Answer the following question given this paragraph: Q: Signals from rods and cones can follow several different pathways in what structure of the eye? Choices: - aperture - aqueous humor - lens - retina A:
retina
(Question)
Answer the following question given this paragraph: So how is the blood kept from flowing back on itself? Valves ( Figure below ) in the heart keep the blood flowing in one direction. The valves do this by opening and closing in one direction only. Blood only moves forward through the heart. The valves stop the blood from flowing backward. There are four valves of the heart. Q: How many valves are in the heart? Choices: - one - six - two - four A:
(Answer)
four
Ques: Answer the following question given this paragraph: Q: Metabolism is the collection of what that occur in an organism? Choices: - mechanical reactions - growth reactions - mineral reactions - chemical reactions A:
Ans: chemical reactions
(Q).
Answer the following question given this paragraph: During asexual reproduction, fungi produce haploid spores by mitosis of a haploid parent cell. A haploid cell has just one of each pair of chromosomes. The haploid spores are genetically identical to the parent cell. Spores may be spread by moving water, wind, or other organisms. Wherever the spores land, they will develop into new hyphae only when conditions are suitable for growth. Q: During asexual reproduction, fungi produce haploid spores by what process involving a haploid parent cell? Choices: - osmosis - evaporation - divergence - mitosis A:
(A).
mitosis
Ques:Answer the following question given this paragraph: Water treatment is a series of processes that remove unwanted substances from water. The goal of water treatment is to make the water safe to return to the natural environment or to the human water supply. Treating water for other purposes may not include all the same steps. That's because water used in agriculture or industry may not have to be as clean as drinking water. Q: What is a series of processes that remove unwanted substances from water called? Choices: - water filtration - water dilution - water cleaning - water treatment A:

Ans:water treatment
Ques:Answer the following question given this paragraph: Peroxisomes Peroxisomes are small, round organelles enclosed by single membranes. They carry out oxidation reactions that break down fatty acids and amino acids. They also detoxify many poisons that may enter the body. Alcohol is detoxified by peroxisomes in liver cells. A byproduct of these oxidation reactions is hydrogen peroxide, H2O2, which is contained within the peroxisomes to prevent the chemical from causing damage to cellular components outside of the organelle. Hydrogen peroxide is safely broken down by peroxisomal enzymes into water and oxygen. Q: Peroxisomes carry out oxidation reactions that break down what acids? Choices: - nitric acids - stomach acids - acetic acids - fatty acids and amino acids A:

Ans:
fatty acids and amino acids