Which trio supports endosymbiosis?
- Green color and fast swimming
- Own DNA, two membranes, solo division
- Spores and hyphae
Where did mitochondria come from?
- A swallowed cell kept for energy
- A folded cell wall
- A captured virus
Protists form one single branch of life.
Circle one: True False
Which pair contrasts two protist lifestyles?
- Hunting food versus trapping sunlight
- Flying versus burrowing
- Seeding versus flowering
Why did mitochondria join before chloroplasts?
- Plastids carry no DNA
- Mitochondria photosynthesise better
- All eukaryotes keep mitochondria or traces, few keep plastids
Why can protists not sit on one branch?
- They share one recent parent cell
- Members branch from many points of the tree
- They hold no DNA
A student says chloroplasts joined first since plants look older. What is the error?
- Mitochondria are universal while plastids are patchy
- Plants predate bacteria
- Chloroplasts lack membranes
Why are protists evidence FOR endosymbiosis, not an afterthought?
- They predate every other cell
- They disprove organelle DNA
- They show captured partners working in varied ways
The eukaryotes outside the big three W1-mt_CHb8H727nW-s1
- Own DNA, two membranes, solo division · Both organelles still look and act like free bacteria.
- A swallowed cell kept for energy · A host kept its swallowed guest as a powerhouse.
- False · Protist marks a level of organisation across many branches.
- Hunting food versus trapping sunlight · Some engulf food while others photosynthesise, and some switch.
- All eukaryotes keep mitochondria or traces, few keep plastids · The universal partner must be the older joining.
- Members branch from many points of the tree · One branch cannot span members rooted in many places.
- Mitochondria are universal while plastids are patchy · Looks mislead: distribution across lines dates the joinings.
- They show captured partners working in varied ways · Living cells display the swallowed history still at work.