Answer the following question given this paragraph: The somatic nervous system also controls some unconscious movements, called reflexes. A reflex is a very rapid motor response that is not directed by the brain. In a reflex, nerve impulses travel to and from the spinal cord in a reflex arc , like the one in Figure below . In this example, the person jerks his hand away from the flame without any conscious thought. It happens unconsciously because the nerve impulses bypass the brain. Q: What is the term for the unconscious movements controlled by the somatic nervous system? Choices: - senses - mechanisms - tremors - reflexes A:
reflexes
(Question)
Answer the following question given this paragraph: Q: In mismatch repair, other enzymes remove and replace incorrectly paired nucleotides that have resulted from what? Choices: - typing errors - interaction errors - evolution errors - replication errors A:
(Answer)
replication errors
Ques: Answer the following question given this paragraph: Brewers of beer and wine use yeast to add alcohol to beverages. Traditional varieties of yeast not only make but also limit the quantity of alcohol in these beverages, because above 18% by volume, alcohol becomes toxic to the yeast itself. Wine is produced by fermentation of the natural sugars present in grapes and other kinds of fruit. Beer, whiskey, and vodka are produced by fermentation of grain starches that have been converted to sugar by the enzyme amylase, and rum is produced by fermentation of sugarcane. In each of these fermentations, sugars are converted into small amounts of ATP, using and regenerating NAD + in the process, and producing ethanol and carbon dioxide. Scientists have recently developed new strains of yeast which can tolerate up to 25% alcohol by volume. These are used primarily in the production of ethanol fuel. Q: Why do beer brewers add yeast to the wort? Choices: - reduce alcohol - add carbonation - increase longevity - to make alcohol A:
Ans: to make alcohol
(Q).
Answer the following question given this paragraph: Primary pollutants enter the air directly. Some are released by natural processes, like ash from volcanoes. Most are released by human activities. Carbon oxides are released when fossil fuels burn. Q: What type of pollutants enter the air directly? Choices: - secondary - liquid - carbon - primary A:
(A).
primary
Ques:Answer the following question given this paragraph: In seedless vascular plants such as ferns, the sporophyte releases spores from the undersides of leaves. Q: In seedless vascular plants such as ferns, the sporophyte releases spores from the undersides of what basic plant structures? Choices: - roots - fruits - stems - leaves A:

Ans:leaves
Ques: Answer the following question given this paragraph: Structure of a Typical Leaf Each leaf typically has a leaf blade called the lamina, which is also the widest part of the leaf. Some leaves are attached to the plant stem by a petiole. Leaves that do not have a petiole and are directly attached to the plant stem are called sessile leaves. Small green appendages usually found at the base of the petiole are known as stipules. Most leaves have a midrib, which travels the length of the leaf and branches to each side to produce veins of vascular tissue. The edge of the leaf is called the margin. Figure 30.21 shows the structure of a typical eudicot leaf. Q: Some leaves are attached to the plant stem by a petiole. leaves that do not have a petiole and are directly attached to the plant stem are called this? Choices: - sheath leaves - globular leaves - transverse leaves - sessile leaves A:
Ans:
sessile leaves