Answer the following question given this paragraph: Several lines of evidence support that chlorarachniophytes evolved from secondary endosymbiosis. The chloroplasts contained within the green algal endosymbionts still are capable of photosynthesis, making chlorarachniophytes photosynthetic. The green algal endosymbiont also exhibits a stunted vestigial nucleus. In fact, it appears that chlorarachniophytes are the products of an evolutionarily recent secondary endosymbiotic event. The plastids of chlorarachniophytes are surrounded by four membranes: The first two correspond to the inner and outer membranes of the photosynthetic cyanobacterium, the third corresponds to the green alga, and the fourth corresponds to the vacuole that surrounded the green alga when it was engulfed by the chlorarachniophyte ancestor. In other lineages that involved secondary endosymbiosis, only three membranes can be identified around plastids. This is currently rectified as a sequential loss of a membrane during the course of evolution. The process of secondary endosymbiosis is not unique to chlorarachniophytes. In fact, secondary endosymbiosis of green algae also led to euglenid protists, whereas secondary endosymbiosis of red algae led to the evolution of dinoflagellates, apicomplexans, and stramenopiles. Q: The chloroplasts contained within the green algal endosymbionts still are capable of what process associated with plants? Choices: - germination - respiration - reproduction - photosynthesis A:
photosynthesis
Answer the following question given this paragraph: The new cells gradually move up through the epidermis toward the surface of the body. As they move, they produce the tough, fibrous protein called keratin. Q: What is the most common cause of lung cancer? Choices: - coal smoke exposure - restaurant smoke exposure - tree smoke exposure - tobacco smoke exposure A:
tobacco smoke exposure
Q: Answer the following question given this paragraph: There are a variety of types of mutations. Two major categories of mutations are germline mutations and somatic mutations. Q: What are two major categories of mutations? Choices: - homologous and somatic - german and somatic - plasticity and somatic - germline and somatic A:
A: germline and somatic
Question: Answer the following question given this paragraph: Water and carbon dioxide molecules are reactants in the process of photosynthesis. Does this mean they are "food" for plants, algae, and blue-green bacteria? Use the definition of "food" to answer this question. Q: Water and carbon dioxide molecules are reactants in what plant process? Choices: - digestion - breathing - glycolysis - photosynthesis A:
Answer: photosynthesis
*Question*
Answer the following question given this paragraph: Near the time of birth, the amniotic sac breaks in a gush of liquid. Labor usually begins within a day of this event. Labor involves contractions of the muscular walls of the uterus. With the mother's help, the contractions eventually push the fetus out of the uterus and through the vagina. Q: What helps push the fetus from the uterus during birth? Choices: - glands - tremors - Shaking - contractions A:
**Answer**
contractions
Answer the following question given this paragraph: This tissue includes several types of specialized cells. Pavement cells, large, irregularly shaped parenchymal cells which lack chloroplasts, make up the majority of the epidermis. Within the epidermis, thousands of pairs of bean-shaped schlerenchymal guard cells swell and shrink by osmosis to open and close stomata , tiny pores which control the exchange of oxygen and carbon dioxide gases and the release of water vapor. The lower surfaces of some leaves contain as many as 100,000 stomata per square centimeter. Q: Pavement cells, large, irregularly shaped parenchymal cells which lack chloroplasts, make up the majority of what? Choices: - dermis - layers - Skin - epidermis A:
epidermis