Digestive enzymes<span> speed up reactions that break down large molecules of carbohydrates, proteins, and fats into smaller molecules the body can use. Without digestive </span>enzymes<span>, animals would not be able to break down food molecules quickly enough to provide the energy and nutrients they </span>need<span> to </span><span>survive</span>
Answer:b. cellulose; cell walls of plants
Explanation: polysaccharides are polymers of monossacharides.they are the most abundant organic substance.it is found in the cell walls of plants . cellulose is a linear polymer of glucose residues.cellulose is an important component in the diet of herbivores and omnivores.they do not produce the cellulase enzyme for digesting cellulose.as a result,they depend on symbiotic relationship with bacteria and protozoa found in their stomach to produce cellulase.
The type of intercellular junction that consists of fused membranes is a(an). tight junction.
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Answer:
Below
Explanation:
Grain germinates in the pollen.
After the pollination, Germinates grain goes off the carpel and grows.
After it is quite grew, it moves down to the ovary.
The pollen tube breaks into the ovule and bursts into the embryo sac.
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