All categories

3 years ago

WHAT IS PHOTOSYTHESIS?

Biology

2 answers:

uranmaximum [27]3 years ago

4 0

Answer:

Photosynthesis is a process by which phototrophs convert light energy into chemical energy, which is later used to fuel cellular activities. The chemical energy is stored in the form of sugars, which are created from water and carbon dioxide.

Explanation:

taurus [48]3 years ago

3 0

Answer:

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's metabolic activities

Explanation:

You might be interested in

In a hypothetical population of plants, flower color is determined by a single gene with two alleles. In a population of 500 pla

blondinia [14]

Answer:

In the F1 generation

RR = 0%

Rr = 50% (or 0.5)

rr = 50% (or 0.5)

Explanation:

A pink flowering plant has the genotype Rr. It is heterozygous for the allele. The alleles for this gene appears to show incomplete dominance, as the heterozygous phenotype is a blend of the two homozygous genotypes.

A white flowering plant has the genotype rr. It is homozyogous for the white allele

A punnet square of the cross is shown.

The resulting punnet square shows that only Rr and rr genotypes are possible, at a ratio of 50:50 (or 1:1). Therefore, the genotype frequency of Rr is 50%, and rr is 50% in the F1 generation. This can also be written as 0.5. It is not possible to get a red plant, as the genotype RR can not come from this cross

Download pdf

8 0

3 years ago

Compare the benefits and environmental impacts of pesticide use.

asambeis [7]

Answer:

<u>Benefits</u>:

pesticides can keep harmful pests–such as rats, mice, ticks and mosquitoes–away from crops while also protecting the plants from weeds and diseases that have the ability to greatly reduce crop yield.

<u>Environmental impacts</u>:

Pesticides may move with runoff as compounds dissolved in the water or attached to soil particles. Runoff from areas treated with pesticides can pollute streams, ponds, lakes, and wells. Pesticide residues in surface water can harm plants and animals and contaminate groundwater.

4 0

2 years ago

11.1 The Science of Ecology Lesson 11.1: True or False Name __________________ Class ______________ Date ________ Write true if

tangare [24]

Answer:

See explanation below

Explanation:

1. Biotic factors include sunlight, soil, temperature, and water. FALSE

Biotic factors include animals, plants, fungi, bacteria and protists.

2. Like nutrients and water, energy also recycles through an ecosystem. FALSE

3. An ecosystem consists of all the biotic and abiotic factors in an area and their interactions. TRUE

4. Herbivores are a necessary link between producers and other consumers. TRUE

5. A niche refers to the place an organism lives within its ecosystem. TRUE

6. Dung beetles eat animal feces. TRUE

7. Autotrophs make their own food. TRUE

8. Organisms use 90% of the available energy at each trophic level. FALSE

9. Carnivores include lions, polar bears, hawks, frogs, salmon, and deer. FALSE

Deer is a herbivore.

10. Biomass increases at the upper levels of a food chain. FALSE

11. Producers occupy the first trophic level. TRUE

12. Scavengers include vultures and raccoons. TRUE

13. In a complex ecosystem, it is likely that two different species will occupy the same niche. FALSE

14. The habitat is the role of a species in its ecosystem. FALSE

15. A food web shows how energy flows through an ecosystem. TRUE

4 0

2 years ago

Explain how a testcross can provide evidence for or against linkage.

MrRa [10]

Answer:

Testcrosses clarify linkage because each phenotypic class of progeny corresponds to each gamete type produced by the dihybrid parent.

Explanation:

A test cross involves the crossing of an individual with another phenotypically recessive individual so as to determine the zygosity of the former by analyses of the proportions of offspring phenotypes.
In order to determine linkage, the test cross shows that if the parentals are more than the recombinants, we can say that the two genes such as b and c are genetically linked and therefore, they must be on the same chromosome.
Also, the test-crosses help to find out which alleles came from which parent.
By setting up testcrosses in which one parent is homozygous for the recessive alleles of both genes,we can analyze the gene combinations received in the gametes from the other, doubly heterozygous parent.

7 0

3 years ago

What might depth of a footprint tell an interpreter

ivolga24 [154]

It could tell the weight of the individual that wore the footprint. It's especially useful in crime cases, because using the weight and shoe size, interpreters can accurately guess the height and gender of the individual.

6 0

3 years ago