Q: Water molecules are polar, so they form what type of bonds? Read this paragraph and choose the correct option from the provided answers: Water molecules are polar, so they form hydrogen bonds. This gives water unique properties, such as a relatively high boiling point, high specific heat, cohesion, adhesion and density. Choices: - carbon - oxygen - helium - hydrogen A:
hydrogen

Q: Acids and bases are important in living things because what proteins typically can perform their job only at a certain level of acidity? Read this paragraph and choose the correct option from the provided answers: Acids and bases are important in living things because most enzymes can do their job only at a certain level of acidity. Cells secrete acids and bases to maintain the proper pH for enzymes to work. For example, every time you digest food, acids and bases are at work in your digestive system. Consider the acidic environment of the stomach. The acidic environment helps with the digestion of food. The enzyme pepsin, which helps break down proteins in the stomach can only function optimally in the low pH environment. The stomach secretes a strong acid that allows pepsin to work, and the stomach to do its job. However, when stomach contents enter the small intestine, the acid must be neutralized. This is because enzymes in the small intestine need a basic environment in order to work. An organ called the pancreas secretes a strong base into the small intestine, and this base neutralizes the acid. Choices: - hormones - vitamins - catalysts - enzymes A:
enzymes

Q: Q: Electrons are not shared equally between the two atoms in which type of covalent bonds? Read this paragraph and choose the correct option from the provided answers: In polar covalent bonds, electrons are not shared equally between the two atoms, so one atom is slightly negative in charge and one is slightly positive in charge. In nonpolar covalent bonds, electrons are shared equally so the atoms remain neutral in charge. Choices: - wide - narrow - solar - polar A:
A: polar

Question: Q: The radiocarpal and midcarpal joints are responsible for all movements of the hand and what other part of the body? Read this paragraph and choose the correct option from the provided answers: The carpal bones form the base of the hand. This can be seen in the radiograph (X-ray image) of the hand that shows the relationships of the hand bones to the skin creases of the hand (see Figure 8.8). Within the carpal bones, the four proximal bones are united to each other by ligaments to form a unit. Only three of these bones, the scaphoid, lunate, and triquetrum, contribute to the radiocarpal joint. The scaphoid and lunate bones articulate directly with the distal end of the radius, whereas the triquetrum bone articulates with a fibrocartilaginous pad that spans the radius and styloid process of the ulna. The distal end of the ulna thus does not directly articulate with any of the carpal bones. The four distal carpal bones are also held together as a group by ligaments. The proximal and distal rows of carpal bones articulate with each other to form the midcarpal joint (see Figure 8.8). Together, the radiocarpal and midcarpal joints are responsible for all movements of the hand at the wrist. The distal carpal bones also articulate with the metacarpal bones of the hand. Choices: - fingers - foot - shoulder - wrist A:
Answer: wrist

*Question*
Q: How many lobes is each hemisphere of the cerebrum divided into? Read this paragraph and choose the correct option from the provided answers: Each hemisphere of the cerebrum is divided into four parts, called lobes. The four lobes are the:. Choices: - 9 - 2 - 5 - 4 A:
**Answer**
4

Q: If you were to filter out all the cells in blood, you would be left with what golden-yellow liquid? Read this paragraph and choose the correct option from the provided answers: If you were to filter out all the cells in blood, a golden-yellow liquid would be left behind. Plasma is this fluid part of the blood. Plasma is about 90% water and about 10% dissolved proteins, glucose, ions, hormones, and gases. Blood is made up mostly of plasma. Choices: - platelets - pus - hemoglobin - plasma A:
plasma