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WorksheetsHeredity, Digestive System, Macromolecules
Total questions: 30
Worksheet time: 19mins
If heredity refers to the passing of traits, then genetics is the study of _________________.
DNA
Heredity
Classification
Punnett square
Which of the following statements is TRUE about Deoxyribonucleic acid?
It is made up of carbohydrates.
It is located in the cytoplasm of the cell.
It is found in both living and non-living things.
It is responsible for passing on traits from one generation to another.
Purebred traits also refer to ______________.
Homozygous
Heterozygous
Hybrid
Allele
Which of the following alleles refers to a heterozygous trait?
GG
Gg
gg
None of the above
Which of the following refers to a phenotype?
Punnett square
GG/Gg/gg
homozygous/heterozygous
brown eyes/blue eyes
Will it be possible to have a homozygous white fur offspring after crossing Ff and FF? (F- black, f- white)
Yes
No
Maybe
Cannot be determined
Single comb (r) is recessive over rose comb (R) for chicken. What is the percentage of having a rose comb in: Rr x Rr?
100%
25%
50%
75%
In which part does mechanical digestion start?
(a)
Main digestion and absorption happens in large intestine.
True
False
Bile is produced in (a) .
Which part of digestive system produces hydrochloric acid and gastric juice that help digest the food chemically?
mouth
esophagus
pancreas
stomach
The enzyme pepsin plays an important role in the digestion of ________ in the stomach.
carbohydrates
fats
proteins
nucleic acids
Salivary amylase is important because ______________________.
it breaks down the starch in the mouth.
It digests proteins in the stomach.
it emulsifies fats in small intestines.
it absorbs water and salt in the large intestine.
What do you call the food in the mouth that contains saliva?
(a)
Chyme is the involuntary muscle movement in the esophagus that pushes the food to the stomach.
True
False
The following are considered to be macromolecules EXCEPT
carbohydrates
proteins
lipids
vitamins
What do you call these tiny fingerlike projections found on the internal surface of small intestine?
(a)
Which of the following is digested by the enzyme lipase?
lipids
minerals
proteins
carbohydrates
Bread, rice and cereals can ______________.
help in growth and repair of muscles.
be used as stored energy.
give us an immediate source of energy.
promote good health by providing vitamins.
Which of the following does not belong to protein-rich foods:
cheese, milk, watermelon, chicken, fish, egg
(a)
A male with dimple (DD) married a woman that also has a dimple (Dd). What is the % of offspring with no dimple?
(a)
A male with dimple (DD) married a woman that also has a dimple (Dd). What is the % of having heterozygous offspring?
(a)
A hybrid male for blue eyes married a woman who is purebred brown eyes.
Considering that blue is dominant over brown.
What is the % of having an offspring w/ blue eyes?
(a)
A hybrid male for blue eyes married a woman who is purebred brown eyes.
Considering that blue is dominant over brown.
What is the % of having a purebred offspring?
(a)
If B is the gene for tall and b is for short, what is the genotype of tall offspring in the Punnett square below?
(a)
If B is the gene for tall and b is for short, what is the % of having tall offspring?
(a)
Which of the following is the enzyme present in saliva?
protease
amylase
carbohydrase
lipase
Carbohydrase is the enzyme responsible for breaking down carbohydrates in food such as breads and cereals.
True
False
If you eat too much fatty foods, the enzyme responsible for breaking down fat molecules is (a) .
The enzyme protease breaks down protein into _________.
simple sugar
glycerol
fatty acid
Amino acid
