Ques: Q: Some reactions need extra help to occur quickly. they need another substance called what? Read this paragraph and choose the correct option from the provided answers: Some reactions need extra help to occur quickly. They need another substance called a catalyst. A catalyst is a substance that increases the rate of a chemical reaction. A catalyst isn't a reactant, so it isn't changed or used up in the reaction. Therefore, it can catalyze many other reactions. Choices: - neurotransmitter - protein - hormone - a catalyst A:
Ans: a catalyst

Ques: Q: What type of species can alternate between medusa and polyp forms? Read this paragraph and choose the correct option from the provided answers: As you can see in Figure below , both body plans have radial symmetry. Some cnidarian species alternate between medusa and polyp forms. Other species exist in just one form or the other. Choices: - mollusks - crocodilian - chordata - cnidarian A:
Ans: cnidarian

Ques: Q: What lets different species of anole lizards live in the same area without competing? Read this paragraph and choose the correct option from the provided answers: Specialization in Anole Lizards. Specialization lets different species of anole lizards live in the same area without competing. Choices: - concentration - cooperation - variation - specialization A:
Ans: specialization

Ques: Q: In dioecious animals, females generally produce what contribution to reproduction? Read this paragraph and choose the correct option from the provided answers: During sexual reproduction, two parents are involved. Most animals are dioecious , meaning there is a separate male and female sex, with the male producing sperm and the female producing eggs. When a sperm and egg meet during fertilization , a zygote , the first cell of a new organism, is formed ( Figure below ). This process combines the genetic material from both parents. The resulting organism will be genetically unique. The zygote will divide by mitosis and grow into the embryo. Choices: - milk - warmth - intelligence - eggs A:
Ans:
eggs