Which of the following is true of a zygote?

A. lt forms into a blastocyst

C. It produces haploid male gametophytes

D. It is made up of only one cell

B. It is an unfertilized egg

Hydrogen fuel cell powered cars emit ... oxygen carbon dioxide hydrogen water

Draw a graph about important steps in making a protein

Homologous chromosomes are separated in what phases of meiosis

A red blood cell placed in a hypertonic medium will do what

Select the correct answer. Jane is obese and suffers from osteoarthritis. What is the likely cause? A. Jane has high levels of triglycerides and LDL, as well as low levels of HDL. B.

How are groundwater and runoff alike

What type of blood vessel usually carries oxygen rich blood

Give four reasons why organic material is good for the soil.

What is true about psychosocial changes observed in adolescents? select all that apply?

This causes substances to move across the cell membrane, against the concentration gradient. Select one: a. active transport b. neutral transport c. passive transport d. hydrophobic transport