Answer:
a. When a fetus is 13-15 weeks old
Explanation: is correct
Answer:
Plants absorb water from the soil by osmosis. Root hair cells are adapted for this by having a large surface area to speed up osmosis. The absorbed water is transported through the roots to the rest of the plant where it's used for different purposes: Photosynthesis
Explanation:
Answer:
24 million years
Explanation:
A: GCACTAAGCATCGATTT
B: GCACCAGGCACTGGTTC
There are 6 base pair changes between species A and species B. Since we know the rate of change is 1 base pair every 4 million years, we know 6x 4 million is likely how long ago the species diverged. 6x 4 million = 24 million years
Answer:
Iodine has more protons
Explanation:
Iodine has an atomic number of 53 whereas sulfur has an atomic number of 16. The atomic number is equivalent to the number of protons, hence iodine has the greater amount.
Explanation:
Stages:
1. Glycolysis:
- anaerobic
- occurs in the cytoplasm
- input- 2 ATP, glucose NAD
- output- 2 pyruvate NADH
2. TCA:
- aerobic
- occurs in the mitochondrial matrix
- input- oxygen, pyruvate (decarboxylated to acetyl coA), 1 ADP+ P, 8 NAD, 2 FAD
- output- 8 NADH and 2 FADH2, 2 ATP
3. ETC:
- aerobic
- occurs in the inner mitochondrial membrane
- input: 8 NADH and 2 FADH2, 34 ADP+ P
- output: 8 NAD and 2 FAD 34 ATP
Cellular respiration begins in the cytoplasm, where glucose is broken down for energy production. In the presence of an oxygen rich environment, eukaryotes may carry out aerobic respiration.
overall, in aerobic respiration: C6H12O6 (glucose) + 6 O2 → 6 CO2 + 6 H2O + ≈38 ATP
Further Explanation:
In all eukaryotic cells mitochondria are small cellular organelles bound by membranes, these make most of the chemical energy required for powering the biochemical reactions within the cell. This chemical energy is stored within the molecule ATP which is produced. Respiration in the mitochondria utilizes oxygen for the production of ATP in the Krebs’ or Citric acid cycle via the oxidization of pyruvate( through the process of glycolysis in the cytoplasm).
Oxidative phosphorylation describes a process in which the NADH and FADH2 made in previous steps of respiration process give up electrons in the electron transport chain these are converted it to their previous forms, NADH+ and FAD. Electrons continue to move down the chain the energy they release is used in pumping protons out of the matrix of the mitochondria.
This forms a gradient where there is a differential in the number of protons on either side of the membrane the protons flow or re-enter the matrix through the enzyme ATP synthase, which makes the energy storage molecules of ATP from the reduction of ADP. At the end of the electron transport, three molecules of oxygen accept electrons and protons to form molecules of water...
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