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Setler [38]
2 years ago
11

Which type of rock is loosely held together? 1. Graphite 2.Igneous 3.Metamorphic 4.Sedimentary

Biology
1 answer:
masya89 [10]2 years ago
3 0

Answer:

Serpentine minerals are made of tiny sheets of silica tetrahedrons that are loosely held together.

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3 years ago
1. Walking through the forest, you find a large population of toadstools. From your extensive knowledge of the kingdom fungi, yo
Lena [83]

Answer:

No, observed and expected frequencies are different.

Observed frequencies: p2 = 0.56 , 2pq = 0.375, q2 = 0.062

Expected frequencies: p2 = 0.774 , 2pq = 0.211, q2 = 0.014

Explanation:

Given frequency of recessive genotype (q2)= 14/ 1006 = 0.0139

Frequency of recessive allele s (q) = square root of 0.0139 = 0.12

Frequency of dominant allele S (p) = 1-q = 1-0.12 = 0.88

Expected frequency of homozygous recessive genotype = 0.12 x 0.12 = 0.014

Expected frequency of homozygous dominant genotype = 0.88 x 0.88 = 0.774

Expected frequency of heterozygous dominant genotype = 2pq = 2 x 0.88 x 0.12 = 0.211

Observed frequencies in population 2

Observed frequency of homozygous dominant genotype = 308 / 549 =0.56

Observed frequency of heterozygous dominant genotype = 206 / 549 =0.375

Observed frequency of homozygous recessive genotype = 34 / 549 =0.062

Observed frequencies do not match with expected frequencies.

6 0
3 years ago
What type of disorder is sickle cell anemia?<br> A.recessive<br> B.lung<br> C.dominant
ExtremeBDS [4]

it is found on the reccesive allele of the hemoglobin gene so c

5 0
3 years ago
The intracellular calcium ion concentration of ventricular muscle cells averages 10-4 mmol/L during diastole. The calcium ion co
Wewaii [24]

Answer: The correct answer is option D

SECONDARY ACTIVE COUNTER-TRANSPORT

Explanation: Secondary active transport is a type of transport that involves molecules across the cell membrane utilizing or making use of energy in other forms than Adenosine Triphosphate (ATP).

The energy that is being made use of comes from the electrochemical gradient created by pumping ions out of the cell. This can be either via antiport or symport.

Antiport or Counter-transport means that 2 different molecules or ions are being transported at the same time but opposite directions. One of the species is allowed to flow from high concentration to a lower concentration (often Sodium) while the other species is transported simultaneously to the other side.

Example is Na+-H+ counter-transport, the example and advantage of this transporter is clearly seen in the proximal tubules of the kidneys. The mechanism for concentrating H+ is not nearly as powerful as Primary active transport, however it can transport extremely large numbers and thus making it a key in H+ homeostasis in the body.

4 0
2 years ago
Read 2 more answers
I need help please.. i'm stuck
Anna11 [10]
Ya its B i think :):):)):
3 0
2 years ago
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