Answer:
Its B
Explanation:
I chose C and got it wrong, the answer was B
Which two atoms form a covalent bond?
Answer:
In a covalent bond, the atoms bond by sharing electrons. Covalent bonds usually occur between nonmetals. For example, in water (H2O) each hydrogen (H) and oxygen (O) share a pair of electrons to make a molecule of two hydrogen atoms single bonded to a single oxygen atom.
Explanation:
Water is able to dissolve more substances than any other liquid. This is an example of which property?
O Density
O Adhesion/Cohesion
O Universal Solvent
Answer:
Universal Solvent
Explanation:
Water is known as a universal solvent as it is capable to dissolve more substances than any other liquid.
This is how molecules of water are attracted to other types of molecules.
A true universal solvent doesn't exist but water is the closest to it, as its polar property allows water to dissolve substances.
If scientists wanted to date the oldest rocks on Earth's surface, why wouldn't
they use rocks formed at the Mid-Ocean ridges ?
Answer:
Explanation:
This is because rocks formed at the mid ocean ridges are young rocks i.e the mid ridges is use to date young rocks. Rocks farther from the mid ridges are older than rocks near the mid ridges and this can also be as a result of the oceanic crust near the mid ridge are younger than the oceanic crust far away from the mid ridge.
For what type of study does the United States Census Bureau assist scientists by completing research?
A) Demographic
B) Fertility
C) Oceanographic
D) Environmental
So, if this is one strand of DNA, what will the other strand look like?
A T G C C G A T A
Answer:
T A C G G C T A T
Explanation:
In deoxyribonucleic acid (DNA) there are 4 nitrogen bases that pair like:
• Adenine (A) with Thymine (T)
• Cytosine (C) with Guanine (G)
We are given the strand:
A T G C C G A T A
For each A, write a T. For a T, write an A.
For every C, write a G. For a C, write a G.
The corresponding strand is:
T A C G G C T A T
answer quick!
Which statement best describes embryonic stem cells?
Embryonic stem cells are capable of self-renewal only.
Embryonic stem cells are capable of differentiation only.
Embryonic stem cells are capable of self-renewal and limited differentiation.
O Embryonic stem cells are capable of self-renewal and unlimited differentiation.
Answer:
Embryonic stem cells are capable of self-renewal and limited differentiation.
Explanation:
Answer:
✔ Somatic
stem cells are capable of
✔ self-renewal
, not differentiation.
✔ Embryonic
stem cells are capable of self-renewal and
✔ differentiation
.
✔ Amniotic fluid
stem cells are capable of
✔ self-renewal
and limited differentiation.
Explanation:
The alantic ocean grows in size due to a
It has grown in size due to global warming
A. anaphase
B. Metaphase
C. Telophase
D. Prophase
What type of macromolecule is starch?
Answer:polysaccharide
Explanation:
A starch macromolecule is a polysaccharide composed of thousands of glucose units. glucose molecules can be added to starch by a condensation reaction.
Trait A is expressed because of Genes X, Y, and Z. Trait A is a _____
1) physical trait
2) inherited trait
3) polygenic trait
4) pleiotropy
CAN YALL PLEASE HELP
Answer:
inherited trait
Explanation:
because it is what presented by it genotype
What is the definition of a Missionary
A religious community run by monks
Someone who prays five times a day
Christians who left home to convert foreign people to Chrissianity
A man or woman taking a pilgrimage to Mecca for their Hai
с
d
Answer:
Christian's who left home to convert foreign people to christianity
Explanation:
it was there mission
Pick any 2 organ systems in the human body and explain how they work together
in order to keep the body in homeostasis. Make sure to name both systems,
explain each system's main functions, and describe how they work together to
keep an important part of the body in balance.
Answer:If you were a single-celled organism and you lived in a nutrient-rich place, staying alive would be pretty straightforward. For instance, if you were an amoeba living in a pond, you could absorb nutrients straight from your environment. The oxygen you would need for metabolism could diffuse in across your cell membrane, and carbon dioxide and other wastes could diffuse out. When the time came to reproduce, you could just divide yourself in two!
However, odds are you are not an amoeba—given that you're using Khan Academy right now—and things aren’t quite so simple for big, many-celled organisms like human beings. Your complex body has over 30 trillion cells, and most of those cells aren’t in direct contact with the external environment.^1
1
start superscript, 1, end superscript A cell deep inside your body—in one of your bones, say, or in your liver—can’t get the nutrients or oxygen it needs directly from the environment.
How, then, does the body nourish its cells and keep itself running? Let's take a closer look at how the organization of your amazing body makes this possible.
Explanation:
5. The evidence for evolution by natural selection.
Answer:
air+7=p+s/1.342643
Explanation:
thats all i know
All life on earth depends on _____ through the ecosystem
Answer:
Energy
Explanation:
What is equilibrium?
Answer:In a chemical reaction, chemical equilibrium is the state in which both reactants and products are present in concentrations which have no further tendency to change with time, so that there is no observable change in the properties of the system.
Explanation:
Answer:
Equilibrium means when the concentrations of reactants and products are in an unchanging ratio. Another way of saying this is that a system is in equilibrium when the forward and reverse reactions occur at equal rates.
Explanation:
i hope this helps
Find the variables in the following simple experiments and state which variable is the
independent variable, dependent variable, and the controlled variables.
1. Experiment to find out if tomato plants grow faster in full sunlight or partial sunlight.
2. Experiment to find out if red ants prefer honey over sugar as a source of food.
3. To find out if where fish survive better in rainwater or chlorinated water from faucet.
4. To find out if chicken grow faster if they are fed with pure corn or pure rice.
5. An experiment to find out if corn plants grow better in sand or clay soils
Answer:
1. The dependent variable is the tomato plant because the tomato plants depends on the light to for the plant to grow. The independent variable is the light. The light does not depend on anything. In this experiment the variable that is being controlled is the light because the experimenter is controlling how much light the tomato plant is getting.
2. The dependent variable are the red ants because the red ants are going to determine(depend) to see if they like honey or sugar better. The independent variable are the honey and sugar because honey and sugar are a type of food and it does not depend on anything. The controlled variable is the food because the experimenter is controlling what the red ants like for food.
3. The dependent variable is the fish because the fish depends if they will survive in rainwater or chlorinated water. The independent variable is the rainwater and chlorinated water because the types of water does not depend on whether or not the fish survives. The controlled variable is the types of water (rainwater, chlorinated) because the experimenter is controlling the water that the fish will be exposed to.
I hope that this helps.
How are young plants are supported
Answer:
You are a wh0re
Explanation:
A male flying tree squirrel with a medium-length tail has babies with a female with a medium-length tail. Over the years their total offspring number is 52. 13 of these babies have long tails, 27 have medium-length tails and 12 have short tails. a) Propose a method of inheritance for tail length. b) What is the likely genotype of the parents? c) What is the expected phenotypic ratio? d) Given the number of offspring that were had, what is the expected number of offspring for each phenotype?
Answer:
Explanation:
(a) The mode of inheritance for the tail length would be incomplete dominance. In this type of inheritance, one of the alleles representing a gene in heterozygous conditions exert incomplete dominance on the other allele giving rise to a new phenotype.
(b) The likely genotype of the parents are heterozygous. The medium tail length results from the incomplete dominance of the long tail allele on the short tail allele. There is no allele for the medium tail length itself.
(c) Assuming that the allele for long tail length is T and that of short tail length is t, the genotype of the parents would Tt. Crossing the two parents
Tt x Tt
TT Tt Tt tt
TT - Long tail = 1/4
Tt - medium tail = 1/2
tt - short tail = 1/4
(d) From the expected phenotype ratio
Expected number of offspring with long tail = 1/4 x 52 = 13
Expected number of offspring with medium tail = 1/2 x 52 = 26
Expected number of offspring with short tail = 1/4 x 52 = 13
PLEASE HELP QUICK!!!! WILL GIVE BRAINIEST!!!!!
Answer:
It’s a protein macromolecule
(ii) Explain why active transport is necessary in root hair cells.
Please helpp
Active transport is necessary in the root hair cells because minerals in soil solutions cannot move into plants by osmosis or diffusion.
Dissolved minerals in soil solutions cannot move into the roots of plants by osmosis because only water molecules move by the process.
Also, the minerals cannot move by diffusion because their concentrations are usually very low in soil solutions.
Thus, the minerals need to be moved from the soil into the roots of plants against their concentration gradients. This is where active transport comes in.
More on active transports can be found here: https://brainly.com/question/2503897?referrer=searchResults
what do a grasshopper, a carrot, and a chicken have on common
Answer:
The food chain/food web
Explanation:
How would our world be different if humans did not discover how to use yeast thousands of years ago?
Answer:
what is yeast? a microscopic fungus consisting of single oval cells that reproduce by budding, and are capable of converting sugar into alcohol and carbon dioxide.
Explanation:
ok so it would be different because we wouldnt have alchool and carbon dioxide and sugar would be useless
Answer:
Once upon a time there were no farms. People ate fruit off the vine and killed animals as they ran. They roasted things when it suited them but just as often ate them raw. The world was like this for thousands of years, a place of arrows and nuts where everything that was necessary could be found. One might imagine many reasons for giving up on those old, superficially idyllic, ways. Perhaps it was hunger, that ultimate mother of invention, or maybe it was just invention itself, unmotivated by need.
Below is a diagram illustrating how cells at the bottom of the early embryo are releasing chemicals to nearby cells:
Predict the end result of the process represented in the diagram.
Cell differentiation
Programmed cell death
Mitotic embryonic division
Transcription and translation
Answer:
The correct answer is - transcription and translation.
Explanation:
The chemical shown in the image which is released to the nearby cells is signaling molecules that interact play an important role to induce the change in the cell function as per the chemical signal molecule and internal condition.
Signal molecules bind to the receptor present on or in the cell and change confirmation to initiate the gene expression more specifically translation and produce the proteins that result in different cell functions.
Primary function of the signaling molecules is to start protein production in nearby activated cells.
Answer:
Cell Differentiation
Explanation:
compare the number of chromosomes in pumpkins to the number of chromosomes in humans.
PLEASE HELP ASAP!
Answer:
Humans: 46 chromosomes (23 pairs)
Pumpkins: 40 chromosomes (20 pairs)
The number of chromosomes in pumpkins to the number of chromosomes in humans is Humans: 46 chromosomes (23 pairs) and Pumpkins: 40 chromosomes (20 pairs)
What is the number of chromosomes in different animals?If a dog has 78 chromosomes in each of his cells, each set of DNA has two sets of chromosomes because dogs are a diploid species so it would be 78/2 and in each cell a dog with 78 chromosomes would have 39 molecules of DNA in each of his cells.
The final products of meiosis in males is four sperm cells and in females it is one ovum and three polar bodies. Thus, the final product of meiosis is four sperm cell in male and one ovum in female with three polar bodies. The main objective of meiosis is to produce gametes, the sperm and eggs, with half of the genetic character of the parent cell.
Meiosis has been defined as the process in which a single cell divides into two identical daughter cells and the process is known as cell division. Meiosis has a type of cell division in sexually reproducing organisms that reduces the number of chromosomes in gametes.
Therefore, The number of chromosomes in pumpkins to the number of chromosomes in humans is Humans: 46 chromosomes (23 pairs) and Pumpkins: 40 chromosomes (20 pairs)
Learn more about chromosomes on:
https://brainly.com/question/1596925
#SPJ2
state 2 preventive actions a person could take to reduce the chance of a heart attack
Answer:
Regular Exercise and a Healthy Diet
In 1898 Friedrich Loeffler and Paul Frosch found evidence that the cause of the highly contagious hoof-and-mouth disease in livestock was a microscopic infectious particle. It was discovered that this particle cannot reproduce on its own. Which of these is most likely responsible for causing hoof-and-mouth disease in livestock?
Answer:
a virus, because it requires a host cell to reproduce
Explanation:
a bacterium, because it is contagious a fungus, because it infects livestock a protist, because it is microscopic a virus, because it requires a host cell to reproduceThe correct answer would be a virus because a virus is the only microbe that cannot reproduce on its own without a host. A virus utilizes the genetic mechanism of its host to reproduce either lytically or lysogenically.
In lytic cycle, the virus utilizes the genome system of the host to produce more viruses that eventually leave or lyses the host to become independent viral particles, killing the host in the process.
In lysogenic cycle, the virus inserts its genome into that of the host and uses the host's replication machinery to replicate its genome. The virus then waits for the defense mechanism of the host to become weakened before multiplying and lysing the host.
Plz help me with this.
Answer: evaporation i believe
Which of the following molecules can be identifield as carbohydrate select all that apply
Answer: it would beidk
Explanation: idklol.
The green plant pigment that absorbs sunlight is
OA.
cellulose.
OB. chlorophyll.
C. carbohydrate.
OD. starch.
Answer:
B. Chlorophyll
The others are wrong
Which organelles would a student include when constructing a model of a plant cell that would differentiate it from an animal cell?