Answer the following question given this paragraph: Unlike Archaea and eukaryotes, bacteria have a cell wall made of peptidoglycan, comprised of sugars and amino acids, and many have a polysaccharide capsule (Figure 3.5). The cell wall acts as an extra layer of protection, helps the cell maintain its shape, and prevents dehydration. The capsule enables the cell to attach to surfaces in its environment. Some prokaryotes have flagella, pili, or fimbriae. Flagella are used for locomotion, while most pili are used to exchange genetic material during a type of reproduction called conjugation. Q: Unlike archaea and eukaryotes, bacteria have a cell wall made of what? Choices: - substrates - phospholipids - hydrogen - peptidoglycan A:
peptidoglycan
(Question)
Answer the following question given this paragraph: Q: The fossil record indicates that anthropoids began diverging from other primates about how many million years ago? Choices: - 70 - 40 - 60 - 50 A:
(Answer)
50
Ques: Answer the following question given this paragraph: Carbohydrate Digestion The average American diet is about 50 percent carbohydrates, which may be classified according to the number of monomers they contain of simple sugars (monosaccharides and disaccharides) and/or complex sugars (polysaccharides). Glucose, galactose, and fructose are the three monosaccharides that are commonly consumed and are readily absorbed. Your digestive system is also able to break down the disaccharide sucrose (regular table sugar: glucose + fructose), lactose (milk sugar: glucose + galactose), and maltose (grain sugar: glucose + glucose), and the polysaccharides glycogen and starch (chains of monosaccharides). Your bodies do not produce enzymes that can break down most fibrous polysaccharides, such as cellulose. While indigestible polysaccharides do not provide any nutritional value, they do provide dietary fiber, which helps propel food through the alimentary canal. The chemical digestion of starches begins in the mouth and has been reviewed above. In the small intestine, pancreatic amylase does the 'heavy lifting' for starch and carbohydrate digestion (Figure 23.29). After amylases break down starch into smaller fragments, the brush border enzyme -dextrinase starts working on dextrin, breaking off one glucose unit at a time. Three brush border enzymes hydrolyze sucrose, lactose, and maltose into monosaccharides. Sucrase splits sucrose into one molecule of fructose and one molecule of glucose; maltase breaks down maltose and maltotriose into two and three glucose molecules, respectively; and lactase breaks down lactose into one molecule of glucose and one molecule of galactose. Insufficient lactase can lead to lactose intolerance. Q: Making ups about 50 percent of the modern american diet, what food group can be classified according to the number of monomers they contain of simple sugars and/or complex sugars? Choices: - proteins - fats - grains - carbohydrates A:
Ans: carbohydrates
(Q).
Answer the following question given this paragraph: Mutation Mutations are changes to an organism's DNA and are an important driver of diversity in populations. Species evolve because of the accumulation of mutations that occur over time. The appearance of new mutations is the most common way to introduce novel genotypic and phenotypic variance. Some mutations are unfavorable or harmful and are quickly eliminated from the population by natural selection. Others are beneficial and will spread through the population. Whether or not a mutation is beneficial or harmful is determined by whether it helps an organism survive to sexual maturity and reproduce. Some mutations do not do anything and can linger, unaffected by natural selection, in the genome. Some can have a dramatic effect on a gene and the resulting phenotype. Q: What term is used to describe changes to an organism's dna and are an important driver of diversity in populations? Choices: - adaptations - pathogens - evolutions - mutations A:
(A).
mutations
Ques:Answer the following question given this paragraph: Carbon is one of the most common elements found in living organisms. Chains of carbon molecules form the backbones of many organic molecules, such as carbohydrates, proteins, and lipids. Carbon is constantly cycling between living organisms and the atmosphere ( Figure below ). The cycling of carbon occurs through the carbon cycle . Q: Which common element is the most found in living organisms? Choices: - hydrogen - oxygen - monoxide - carbon A:

Ans:carbon
Ques:Answer the following question given this paragraph: The weight of an object is the force pulling the object downward. On Earth, this would be the gravitational force of the Earth on the object. On the moon, this would be the gravitational force of the moon on the object. The gravitational force of the moon is one-sixth the magnitude of the gravitational force of the Earth; the weight of the moon rock on the moon will be one-sixth the weight of the moon rock on the Earth's surface. Weight is measured in force unitsnewtonsby a calibrated spring scale as shown here. Q: What is the force pulling an object downward called? Choices: - momentum - density - magnetism - weight A:

Ans:
weight