Learn more about our help with Assignments: Biology
Search & Filtering
what is co2
Starting with a diploid cell that contains 12 chromosomes, how many homologous pairs are present in this cell?
Biology
During paleontological study, scientist found 100 year old pollen grain trapped in the soil. Name the chemicals which made it survive for such a long period of time.
Biology
Sophia is testing an effect of different volumes of water on the growth of duckweed. She set up the experiment that is shown below.
Three beakers, all the same size, are set up with cool tap water and duckweed in them. The first beaker contains 100 mL of water and 20 fronds of duckweed. The second beaker contains 200 mL of water and 50 fronds of duckweed. The third beaker contains 300 mL of water and 40 fronds of duckweed.
at 20C a cell with a pressure potential of 3 bars is in equilibrium with the surrounding .4M solution of sucrose in an open beaker. what is the molar concentration of sucrose in the cell?
Given the following information about the inheritance of characteristics in pea plants, answer the questions below:
Y (yellow) is dominant to y (green)
R (round) is dominant to r (wrinkled)
B (bitter) is dominant to b (sweet)
S (smooth) is dominant to s (hairy)
L (long pod) shows incomplete dominance to 1 (short pod) (Ll is medium in length)
Given this cross: (P1) Yy Rr Bb SS Ll (male) x yy RR Bb Ss Ll (female)
a. How many different gametes can be formed by the female plant?
b. How many different genotypes are possible in the F1 offspring?
c. How many different phenotypes are possible in the F1 offspring?
d. What percent of the F1 individuals will be
green, bitter, and smooth _______________
hairy, medium, and sweet ______________
round, bitter, and long _________________
Y (yellow) is dominant to y (green)
R (round) is dominant to r (wrinkled)
B (bitter) is dominant to b (sweet)
S (smooth) is dominant to s (hairy)
L (long pod) shows incomplete dominance to 1 (short pod) (Ll is medium in length)
Given this cross: (P1) Yy Rr Bb SS Ll (male) x yy RR Bb Ss Ll (female)
a. How many different gametes can be formed by the female plant?
b. How many different genotypes are possible in the F1 offspring?
c. How many different phenotypes are possible in the F1 offspring?
d. What percent of the F1 individuals will be
green, bitter, and smooth _______________
hairy, medium, and sweet ______________
round, bitter, and long _________________
Biology
A pond contained 50 fish that have a mass of 800 grams each. What is the total mass of all the fish in the pond in kilograms?
You are provided with a culture tube of P. aeruginosa, E. coli, Salmonella typhimurium , Shigella flexneri. What biochemical test is more accurate to differentiate them?
1.1. Describe the characteristics of kingdom protista, plantae, fungi animals.
1.2.discuss the domains of life:bacteria and archaea.
1.3.define vascular and non-vascular plants.
1.4.describe the function of vascular tissues.
1.5.describe the life cycle of plants.
1.2.discuss the domains of life:bacteria and archaea.
1.3.define vascular and non-vascular plants.
1.4.describe the function of vascular tissues.
1.5.describe the life cycle of plants.
Why is electrophoresis done in solutions having low salt concentrations?
