color indicate a potentially serious intestinal condition. Stool color is generally influenced by what you eat as well as by the amount of bile — a yellow-green fluid that digests fats — in your stool.
Answer:
You will be fine I hope. :) It just says you have been eating green foods.
Explanation:
Which codon is the code for the amino acid histidine? (His)
Answer: B) CAU
Explanation:
I just did the test ;)
EASY QUESTION! MARKING BRAINILEST! QUESTION IN PICTURE!
1) e 1
2) c 2
3) b 3
4) d 4
5) a 5
Answer:
1) e 1
2) c 2
3) b 3
4) d 4
5) a 5
Explanation:
Consider the solid phase of the substances listed in the chart. In which substance are the intermolecular forces strongest?
a. helium c. water
b. mercury d. aluminum
Answer:
it would be A helium I think
Explanation:
Please can someone help me with this!????
Answer:
Darker colors absorb heat so the darker fur color on the extremities would help in keeping the rabbits warm.
how steroids affect skeletal system and muscular system.
(5 sentences for each system)
Answer: Many drugs can affect muscular control and skeletal strength. Steroid use during childhood or adolescence, resulting in artificially high sex hormone levels, can signal the bones to stop growing earlier than they normally would, leading to short stature. PCP can cause a user to have severe muscle contractions.
Explanation:
If our pupil is just a hole how does it go small and big when your thinking of something...
Answer:
This is controlled by muscles in the iris which will constrict or enlarge the pupil.
Explanation:
4. Which statement describes an exception to the cell
theory?
A) Plants and animals are made up of structural
units known as cells.
B) Mitochondria and chloroplasts contain genetic
material and can replicate.
C) All cells arise from preexisting cells.
D) The cell is the basic functional unit of all living
things.
The statement describes an exception to the cell theory - B) Mitochondria and chloroplasts contain genetic material and can replicate.
The cell theory is the theory that is given by German researchers Theodor Schwann, Matthias Schleiden, and Rudolph Virchow. This theory states three major principles:
All living organisms are composed of one or more cells.The cell is the basic unit of structure and organization in organisms.Cells arise from pre-existing cells which means cells divide and pass on hereditary informationenergy flows within cells.Thus, the statement describes an exception to the cell theory - B) Mitochondria and chloroplasts contain genetic material and can replicate.
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The structures responsible for completing the breakdown of carbohydrates into usable energy for the cell are the
A. Nuclei
B. Mitochondria
C. Ribosomes
D.chloroplasts
Answer:
The correct option is;
B. Mitochondria
Explanation:
The mitochondria are the organelle of the cell bund to the membrane that are referred to as the cell powerhouse they function in the same manner as the digestive system, such that they take in raw nutrients which are broken down to produce energy containing molecules which makes up the majority of the chemical energy required for the various biochemical reactions of the cell in a way such that the energy they produce are stored in adenosine triphosphate (ATP) molecules.
Answer:
B. Mitochondria
Explanation:
The mitochondria are cellular organelles found in eukaryotic cells. They are structures involved in cellular respiration, which is the process whereby energy in form of ATP is synthesized for use by the cell.
Cellular respiration in eukaryotes occurs in stages including glycolysis, kreb's cycle and oxidative phosphorylation. All these processes combine to breakdown carbohydrates (glucose) into usable energy for the cell. The structures responsible for this process is MITOCHONDRIA.
The ________ is the fluid component of blood.
Explanation:
Hey there!
The answer would be Plasma.
Reason: Plasma is composed of more than 90% of water in it. And rest are other materials like proteins, hormones, etc.
Hope it helps....
Answer:
plasma
Explanation:
PLEASE ANSWER ASAPPP!!! WILL GIVE BRAINLIEST
Answer:
i would say a
im sorry if im wrong also i dont need brainliest
Which value is a good estimate of the railroad’s average elevation?