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jarptica [38.1K]
3 years ago
15

Which pair of structures would provide a positive identification of an animal cell under a microscope?

Biology
1 answer:
harkovskaia [24]3 years ago
5 0

Answer:

The two structures that would positively identify an animal cell are; the vesicle and the central vacuole.

Explanation:

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A student's grade goes from a 95 to a 65 in 3 weeks. Calculate
steposvetlana [31]

-10grade/week

Explanation:

Given parameters:

Initial grade = 95grade

Final grade = 65grade

Time = 3weeks

Unknown parameter:

Rate of change of grade = ?

Solution:

Rate is defined as the change of a quantity with time.

 Rate of change of grade  = \frac{Final grade - Initial grade}{Time}

Rate of change of grade  = \frac{65 - 95}{3} = \frac{-30}{3}

Rate of change of grade = -10grade/week

The rate of change of the student's grade is -10grade/week. It implies that the grade of the student reduces by 10unit per week.

5 0
3 years ago
Andrew wants to conduct an experiment to learn if he can use high temperatures to
lesya [120]

Answer:

A

Explanation:

7 0
3 years ago
Read 2 more answers
Advances in technology have enabled scientists and researchers to better study the evolutionary relationships between species. M
padilas [110]

Answer:

Embryology: the study of similarities in embryos of organisms to find common connections

Developmental biology:  the study of life cycles of organisms to find common

Molecular biology: the analysis and comparison of DNA to better understand relationships between species

comparative anatomy: the study of the anatomy of an organism to explain evolutionary similarity

Explanation:

Embryology can be described as the branch of biology in  which studies about the sex cells, the process of fertilization and the development of the fetus or embryo are made. The similarities between the embryos show evolutionary history among different organisms.

Developmental biology can be described as the branch of biology in which studies are made about the processes of growth and developmental procedures about organisms. Organisms belonging to different groups can also show developmental similarities if they have a common ancestor.

Molecular biology is the branch of biology which is related to the study of life on molecular level. At this level, similarities between the genome of organisms can be checked for evolutionary histories.

Comparative anatomy: It is the branch of biology in which organisms are studies based on the similarities and differences in their structures.

5 0
3 years ago
When two or more simple machines are combined they form a(n) _____.
bekas [8.4K]
It is not c or d. I think it is a. 
5 0
3 years ago
These are all hypothalamic hormones except
Paul [167]

Answer:

The correct answer is luteinizing hormone.

Explanation:

Hypothalamus has two sets of nerve cells that produce hormones. One set sends the hormones that are anti-diuretic hormone and oxytocin. ADH regulates or water in the bloodstream by reabsorption of water at the kidney and oxytocin helps in pregnancy and breastfeeding.

The other set produces hormones growth regulating, stress releasing and stimulating and inhibiting hormones are dopamine, corticotrophin-releasing hormone, growth hormone-releasing hormone, gonadotropin-releasing hormone, somatostatin, and thyrotropin-releasing hormone.

Luteinizing hormone is secreted by the pituitary gland. It is one of the main hormones that control the reproductive system.

Thus, the correct answer is luteinizing hormone.

4 0
3 years ago
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