According to the fossil record, when did the dinosaurs become extinct?

A

at the start of the Mesozoic Era

B

at the start of the Paleozoic Era

C

at the end of the Mesozoic Era

D

at the end of the Paleozoic Era

The graph above shows the average trend in sea levels over the last century. One-third of the sea level rise can be contributed to the thermal expansion of the ocean water as a result of increasing ocean temperatures.

What is found in all adult echinoderms? an inability to move bilateral symmetry an ability to swim radial symmetry

If one strand of dna has the sequence c-t-a-g-c-g-t-t-a, what sequence would appear opposite it on the other strand?

List at least three functions of a cell membrane.

Why are test crosses used in selective breeding

Paleontologists can definitively conclude whether dinosaurs were endotherms. a. True b. False

What is thethe protein-assembly factories of the cell, are present in prokaryotic cells, animal cells, and plant cells.

Cells harvest the energy in organic compounds to make ATP through a process called

In the 1950s, when Watson and Crick were working on their model of DNA, which concepts were well accepted by the scientific community? Select all that apply. (a) - Genes are made of DNA. (b) - Chromosomes are made up of protein and nucleic acid.

Read the following statements that describe how information flows in the nervous system. What is the correct order in which they occur? 1) Response is carried to glands or muscles. 2) Information is gathered.