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damaskus [11]
3 years ago
6

A student sets up a controlled experiment to test the effect of a fertilizer on plant growth. They use 2 tomato plants, one is g

iven 1 cup of water every day, 1 cup of fertilizer every week and daily sun and constant temperature. The second plant is given ½ cup of water every day, no fertilizer and sun every other day and constant temperature. Using your knowledge of the Scientific method why is this not a good experimental design? 1.The second plant should also be given some fertilizer.
2.The second plant had different controls and so it cannot be compared for just the effect of fertilizer 3.The second plant should have a change in temperature 4. The second plant should not have that much water every day.

Diabetics can now obtain insulin that has been manufactured by what biological advancement?
1.HGP
2.hybridization
3.gene splicing
4.cloning
The Krebs cycle and electron transport take place in which part of the cell?
1.cytoplasm
2.mitochondria
3.nucleus
4.vacuoles
Biology
1 answer:
densk [106]3 years ago
5 0
The first one is 2, The answer to question 2 would be: <span>gene splicing or cloning

First, the gene that makes insulin is cut from human cells. After having the insulin gene, the scientist will put it inside bacteria so the bacteria will produce human insulin. </span>This was called gene splicing. 
Then the bacteria have insulin genes, the bacteria will be cloned to make multiple colonies of same bacteria. This phase called cloning. 
and the last one 2, mitochondria.
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Which is the best evidence to prove that irene was heterozygous for hemophilia
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A. Alice carried the recessive allele


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3 years ago
What do these four types of molecules have in common? A carbohydrates B proteins C lipids D nucleic acids
Luden [163]

Answer:

biological macro-molecules

Explanation:

4 0
3 years ago
If a cell loses control of gene expression, what happens?
kipiarov [429]

Answer:

Abnormal, unhealthy cells develop

Explanation:

Gene expression is the process through which genes are turned on through transcription, and to some extent through the translation of the mRNA.

Gene expression is highly regulated to ensure the cell can create the correct combination of proteins to carry out it's tasks. If gene expression is out of control, the mRNAs that are transcribed in the cell are not properly regulated, and therefore the proteins in the cell are not regulated. Since proteins carry out essentially every function in the cell, the cell becomes unhealthy, and incorrectly uses its resources.

Accurate control of gene expression also ensures that the cell can perform specialized functions, it is what makes a heart cell distinct from a brain cell, for example. Therefore, if it is out of control, cells will not be specialized correctly.

3 0
3 years ago
A population is made up of individuals where 77 have the A1A1 genotype, 65 have the A1A2 genotype, and 123 have the A2A2 genotyp
lana [24]

Answer:

Frequency of allele A1- 0.41

Explanation:

In Hardy weinberg equilibrium,

P refers to the dominant allele

q refers to the recessive allele

The allele frequency will be p+q=1

The genotypic frequency is- P²+q²+2pq=1

P²= genotype of dominant trait ( A1A1)- 77

2pq= genotype of heterozygotes (2pq)- 65

q²= genotype of recessive trait (A2A2)-  123

Total number of offsprings= 77+  65+ 123

                                            = 265

Now to calculate allele frequency of A1=

\dfrac{\text{number of A1A1 offspring}}{ \text{total number of offspring}}+\dfrac{1}{2}(\dfrac{\text{number of A1A2 offspring}}{\text{total number of offspring}})

= 77/265 + 1/2( 65//265)

=  0.290+ 0.122

= 0.413

Thus, 0.41 is correct.

3 0
3 years ago
What are test tube babies?
garik1379 [7]
Test tube babies are a babies conceived by in vitro fertilization.
in virto fertilization is a process by which an egg is fertilised by sperm outside the body.
hope this helps :)
3 0
3 years ago
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