how does the acceleration of an object change if the force acting on it is doubled
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ati teas 7 science

1. How does the acceleration of an object change if the force acting on it is doubled?

Correct answer: B

Rationale: According to Newton's second law of motion, acceleration is directly proportional to the force acting on an object. When the force acting on an object is doubled, the acceleration of the object will also double. This relationship is described by the formula F = ma, where F is the force applied, m is the mass of the object, and a is the acceleration. Therefore, an increase in force will result in a proportional increase in acceleration. Choice A is incorrect because acceleration does not halve but doubles when force doubles. Choice C is incorrect as acceleration changes in direct proportion to force. Choice D is incorrect as acceleration does not quadruple but doubles when force doubles.

2. What is the term used to describe the inability of the kidneys to effectively filter waste products from the blood?

Correct answer: B

Rationale: Kidney failure is the term used to describe the inability of the kidneys to effectively filter waste products from the blood. Dehydration refers to insufficient fluid intake and not the kidney's filtering function. Incontinence is the loss of bladder control, not related to kidney filtration. Nephritis is the inflammation of the kidneys, not specifically related to the kidneys' inability to filter waste products.

3. Which of the following statements about fungi is FALSE?

Correct answer: B

Rationale: A) This statement is true. Fungi can exist in both unicellular (yeast) and multicellular (molds and mushrooms) forms. B) This statement is false. While some fungi can be parasitic and cause diseases in humans, not all fungi exhibit this behavior. Many fungi are beneficial and play essential roles in ecosystems. C) This statement is true. Fungi are crucial for decomposition and nutrient cycling in ecosystems. They break down organic matter and recycle nutrients back into the environment. D) This statement is true. Some fungi, like mushrooms, are used in food production and are consumed by humans.

4. Which of the following is a characteristic of a solution with high viscosity?

Correct answer: C

Rationale: The correct answer is C: 'It has a high resistance to flow.' A solution with high viscosity exhibits a high resistance to flow. Viscosity measures the fluid's resistance to deformation or flow, with higher viscosity indicating thicker and slower-flowing fluids. Choice A is incorrect because high viscosity means the solution flows slowly, not easily. Choice B is incorrect as high viscosity implies a high resistance to flow, not a low one. Choice D is irrelevant to viscosity and does not describe a characteristic associated with high viscosity.

5. What is the term for a genetic disorder caused by a mutation on the X chromosome?

Correct answer: C

Rationale: A genetic disorder caused by a mutation on the X chromosome is termed a sex-linked recessive disorder (Option C). This type of disorder is more commonly seen in males due to their single X chromosome, making them more vulnerable to X-linked mutations. Females have two X chromosomes, providing a protective effect against X-linked disorders.\n- Autosomal dominant disorders (Option A) result from a mutation in one copy of a gene on non-sex chromosomes (autosomes) and are not specifically related to the X chromosome.\n- Autosomal recessive disorders (Option B) occur due to mutations in both copies of a gene on autosomes, not on the X chromosome.\n- Sex-linked dominant disorders (Option D) are rare and lead to more severe symptoms in males as they only require one copy of the mutated gene on the X chromosome to express the disorder. However, this is not the term for a genetic disorder caused by an X chromosome mutation.

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