Problem:OPTIONS:
- number of the forces
- arguing forces
- group of forces
- sum of the forces

Answer the following question given this paragraph: Two forces may act on an object in the same direction. You can see an example of this in Figure below . After the man on the left lifts up the couch, he will push the couch to the right with a force of 25 newtons. At the same time, the man to the right is pulling the couch to the right with a force of 20 newtons. When two forces act in the same direction, the net force is equal to the sum of the forces. This always results in a stronger force than either of the individual forces alone. In this case, the net force on the couch is 45 newtons to the right, so the couch will move to the right. Q: What is the net force when two forces act in the same direction? A:
****
A: sum of the forces

Answer the following question given this paragraph: Try your hand at diagnosing an allergic reaction by selecting one of the interactive case studies (http://openstaxcollege. org/l/world_allergy) at the World Allergy Organization website. Autoimmunity Autoimmunity is a type of hypersensitivity to self-antigens that affects approximately five percent of the population. Most types of autoimmunity involve the humoral immune response. An antibody that inappropriately marks self-components as foreign is termed an autoantibody. In patients with myasthenia gravis, an autoimmune disease, muscle-cell receptors that induce contraction in response to acetylcholine are targeted by antibodies. The result is muscle weakness that may include. Q: What is the term for an antibody that inappropriately marks self-components as foreign? A:
OPTIONS:
- rogue antibody
- compromised antibody
- autoimmune antibody
- autoantibody
autoantibody

Answer the following question given this paragraph: Did you ever hear of hay fever? It's not really a fever at all. It's an allergy to plant pollens. People with this type of allergy have symptoms such as watery eyes, sneezing, and a runny nose. A common cause of hay fever is the pollen of ragweed. Many people are also allergic to poison ivy ( Figure below ). Skin contact with poison ivy leads to an itchy rash in people who are allergic to the plant. Q: Hay fever is actually an allergy to what substance, vital to plant reproduction? A:
OPTIONS:
- nitrogen
- fungi
- grass
- pollen

Answer: pollen

Question: Answer the following question given this paragraph: Since life began on Earth, there have been several major mass extinctions. If you look closely at the geological time scale, you will find that at least five major mass extinctions have occurred in the past 540 million years. In each mass extinction, over 50% of animal species died. The total number of mass extinctions could be as high as 20. Q: What events, resulting in death of over half of animal species, have occurred on earth at least five times in the past 540 million years? A:
OPTIONS:
- mass migrations
- microevolutions
- spontaneous mutations
- mass extinctions
Answer: mass extinctions

input with options: Answer the following question given this paragraph: Ray-finned fish include the majority of living fish species, including goldfish, tuna, salmon, perch, and cod. They have a bony endoskeleton and a swim bladder. Their thin fins consist of webs of skin over flexible bony rays, or spines. The fins lack muscle, so their movements are controlled by muscles in the body wall. You can compare their ray fins with the fleshy fins of lobe-finned fish in Figure below . Q: What type of fish are the majority of living species? A:
OPTIONS:
- cartilaginous fish
- freshwater fish
- lungfish
- ray-finned fish
output: ray-finned fish

Problem: OPTIONS:
- gametes
- humanoid
- meiosis
- haploid
Q: Answer the following question given this paragraph: The sporophyte produces haploid spores. The rhizoid buds to form a mature gametophyte. The zygote is housed in the venter. Figure 25.21 Which of the following statements about the fern life cycle is false? a. Sporangia produce haploid spores. The sporophyte grows from a gametophyte. The sporophyte is diploid and the gametophyte is haploid. Sporangia form on the underside of the gametophyte. Q: In some plants, the sporophyte is diploid, while the gametophyte is what? A:
Answer:
haploid