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Anarel [89]
3 years ago
8

Questions:

Biology
1 answer:
Neporo4naja [7]3 years ago
7 0

Explanation:

1. cell membranes are partialy permeable, only allowing passage to some certain molecules.

2. diffusion is the movement of molecules across partially permeable membrane down concentration gradient.

3. the molecules are too big to pass through partially permeable membrane. the concentration of the molecule might be higher in the cell than in the solution/surroundings.

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A plant can have either brown (B) or red (b) leaves. Brown is the dominant
Marizza181 [45]

Answer:

The plant would be red.

Explanation:

It would be red because red leaves are a recessive trait which has lowercase b's so if the genotype for the plant is bb, it would be red. If the plant had BB, it would be brown and if it had Bb it would be brown but, it would be a carrier of the red gene.

7 0
2 years ago
Question 5
jek_recluse [69]

Answer:

Not enough information

Explanation:

You haven't given any reference. However, they are referred to as the building blocks of life because, for example, in Prokaryotic cells, which are unicellular, everything required for them to survive and reproduce is all found within a single cell.

5 0
3 years ago
compare and contrast the different types of heterotrophs Use the terms Carnivore, herbivore, and omnivore in your discussion to
Lunna [17]

Answer:

I'm not sure if your asking about a A, B, C, D question but, as far as I can tell this is what I know

Explanation:

(:Comparing:) Heterotrophs occupy the second and third levels in a food chain, a sequence of organisms that provide energy and nutrients for other organisms. ... Herbivores—organisms that eat plants—occupy the second level. Carnivores (organisms that eat meat) and omnivores (organisms that eat plants and meat) occupy the third level.

(:Contrasting:) Examples include plants, algae, and some types of bacteria. Heterotrophs are known as consumers because they consume producers or other consumers. ... Herbivores—organisms that eat plants—occupy the second level. Carnivores (organisms that eat meat) and omnivores (organisms that eat plants and meat) occupy the third level.

Hope this helps.

5 0
3 years ago
If you made a Punnett square showing Gregor Mendel’s cross between true-breeding tall plants and true-breeding short plants, the
nekit [7.7K]

Answer:

C

Explanation:

Assume that allele A is the dominant allele that produces the dominant phenotype (tall) in plants that have at least one allele A, and allele a is the recessive allele that produces the recessive phenotype (short) in plants that have two alleles a.

In the parental generation, a true-breeding tall plant has the AA genotype (phenotype: tall), and a true-breeding short plant has the aa genotype (phenotype: short).

We have the Gregor Mendel's cross as in the image attached here.

All of the F1 generation (offspring plants) have the Aa heterozygous genotype, and therefore, they are all tall.

The answer is c (the offspring plants have a genotype that was different from that of both parents).

6 0
3 years ago
Define the following term: ECOSYSTEM
Karolina [17]
C)because many orginisms can live in the same area.However an ecosytem does not always eat the same the same food
8 0
3 years ago
Read 2 more answers
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