What happens during G1 phase?

A. Chromosomes are duplicated.

B. DNA separates into two nuclei.

C. Cytoplasm is manufactured.

D. The cell splits in two.

What is the major cause for thermal pollution? electricity generation fertilizer use deforestation

Which structure of the kidney functions to reabsorb nutrients from the filtrate?

Select the correct answer. What causes magma in the lower mantle of Earth to rise up toward the crust? A. The moon's gravitational force acts on the magma. B. The core of Earth expands. C. The density of the magma decreases. D.

There is little sunlight at high altitudes during the winter, so few crops grow even if temperatures are regulated. To address the problem, special lamps can be used in greenhouses. These lamps allow plants to grow during the winter months.

Which one of the following bacteria does NOT belong with the others? A) Bacillus B) Escherichia C) Lactobacillus D) Staphylococcus E) Streptococcus

What is the purpose of soap (lysis agent) in the extraction of DNA?

In a controlled experiment, if a researcher wants to examine the effect of a high-calorie diet on an animal's weight, which of the two would be the independent variable?

TalUC 1. A sample of gold contains 3,800,000,000,000,000,000 atoms. Express this number in scientific notation.

Classify the inheritance pattern for many different phenotypes produced by one pair of alleles

Which of the following statements about carotenoids is NOT true? Carotenoids include red, orange, and yellow pigments. Carotenoids are sometimes referred to as accessory pigments. Beta carotene is the most abundant carotene in plants.