Overview
Here are the questions i just need the answers
1)
A cell uses ATP to
build proteins
repair DNA
produce enzymes
store energy
2)
A genome is
the information required to make an organism
the rules used to read a string of DNA
the nolecule that takes genetic information to other places in the cell
the chemistry of organic molecules
the chemistry of life
3)
Earth has a core-mantle-crust structure because of
the carbon cycle
convection
plate tectonics
differentiation
4)
Which of the following is not key evidence in support of the idea that all life today shares a common ancestor?
All life uses DNA to store genetic information.
Mapping of gene sequences shows how life is all related.
We have identified fossils of the first lifeforms that ever existed on Earth.
All life builds proteins from the same amino acids
5)
The earliest evidence for life on Earth dates to
about 65 million years ago.
about 3.8 billion years ago.
about 2 billion years ago.
about 570 million years ago.
about 4.5 billion years ago.
6)
The molecular building blocks of life have been found
only on Earth
only on terrestrial planet
only on planets in their star's habitable zones
in many places
7)
Why are fossils of early life on Earth more rare than fossils of plants and animals from the past few hundred million years?
Life was far less abundant prior to a few hundred million years ago.
We find fossils in sedimentary layers, and no sediments were deposited until just a few hundred million years ago.
Early organisms lacked skeletons and other hard structures that are most likely to be fossilized.
Fossils could not form before there was oxygen in the atmosphere.
8)
Tardigrades are exceptional in that they are complex animals that can
reproduce asexually
live in high-salinity environments
withstand radiation
travel between planets
9)
A fossil is found in a layer of rock above another layer dated at 2 million years. From this we can tell that the age of the fossil is
between 2 and 3 million years
older than 3 million years
older than 2 million years
younger than 2 million years
10)
The fact that life on Earth seems to have appeared quite rapidly suggests that life
is only possible on Earth-like planets
on any kind of planet is inevitable
can only appear soon after a planet forms
can arise on most habitalbe worlds
11)
Most of the universe is made up of
hydrogen and helium.
hydrogen and oxygen.
carbon and oxygen.
carbon and nitrogen.
12)
Carbon, Oxygen, and Nitrogen, the main chemical building-blocks of life were formed
in the center of the Earth and ejected onto the surface via volcanism
in the Big Bang
inside interstellar gas clouds during star formation
in the centers of stars and eject into space when they died
13)
Which of the following is considered by biologists to be a likely place where life first arose on Earth?
on meteorites that landed on Earth
in hot water near undersea volcanoes
deep underground
in places that got moderately heavy rainfall
14)
The possibility of extraterrestrial life was first considered
at the turn of the 20th century
during ancient times
after the invention of the telescope
during the past few decades
15)
Earth's current aatmosphere came primarily from
gas pulled in by the Earth gravitationally
volcanos on the Earth's surface
matter blasted from the Earth's surface in collisions
gas trapped by the Sun
16)
The only place outside of Earth where there is irrefutable evidence for (ancient, microbial) life is
Europa.
Titan.
None of the above–there is no irrefutable evidence for life beyond Earth.
the Moon.
Mars.
17)
Short Answer:
Answer one A question and one B question in several sentences to one paragraph each. 50 points per answer. Do not write more than one paragraph.
A-1) Which categories of objects exist in the solar system and how does the nebular theory explain how these objects were formed?
A-2) What are the geophysical conditions arising from the fact that Earth is still warm inside? How do these conditions contribute to our planet being suitable for life?
B-1) How does the fossil record show that Earth experienced a mass extinction 65 million years ago? Which types of evidence point to this event being caused by a giant impact?
B-2) What are the underlying beliefs of people with growth and
fixed mindsets? How do these types of people differ in regards to
exerting effort, facing challenges, reacting to mistakes, and receiving
feedback