Asked by melanie martinez <3333

Which organelle may often be referred to as the "gate keeper" because it controls what goes in and out of the cell?
A.
the cytoplasm

B.
the nucleus

C.
the cell membrane

D.
the mitochondrion
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Plants gather the suns energy with light-absorbing molecules. What are these molecules called?
A.
pigments

B.
thylakoids

C.
chloroplasts

D.
glucose
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Which organelle is responsible for taking in nutrients, breaking them down, and creating energy rich molecules?
A.
the mitochondrion

B.
the Golgi apparatus

C.
the nucleus

D.
the vacuole
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Multiple Choice Question
Why do all plant cells contain chloroplasts?
A.
Chloroplasts are necessary for cellular respiration.

B.
Chloroplasts are necessary for photosynthesis.

C.
Chloroplasts are necessary for reproduction.

D.
Chloroplasts are necessary for growth.
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Mercedes created a table to show the functions of different cell structures.

Cell Structure Function
nucleus controls the activities of the cell
cell membrane allows materials in and out of the cell
mitochondria use energy from the Sun to make sugars
cytoplasm acts as a pump to control the movement of nutrients
chloroplast provides the cell with most of its energy

What error did Mercedes make when creating her table?
A.
Mercedes switched the functions of the cytoplasm and the cell membrane.

B.
Mercedes switched the functions of the mitochondria and the chloroplast.

C.
Mercedes switched the functions of the nucleus and the cell membrane.

D.
Mercedes switched the functions of the chloroplast and the nucleus.
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What is genetic engineering?
A.
the manipulation of genetic instructions to produce new characteristics

B.
the creation of a new species that has desirable traits

C.
a process used by natural selection to thin out a population

D.
the breeding between the fittest members to produce multiple offspring
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C. the cell membrane
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A. pigments
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A. the mitochondrion
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B. Chloroplasts are necessary for photosynthesis.
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B. Mercedes switched the functions of the mitochondria and the chloroplast.
Answered by GPT 3.5
A. the manipulation of genetic instructions to produce new characteristics