What is the primary source of fuel for the brain?

a. proteins

b. fats

c. carbohydrates

d. vitamins

Zara is an excellent violin player. Which part of her brain is responsible for the motor skills involved in playing a violin

The Northern Hemisphere receives more solar energy during one half the year than it does during the other half of the year. Which of the following happens during the year toexplain this? 1. 2. 3. 4. The angle that Earth is tilted on itsaxis changes.

Which phrase best describes homeostasis? (A) The cell keeps more molecules inside the membrane. (B) The cell keeps molecules balanced inside and out. (C) The cell does not allow molecules to cross the membrane.

Autosomes 1. are the class of unicellular organisms that reproduce via binary fission. 2. are organelles that carry waste from the cytoplasm to the cell wall. 3. are circular chromosomes that can be transferred between some prokaryotes. 4.

Which best matches the plant tissue to its function?

Norway rats have 42 chromosomes in their diploid cells. If a diploid rat cell enters meiosis, how many chromosomes and double-helical molecules of DNA will be present in each daughter cell at the end of meiosis II?

Which discovery is attributed to Phoebus Levene? A. extraction and observation of DNA B. identification of ribose and deoxyribose C. recognition of RNA as DNA's messenger D. construction of an accurate DNA model

A small population of chimpanzees lives in a habitat that undergoes no changes for a long period. how will genetic drift probably affect this population?

Which type of cells can differentiate into many different types of cells? select all that apply

A person has such severe epilepsy that his limbs are paralyzed, and doctors recommend a radical hemispherectomy. what results can he expect?