Given = mas of object A is 52 kg
To find = weight of object A = ?
Solution
As we know that w = mg
put value we will get
w = 52 x 10
w = 520 kgm/s²
Chromatin
is composed of a DNA and a protein. The DNA is a double helix in the cell
nucleus packaged by histones, a special type of protein. Together they form the
chromatin with a basic structural unit called nucleosome. The chromatin's functions are:
a. to
package DNA into smaller volumes to fit in the cell.
b. to
allow mitosis by reinforcing the DNA macromolecule
c. to
prevent damaging of the DNA
<span>d.to
control gene expression and DNA replication</span>
Complete question:
Molecule 1 has the nitrogenous base sequence TCA AGT. Which set of bases in Molecule 2 can bond to that sequence in a complementary way?
a. UCAAGU
B. AGTACA
C. AGUUCA
D. UCAATA
Answer:
C. AGUUCA
Explanation:
DNA template strand and the corresponding RNA have complementary sequences. Adenine in the DNA template strand pairs with "uracil" base of RNA while cytosine pairs with its "guanine" base. Similarly, thymine base in DNA template strand pairs with "adenine" base in the RNA. This occurs since RNA does not have a thymine base. RNA has uracil base instead. Therefore, the molecule 1 with sequence TCA AGT would bind to the molecule 2 with the " AGU UCA" sequence.
Molecule 1: DNA template: TCA AGT
Molecule 2: mRNA: AGUUCA
True. The guard cells "open and close", forming stomata, which are the tiny openings on the leaf epidermis. When the guard cells are bery close against each other, the stoma is closed, preventing gases from being exchanged.
