The process of moving water through a plant by transpiration works because water molecules stick to each other with
A. turgor pressure.
B. osmosis.
C. ionic bonds.
D. adhesion.
E. hydrogen bonds.
E. hydrogen bonds.
Cohesion is the attraction of one water molecule to another. This attraction is caused by the formation of hydrogen bonds. Water is a polar molecule which means that part of the molecule has a weak positive charge and part of it has a weak negative charge. When the positive charge on one water molecule is attracted to a weak negative charge on another water molecule, a hydrogen bond forms.
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Is natural selection the same thing as evolution?
A. Yes, they are the same because they both change populations. B. No, they are not the same because natural selection works on individuals, whereas evolution is change in populations. C. Yes, they are the same because they both involve phenotypes and genotypes. D. No, they are not the same because natural selection has never been observed.
Cells with ____ are able to harvest the greatest amount of energy from electrons
a. double membranes b. photosystems c. cytochromes d. chloroplasts e. nuclei
Genomic anticipation refers to observations that a genetic disorder occurs at an earlier age in successive generations, whereas genetic imprinting occurs when gene expression varies depending on parental origin
Indicate whether the statement is true or false
You come across an organism that you are trying to classify. You know it is a heterotroph and is multicellular, however, in its current state, it is not moving. You have narrowed it down to either being a fungus or an animal, but you are leaning towards fungus. Is this a correct conclusion?
A. Yes, because the traits are consistent with fungus, especially because it is not moving. B. No, because not all animals move when they are adults. C. No, because fungi are autotrophs. D. Yes, because animals are single celled.