M1 Biology, The Study Of Life

Question 1

What is the advantage of sexual over asexual reproduction?

A. Sexual reproduction has no advantage
B. Sexual reproduction results into a genetically conserved gene pool
C. Sexual reproduction results into a genetically conserved lineage
D. Sexual reproductiom has the potential to create genetically diverse offspring

Answer 1

D. Sexual reproductiom has the potential to create genetically diverse offspring

Question 2

Which of the ff is arranged from thr simplest to the most complex level or biological organization?

A. Cell, tissue, organ, organism
B. Cell, organ, tissue, organism
C. Organism, organ, tissue, cell
D. Organism, tissue, organ, cell

Answer 2

A. Cell, tissue, organ, organism

Question 3

Movement or growth in response to an environmental stimulus

Answer 3

Tropism

Question 4

What is the most essential element of life?

Answer 4

Carbon

Question 5

The most abundant dietary source of energy

Answer 5

Carbohydrates

Question 6

Composed of a pentose sugar, a nitrogenous base and a phosphate group

Answer 6

Nucleotides

Question 7

Organic compounds that are essential for normal growth and functioning of organisms

Answer 7

Vitamins

Question 8

In average, a human body is made up of 60% water. A molecule of water if formed by two hydrogen atoms bonded to an oxygen atim. What do you call the chemical bond between the hydrogen and oxygen atoms?

A. Covalent bond
B. Ionic bond
C. Hydrogen bond
Van der Waals forces

Answer 8

A. Covalent bond.

Oxygen and Hydrogen are two non-metals, and the bond between them involves SHARING of electrons.

Question 9

Spongebob makes Krabby patties using coconut oil. He noticed that it is liquid when left on the table but solidifies when placed inside the freezer. What can be the best explanation for this?

A. Coconut oil has saturated fat
B. Coconut oil has unsaturated fat
C. The coconut oil is expired
D. The freezer is too cold

Answer 9

B. Coconut oil has unsaturated fat.

Question 10

Nucleotide is to ________ as ________ is to proteins.

A. Carbohydrates, monosaccharide
B. Nucleic acid, amino acid
C. DNA, RNA
D. Lipids, fatty acid

Answer 10

B. Nucleic acid, amino acid

Question 11

A team of archeologists discovered a fossil of an animal believed to be 2 million years old. Its genomic DNA was analyzed, and it has 15% Adenine. What is the fossil’s DNA base composition?

A. 15% A, 15% T, 15% C, 15% G
B. 15% A, 15% T, 35% C, 35% G
C. 15% A, 15% U, 35% C, 35% G
D. 15% A, 35% T, 15% C, 35% G

Answer 11

B. 15% A, 15% T, 35% C, 35% G

Question 12

Which of the following is false regarding DNA and RNA?

A. Both have sugar component.
B. Both are found in the nucleus.
C. Both are found in animals and plants.
D. Both have adenine, guanine, cytosine and uracil.

Answer 12

D. Both have adenine, guanine, cytosine and uracil.

DNA HAS THE FOLLOWING NITROGENOUS BASES:
Adenine, Guanine, Cytosine and Thymine. RNA, on the other hand, has A, G, C and U, instead of T.

Question 13

Water is used by warm blooded animals to dissipate heat in their bodies. What property of water makes it an effective regulator of body’s temperature?

A. Cohesion
B. Surface tension
C. High specific heat
D. High heat of evaporation

Answer 13

C. High specific heat

Water has high specific heat, which enables it to resist changes in temperature quite effectively.