WorksheetsBio 2017 Review
Total questions: 17
Worksheet time: 9mins
Name
Class
Date
1.
A single-celled organism can be classified as a prokaryote based on the absence of —
a)
A a cell membrane
b)
B ribosomes
c)
C Chromosomes
d)
D Nucleus
2.
a)
Silent Mutation
b)
Substitution
c)
Deletion
d)
Insertion
3.
A remora is a fish that has an adhesive disk on the back of its head that it uses to attach itself to a large shark. When food floats away from the shark’s mouth as it feeds, the remora collects the scraps. Drawings of a shark with a remora attached and a remora’s adhesive disk are shown below. The relationship between the remora and the shark is an example
a)
predation
b)
parasiticism
c)
commensualism
d)
competition
4.
Invasive plant species affect the interactions of living and nonliving components of an ecosystem, so the removal of invasive plants is often necessary. The goal of most plant-control methods is to disrupt or inhibit the function of different plant systems. For example, insects can be used to chew through roots in order to reduce a plant’s ability to absorb water.Which of these functions would be most immediately affected by a reduction in water uptake by roots?
a)
F Disease resistance
b)
G Seed dispersal
c)
H Sunlight absorption
d)
J Photosynthesis
5.
The vast grasslands of the Tibetan plateau are home to the plateau pika. The numerous pikas are prey for many predators of the grasslands, which serve as a major watershed for much of the area. The watershed drains large quantities of groundwater during the rainy season, or the monsoon season. Pikas have extensive burrows that help drain groundwater rapidly and are used as nesting sites by many bird species. However, many people advocate the eradication of the plateau pikas because they compete with livestock for grass.
a)
A Predators will have fewer prey ecosystem is more unstable
b)
is more stable
6.
Albinism is an autosomal recessive condition. Which circle graph shows the genotype probability when an albino female mates with a male that is heterozygous for the albinism trait?
a)
F
b)
G
c)
H
d)
J
7.
a)
Duplicates DNA
b)
Completes Cell division
c)
maintans Genetic Homeostasis
d)
Synthesized new molecules
8.
a)
enzymes activity increases with time
b)
Not me
c)
enzymes function best under certain temperatures
d)
Also not me
9.
The human immunodeficiency virus(HIV)often infects and destroys CD4 T cells. These CD4 T cells are one of many kinds of white blood cells that are an important part of the immune system.The most common danger related to the destruction of CD4 T cells is —
a)
A an increase in the risk of high blood pressure
b)
B an increase in the threat of diseases caused by microorganisms and viruses
c)
C a decrease in the flow of blood to vital organs
d)
Da decrease in the amount of oxygen being transported to tissues
10.
Common baboons live on the savanna in breeding groups called troops. While females tend to stay with the troop, younger or less dominant males may leave to join a neighboring troop. Which of these is a likely outcome of movement by young males?
a)
F Gene flow occurs between populations.
b)
G Allele frequencies suddenly change.
c)
H Relative genotypic frequencies reach a constant state.
d)
J Intermediate phenotypes increase in the species.
11.
An estuary collects sediments from the ocean and rivers that feed into it. The sediments swirl around and then settle to form a mudflat. Eel grass is then established on the mudflat. The ecosystem changes over time and ultimately develops into a salt marsh that contains mangrove trees.Which of the following is likely NOT involved in this example of ecological succession?
a)
A The rotting remains of plants add to the fertility of the soil.
b)
B The soil becomes so fertile that eel grass is replaced by other plant species.
c)
C The roots from plants help stabilize the sediment, keeping it in place.
d)
D The concentration of salt becomes so high that all plant life is destroyed.
12.
Differences in traits such as hair texture are determined by differences in —
a)
F the location of sugar groups in DNA
b)
G the sequence of nucleotides in DNA
c)
H the number of nitrogenous bases in DNA
d)
J the molecules attached to the phosphate in DNA
13.
a)
A
b)
B
c)
C
d)
D
14.
a)
Competition for food
b)
Gmass extinction during the jurassic era
c)
H
d)
J
15.
The picture shows bean-shaped glands called nodes. The clusters of cells in nodes include macrophages that break down viruses and other potentially harmful materials. Nodes also contain cells that produce protein particles capable of capturing harmful materials that flow in tissue fluid through the nodes. Different parts of the body are drained by nodes in different regions of the body. Which body systems are directly responsible for regulating these nodes and protecting the body from harmful materials in tissue fluid?
a)
Immune and lymphatic
b)
Digestive and nervous systems
c)
Endocrine and digestive systems
d)
Circulatory and nervous
16.
An increase in the amount of carbon dioxide in the atmosphere can cause atmospheric temperatures to increase. Which statement explains how this could affect the ocean as a carbon sink?
a)
GDissolved carbon dioxide gas in the ocean would increase because surface winds would cause a deeper circulation pattern, making more room for the gas.
b)
JLess carbon dioxide would be dissolved in the ocean because increasing atmospheric temperatures would cause ocean temperatures to increase.
c)
HLess carbon dioxide gas would be contained in the ocean because increasing precipitation would dilute the carbon entering the ocean.
17.
Which molecule synthesized by plants is a major source of energy for cellular processes in both plants and animals?
a)
AWax
b)
BNucleic acid
c)
CGlucose
d)
DChlorophyll
100 %
