Answer the following question given this paragraph: Q: What do male cones in seed plants contain? Choices: - nutrients - spores - nitrogen - pollen A:
pollen
Answer the following question given this paragraph: Different types of bacteria stain a different color when Gram stain is applied to them. This makes them easy to identify. Some stain purple and some stain red, as you can see in Figure below . The two types differ in their outer layers. This explains why they stain differently. Q: What is a gram stain used to identify ? Choices: - radioactivity - acids or bases - different types of liquids - different types of bacteria A:
different types of bacteria
Q: Answer the following question given this paragraph: Chapter 21 1 The three main components are the lymph vessels, the lymph nodes, and the lymph. 3 The bacterium is digested by the phagocyte's digestive enzymes (contained in its lysosomes). 5 B 7 C 9 A 11 D 13 C 15 B 17 B 19 D 21 D 23 B 25 C 27 B 29 C 31 D 33 A 35 B 37 B 39 The lymph enters through lymphatic capillaries, and then into larger lymphatic vessels. The lymph can only go in one direction due to valves in the vessels. The larger lymphatics merge to form trunks that enter into the blood via lymphatic ducts. 41 Interferons are produced in virally infected cells and cause them to secrete signals for surrounding cells to make antiviral proteins. C-reactive protein is induced to be made by the liver and will opsonize certain species of bacteria. 43 Antigen-specific clones are stimulated as their antigen receptor binds to antigen. They are then activated and proliferate, expanding their numbers. The result is a large number of antigen-specific lymphocytes. 45 IgM is an antigen receptor on naive B cells. Upon activation, naive B cells make IgM first. IgM is good at binding complement and thus has good antibacterial effects. IgM is replaced with other classes of antibodies later on in the primary response due to class switching. 47 Tuberculosis is caused by bacteria resistant to lysosomal enzymes in alveolar macrophages, resulting in chronic infection. The immune response to these bacteria actually causes most of the lung damage that is characteristic of this life-threatening disease. 49 Antibody response to the cell walls of -Streptococcus cross-reacts with the heart muscle. Complement is then activated and the heart is damaged, leading to abnormal function. Tolerance is broken because heart myosin antigens are similar to antigens on the - Streptococcus bacteria. Q: Interferons are produced in virally infected cells and cause them to secrete signals for surrounding cells to make what? Choices: - overwhelm proteins - resist proteins - Raising Proteins - antiviral proteins A:
A: antiviral proteins
Question: Answer the following question given this paragraph: The rise in greenhouse gases due to human actions is too much of a good thing. It increases the greenhouse effect and causes Earth's average temperature to rise. Rising global temperatures, in turn, are melting polar ice caps and glaciers. Figure below shows how much smaller the Arctic ice cap was in 2012 than it was in 1984. With more liquid water on Earth's surface, sea levels are rising. Q: The rise in greenhouse gases has what effect on the temperature of earth? Choices: - no effect - more moderate - it drops - it increases A:
Answer: it increases
*Question*
Answer the following question given this paragraph: Describe ways protists are important to humans. Q: All chemical changes involve a transfer of what? Choices: - pressure - fuel - oxygen - energy A:
**Answer**
energy
Q: Answer the following question given this paragraph: Weight is a measure of the force of gravity pulling down on an object. It depends on the object's mass, which is how much matter the object contains. It also depends on the downward acceleration of the object due to gravity, which is the same all over Earth. Weight can be represented by the equation:. Q: What is the term for the measure of the force of gravity pulling down on an object? Choices: - mass - density - pressure - weight A:
A: weight