Science Review

Which statement describes the ability of the children passing a recessive gene to their offspring?

• One child can pass the recessive gene to their offspring, and three children cannot.

• Two children can pass the recessive gene to their offspring, and two children cannot.

• Three children can pass the recessive gene to their offspring, and one child cannot.

• Four children can pass the recessive gene to their offspring, and zero children cannot.

Tags

NGSS.MS-LS4-4

A student reads in a science magazine that a mutation in a body cell causes it to divide rapidly, forming large masses of cells. These masses of cells cause other body cells to divide uncontrollably. The student claims that the mutation is beneficial to the organism. Is the student’s claim correct?

• Yes. The rate at which wounds and injuries heal will increase.

• Yes. The rate of growth of the organism will increase.

• No. The uncontrollable division of body cells can lead to diseases such as cancer.

• No. The uncontrollable division of body cells has no effect on the organism.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS3-1

Some plants have very broad leaves. How is this adaptation beneficial for those plants.

• supplies more area for the production of food

• stores the extra food produced by the plant

• keeps the plant safe from burrowing animals

• increases the surface area for absorbing water

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

In the fruit fly, the allele for black wings (B) is dominant over the allele for yellow wings (b). A cross between two black-wing flies produces a yellow-wing fly.

What are the correct genotype and phenotype of the offspring?

• Genotype: Bb

  Phenotype: Yellow Wings

• Genotype: Yellow Wings

  Phenotype: Bb

• Genotype: bb

  Phenotype: Yellow Wings

• Genotype: Yellow Wings

  Phenotype: bb

Tags

NGSS.MS-LS3-2

Which of the following is shown below?

• electromagnet

• electric motor

• transformer

• electric generator

How would you use the scientific method to determine the relationship between the mass of an object and its acceleration due to gravity?

• Calculate the force on different masses and measure the acceleration

• Drop objects of different masses from the same height and time their descent

• Increase the mass of an object while keeping the force constant

• Keep the mass constant and vary the force applied

Tags

DOK Level 3: Strategic Thinking

Design an experiment to test the effect of sunlight on the rate of photosynthesis in a plant. What would be your control variable?

• The type of plant used

• The amount of water given to the plant

• The amount of sunlight each plant receives

• The temperature of the environment

Tags

DOK Level 3: Strategic Thinking

In a rare plant, the trait for bent stems (B) is dominant over the trait for straigth stems (b). Which cross will result in maximum offspring with the bent stem trait?

• bb x bb

• BB x bb

• Bb x Bb

• bb x Bb

In strawberry plants, the trait for red fruit (R) is dominant over the trait for pink fruit (r). The table shows five possible crosses.

Which crosses represent possible parents of a strawberry plant that has the pink fruit phenotype?

• 2 and 5

• 3 and 4

• 1, 2, and 3

• 3, 4, and 5

Tags

NGSS.MS-LS4-4

In Tulips, the allele for purple flowers (P) is dominant over the allele for white flowers (p). What percentage of the offspring is expected to be purebred from the cross of Pp x Pp?

• 100%

• 75%

• 50%

• 25%