Biology SB1c & SB3c

What is the purpose of interphase in the cell cycle?

• active cell growth and cytokinesis

• active growth and metabolism of the cell

• active division of the plasma membrane before mitosis

• None of These

What occurs during G1 and G2 in the cell cycle?

• synthesis of the cell

• Growth of DNA

• growth of the cell

• None of the these

Hydras are organisms that can reproduce sexually or asexually. A particular population of hydra are widely distributed in a large, stable environment. In this situation it is more advantageous for the hydra to reproduce–

• asexually, so that only a small number of offspring will be produced

• asexually, so individuals don’t have to spend energy looking for mates

• sexually, so the genetic variation of the population will increase.

• sexually, so offspring can move more easily into a new environment.

Tags

NGSS.MS-LS3-2

An organism is living in a rapidly changing environment. Sexual reproduction is advantageous to an organism in this situation because–

• sexual reproduction produces more offspring than asexual reproduction within a given time period.

• sexual reproduction produces offspring with more variation, some of which may be better adapted to a new environment.

• sexual reproduction requires more time to complete, allowing the environment to become more stable.

• offspring produced by sexual reproduction grows to maturity more rapidly

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

Scientists can determine whether a colony of sea anemones was produced sexually or asexually by ___________.

• counting the number of individual polyps

• Examining the diet of each polyp

• Examining the genetic diversity of each polyp

• Looking at environmental stability over time.

Tags

NGSS.HS-LS3-2

Which of the following is a characteristic of asexual reproduction?

• It involves male and female gametes.

• It produces genetically identical offspring.

• It produces small number of offspring.

• It is most common in humans

Tags

NGSS.MS-LS3-2

In meiosis, the original cell is __________ . This means it has __________ sets of chromosomes.

• diploid; 2

• diploid; 3

• haploid; 2

• haploid; 3

Tags

NGSS.HS-LS3-2

Which examples demonstrate the growth of an organism as a result of mitosis? Select all that apply

• a seed becoming a plant

• a plant withering in the sunlight

• skin flaking off your arm in the winter

• None of these

Tags

NGSS.HS-LS1-4

After duplication, at what point does a cell become two cells with identical DNA?

• starting in prophase

• end of anaphase

• end of cytokinesis

• at the end of interphase

Tags

NGSS.HS-LS1-4

SB1b. A diagram of meiosis is provided below. The diagram clearly represents meiosis because of which of the following items?

• The process happens in exactly three steps.

• The number of chromosomes remains constant throughout.

• The end result is cells with half the genetic material.

• There is a representation of genetic mutation.

Tags

NGSS.HS-LS3-2