For each items choose the letter of the best answer. No need to write the explanations. 26. How does polyploidy occur in plants? A. A diploid pollen united with a haploid cell B. A haploid pollen unites with a diploid seed C. A diploid sperm unites with a haploid egg D. A haploid sperm unites with a diploid egg
For each items choose the letter of the best answer. No need to write the explanations. 26. How does polyploidy occur in plants? A. A diploid pollen united with a haploid cell B. A haploid pollen unites with a diploid seed C. A diploid sperm unites with a haploid egg D. A haploid sperm unites with a diploid egg
Concepts of Biology
1st Edition
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:Samantha Fowler, Rebecca Roush, James Wise
Chapter14: Diversity Of Plants
Section: Chapter Questions
Problem 1ACQ: Figure 14.19 At what stage does the diploid zygote form? a. When the female cone begins to bud from...
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For each items choose the letter of the best answer. No need to write the explanations.
26. How does polyploidy occur in plants?
A. A diploid pollen united with a haploid cell
B. A haploid pollen unites with a diploid seed
C. A diploid sperm unites with a haploid egg
D. A haploid sperm unites with a diploid egg
32. Which of the following key terms is incorrectly matched with its membrane protein?
A. Channel - tunnel
B. Enzymatic- metabolism
C. Junction - communication
D. Receptor - cross
36. Which cell membrane component is composed of fatty acids with no charge and is, therefore, nonpolar?
A. Glycerol
B. Head
C. Phosphate group
D. Tail
38. What do unsaturated fatty acids have that saturat fatty do not have in a phospholipid which allow more room for substances to go through?
A. Non-polarity
B. Affinity to water
C. Bending at 30°
D. Double bonds
39. Which of the following specific criteria for a molecule is LEAST considered when it crosses the membrane?
A. Charge
B. Appearance
C. Size
D. Solubility
50. When a cell is placed in a hypotonic solution, what will happen?
A. The cell wall breaks
B. The vacuole expands
C. The cytoplasm shrinks
D. The cell membrane shrinks
54. Why are fruits and vegetables preserved through salt and sugar?
A. Cooking them in solutes kills the bacteria
B. Water goes out of the plant cell using plasmolysis
C. Water goes out of the cell and is replaced by solutes sealing the membrane
D. Microorganisms have a hard time penetrating the membrane due to plasmolysis
55. Which type of membrane protein for facilitated diffusion is responsible for conforming to substances to be transported like glucose and amino acids?
A. Carrier protein
B. Channel protein
C. Transport protein
D. Receptor protein
57. What can a receptor-mediated endocytosis and phagocytosis transport for the cell, respectively?
A. Molecules, macromolecules
B. Specific molecules, macromolecules
C. Specific substances, molecules
E. Target molecules, molecules
58. Which type of transport membrane protein allow hydrogen ions to go through from the intracellular space towards the extracellular slace?
A. Antiporter
B. Bulk porter
C. Symporter
D. Uniporter
59. What can sodium-potassium pump do create the cell's electrochemical gradient?
A. More cations are taken out than anions are taken in creating an imbalance in charges.
B. More anions are taken out than cations are taken in creating an imbalance in charges.
C. More cations are taken out than taken in creating a negative intracellular space.
D. More anions are taken out than taken in creating a positive intracellular apace.
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