A DNA molecule consists of two stands of nucleotides that wind around each other like a twisted ladder with a phosphate and sugar backbone. The nitrogenous bases are divided into two groups called the pyrimidines and the purines. The pyrimidines include the thymine and cytosine, the purines are adenine and guanine. The nitrogenous bases in the double helix are bound together according to the base pairing rule. Adenine pairs with thymine (A-T) and guanine pairs with cytosine (G-C). The student either drew the base pairing showing adenine and thymine or guanine pairing with cytosine.
Answer:i found this on google and got it right
Explanation:
Image result for What is the difference between spindle fibers and spindle microtubules
Spindle fibers are used in cell division, and are made of microtubules. ... As the others have written, microtubules are a “track” that can move organelles around when “motor” proteins (that cleave ATP) pull those organelles. The spindle is what moves the chromosomes during mitosis and meiosis
The process of assembling individual units of a material into highly arranged/ordered structures/patterns is known as self-assembly. Self-assembly processes are enzymes not required.
Self-assembly is the process by which a disordered system of pre-existing components forms an organized structure or pattern as a result of specific, local interactions among the components themselves, without the need for external direction. When the constituents are molecules, the process is known as molecular self-assembly.
What are the types of self-assembly?
Self-assembly is classified into two types: intramolecular self-assembly and intermolecular self-assembly. The term molecular self-assembly most commonly refers to intermolecular self-assembly, whereas folding refers to the intramolecular analog.
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Answer:
Mosses form spores in capsules
Explanation:
Cold air is high density compared to hot air which is less dense
