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koban [17]
3 years ago
12

What did Schleidan contribute to the cell theory?

Biology
1 answer:
ale4655 [162]3 years ago
7 0
He found a nuclear structure (cells) in plants by looking through a microscope

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In guinea pigs coat color is determined by a single gene with two alleles. A guinea pig from a true-breeding black strain is mat
OLga [1]

Answer:

1/3 of black F2 progeny will be homozygous.

Explanation:

Here, BB = black coat color = true breeding dominant black strain

bb = white coat color =  true breeding recessive white strain

When true breeding black and white guinea pigs are mated to give F1 progeny:

BB X bb = Bb ( all black guinea pigs )

When two of the F1 guinea pigs are mated to give F2 progeny:

Bb X Bb = BB, Bb, Bb, bb

F2 progeny has 3/4 progeny as black (BB and Bb) . Out of them 1/3 are homozygous and 2/3 are heterozygous.

Hence, 1/3 of black F2 progeny will be homozygous.

7 0
3 years ago
What are two things you can do to help preserve Biodiversity?
atroni [7]
Providing food water and shelter to local animals/ birds , clean and protect the enviroment ! hope this helps 
7 0
3 years ago
Read 2 more answers
What is Ecosystem diversity?
natulia [17]

Answer:

Explanation:

Ecosystem diversity deals with the variations in ecosystems within a geographical location and its overall impact on human existence and the environment. Ecosystem diversity is a type of biodiversity. It is the variation in the ecosystems found in a region or the variation in ecosystems over the whole planet.

8 0
3 years ago
Read 2 more answers
The canal connecting the third and fourth ventricles and running through the midbrain is the interventricular foramen.
jeyben [28]

Answer:

The answer is false. The correct answer is cerebral aqueduct.

Explanation:

Because the foramen is the area that connects the third ventricle of the brain to the two lateral ventricles.

The canal connecting the third and fourth ventricles is called cerebral aqueduct.

4 0
2 years ago
Describe how the output of the Krebs cycle can be modified in additional processes of the carbon cycle.
Murljashka [212]

Answer:

Step 1. A carboxyl group is removed from pyruvate, releasing a molecule of carbon dioxide into the surrounding medium. (Note: carbon dioxide is one carbon attached to two oxygen atoms and is one of the major end products of cellular respiration. ) The result of this step is a two-carbon hydroxyethyl group bound to the enzyme pyruvate dehydrogenase; the lost carbon dioxide is the first of the six carbons from the original glucose molecule to be removed. This step proceeds twice for every molecule of glucose metabolized (remember: there are two pyruvate molecules produced at the end of glycolysis); thus, two of the six carbons will have been removed at the end of both of these steps.

Step 2. The hydroxyethyl group is oxidized to an acetyl group, and the electrons are picked up by NAD+, forming NADH (the reduced form of NAD+). The high- energy electrons from NADH will be used later by the cell to generate ATP for energy.

Step 3. The enzyme-bound acetyl group is transferred to CoA, producing a molecule of acetyl CoA. This molecule of acetyl CoA is then further converted to be used in the next pathway of metabolism, the citric acid cycle.

4 0
3 years ago
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