HESI A2 BIOLOGY EXAM

PDF Download

HESI A2 BIOLOGY EXAM

QUESTIONS

Qs and Ans Expert- Explanation

This Exam contains:

-Guarantee passing score -80 Questions and Answers -format set of multiple-choice -Expert- Explanation

Question 1: What codes for proteins?

Answer:

DNA

Question 2: How many pairs of homologous chromosomes do humans have?

Answer:

23 pairs for a total of 46 Question 3: Ocean waves may tear sponges into pieces each of which may grow into a new sponge what is this form of reproduction called?

Answer:

Fragmentation

Question 4: What is DNA composed of?

Answer:

Deoxyribose, a simple sugar, nitrogen based, and a phosphate group

Question 5: Which organelle provides storage space for the cell?

Answer:

Vacuoles

Question 6: What can be altered?

Answer:

DNA

Question 7: What are the female parts of a plant?

Answer:

Pistil (female reproductive organ) Stigma (top part of pistil) Style (slender stalk below the stigma)

Question 8: What is the growth phase?

Answer:

G 1 Question 9: Which light color would be most effective for growing green plants indoor?

Answer:

Blue Question 10: If a disease is carried on the dominant allele, only the aa combination of recessive genes represents a disease free offspring.

Answer:

• out of 4 or 25% are predicted to be disease free

Question 11: In which phase of cell division do the chromosomes replicate?

Answer:

Interphase-active phase of a cells reproductive life, the cell produces nucleic acids and proteins and doubled its # of chromosomes

Question 12: What is the purpose of phloem tissue in plant stems?

Answer:

It conducts food throughout the plant, it is the system of narrow tubes that transports sugars and other nutrients

Question 13: What conducts water up through the stem of a plant?

Answer:

Xylem

Question 14: What contains uracil?

Answer:

RNA Question 15: What is necessary for active transport through a membrane to take place?

Answer:

ATP Question 16: What is the term for the breakdown of glycogen into glucose subunits?

Answer:

Hydrolysis, in hydrolysis any class of compound is broken down into subunits through the addition of water

Question 17: What are enzymes made from?

Answer:

Proteins Question 18: Which part of a plants reproductive system is of a different gender than others?

Answer:

Stamen (male reproductive organ)

Question 19: Infectious organisms that spread disease

Answer:

Pathogens

Question 20: How is mitosis different from meiosis?

Answer:

Meiosis creates sex cells with half the # of chromosomes of the parent cell where as mitosis creates cells that are exact copies of each other, down to the number of chromosomes

Question 21: What takes place in a lysosome?

Answer:

Food is digested, the lysosome contains digestive enzymes. The job of a lysosome is to digest food for cells and break down cells waste products Question 22: The scientific name for a house cat is Felis catus. This indicates the house cats what?

Answer:

Genus; species Kingdom/animalia Phylum/Chordata Class/mammalia Order/carnivora Family/felidae Genus/ Felis Species/catus

Question 23: Which organelle is responsible for protein synthesis?

Answer:

Ribosome

Question 24: Where is the ovary located in a flowering plant?

Answer:

Pistil Question 25: Organisms that make their own food through photosynthesis example blue-green algae

Answer:

Autotrophs

Question 26: Whose efficiency of energy is greater on the energy pyramid?

Answer:

Herbivore