Well, to be fair, this is a bit of a tough question because it's in question by some of the leading microbiologists right now.
But one argument for this is their ability to reproduce. Note that one of the leading arguments for something to be alive is that they are subject to evolution and hence natural selection: the statements for which argue that there has to be differentiation within a species (meaning there has to be different forms of each virus within a type of virus) and there has to be reproduction-- which is where the problem comes along (because viruses could only reproduce while in a host). So one argument that can be made that they are in-fact alive, is that they reproduce and is subject to evolution.
Do know however that this is HIGHLY controversial-- and if your teacher asks it, it's most likely not a right-or-wrong answer
If he does do it that way, maybe you could show off your brainy-bio knowledge by explaining to him why it shouldn't be so!
A streamlined body is a body that is shaped to specifically reduce friction drag when moving.
Flippers and flattened tails are used to propel an animal through the water.
A smooth, almost gutless body is light, which is important when animals have to go through water quickly.
A thick layer of blubber is only used for insulation, and would hamper an animal's progress through water due to its weight.
The answer is B. thick layer of blubber.
Number 39) is Keratin. and 40) is either c or d im not quite sure sorry
Answer:
This question is incomplete as it lacks options. However, it can be answered based on general knowledge of the DNA structure.
Hydrogen bonds in a DNA are located between the nucleotides that holds the double stranded DNA molecules.
Explanation:
Deoxyribonucleic acid (DNA) is the genetic material in living cells. The DNA molecule is made up of nucleotides monomers. However, since the DNA molecule is double-stranded, the nucleotides are of two chains composed of four nucleotide subunits viz: Adenine (A), Thymine (T), Guanine (G) and Cytosine (C).
The two chains of nucleotides in a DNA molecule are called strands. Each strand is bonded to one another by the nucleotides using complementary base pairing i.e. A-T, G-C. The bonds between the nucleotidew of each strand is called HYDROGEN BOND.
Hence, HYDROGEN BONDS in a DNA molecule is located in between two nucleotides of each strand. That is, hydrogen bond holds Adenine to Thymine and Guanine to Cytosine.
Answer:
meiosis
Explanation:
When cells divide during meiosis, homologous chromosomes are randomly distributed during anaphase I, separating and segregating independently of each other. This is called independent assortment.
