Which structure is represented by the letter C?

Choose 1 answer:

(Choice A)
Chloroplast

(Choice B)
Vacuole

(Choice C)
Nucleus

(Choice D)
Mitochondria

Answer:

Temperature causes water molecules to move more quickly, because each individual molecule has more energy as it gets hotter (according to Kinetic molecular theory). If you get water hot enough, the molecules move so much that the hydrogen bonds that hold them together start to break and the water becomes a gas

Explanation:

Answer:

a virus, because it requires a host cell to reproduce

Explanation:

The 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.

Answer:

b

Explanation:

DID IT

Mercury is used in thermometers to estimate temperatures. Liquid mercury composed of Hg atoms is a pure substance that consists of single elements. Thus, option B is correct.

Pure substances are chemicals that are matter and have been known to have distinct chemical properties because of their constant and definite composition. The physical methods of separation can not be used to separate the pure substances.

The liquid mercury is a pure substance as it has been composed of only one type of elemental atom Hg. All of its composition has been carrying the Hg atoms uniformly that possess and exhibit the same chemical and physical characteristics.

Therefore, option B. the liquid mercury is a pure substance as it is made of the same type of element.

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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:

Answer:

You did not provide us with the materials you need to be classified, but I hope this helps:

A mineral is a solid formation that occurs naturally in the earth while a rock is a solid combination of more than one mineral formations which is also occurring naturally. A mineral has a unique chemical composition and is necessarily defined by its crystalline structure and shape.

Examples of rocks include: sandstone, basalt, limestone, and slate

Examples of minerals include: cobalt, zinc, lithium, and gold

Answer:

True

Explanation:

At the end of mitosis, one cell produces two genetically identical daughter cells.

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.

Answer:

Bread, bananas and honey have carbohydrates.

Explanation:

The group fed a pre-race meal of bread with bananas and honey because bread, bananas and honey have high amount of carbohydrates which give quick energy to the athlete. This carbohydrate is a macromolecule which is quickly converted into micromolecule i. e. glucose that is absorbed by the cell and the mitochondria of the cell produces energy in the form of ATP that is used by the athlete in running.

Answer:

berries

Explanation:

yw

Answer:

a berries

Explanation:

brainliest

Answer: The First one/ A /Top Left corner

Explanation:

Equatorial distance shows the size of a planet. The larger the distance, the larger the planet.

Option A puts Jupiter as having the largest distance which is correct as Jupiter is the largest planet and is followed by Saturn and then Uranus and Neptune in that order.

Option A also shows Earth as being larger than Mars, Venus and Mercury which is accurate as well.

Option A is the best choice.

Answer:

D

Explanation:

DNA replication occurs during this S (synthesis) phase.

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:

Answer:243

Explanation: multiply all of them then add and it will be 243

The expression that is equivalent to a - 4 is: (a - 2) - 2 or (a - 6) + 2 or (a - 4) + 0 or (a - 8) + 4.

An expression in mathematics is a set of variables, constants, and operators that can be evaluated to produce a value.

For example, the expression "2x + 3" contains the variable x, the constants 2 and 3, and the operators + and *.

When we substitute a value for x, such as x = 4, we can evaluate the expression to get a value, in this case 11.

The expression that is basically equivalent to a - 4 is:

(a - 2) - 2 or (a - 6) + 2 or (a - 4) + 0 or (a - 8) + 4.

For example,

If a = 6, then a - 4 = 6 - 4 = 2, and we can also write it as (6 - 2) - 2 or (6 - 6) + 2 or (6 - 4) + 0 or (6 - 8) + 4. All of these expressions simplify to 2.

Thus, this can be the expression asked.

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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:

B. More competition for food

Answer:

Not 100% if this will help or if this is what you are looking for but...

When an animal eats the plant, the animal can use the plant's sugars as energy. This is how all animals get their energy from plants. Photosynthesis happens in organelles called chloroplasts.

Explanation:

Hope this helps a little.

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.

Answer:

homeostasis!

Explanation:

Answer:

The body systems constantly interact with each other to maintain homeostasis.

Answer:

You are a wh0re

Explanation:

Answer:

A a nucleus

Explanation:

since prokaryotes have their DNA in the cytoplasm they do not have a nucleus

Answer: evaporation i believe

Answer:

Humans have impacted nature in a lot of ways. I also think that society has shifted humanity away from what matters most in life, we've changed as a species and I want to keep it as real as possible. but uh... what was your question?

Explanation:

May I have brainliest please? :)

Answer:

Impacts from human activity on land and in the water can influence ecosystems profoundly. Climate change, ocean acidification, permafrost melting, habitat loss, eutrophication, stormwater runoff, air pollution, contaminants, and invasive species are among many problems facing ecosystems.

Explanation:

Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.

Answer: The answer is 96



Explanation:

Answer:

Regular Exercise and a Healthy Diet

Answer:

Filling out questionnaires.

Participating in surveys.

Stopping at hunter check stations.

Providing samples from harvested animals.

Funding wildlife management through license fees.

Answer:

The correct answer is -

i) genotype of F2 - 1:2:1 = dominant:heterozygous:recessive

ii) genotype of F1 - all heterozygous dominant

phenotype - all red

Explanation:

In the cross of red- flowered plant and white flowered plant the offspring produces red flowers that s only possible if the parent red flower plant has both alleles in dominant condition.

For the F1 the gametes will be R, R and r, r

from the Punnett square, we can see all the offspring are heterozygous (Rr) in genotype and red in phenotype

For F2 the gametes will be - R, r, and R, r

From the punnet square, the genotype we get is 1:2:1 = dominant:heterozygous:recessive