how do the structures of a vacuole and a nucleus differ?
A. a vacuole is enclosed within a membrane ,and a nucleus is not enclosed within a membrane.
B. a vacuole is thick fluid , and nucleus is rigid set layers
C. a vacuole contain no water , and a nucleus a mostly water
D. a vacuole contain mostly water, and a nucleus contain mostly DNA

Answer:

F) Thermohaline circulation pattern move surface water from equatorial regions to the poles

Answer:

C

Explanation:

While D could be the right answer if it was phrased better the most liekly answer seems to be C as Genes are small segments of DNA and DNA makes up chromosomes in turn causing chromosomes to be made up of genes. I believe that proteins do make our traits so C is the best answer.

Genes are segments of DNA on chromosomes. The genes code for proteins that make our traits. So, the correct option is (C).

Genes are defined as the basic units of heredity passed from parent to child that are made up of sequences of DNA and arranged one after the other at specific locations on chromosomes in the nucleus of cells.

Genes are found in each one of the 37 trillion cells that make up the body. Every cell has a nucleus and inside each nucleus are chromosomes and all chromosomes are made of DNA, molecules that contain genetic information called genes.

A chromosome contains hundreds to thousands of genes where each normal human cell has 23 pairs of chromosomes, for a total of 46 chromosomes. Trait is any gene-determined characteristic and is often determined by more than one gene.

Thus, Genes are segments of DNA on chromosomes. The genes code for proteins that make our traits. So, the correct option is (C).

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Answer:

True :)

Explanation:

Many Archaea are specialized to live in extreme environments. Just three types are described here. Archaea are now known to live just about everywhere on Earth. They are particularly numerous in the ocean.

Answer:

What variation exists between the species for traits like beak size and shape?

Explanation:

If the question is looking for biodiversity, the answer would include variation.

Answer:

1. Lack of motion is death. Movement is a vital nutrient to your body, just as much as food, water, and oxygen.

2. Potassium supplements can prevent attacks of paralysis.

Explanation:

Answer:

Structure of the simple squamous epithelium

The cells appear like scales that provide a smooth low-friction surface over which fluids can move quickly. Membrane carrier proteins are found in this layer that function to facilitate the movement of ions, gases, small molecules, or water through the cells.

Answer:

The promoter is the binding site for RNA polymerase, the enzyme that performs transcription.

Explanation:

The operator is a negative regulatory site bound by the lac repressor protein. The operator overlaps with the promoter, and when the lac repressor is bound, RNA polymerase cannot bind to the promoter and start transcription.

Answer:

False

Explanation:

'Adenine' pairs with thymine and cytosine pairs with guanine in a DNA double helix.

It is false that in the DNA double helix, archaic pairs with thymine and cytosine pairs with guanine.

In molecular biology, the structure created by double-stranded molecules of nucleic acids like DNA is referred to as a "double helix."

A nucleic acid complex's double helical structure develops as a result of its secondary structure and plays a crucial role in establishing its tertiary structure.

One of the four bases—adenine (A), cytosine (C), guanine (G), or thymine—is joined to each sugar (T).

Adenine forms chemical bonds with thymine while cytosine forms chemical bonds with guanine to join the two strands together.

A broad head, prominent supraorbital ridges (brow ridges), and the absence of a prominent chin are characteristics of archaics that set them apart from anatomically modern humans.

Thus, the given statement is false.

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Answer:

B. Dying hair a different color

Answer:

Burning either fossil fuels or biomass releases carbon dioxide (CO2), a greenhouse gas. However, the plants that are the source of biomass for energy capture almost the same amount of CO2 through photosynthesis while growing as is released when biomass is burned, which can make biomass a carbon-neutral energy source.

there are no omnivores in the food web

in case you're wondering, bacteria is not an omnivore it's a decomposer

Answer:

The first answer, Because family members most closely represent the unique genomic (DNA) and environmental interactions that individuals experience. Is right

Explanation:

Answer:

The skeletal muscles connect to the bones and work with connective tissue at the joints to allow for movement. The muscles connect to the nervous system and allow initiation of movement through nerve signals to and from the brain. The bones and muscles are supported by connective tissue, which plays an integral role in structural support.

Answer:

Odometer

It is measured by an instrument called odometer.

Answer:

A) Dirt

Explanation:

Our environment comprises of two factors namely biotic factors and abiotic factors. Biotic factors are those in an ecosystem that consists of all living organisms such as plants, trees, humans, insects, animals, birds, etc. These living organisms will interact with each other and sustain their life.  

Abiotic factors are those that contain non-living organisms. These factors include soil, air, water, sunlight, etc. These factors often have a greater impact on biotic factors. From the question, a plant is a living thing and it belongs to the biotic factor.  

Answer:  They are all Abiotic factors actually but my best guess would be B. sunlight

Explanation:

Answer:

The answer is C because - Water Droplets that are too heavy to float make Rain .

Explanation:

Answer:

Both control

Explanation:

Brain controls the body while mitochondria controls the cell

Explanation:

Hope it will help you to solve your question.

Answer:

hiiiiiiiiiiiiiiiiiiii

Explanation:

understand

Answer: The size of each object and the space between them.

When dealing with the force of gravity between two objects, there are only two things that are important – mass, and distance. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them.

Answer:

I think the answer is...

the virus lands on the outside of the cell and injects its genetic material into the cells  

i'm not sure but this is what I think...

Explanation:

Viruses usually inject their all genetic material into one cell to individual virion contains multiple copies of its fusion protein.

Answer:

i ) Gompertz equation :

[tex]\frac{dP(t)}{dt} = \alpha In ( \frac{K}{P(t)} )P(t)[/tex]

ii) The year that population reaches 7 billion is 2013

iii) The logistic growth was more accurate

Explanation:

i) write and solve the differential equation for Gompertz growth

Gompertz equation :

[tex]\frac{dP(t)}{dt} = \alpha In ( \frac{K}{P(t)} )P(t)[/tex]

∝ = growth rate

k ( carrying capacity ) = 16 * 10^9

P(t) = population at time t

ii) Determine what year the population reached 7 billion

The year that population reaches 7 billion is 2013

solution attached below

iii) Determine if logistic growth or Gompertz growth was more accurate  considering world population reached 7 billion on October 31,2011

The logistic growth was more accurate because the when Logistic growth model was used, the year in which the population reached 7 billion was 2010 and this value is more closer to 7 billion on October 31 2011 ( given value )

Answer:

Kingdom!

Explanation:

Answer:

I think that limestone is older

Explanation:

Answer:

it says that plants are the main source of nutrients and energetic materials and when the cow feed on them, it consumes some of the benefits that we miss when we eat beef

Answer:

Question 6: The answer is the energy, because it collects more energy than the cow. When the cow eats plants, the energy from the plant decreases leaving the cow with only little amount.

Question 7: I agree, Because plants holds way more nutrients and energy than meat. I could support that by saying when a herbivore eats from a plant, It only recieves 10%.

Explanation:

1. The materials are physically combined because all of the materials including the sand, salt, and iron fillings are their own substances and they maintain their original form. This is a mixture and they aren't chemically combined.

2. To separate each of the materials physical means would be used because since they're their own individual substances and have kept their original form they're mixed and not chemically combined.

3. The iron and oxygen atoms in rust are chemically combined because they are no longer individual substances and haven't kept their original form, so therefore they're a chemical combination.

Answer: Reason Why

Explanation: A bigger target is easier to hit than a small one, and a big island is more likely to have species land on it by chance than a small one is. Larger islands have more space than smaller islands, so there are likely to be more resources available for species to use. The opposite is true for smaller islands.