A vessel that carries blood back to the heart is a(n) A) artery B) capillary C) vein D) arteriole

Answers

Answer 1
Answer: Veins bring the blood from the body to the heart.

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Which molecule is classified as organic? A) water B) oxygen C) protein D) sodium chloride

Answers

Answer:

The right answer to this question is option C. Protein

Explanation:

       First, what is an organic molecule? It's a molecule that contains Carbon in its composition, and by that, we'll jump into the options on the question. The first one is water, but as you can remember, there's no carbon in water's composition, only oxygen and hydrogen, so this is not a good option. The next one is oxygen, there's no carbon here too, so this is not good either. The last one it sodium chloride, and this one has no carbon either, only sodium and chlorine.

the answer is C. Protein

Chemical composition describes? A. The types of atoms that make up a sample of matter B. The arrangement in a sample of matter c. All of the above

Answers

The right answer is A.

Since matter is generally composed of several pure bodies (chemical compounds and simple bodies), the chemical composition of a product furnishes the quantity or proportion of each of the pure substances which compose it; they are generically called components.

For answer B it is rather the definition of a chemical structure, it refers to both its molecular topology, its geometry (molecular geometry or space group for a crystal) and its electronic structure.

C.) All of the above ............

How is human impact on the tundra and the rainforests similar?

Answers

The human impact on the tundra and the rainforests have been negative to say the least. The destruction of wild habitat and increased pollution due to logging, mining etc have negatively affected the animals living in that region. Deforestation and habitat loss due to farming and oil exploration has increased the pollution level in these regions.

The evolutionary advantage depicted by the rabbit in the picture isA) mimicry.
B) warning coloration.
C) adaptive radiation.
D) protective coloration

Answers

The evolutionary advantage depicted by the rabbit in the picture is D) protective coloration, since it changed its color to white, in order to adapt and protect itself. 

D) protective coloration sssssssssssssssssssssssssss

Choose the smallest of the following units:Group of answer choices
Mm
cm
m
kM

Answers

The smallest unit among the options is mm(Millimeters). Thus, option a) is the answer.

The smallest unit among the options is "a) mm," which stands for millimeter. It's a metric unit of length that is one-thousandth of a meter (1/1000). Millimeters are commonly used for precise measurements, especially in fields like engineering, science, and manufacturing, where accuracy is crucial.

Centimeters (cm) are larger than millimeters, with one centimeter being equal to 10 millimeters. Meters (m) are even larger, being the base unit of length in the metric system. Kilometers (km) are the largest unit among the options, equivalent to 1000 meters.

In summary, when comparing the given options, millimeters are the smallest unit of length, followed by centimeters, meters, and then kilometers, with each subsequent unit being larger by factors of 10.

The correct option is : a) mm.

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Answer:

The the smallest unit among the options provided is mm (millimetre).

Explanation:

mm (millimetre) is a metric unit of length equal to one-thousandth (1/1000) of a metre.


cm (centimetre) is equal to one-hundredth(1/100) of a metre. It is a subunit of length is the SI Sytem. It is used to measure small lengths.


m (metre) is the distance that light travels in vaccum in 1/299792458 seconds. It is the fundamental building block in metric system and is universally accepted.


km (kilometre) is equal to 1000 metres. It is commonly used to measure longer distances.


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Given the following DNA strand which of the following is it’s complementary MRNA? GGACTGATTA. C C U G A C U A A
B. C C T G A C T A A
C. G G A C T G A T T
D. T T A G T C A G G

Answers

The following DNA strand "GGACTGATT" has the complementary mRNA strand "CCUGACUAA". Thus, the correct option is A.

What is mRNA?

An mRNA is a type of RNA which is found inside cells. mRNA is also known as messenger RNA. The mRNA molecules carry genetic information which is required to make proteins in the cell. They carry the information from DNA in the nucleus of the cell to the cytoplasm where the proteins are synthesized.

The mRNA synthesized complementary to the sequence of DNA strand can be determined. As A base pairs with U and vice versa and C base pairs with G and vice versa. Thus, the sequence of mRNA synthesized from the DNA sequence "GGACTGATT" will be "CCUGACUAA".

Therefore, the correct option is A.

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It is A. C C U G A C U A A