Vertebrate chordates have what part of the skeletal system?
Options:
- (A) spinal column
- (B) hard bones
- (C) aerobic capacity
- (D) cartilage bones
- (E) critical organs
- (F) joints
- (G) fur and fat
- (H) graptolites
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Let's think first: Vertebrate chordates have a backbone. Invertebrates are animals who lack a backbone or spinal column. Vertebrate chordates have a spinal column.... So the answer is [(A)]

What does not grow through cell division?
Options:
- (A) p53
- (B) AIDS
- (C) host
- (D) DDT
- (E) lung
- (F) HIV
- (G) corn
- (H) HPV
--
Let's think first: Populations of viruses do not grow through cell division because they are not cells. Where most viruses are DNA, HIV is an RNA virus. Populations of HIV do not grow through cell division because they are not cells.... So the answer is [(F)]

The loss in length of what causes cells to age?
Options:
- (A) fur and fat
- (B) layers of fat
- (C) cell membrane
- (D) sunlight
- (E) Chlorophyll
- (F) telomeres
- (G) programmed cell death
- (H) cancer
--
Let's think first: Aging occurs as cells lose their ability to divide. Portions of the telomeres are lost each time a cell divides. Aging occurs as cells lose their telomeres.... So the answer is [(F)]

What is the speed of the change in the characteristics of living things over time?
Options:
- (A) Jet speed.
- (B) Speed of light.
- (C) long
- (D) Slow.
- (E) Mach speeds.
- (F) slows
- (G) speed
- (H) years
--
Let's think first: Evolution is a change in the characteristics of living things over time. Biological evolution is slow, while corporate evolution is fast. The change in the characteristics of living things over time is slow.... So the answer is [(D)]

Which of these diseases cannot reproduce by itself?
Options:
- (A) fever
- (B) Leptospirosis
- (C) animals
- (D) influenza
- (E) bacteria
- (F) heat or cold
- (G) dangerous
- (H) anemia
--
Let's think first: Viruses cannot reproduce by themselves. Influenza is a disease caused by viruses. Influenza is a disease that cannot reproduce by itself.... So the answer is [(D)]

This process is always more complex in eukaryotes than prokaryotes
Options:
- (A) eukaryotic infection
- (B) mitosis
- (C) kinetic
- (D) movement
- (E) breathing
- (F) recycling
- (G) photosynthesis
- (H) relocation
--
Let's think first: Cell division is more complex in eukaryotes than prokaryotes. Mitosis is cell division. Eukaryotes have more complex mitosis than prokaryotes.... So the answer is [(B)]