An enzyme is a special type of protein molecule. Intestinal cells produce digestive enzymes that break down food. These enzymes are not produced by blood cells. Which statement best explains why? A. The genes for the digestive enzymes are expressed in both intestinal cells and blood cells. B. ...
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December 2022
Which type of plates slide past each other in opposite directions? A. opposite B. transform C. subduction D. divergent
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December 2022
Which statement describes a shield volcano? A. formed from repeated non-explosive eruptions of flowing lava B. formed from a single explosive eruption of flowing lava C. formed from a single non-explosive eruption of flowing lava D. formed from repeated explosive eruptions of flowing lava
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December 2022
What type of seismic waves travel through Earth? A. body waves B. silent waves C. surface waves D. ground waves
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December 2022
Which wave is a body wave? A. P wave B. L wave C. B wave D. T wave
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December 2022
Place the steps for the formation of the enzyme pepsinogen in the correct order. 1. The DNA strands unwind, and RNA polymerase binds to the template strand. 2. The mRNA undergoes intron splicing and exits the nucleus. 3. The tRNA moves through mRNA with the activated amino acids attached to...
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December 2022
An individual with a protein deficiency typically experiences increased susceptibility to illnesses, muscle and joint pain, and difficulty concentrating. Why does a protein deficiency cause such diverse symptoms? A. because the only role of proteins is to provide the enzymes that all cells need to function B. because...
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December 2022
Arrange the events of meiosis I of an animal cell in the correct order. 1. Microtubules pull apart the homologous pairs toward opposite poles. 2. Cytoplasm pinches inward near the cell furrow. 3. DNA condenses into chromosomes. 4. Nuclear envelopes develop around the nuclei. 5. Homologous pairs align to initiate...
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December 2022
Embryonic stem cells are cells derived from an embryo. These cells can be used to create new tissues for patients suffering from certain illnesses and disorders. Which statement best summarizes why the use of embryonic stem cells could be seen as unethical? A. Some people consider embryos to possess rights...
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December 2022
Lily is researching the light-sensing rod cells of the eye. She decides to use stem cells to produce new rod cells. Which statement best explains why Lily is using stem cells for this purpose?
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December 2022
Lily visits her family doctor. He tells her that the upset stomach she experiences after drinking milk is caused by too little lactase, an enzyme that breaks down a sugar in milk into monosaccharides. Which monosaccharides form from this reaction? A. Two lactose molecules. B. Two glucose molecules....
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December 2022
The collision of two tectonic plates produces a volcano. What types of plates could be involved? A. Two seafloor plates B. A seafloor plate and one continental plate C. two continental plates D. both A and B are correct
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December 2022
Chemical weathering is noted by which of the following A. does not change the appearence B. changes the appears C. changes the chemical makeup of the rock D. turns the rock into a carbon based compound
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December 2022
Sort the given molecules into organic and inorganic substances. C3N2H4 AlBr3 C6H5F CrO3 H2O2 C12H22O11
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December 2022
Why might two elements possess similar chemical properties? A. They belong to the same group of the periodic table. B. They have the same physical state. C. They have similar physical properties. D. They belong to the same period of the periodic table.
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December 2022
Arrange the cells in order from least specialized to most specialized. 1. cells of the mesoderm 2. cells of a zygote 3. cells of a blastocyst 4. cells of the heart
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December 2022
Which organ is derived from the mesoderm layer of the gastrula? A. The Brain B. The Heart C. The Liver D. The Skin
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December 2022
Which statement best defines micronutrients? A. Micronutrients can be synthesized only by microbial organisms. B. Micronutrients are required by the body in small quantities. C. Micronutrients are essential only for infants and children. D. Micronutrients are naturally made by the body.
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December 2022
Which type of wave is a secondary wave? A. body B. surface C. transverse D. subduction
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December 2022
Which type of seismic wave travels only through solids? A. P wave B. longitudinal wave C. S wave D. compressional wave E. circular wave