The nucleus _____.
A.has a net negative charge
B.contains the electrons, protons, and neutrons
C.is the center core of an atom
Answer:
C
Explanation:
Answer:
C.
Explanation:
A. is wrong because the electrons are on the outermost of the atom; that would also mean that B. is wrong. C is correct because the nucleus is, in fact, the center core of the atom.
How do animals transport materials?
Answer:
Thought the process of discussion and ossmossis as due to gaseous exchange
Explanation:
With the aid of thin layers and large surface area animal are able to transport material thought the blood due to diffusion and osmosis In order to transport different materials from a every of high concentration to a low concentration until material is equally distributed throughout the body
DESCRIBE THE FUNCTION OF A CELL MEMBRANE AND ITS RELATIONSHIP TO WHAT HAPPENS INSIDE A CELL
Answer:
cell membrane's main function is to act as a selectively permeable barrier to the transport of materials across it. Membrane is made up of phospholipids arranged in a bilayer fashion. The phospholipids are amphipathic in nature, that is, contain both a hydrophobic and a hydrophilic end.
Explanation:
17. Which of the following best describes how amino acids affect the tertiary structure of a
protein?
a) The number of amino acids determines the tertiary structure of the protein.
b) The interactions of the different R-groups with other R-groups and with their environment
determine the tertiary structure of the protein.
c) The R-group of the last amino acid that is added to a growing polypeptide chain
determines the next amino acid that is added to the chain.
d) The sequence of the amino acids in the polypeptide chain determines the protein's
primary structure but has no effect on its tertiary structure.
Answer:
It is B
Explanation:
I had this question on my test last week
The tertiary structure of the protein is determined by the interactions of the different R-groups with other R-groups and with their environment in the protein (Option B).
An R-group (also called variable group) is a side chain that is attached to the α-carbon of the amino acids, the building blocks of proteins.The linear sequence of amino acids within a protein is the primary structure of proteins. The second structure of proteins is determined by the pattern of hydrogen bonding in the peptide backbone. The most common secondary structures of the proteins are alpha-helices and beta-sheets.The protein tertiary structure is the 3D (tridimensional) shape of the protein, which is due to interaction among R groups of amino acids and with their environment.The most common tertiary structures of the proteins are globular and fibrous structures.Finally, the quaternary structure of the proteins is determined by the interaction of several protein chains or subunits.In conclusion, the tertiary structure of the protein is determined by the interactions of the R-groups and with their environment in the protein (Option B is correct).
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What is difference between acid and bases?
Definition. A substance, mostly liquid that donates a proton or accepts an electron pair in reactions. An acid increases the concentration of H+ ions. A base is a substance that releases hydroxide (OH-) ions in aqueous solution, donates electrons and accepts protons.
(just if someone needs this i guess)
Answer:
Acids are sour, gives burning sensation, generally sticky, reacts with metals to produce hydrogen gas. Although bases are opposite as they are bitter, generally odorless (except ammonia), they are slippery; bases react with fats and oils. In phenolphthalein, indicator acids remain colorless, and base gives pink color.
Explanation:
An acid is a substance that releases hydrogen ions into an aqueous solution. A base is a substance that releases hydroxide ions.
Acids are sour, gives burning sensation, generally sticky, reacts with metals to produce hydrogen gas. Although bases are opposite as they are bitter, generally odorless (except ammonia), they are slippery; bases react with fats and oils. In phenolphthalein, indicator acids remain colorless, and base gives pink color.
Guys I need help with this
Answer:
I believe it's B, its been a while since I last studied cells so I might be wrong
Explanation:
Answer:
B
Explanation
Es l segunda de arribaa
Which of the following occurs during telophase II? Select all that apply.
1) New nuclei begin to form
2) The centrioles pull at the chromatids
3) Chromatids arrive at opposite ends of the cell
4) Chromosomes are drawn to the metaphase plate
5) Cytoplasm divides and two daughter cells are formed
Answer: 1, 3, 5
new nuclei begin to form
chromatids arrive at opposite ends of the cell
cytoplasm divides and two daughter cells are formed
Answer:
Which of the following is the correct order of the stages of meiosis II?
prophase, metaphase, anaphase, telophase
Which of the following occurs during telophase II? Select all that apply.
new nuclei begin to form
chromatids arrive at opposite ends of the cell
cytoplasm divides and two daughter cells are formed
Explanation:
Exercise 4 (Module 6.9) Glycolysis is the first of three steps in cellular respiration. Review glycolysis by matching each phrase on the right with a term on the left. Some terms are used twice.
_____ 1. Compound formed between glucose and pyruvic acid
_____2. Not involved in glycolysis _____3. Fuel molecule broken down in glycolysis
_____ 4. Produced by substrate-level phosphorylation
_____5. Invested to energize glucose molecule at start of process
_____ 6. Reduced as glucose is'oxddized _____7. Glucose converted to two molecules of this
_____8. Assembled to make ATP
_____9. "Splitting of sugar"
_____10. Carries hydrogen and electrons from oxidation of glucose
A NADH
B. Pyruvic acid
C. ATP
D. NAD+
E Glucose
F. Glycolysis
G. ADP and P
H. Oxygen
I. Intermediate
Answer:
Explanation:
?????????? i don't undrssanted
Imagine a digestive system where food entered the small intertwine directly without first going through the oral cavity and stomach. What would he the disadvantages of this type of digestive system?
which of the following statements best explains why plants wilt
Answer:
needs more context bro
What is the difference between glucose and ATP?
Glucose is a storable form of energy, while ATP is a usable form of energy.
ATP is a storable form of energy, while glucose is a usable form of energy.
ATP is only a usable form of energy, but glucose can be used and stored.
Glucose is only a storable form of energy, but ATP can be used and stored.
The main difference between glucose and ATP is that Glucose is a storable form of energy, while ATP is a usable form of energy.
Glucose is storable form of energy because it can't be used as energy until it can be broken down by mitochondria of the cell while on the other hand, ATP is the usable form of energy which we can get from the break down of glucose molecules. Our cells use ATP as a fuel to do various activities of the cell so we can conclude that in glucose, energy is present in stored form whereas ATP is used as energy in various activities.
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heart muscle cells have alot of mitochondria. why do you think this is?
Answer:
The heart is a vital organ with a high metabolic demand. Our heart muscles contain so much mitochondria because those muscles are very active in our body and require lots of energy to constantly pump blood through our circulatory system.
Explanation:
28. The phases for Meiosis II are:
A student observers melting crayons. Which of the following describes what they saw? A. A chemical change. B. A physical change. C. A physical property. D. A chemical property
Answer: A physical change
Explanation: since the melted they are still Crayons. You can freeze it and it would still be a crayon. So it was only a physical change
Which of the following nitrogen bases is present only in RNA and not in DNA?
Answer:
The nitrogen base uracil is only present in RNA. It replaces the Thymine used in DNA and bonds with Adenine.
Explanation:
brainliest - An offspring inherits an equal amount of its genetic information from each parent true false
Answer:
true
they get equal chromosome from each parent.
Answer: False
Explanation:
While women do inherit 50% of their DNA from each parent, men inherit about 51% from their mother and only 49% from their father. ... To answer this question, first a little 101 in genetics: all humans, both male and female, inherit 23 chromosome pairs from their parents, for a total of 46 chromosomes
Long lashes (L) are dominant over short eyelashes (l). Complete a Punnett Square crossing two parents that are both heterozygous for long eyelashes.
main parts of the male reproductive organ and their functions.....
Answer:
penis
Explanation:
sex
A brown eyed person (BB) and a blue eyed person (bb) have several children. Which of these statements describe the probable eye color of their children?
1.All will have blue eyes
2.All will have brown eyes
3.Half will have brown eyes, and half will have blue eyes
4.Less than half will have brown eye
Answer:
2. B. All will have Brown Eyes
Explanation:
Brown is dominant, so all children will have Bb, brown eyes
Answer:
Im pretty sure theyll have brown eyes if not my bad
Explanation:
confusin help pls ??????????
Answer:
yes I ldk what u want with no pictures
PLEASE HELP! :(
According to the graph, what condition is best for enzyme activity?
Answer:
C
Explanation:
Highest peck in enzyme activities
sex linked traits are typically carried on the x chromosome. to denote the geontypes, a superscript is used. a female carrier of hemophillia will have the genotype xH Xh . using the letters X AND Y , what is the genotype for each of the following people?
Answer: XHY, XHXh
Explanation: I don't know if this is correct exactly but i just looked at my notes from my bio class because we did this previously so i think it's right
type a paragraph summarizing cellular division and differentiation
PLS HELP!!! PROJECT DUE IN 30 MINUTES!!
Answer:
Cellular differentiation is the process in which a cell changes from one cell type to another. Usually, the cell changes to a more specialized type. ... Differentiation continues in adulthood as adult stem cells divide and create fully differentiated daughter cells during tissue repair and during normal cell turnover.
Answer:
Cellular differentiation is when a cell changes from one cell type to another—usually, the cell changes to a more specialized class. Differentiation continues in adulthood as adult stem cells divide and create fully differentiated daughter cells during tissue repair and average cell turnover.
Explanation:
IM A DIFFERENT BREED!
Which of the following statements tells how facilitated diffusion differs from
simple diffusion?
A. Particles move through cell membranes without the use of energy by cells.
B. Particles tend to move from high concentration to lower concentration.
C. Particles move within channel proteins that pass through cell membranes.
D. Particles tend to move more slowly than they would be expected to move.
Answer:
I think its C but I am not sure, I hope this helps :)
Explanation:
The statement 'particles move within channel proteins that pass through cell membranes' indicates the reason for which facilitated diffusion differs from simple diffusion (Option C).
Diffusion (both facilitated diffusion and simple diffusion) refers to the movement of substances across biological membranes from an area of high concentration to an area of low concentration.
Facilitated diffusion and simple diffusion are two types of passive transport that do not require energy to move molecules/ions in favor of a concentration gradient.
In facilitated diffusion, specific membrane proteins known as carriers or channels help to the movement of substances in favor of a concentration gradient.
Conversely, in simple diffusion, small molecules (e.g. CO2 and oxygen) freely diffuse across a selectively permeable membrane in favor of a concentration gradient.
In conclusion, the statement 'particles move within channel proteins that pass through cell membranes' indicates the reason for which facilitated diffusion differs from simple diffusion (Option C).
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pyruvic acid enters the ____ and is first converted into _____.
a. krebs cycle; citric acid
b. krebs cycle; acetyl CoA
c. mitochondria; citric acid
d. mitochondria; acetyl CoA
Answer :
D. Mitochondria ; acetyl CoA
pyruvic acid enters the mitochondria and is first converted into acetyl CoA
Please help! Super easy! (Photo)
Answer:
I don't know you really didn't give us a question so sorry
Answer:
I don't really get this., is there supposed to be a photo?
A strand of DNA contains the bases adenine, cytosine, cytosine, and guanine, in that order. Which would be the order of the bases on the opposite strand of DNA?
cytosine, adenine, adenine, and thymine
cytosine, thymine, thymine, and adenine
thymine, guanine, guanine, and cytosine
thymine, adenine, adenine, and cytosine
Answer:
thymine, guanine, guanine, and cytosine
Explanation:
The order of the bases on the opposite strand of DNA should be Thymine, Guanine, Guanine and Cytosine.
DNA and complementary base pairingThe deoxyribonucleic acid (DNA) is a double helix composed of two long chains of sequential nucleotides.
In DNA there are four classes of nucleotides, each containing one different nitrogenous base (i.e., Adenine, Guanine, Cytosine, Thymine).According to the base pair rules of complementarity, Adenine always pairs with Thymine, whereas Guanine always pairs with Cytosine.In conclusion, the order of the bases on the opposite strand of DNA should be Thymine, Guanine, Guanine and Cytosine.
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a variable that stands alone and isn’t changed by the other variables you are trying to measure
Question 6 options:
independent variable
test-o-matic group
dependent variable
control group
9) List these biomes in order from the greatest to least diversity (temperate
deciduous forest, tropical rain forest, temperate rain forest).
Tropical rainforest, temperate deciduous forest, temperate rainforest
I'm not too sure if the temperate forest is more diverse than the rainforest, so sorry if I'm wrong. Tropical rainforests are the most diverse because of the humidity, which is water. The water helps the soil stay healthy, which makes more plants, which makes more animals and insects.
I hope this helps! Good luck!
The biomes in order from the greatest to least diversity will be tropical rainforest, temperate deciduous forest, and temperate rainforest.
Tropical rainforests refer to the rainforests that occur in areas that have no dry season.
The temperate deciduous forest refers to a biome that always changes. It has seasons such as winter, spring, summer, and fall.
Temperate rainforest refers to the broadleaf or coniferous forests that receive heavy rain. This condition supports ferns, shrubs, etc.
It should be noted that the biome with the greatest diversity is tropical rainforest while the least is the temperate rainforest.
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Stomach acid has a pH of about _____. a. 4 c. 6 b. 2 d. 10