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maw [93]
3 years ago
14

All cells contain a.dna b.chloroplasts. c. nuclei. d. contractile vacuoles.

Biology
1 answer:
IrinaVladis [17]3 years ago
8 0
A. Not all cells have DNA.
B. Only plant cells have Chloroplasts.
C. Not all cells have Nuclei.
D. Not all cells contain Contractile Vacuoles.

None of these would be the correct answer.
Human bodies do not contain Chloroplast.
Your best bet would be A. DNA
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In a study of proteins mediating cell membrane transport, microbiologists measure current versus time through the cell membranes
MrRa [10]

Answer:

Q(0) = 0C, Q(1) = 264nC, Q(2) = 952C Q(3) = 2088nC, Q(4) = 3696C Q(5) = 5800nC

Explanation:

I = 4t³ + 200t² + 60t

But charge of an object =》 Q = IT

Charge of an object is the product of the current and the time in which the current passes through the membrane.

When t = 0

Q = 4(0)³ + 200(0)² + 60(0) = 0C

When t = 1

Q = 4(1)³ + 200(1)² + 60(1) = 264nC

When t = 2

Q = 4(2)³ + 200(2)² + 60(2) = 952nC

When t= 3

Q = 4(3)³ + 200(3)² + 60(3) = 2088nC

When t= 4

Q = 4(4)³ + 200(4)² + 60(4) = 3696nC

When t = 5

Q = 4(5)³ + 200(5)² + 60(5) = 5800nC

3 0
4 years ago
Read 2 more answers
PLZZ HELP!
andrew-mc [135]

Answer:

nucleus is the answer your welcome

7 0
3 years ago
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Define and describe the field of psychology, its subfield areas, uses, and the impact of culture on psychology.
vodomira [7]

Explanation:

phychology specializes in disorders of the mind. they have a doctor's degree. they also are educated in medication reactions of phycotherapy meds & what to prescribe for certain disorders of the mind. to specialize in this degree, it could take up to 12-15 yrs. total..

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4 years ago
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In flies, red eyes (R) are dominant to brown eyes (r). A heterozygous fly is crossed with a homozygous recessive fly
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Answer:

The cross of a heterozygous fly with a homozygous fly can be shown as follows:

         r            r

R      Rr           Rr

r        rr            rr

The results show that there is a 50% probability that the flies produced will have red eyes. Their genotypes will be heterozygous.

The results of the punnet square show that there will be a 50% probability that the offsprings will have brown eyes. Their genotype will be homozygous recessive.

A homozygous trait can be described as a trait which has same alleles for the gene which encodes the trait. Heterozygous means that both the alleles for the trait will be different.

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You coat a petri dish with fibronectin and proteoglycans and culture cells on the dish. the cells adhere to the dish. you repeat
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