Biology, 11.04.2020 04:47 spacehunter22
Although choanoflagellates are fundamentally unicellular organisms, they possess genes that code for cadherins and integrins. Which of the following hypotheses regarding the function of these molecules in choanoflagellates is supported by laboratory experiments?
a. Cadherins and integrins are used for cell adhesion during the formation of temporary multicellular structures to defend against predators.
b. The genes are not actually expressed and are simply vestiges of an ancestor that used cadherins and integrins for adhesion.
c. Cadherins and integrins are used for cell adhesion during the formation of complex multicellular structures that are resistant to freezing temperatures.
d. Choanoflagellates use adhesion molecules to help capture bacterial prey.
e. Choanoflagellates are parasites and use cadherins to attach to host organisms.
Answers: 1
Biology, 22.06.2019 05:30
Which statement describe events that occur during interphase?
Answers: 2
Biology, 22.06.2019 21:00
Me asap i need during photosynthesis, the following reaction takes place: carbon dioxide + water + light energy → sugar + oxygen during cellular respiration, the following reaction takes place: sugar + oxygen → carbon dioxide + water + chemical energy given this information, how are photosynthesis and cellular respiration related? question 2 options: a the products of photosynthesis are the reactants of cellular respiration. b photosynthesis and cellular respiration both start with the same materials. c photosynthesis and cellular respiration both produce the same materials. d the same type of energy is found in both photosynthesis and cellular respiration.
Answers: 1
Biology, 22.06.2019 21:00
Some steps in cell division are shown below: 1. chromosomes condense and pair up 2. segments of dna of sister chromatids twist and cross 3. exchange of dna occurs between chromosomes 4. four daughter cells are created that are haploid which of the following steps is least likely to occur during meiosis 1?
Answers: 1
Although choanoflagellates are fundamentally unicellular organisms, they possess genes that code for...
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