Answer:
Controlling the proteins in an organism controls the organism's characteristics because proteins are enzymes, and enzymes catalyze and regulate chemical reactions, and therefore can control certain traits such as color, shape, or even gender.
Explanation:
Answer;
Seedless plant.
The fossil of a plant reveals that it produced spores that were used for reproduction. It was a seedless plant.
Explanation;
-Seedless vascular plants are plants such as fern and horsetails, liverworts, mosses; which contain vascular tissues, but do not produce flowers or seed.
-These plants reproduce using haploid , unicellular spores instead of seeds.
-These plants have life cycles with two distinct stages; one in which spores are produced and one in which sex cells are produced.
Exercise increase oxygen intake by the cells as it increases blood flow. the correct option is A.
Thus, Exercise improves blood flow, which in turn enhances cellular oxygen uptake. Our heart rates increase and more blood is pushed through the body while we exercise.
The cells receive more oxygen thanks to the increased blood flow, which enables them to fulfill the higher energy demands of physical exercise.
Carbon monoxide does not increase oxygen intake during exercise and instead is a harmful chemical that hinders the body's ability to transfer oxygen.
Thus, Exercise increase oxygen intake by the cells as it increases blood flow. the correct option is A.
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The main reason that the spores of disease-causing bacteria are dangerous is that they are very difficult to destroy. If the bacteria is not suited in the condition state of the environmental, other kinds transform to an inactive state. They advance with a hard outer covering and look out for the suitable environmental conditions. This lie dormant bacterium is known as spores. Spores are more difficult to destroy than those bacteria that are active for they have a harder outer covering.
Answer:
c
Explanation:
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