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2024 STRAIGHTERLINE BIO 101 EXAM WITH CORRECT ANSWERS

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2024 STRAIGHTERLINE BIO 101 EXAM WITH CORRECT ANSWERS

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  • August 6, 2024
  • 10
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • STRAIGHTERLINE BIO 101
  • STRAIGHTERLINE BIO 101
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Elitaa
2024 STRAIGHTERLINE BIO 101
EXAM WITH CORRECT
ANSWERS

Active transport requires - CORRECT ANSWERS-A carrier protein to pump a
substance against its concentration gradient

What steps are in the cell cycle? - CORRECT ANSWERS-Interphase, mitotic
phase, cytokinesis

What is the S-phase of the cell cycle? - CORRECT ANSWERS-S-phase, growth
and DNA replication

What is the G1 phase of the cell cycle? - CORRECT ANSWERS-Cell growth

What is the G2 phase? - CORRECT ANSWERS-Final preparation for mitosis,
produces all proteins needed for mitosis

What is the mitotic phase? - CORRECT ANSWERS-period of cell division

How many chromosomes do humans have? - CORRECT ANSWERS-46 (23
pairs) except in sex cells

What happens in prophase? - CORRECT ANSWERS--nuclear membrane
breaks down
-DNA condenses into chromosomes

What happens in metaphase? - CORRECT ANSWERS--Chromosomes line up in
the middle of the cell
-spindle fibers form and attach to centromeres

What happens in anaphase? - CORRECT ANSWERS--centromeres divide
-chromatids become one chromosome
-chromosomes migrate to opposite sides of cell

What happens in telophase? - CORRECT ANSWERS--cytokinesis occurs
-nuclear membrane forms in daughter cells

, Why is cytokinesis different in plant cells? - CORRECT ANSWERS-Because
plant cells have cell walls instead of cell membranes. Instead it forms a new
cell wall.

What do chromosomes in prokaryotic cells look like? - CORRECT ANSWERS-
Single ring shaped chromosome

What is a somatic cell? - CORRECT ANSWERS-body cell

The enzyme that brings in DNA nucleotides is called - CORRECT ANSWERS-
DNA polymerase

Haploid - CORRECT ANSWERS-Having one half of the chromosome
characteristics of a species

In meiosis, crossing over occurs in - CORRECT ANSWERS-Prophase 1

In meiosis, centromeres divide in - CORRECT ANSWERS-Anaphase II

At the end of meiosis II, how many cells are made - CORRECT ANSWERS-4

The phase between meiosis I and II is called - CORRECT ANSWERS-
Interkinesis

What is a test cross? - CORRECT ANSWERS-cross between an organism with
an unknown genotype and an organism with a recessive phenotype

What are autosomes? - CORRECT ANSWERS-All chromosomes of a genotype
except sex chromosomes

What are the bases in RNA - CORRECT ANSWERS-Adenine, Uracil, Guanine,
Cytosine

What is the sugar found in RNA? - CORRECT ANSWERS-Ribose

What are the 3 types of RNA - CORRECT ANSWERS-mRNA, tRNA, rRNA

What is point mutation? - CORRECT ANSWERS-Change in a single
nitrogenous base (sickle cell)

What is frame shift mutation? - CORRECT ANSWERS-Dramatic mutation from
addition or deletion of a base. (Cystic fibrosis)

How does cancer develop? - CORRECT ANSWERS-Proto-oncogenes mutate to
oncogenes followed by loss of tumor suppression gene function

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