Q: What is the term for the exchange of genetic material between non-sister chromatids of homologous chromosomes? Read this paragraph and choose the correct option from the provided answers: When homologous chromosomes pair up during meiosis I, crossing-over can occur. Crossing-over is the exchange of genetic material between non-sister chromatids of homologous chromosomes. It results in new combinations of genes on each chromosome. Choices: - inheritance - asexual reproduction - meiosis - crossing-over A:
crossing-over

(Question)
Q: What is the name for electrons closer to the nucleus that do not participate in bonding? Read this paragraph and choose the correct option from the provided answers: Core electrons are the electrons that are closer to the nucleus and therefore do not participate in bonding. Choices: - surface electrons - radical electrons - odd electrons - core electrons A:
(Answer)
core electrons

Ques: Q: Chemical digestion in the small intestine cannot occur without the help of the pancreas and what bile-producing organ? Read this paragraph and choose the correct option from the provided answers: 23.6 Accessory Organs in Digestion: The Liver, Pancreas, and Gallbladder Chemical digestion in the small intestine cannot occur without the help of the liver and pancreas. The liver produces bile and delivers it to the common hepatic duct. Bile contains bile salts and phospholipids, which emulsify large lipid globules into tiny lipid droplets, a necessary step in lipid digestion and absorption. The gallbladder stores and concentrates bile, releasing it when it is needed by the small intestine. The pancreas produces the enzyme- and bicarbonate-rich pancreatic juice and delivers it to the small intestine through ducts. Pancreatic juice buffers the acidic gastric juice in chyme, inactivates pepsin from the stomach, and enables the optimal functioning of digestive enzymes in the small intestine. Choices: - kidney - heart - stomach - liver A:
Ans: liver

(Q).
Q: What catalyzes the hydrolysis of amino acids from the n-terminal end of a protein? Read this paragraph and choose the correct option from the provided answers: Pepsinogen is an inactive form of pepsin; pepsin is the active form of the enzyme. Both enzymes catalyze the hydrolysis of peptide bonds. Chymotrypsin catalyzes the hydrolysis of peptide bonds following aromatic amino acids, while trypsin catalyzes the hydrolysis of peptide bonds following lysine and arginine. Aminopeptidase catalyzes the hydrolysis of amino acids from the N-terminal end of a protein, while carboxypeptidase catalyzes the hydrolysis of amino acids from the Cterminal end of a protein. Choices: - synthase - testosterone - nucleic acid - aminopeptidase A:
(A).
aminopeptidase

Ques:Q: The scientific process of collecting data outside the lab (in the "wild") is known as what kind of work? Read this paragraph and choose the correct option from the provided answers: Many Earth scientists collect data in the field, called field work . The data may be from observations or measurements. The scientists may create a geological map of the area. They might write detailed descriptions of the rocks and their relationships. They may collect samples to analyze in the lab. They may do a combination of all of these! Earth science laboratories contain high-tech equipment. That equipment can reveal the chemistry or age of a rock sample. Geologists do field work to look for resources. They may study a region for environmental cleanup. There are many other reasons for going in the field. One common reason is just to understand the region better. Choices: - scientific investigation - experimentation - track work - field work A:

Ans:field work

Question: Q: What type of bonds contain atoms that possess either a partial positive or a partial negative charge? Read this paragraph and choose the correct option from the provided answers: Polar bonds contain atoms that possess either a partial positive or a partial negative charge. Choices: - hot bonds - ionic bonds - geologic bonds - polar bonds A:
Answer:
polar bonds