Life Science

A trait that overpowers or hides another.

• trait

• dominant

• chromosomes

The physical appearance of an organism's is called its?

• genotype

• phenotype

• pedigree

Which of the following best explains why Megan's and Will's families were surprised to learn Cailin had inherited cystic fibrosis?

• Megan and Will are carriers of cystic fibrosis.

• Some of Will's distant ancestors had cystic fibrosis.

• Megan's father and Will's mother are carriers of cystic fibrosis.

• No one in either Megan's or Will's immediate family has cystic fibrosis except Cailin.

During which stage do the chromosomes line up across the middle of the cell?

• early pprophas

• metaphase

• telophas

• interphase

Which of the following is true based on the paragraph and diagram?

• After mitosis, one of the resulting daughter cells is larger than the other one.

• After mitosis, the two daughter cells have their own nuclei.

• The first stage of mitosis is the division of the cell in to two seperate cells.

• The first stage of mitosis involves the formation of cytoplasm.

• Organsisms with soft tissues may form fossils.

• Fossils ususally form in layers of sedimentary rocks.

• The fossil record for any given species may be incomplete.

• Fossils do not provide evidence for evolution.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

• energy production and movement

• movement and cell repair

• cell repair and respiration

• nutrient transport and immune defense

The carrying capacity of an ecosystem is the maximum number of organisms it can support. If the carrying capacity is exceeded, there will not be enough resources, and one or more specied will decline until a balance is reached. Which of the following is an example of people overloading the carrying capacity of an ecosystem?

• using a park for recreation

• grazing too many cattle on grass land

• adding a room to a suburban house

• banning a shellfishing in polluted waters

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-1

NGSS.MS-LS2-4

• DNA analysis provides more fundamental, accurate data than does a visual analysis of structures and fossils.

• Traditional classification was based on the erroneous assumption that organisms could be grouped by similarities.

• When organisms possess similar structures, it always means that they are closely related.

Tags

NGSS.MS-LS4-2

Which of the following is a characteristic of all living organisms?

• They can move independently.

• They can reproduce.

• They can photosynthesize.

• They can breathe oxygen.

Tags

NGSS.MS-LS1-4

NGSS.MS-LS4-4