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Questions in biology

[Homework Help] What is an independent variable? A. the factor that is changed in an experiment B. the educated guess C. the proposed answer to the question D. the experiment that the scientist regulates

[Homework Help] Cellular respiration is a process involving the breakdown of glucose molecules in order to generate energy for cellular activities. Given the general reaction below, which of the following best describes the products labeled $x$ and $y$? $C_6 H_{12} O_6+O_2 \rightarrow x_{-}+y_{-}+\text {energy }$ A. The products are CO (carbon monoxide) and $H _2 O _2$ (hydrogen peroxide), which then decompose into carbon dioxide $\left( CO _2\right)$ and water $\left( H _2 O \right)$. B. The products are $H _2 O$ (water) and $CO _2$ (carbon dioxide), which then undergo anaerobic respiration. C. The products are $CO _2$ (carbon dioxide) and $H _2 O$ (water), which then become the reactants for photosynthesis. D. The products are $O _2$ (oxygen) and $H _2 O$ (water), which are then used for growth and to keep the organism hydrated.

[Homework Help] Which statement about cellular respiration is true? A. It produces oxygen. B. It requires water. C. It is used by every living cell. D. It converts energy to food.

[Homework Help] This part of the brain is said to be linked to ADHD/ADD. A. corpus callosum B. thalamus C. cerebellum D. reticular formation

[Homework Help] A vaccine containing an inactive pathogen is injected into a person. The vaccine causes the body to react and create _________. What word completes this sentence?

[Homework Help] What term is used to describe an organism's ability to pass on genetic traits to offspring? A. Reproductive success B. Group behavior C. Structural adaptation D. Population growth

[Homework Help] Select all that apply. Which statements characterize endosteum? ☐ It is active during bone repair ☐ It covers the diaphysis of a bone ☐ It lines medullary cavities ☐ It contains osteoblasts

[Homework Help] What term describes the brain's ability to adapt and reorganize? A. Neuroplasticity B. Neurogenesis C. Synaptic pruning D. Lateralization

[Homework Help] Which of the following statements about enzymes is TRUE? A. An enzyme is used up after a reaction and cannot be used again. B. Enzymes bind to specific substrates at an active site which undergoes "induced fit." C. Enzymes work by increasing the activation energy of a reaction. D. All enzymes function at the same temperature and pH level.

[Homework Help] Which of the following movements propels food along the GI tract? A. Mixing B. Churning C. Segmentation D. Peristalsis